OpenDroneMap-docs/source/locale/pot/tutorials.pot

# SOME DESCRIPTIVE TITLE.
# Copyright (C) 2020, OpenDroneMap
# This file is distributed under the same license as the OpenDroneMap package.
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"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
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#: ../../tutorials.rst:5
msgid "Tutorials"
msgstr ""

#: ../../tutorials.rst:7
msgid "Below you will find instructions for some common use cases."
msgstr ""

#: ../../tutorials.rst:11
msgid "Creating High Quality Orthophotos"
msgstr ""

#: ../../tutorials.rst:None
msgid "image of OpenDroneMap orthophoto"
msgstr ""

#: ../../tutorials.rst:17
msgid "Without any parameter tweaks, ODM chooses a good compromise between quality, speed and memory usage. If you want to get higher quality results, you need to tweak some parameters:"
msgstr ""

#: ../../tutorials.rst:19
msgid "``--orthophoto-resolution`` is the resolution of the orthophoto in cm/pixel. Decrease this value for a higher resolution result."
msgstr ""

#: ../../tutorials.rst:20
msgid "``--ignore-gsd`` is a flag that instructs ODM to skip certain memory and speed optimizations that directly affect the orthophoto. Using this flag will increase runtime and memory usage, but may produce sharper results."
msgstr ""

#: ../../tutorials.rst:21
msgid "``--texturing-nadir-weight`` should be increased to ``29-32`` in urban areas to reconstruct better edges of roofs. It should be decreased to ``0-6`` in grassy / flat areas."
msgstr ""

#: ../../tutorials.rst:22
msgid "``--texturing-data-term`` should be set to `area` in forest areas."
msgstr ""

#: ../../tutorials.rst:23
msgid "``--mesh-size`` should be increased to ``300000-600000`` and ``--mesh-octree-depth`` should be increased to ``10-11`` in urban areas to recreate better buildings / roofs."
msgstr ""

#: ../../tutorials.rst:27
msgid "Calibrating the Camera"
msgstr ""

#: ../../tutorials.rst:29
msgid "Camera calibration is a special challenge with commodity cameras. Temperature changes, vibrations, focus, and other factors can affect the derived parameters with substantial effects on resulting data. Automatic or self calibration is possible and desirable with drone flights, but depending on the flight pattern, automatic calibration may not remove all distortion from the resulting products. James and Robson (2014) in their paper `Mitigating systematic error in topographic models derived from UAV and ground‐based image networks <https://onlinelibrary.wiley.com/doi/full/10.1002/esp.3609>`_ address how to minimize the distortion from self-calibration."
msgstr ""

#: ../../tutorials.rst:None
#: ../../tutorials.rst:None
msgid "image of lens distortion effect on bowling of data"
msgstr ""

#: ../../tutorials.rst:35
msgid "*Bowling effect on point cloud over 13,000+ image dataset collected by World Bank Tanzania over the flood prone Msimbasi Basin, Dar es Salaam, Tanzania.*"
msgstr ""

#: ../../tutorials.rst:37
msgid "To mitigate this effect, there are a few options but the simplest are as follows: fly two patterns separated by 20°, and rather than having a nadir (straight down pointing) camera, use one that tilts forward by 5°."
msgstr ""

#: ../../tutorials.rst:None
msgid "animation showing optimum"
msgstr ""

#: ../../tutorials.rst:45
msgid "As this approach to flying can be take longer than typical flights, a pilot or team can fly a small area using the above approach. OpenDroneMap will generate a calibration file called cameras.json that then can be imported to be used to calibrate another flight that is more efficiently flown."
msgstr ""

#: ../../tutorials.rst:47
msgid "Alternatively, the following experimental method can be applied: fly with much lower overlap, but two *crossgrid* flights (sometimes called crosshatch) separated by 20° with a 5° forward facing camera."
msgstr ""

#: ../../tutorials.rst:49
msgid "Crossgrid overlap percentages can be lower than parallel flights. To get good 3D results, you will require 68% overlap and sidelap for an equivalent 83% overlap and sidelap."
msgstr ""

#: ../../tutorials.rst:50
msgid "To get good 2D and 2.5D (digital elevation model) results, you will require 42% overlap and sidelap for an equivalent 70% overlap and sidelap."
msgstr ""

#: ../../tutorials.rst:None
msgid "animation showing experimental optimum"
msgstr ""

#: ../../tutorials.rst:56
msgid "Vertically separated flight lines also improve accuracy, but less so than a camera that is forward facing by 5°."
msgstr ""

#: ../../tutorials.rst:None
msgid "figure showing effect of vertically separated flight lines and forward facing cameras on improving self calibration"
msgstr ""

#: ../../tutorials.rst:62
msgid "From James and Robson (2014), `CC BY 4.0 <https://creativecommons.org/licenses/by/4.0>`_"
msgstr ""

#: ../../tutorials.rst:66
msgid "Creating Digital Elevation Models"
msgstr ""

#: ../../tutorials.rst:68
msgid "By default ODM does not create DEMs. To create a digital terrain model, make sure to pass the ``--dtm`` flag. To create a digital surface model, be sure to pass the ``--dsm`` flag."
msgstr ""

#: ../../tutorials.rst:None
msgid "image of OpenDroneMap derived digital surface model"
msgstr ""

#: ../../tutorials.rst:74
msgid "For DTM generation, a Simple Morphological Filter (smrf) is used to classify points in ground vs. non-ground and only the ground points are used. The ``smrf`` filter can be controlled via several parameters:"
msgstr ""

#: ../../tutorials.rst:76
msgid "``--smrf-scalar`` scaling value. Increase this parameter for terrains with lots of height variation."
msgstr ""

#: ../../tutorials.rst:77
msgid "``--smrf-slope`` slope parameter, which is a measure of \"slope tolerance\". Increase this parameter for terrains with lots of height variation. Should be set to something higher than 0.1 and not higher than 1.2."
msgstr ""

#: ../../tutorials.rst:78
msgid "``--smrf-threshold`` elevation threshold. Set this parameter to the minimum height (in meters) that you expect non-ground objects to be."
msgstr ""

#: ../../tutorials.rst:79
msgid "``--smrf-window`` window radius parameter (in meters) that corresponds to the size of the largest feature (building, trees, etc.) to be removed. Should be set to a value higher than 10."
msgstr ""

#: ../../tutorials.rst:81
msgid "Changing these options can affect the result of DTMs significantly. The best source to read to understand how the parameters affect the output is to read the original paper `An improved simple morphological filter for the terrain classification of airborne LIDAR data <https://www.researchgate.net/publication/258333806_An_Improved_Simple_Morphological_Filter_for_the_Terrain_Classification_of_Airborne_LIDAR_Data>`_ (PDF freely available)."
msgstr ""

#: ../../tutorials.rst:83
msgid "Overall the ``--smrf-threshold`` option has the biggest impact on results."
msgstr ""

#: ../../tutorials.rst:85
msgid "SMRF is good at avoiding Type I errors (small number of ground points mistakenly classified as non-ground) but only \"acceptable\" at avoiding Type II errors (large number non-ground points mistakenly classified as ground). This needs to be taken in consideration when generating DTMs that are meant to be used visually, since objects mistaken for ground look like artifacts in the final DTM."
msgstr ""

#: ../../tutorials.rst:91
msgid "Two other important parameters affect DEM generation:"
msgstr ""

#: ../../tutorials.rst:93
msgid "``--dem-resolution`` which sets the output resolution of the DEM raster (cm/pixel)"
msgstr ""

#: ../../tutorials.rst:94
msgid "``--dem-gapfill-steps`` which determines the number of progressive DEM layers to use. For urban scenes increasing this value to `4-5` can help produce better interpolation results in the areas that are left empty by the SMRF filter."
msgstr ""

#: ../../tutorials.rst:96
msgid "Example of how to generate a DTM::"
msgstr ""

#: ../../tutorials.rst:102
msgid "Measuring stockpile volume"
msgstr ""

#: ../../tutorials.rst:105
msgid "Fieldwork planning"
msgstr ""

#: ../../tutorials.rst:107
msgid "Weather conditions modify illumination and thus impact the photography results. Best results are obtained with evenly overcast or clear skies. Also look for low wind speeds that allow the camera to remain stable during the data collection process. In order to avoid shadows which on one side of the stockpile can obstruct feature detection and lessen the number of resulting points, always prefer the flights during the midday, when the sun is at the nadir so everything is consistently illuminated. Also ensure that your naked eye horizontal visibility distance is congruent with the planned flight distances for the specific project, so image quality is not adversely impacted by dust, fog, smoke, volcanic ash or pollution."
msgstr ""

#: ../../tutorials.rst:112
msgid "Flight pattern"
msgstr ""

#: ../../tutorials.rst:114
msgid "Most stockpile measurement jobs does not require a crosshatch pattern or angled gimbal as the resting angle of stockpile materials allows the camera to capture the entire stockpile sides. Only some special cases where erosion or machinery operations causes steep angles on the faces of the stockpile would benefit of the crosshatch flight pattern and angled camera gimbal but consider that these additional recognized features come at a cost, (in field labor and processing time) and the resulting improvements are sometimes negligible."
msgstr ""

#: ../../tutorials.rst:116
msgid "In most of the cases a lawn mower flight pattern is capable of producing highly accurate stockpile models."
msgstr ""

#: ../../tutorials.rst:None
msgid "a simple lawnmower flight pattern can produce accurate results"
msgstr ""

#: ../../tutorials.rst:122
msgid "Recommended overlap would be between 75% and 80% with a sidelap in the order of 65% to 70%. It is also recommended to slightly increase overlap and sidelap as the flight height is increased."
msgstr ""

#: ../../tutorials.rst:125
msgid "Flight height"
msgstr ""

#: ../../tutorials.rst:127
msgid "Flight height can be influenced by different camera models, but in a general way and in order to ensure a balance between image quality and flight optimization, it is recommended to be executed at heights 3 to 4 times the tallest stockpile height. So for a 10 meter stockpile, images can be captured at a height of 40 meters. As the flight height is increased, it is also recommended to increase overlap, so for a 40 meter height flight you can set a 65% sidelap and 75% overlap, but for a planned height of 80 meters a 70% sidelap and 80% overlap allowing features to be recognized and properly processed."
msgstr ""

#: ../../tutorials.rst:131
msgid "GCPs"
msgstr ""

#: ../../tutorials.rst:133
msgid "To achieve accuracy levels better than 3%, the use of GCP’s is advised. Typically 5 distributed GCP are sufficient to ensure accurate results. When placing or measuring GCP, equipment accuracy should be greater than the GSD. Survey grade GNSS and total stations  are intended to provide the required millimetric accuracy."
msgstr ""

#: ../../tutorials.rst:136
msgid "For further information on the use of GCPs, please refer to the `Ground Control Points section <https://docs.opendronemap.org/gcp.html>`_."
msgstr ""

#: ../../tutorials.rst:139
msgid "Processing parameters"
msgstr ""

#: ../../tutorials.rst:141
msgid "A highly accurate model can be achieved using WebODM high resolution predefined settings. Then you can further adjust some parameters as necessary."
msgstr ""

#: ../../tutorials.rst:144
msgid "If using ODM, these this reference values can help you configure the process settings."
msgstr ""

#: ../../tutorials.rst:146
msgid "--dsm: true"
msgstr ""

#: ../../tutorials.rst:148
msgid "--dem-resolution 2.0"
msgstr ""

#: ../../tutorials.rst:150
msgid "--orthophoto-resolution 1.0"
msgstr ""

#: ../../tutorials.rst:152
msgid "--feature-quality high"
msgstr ""

#: ../../tutorials.rst:154
msgid "--pc-quality high"
msgstr ""

#: ../../tutorials.rst:157
msgid "Measuring"
msgstr ""

#: ../../tutorials.rst:159
msgid "As almost 50% of the material will be found in the first 20% of the stockpile height, special care should be taken in adequately defining the base plane."
msgstr ""

#: ../../tutorials.rst:None
msgid "almost 50% of the material will be found in the first 20% of the stockpile height"
msgstr ""

#: ../../tutorials.rst:165
msgid "In WebODM Dashboard, clic on \"view map\" to start a 2D view of your project."
msgstr ""

#: ../../tutorials.rst:167
msgid "Once in the 2D map view, clic on the \"Measure volume, area and length\" button."
msgstr ""

#: ../../tutorials.rst:None
msgid "clic on the \"Measure volume, area and length\" button"
msgstr ""

#: ../../tutorials.rst:173
msgid "then clic on \"Create a new measurement\""
msgstr ""

#: ../../tutorials.rst:None
msgid "clic on \"Create a new measurement\""
msgstr ""

#: ../../tutorials.rst:179
msgid "Start placing the points to define the stockpile base plane"
msgstr ""

#: ../../tutorials.rst:None
msgid "Define the stockpile base plane"
msgstr ""

#: ../../tutorials.rst:185
msgid "Clic on \"Finish measurement\" to finish the process."
msgstr ""

#: ../../tutorials.rst:None
#: ../../tutorials.rst:None
msgid "Clic on \"Finish measurement\" to finish the process"
msgstr ""

#: ../../tutorials.rst:191
msgid "Dialog box will show the  message \"Computing ...\" for a few seconds, and after the computing is finished the volume measurement value will be displayed."
msgstr ""

#: ../../tutorials.rst:197
msgid "If you are using the command line OpenDroneMap you can use the dsm files to measure the stockpile volumes using other programs."
msgstr ""

#: ../../tutorials.rst:199
msgid "Also consider that once the limits of the stockpile are set in software like `QGis <https://www.qgis.org>`_, you will find there are some ways to determine the base plane. So for isolated stockpiles which boundaries are mostly visible, a linear approach can be used. While for stockpiles set in slopes or in bins, the base plane is better defined by the lowest point. Creation of a triangulated 3D surface to define the base plane is advised for large stockpiles. This is also valid for stockpiles paced on irregular surfaces."
msgstr ""

#: ../../tutorials.rst:203
msgid "Expected accuracy"
msgstr ""

#: ../../tutorials.rst:205
msgid "For carefully planned and executed projects, and specially when GSD is less than 1 cm, the expected accuracy should be in the range of 1% to 2%. The resulting accuracy is comparable to the commercially available photogrammetry software and the obtained using survey grade GNSS equipment."
msgstr ""

#: ../../tutorials.rst:212
msgid "Using Docker"
msgstr ""

#: ../../tutorials.rst:214
msgid "Since many users employ docker to deploy OpenDroneMap, it can be useful to understand some basic commands in order to interrogate the docker instances when things go wrong, or we are curious about what is happening. Docker is a containerized environment intended, among other things, to make it easier to deploy software independent of the local environment. In this way, it is similar to virtual machines."
msgstr ""

#: ../../tutorials.rst:216
msgid "A few simple commands can make our docker experience much better."
msgstr ""

#: ../../tutorials.rst:219
msgid "Listing Docker Machines"
msgstr ""

#: ../../tutorials.rst:221
msgid "We can start by listing available docker machines on the current machine we are running as follows:"
msgstr ""

#: ../../tutorials.rst:230
msgid "If we want to see machines that may not be running but still exist, we can add the `-a` flag:"
msgstr ""

#: ../../tutorials.rst:243
msgid "Accessing logs on the instance"
msgstr ""

#: ../../tutorials.rst:245
msgid "Using either the `CONTAINER ID` or the name, we can access any logs available on the machine as follows:"
msgstr ""

#: ../../tutorials.rst:251
msgid "This is likely to be unwieldy large, but we can use a pipe `|` character and other tools to extract just what we need from the logs. For example we can move through the log slowly using the `more` command:"
msgstr ""

#: ../../tutorials.rst:267
msgid "Pressing `Enter` or `Space`, arrow keys or `Page Up` or `Page Down` keys will now help us navigate through the logs. The lower case letter `Q` will let us escape back to the command line."
msgstr ""

#: ../../tutorials.rst:269
msgid "We can also extract just the end of the logs using the `tail` commmand as follows:"
msgstr ""

#: ../../tutorials.rst:280
msgid "The value `-5` tells the tail command to give us just the last 5 lines of the logs."
msgstr ""

#: ../../tutorials.rst:283
msgid "Command line access to instances"
msgstr ""

#: ../../tutorials.rst:285
msgid "Sometimes we need to go a little deeper in our exploration of the process for OpenDroneMap. For this, we can get direct command line access to the machines. For this, we can use `docker exec` to execute a `bash` command line shell in the machine of interest as follows:"
msgstr ""

#: ../../tutorials.rst:292
msgid "Now we are logged into our docker instance and can explore the machine."
msgstr ""

#: ../../tutorials.rst:295
msgid "Cleaning up after Docker"
msgstr ""

#: ../../tutorials.rst:297
msgid "Docker has a lamentable use of space and by default does not clean up excess data and machines when processes are complete. This can be advantageous if we need to access a process that has since terminated, but carries the burden of using increasing amounts of storage over time. Maciej Łebkowski has an `excellent overview of how to manage excess disk usage in docker <https://lebkowski.name/docker-volumes/>`_."
msgstr ""

#: ../../tutorials.rst:301
msgid "Using ODM from low-bandwidth location"
msgstr ""

#: ../../tutorials.rst:304
msgid "What is this and who is it for?"
msgstr ""

#: ../../tutorials.rst:306
msgid "Via `Ivan Gayton's repo <https://github.com/ivangayton/GDAL_scripts/>`_."
msgstr ""

#: ../../tutorials.rst:308
msgid "`OpenDroneMap <https://www.opendronemap.org/>`__ can’t always be effectively set up locally—it takes a fairly powerful machine to process large datasets—so a cloud machine can sometimes be the answer for people in the field. However, bandwidth is a problem in many low-income settings. This constraint can’t be solved completely, but the following method does a reasonable job of reducing the bandwidth needed to process drone imagery datasets on the cloud from African locations."
msgstr ""

#: ../../tutorials.rst:316
msgid "Here we present a tricky but workable process to create an OpenDroneMap cloud machine (*not* CloudODM, mind you, just a cloud-based instance of ODM that you run from the command line) and use it to remotely process large photo sets. It requires familiarity with Unix command line use, ssh, a Digital Ocean account (Amazon AWS would work as well, possibly with slight differences in the setup), and a moderate level of general computer literacy. If you aren’t fairly computer-savvy and willing to fuss with a slightly tricky setup, `CloudODM <https://www.opendronemap.org/cloudodm/>`__ is what you should be looking at."
msgstr ""

#: ../../tutorials.rst:327
msgid "The whole process is mostly targeted at someone flying substantial missions in an African or similar location looking to process data ASAP while still in a field setting. Therefore it emphasizes a workflow intended to reduce bandwidth/data transfer, rather than just the simplest way of running ODM."
msgstr ""

#: ../../tutorials.rst:334
msgid "Steps"
msgstr ""

#: ../../tutorials.rst:337
msgid "Install"
msgstr ""

#: ../../tutorials.rst:339
msgid "Create a Digital Ocean droplet with at least 4GB of RAM. That’ll cost about $20/month. Less than 4GB of RAM and the install will probably fail. When we actually run the ODM process we’ll resize it to a much larger—and more expensive—cloud machine, but between runs you can downsize it between runs to the second-cheapest droplet which costs only $10/month (the cheapest droplet, at $5/month, comes with such a small drive that you can’t downsize back to it)."
msgstr ""

#: ../../tutorials.rst:347
msgid "Should be an Ubuntu 18.04 instance to ensure dependency compatibility"
msgstr ""

#: ../../tutorials.rst:349
msgid "Create a user with sudo privileges. `Digital Ocean’s insanely good documentation <https://www.digitalocean.com/community/tutorials/initial-server-setup-with-ubuntu-18-04>`__ can help you figure this out. In our case we set up a user called ``odm``, so connecting to it is via the command ``ssh odm@xxx.xxx.xxx.xxx`` (where the x’s stand for the IPv4 address of your server). If you want to follow this example closely, *do* use the username ``odm``; then your install path will be ``/home/odm/ODM/`` and will match all of the examples in this document."
msgstr ""

#: ../../tutorials.rst:358
msgid "Go ahead and execute ``sudo apt update`` and ``sudo apt upgrade`` to ensure your server isn’t dangerously without updates. Make sure to stay with Ubuntu 18.04."
msgstr ""

#: ../../tutorials.rst:362
msgid "Download and install ODM on it from the `ODM Github <https://github.com/OpenDroneMap/ODM>`__ (regular, not WebODM) with the following commands:"
msgstr ""

#: ../../tutorials.rst:372
msgid "If you do this from the default home folder of your user (i.e. ``odm``) the path to the install will be ``/home/odm/ODM`` (abbreviated as ``~/ODM/``)."
msgstr ""

#: ../../tutorials.rst:375
msgid "There are some environmental variables that need to be set. Open the ~/.bashrc file on your machine and add the following 3 lines at the end (From `the ODM github <https://github.com/OpenDroneMap/ODM>`__). The file can be opened with ``nano ~/.bashrc`` (or whatever text editor you use in lieu of nano). Be sure to replace ``/home/odm/`` with the correct path to the location where you extracted OpenDroneMap if you didn’t do everything exactly as in our example (for example if you used a different username in your server setup):"
msgstr ""

#: ../../tutorials.rst:390
msgid "Note that the ODM github readme contains a slight error, the install directory name will be ODM, not OpenDroneMap (you’ll see this if you compare the above instructions to the ones on the ODM GitHub)."
msgstr ""

#: ../../tutorials.rst:394
msgid "In order to prevent a crash wherein the split-merge process fails to locate its own executable, we add the following lines to ``~/.bashrc`` (adjust paths if you’ve set things up differently from our example):"
msgstr ""

#: ../../tutorials.rst:404
msgid "Now you’ll need a second cloud hard drive (a “Volume” in Digital Ocean jargon) big enough to manage your project. Rule of thumb seems to be 10 times the size of your raw image set; we’ve got a 100GB image set and set up a 1000GB volume (once the run is done you should be able to get rid of most of this expensive drive capacity, but it’s needed to complete the process). Set up the volume, attach it to your droplet, and `configure its mount point <https://www.digitalocean.com/docs/volumes/how-to/mount/>`__ (in this example we’re setting it to ``/mnt/odmdata/``)."
msgstr ""

#: ../../tutorials.rst:415
msgid "Prep data and project"
msgstr ""

#: ../../tutorials.rst:417
msgid "Now push your images onto the server. You can use `Secure Copy (scp) <https://en.wikipedia.org/wiki/Secure_copy>`__ like so: ``scp -r /path/to/my/imagefolder odm@xxx.xxx.xxx.xxx:/mnt/odmdata/``."
msgstr ""

#: ../../tutorials.rst:421
msgid "This pushes the entire folder full of images (that’s what the ``-r`` option does, “recursive”) into the remote location (in our example, into the volume we attached to the cloud machine at ``/mnt/odmdata/``."
msgstr ""

#: ../../tutorials.rst:425
msgid "This will take some bandwidth. No way around the size of the files.\\ `1 <#footnote1>`__, \\ `2 <#footnote2>`__\\"
msgstr ""

#: ../../tutorials.rst:429
msgid "Directory structure"
msgstr ""

#: ../../tutorials.rst:431
msgid "ODM requires the directories on the machine to be set up just so. The critical bits are the install folder (if you installed as above, it’s ``/home/odm/ODM/``) and the project folder (i.e. ``/mnt/odmdata/myproject/``)"
msgstr ""

#: ../../tutorials.rst:436
msgid "ODM’s settings.yaml file specifies a single parent directory containing all projects. This is what goes in the project path line of the settings.yaml file (slightly confusingly, this is actually the *parent* directory of the individual project directories, which are specified by the project name parameter when calling ODM). Edit settings.yaml and set the project_path parameter to (as per our example setup) ``/mnt/odmdata/``, which in this case points to the Volume we created. Individual project directories are created within that."
msgstr ""

#: ../../tutorials.rst:445
msgid "Individual project directories, i.e. ``/mnt/odmdata/myproject/`` contain the gcp_list.txt file, the image_groups.txt file, and the images folder for each project``\\`"
msgstr ""

#: ../../tutorials.rst:448
msgid "The images folder, i.e. ``/mnt/odmdata/myproject/images/`` contains all of the images. If you set it up like this, the images don’t get re-copied because they’re already in the directory that ODM wants them in."
msgstr ""

#: ../../tutorials.rst:452
msgid "Modify settings.yaml to specify the parent directory of the project folder (in this case the Volume we created, ``/mnt/odmdata/``). Make sure the images are in the correct spot, i.e. ``/mnt/odmdata/myproject/images`` and the other ancillary files (gcp_list.txt and image_groups.txt) are in the root folder ``/mnt/odmdata/myproject/``"
msgstr ""

#: ../../tutorials.rst:458
msgid "if you have the images in separate folders for individual AOI blocks or flights (which you will if your flight management was organized), you can create an image_groups.txt file with the incantations ``for i in *; do cd $i; for j in *; do echo \"$j $i\" >> ../$i.txt; done; cd ../; done;`` and ``cd ../``, ``for i in myproject/*.txt; do cat $i >> image_groups.txt; done;``. That should create a file with the correct structure: a list of all image files and a “group name” after each one (which in this case will simply be the name of the folder it came from). Then move all of the image files into a single directory called images in the project root dir (so ``/mnt/odmdata/myproject/images/``). The image_groups.txt file will allow ODM to keep track of which images belong to the same batch, even though they’re all in a single directory."
msgstr ""

#: ../../tutorials.rst:474
msgid "Resize droplet, pull pin, run away"
msgstr ""

#: ../../tutorials.rst:476
msgid "Shut down and resize your machine to an appropriately monstrous number of CPUs and amount of memory. I use the memory-optimized machine with 24 dedicated vCPUs and 192GB of RAM (which costs about $1.60/hr—which adds up fast, it’s over $1000/month). Restart, and get to work quickly so as not to waste expensive big-droplet time."
msgstr ""

#: ../../tutorials.rst:481
msgid "Launch the ODM process via ssh using nohup (so that if you’re cut off, processing will continue)"
msgstr ""

#: ../../tutorials.rst:484
msgid "Alternately you can use GNU screen to launch the process from a screen session which won’t stop if your connection is interrupted; launch ``screen``, and use ``<ctrl> a <ctrl> d`` to detach, ``screen -r`` to re-attach. But using screen won’t get you a log file of all of the console output unless you do something specific to capture that, while nohup gives you a file with all of the console output, including error messages, for free."
msgstr ""

#: ../../tutorials.rst:491
msgid "Note: as of 2020-03 the normal incantation ``python run.py -i /path/to/image/folder project_name`` seems *not* to work; the ``-i`` or ``--image`` parameter causes a weird error. So we drop the -i parameter, and rely on the project directory line in the settings.yaml file to direct ODM to the right place. Now using (including a split-merge):"
msgstr ""

#: ../../tutorials.rst:502
msgid "This points ODM at the folder (in this example) ``/mnt/odmdata/myproject/``. Provided the image_groups.txt and gcp_list.txt are in this folder, the images are in ``/mnt/odmdata/myproject/images/``, and the project path in settings.yaml is ``/mnt/odmdata/`` it will not waste time and space copying images."
msgstr ""

#: ../../tutorials.rst:509
msgid "Note that this assumes you have an image_groups.txt file. If not, this ``-split-overlap 0`` will probably fuck things up, and the ``--split 1`` is literally a random number that will be ignored after the image_groups.txt file is loaded (I think it normally controls how many groups it splits a set of images into, but in our case we’re assuming the images are already grouped sensibly). If you don’t have a large dataset (>1000 images), omit the ``--split`` and ``--split-overlap`` options."
msgstr ""

#: ../../tutorials.rst:518
msgid "Follow the progress using tail (so that you’ll know when it’s done)"
msgstr ""

#: ../../tutorials.rst:524
msgid "You may want to keep an eye on htop (to get a sense of the resource usage so that in future you can only spin up a machine as large as necessary)"
msgstr ""

#: ../../tutorials.rst:529
msgid "After it finishes (assuming you survive that long)"
msgstr ""

#: ../../tutorials.rst:531
msgid "As soon as processing is done, shut down the machine and resize it back down to the inexpensive minimum capacity."
msgstr ""

#: ../../tutorials.rst:533
msgid "Start the machine back up, and log in via ssh."
msgstr ""

#: ../../tutorials.rst:534
msgid "If you want to save download bandwidth, you can compress the orthophoto using GDAL. Don’t add overviews, do that on your local machine to avoid making the file bigger before downloading it."
msgstr ""

#: ../../tutorials.rst:542
msgid "Download using scp: ``scp odm@xxx.xxx.xxx.xxx:/mnt/odmdata/myproject/odm_orthophoto/odm_orthophoto.tif`` (or grab the compressed version you created in the last step)"
msgstr ""

#: ../../tutorials.rst:546
msgid "Once you get the file on your local computer, you can use QGIS to add overviews (“pyramids”) or use the GDAL command ``gdaladdo -r average /path/to/image.tif 2 4 8 16 32 64 128 256 512 1024``."
msgstr ""

#: ../../tutorials.rst:550
msgid "You can archive the odm_texturing, odm_georeferencing, and odm-dem folders using tar to make them easier to download in one piece (and maybe smaller)."
msgstr ""

#: ../../tutorials.rst:561
msgid "Using Potree 3D viewer module on WebODM"
msgstr ""

#: ../../tutorials.rst:564
msgid "Cameras"
msgstr ""

#: ../../tutorials.rst:565
msgid "Activate this function to display camera positions."
msgstr ""

#: ../../tutorials.rst:567
msgid "You can also click in the camera icon to display single images in a frame on the upper right corner. A click on the image frame toggles into full screen mode."
msgstr ""

#: ../../tutorials.rst:569
msgid "Within the image frame there are links to download the image and the GeoJSON camera file."
msgstr ""

#: ../../tutorials.rst:None
msgid "Camera locations"
msgstr ""

#: ../../tutorials.rst:576
#: ../../tutorials.rst:None
msgid "Textured model"
msgstr ""

#: ../../tutorials.rst:578
msgid "Activate this function to show load the textured model. Depending on the file size and connection speed, it may take several seconds to load."
msgstr ""

#: ../../tutorials.rst:585
msgid "Appearance"
msgstr ""

#: ../../tutorials.rst:590
msgid "Point budget"
msgstr ""

#: ../../tutorials.rst:591
msgid "For both appearance and performance purposes, the point budget on the scene can be managed. Some old and less capable machines would benefit from a 500,000 point budget while most mid-range specs machine are capable of handling 1 to 2 million point budget."
msgstr ""

#: ../../tutorials.rst:593
msgid "A 5 to 7 million point budget produces a smooth point cloud 3d model, but may result in a high resource demanding process."
msgstr ""

#: ../../tutorials.rst:595
msgid "Default point budget value is set to 1,000,000."
msgstr ""

#: ../../tutorials.rst:598
msgid "Field of view"
msgstr ""

#: ../../tutorials.rst:600
msgid "In order to control model elements to be included within the scene the field of view can be adjusted. Default value is set to 60 degrees."
msgstr ""

#: ../../tutorials.rst:None
msgid "Field of view adjustment"
msgstr ""

#: ../../tutorials.rst:608
msgid "Eye Dome-lighting"
msgstr ""

#: ../../tutorials.rst:610
msgid "The Potree Point Cloud 3d viewer module can implement eye dome-lighting, a lighting model that accentuates the shapes of objects."
msgstr ""

#: ../../tutorials.rst:612
msgid "Eye Dome-lighting group objects, shade their outlines and enhances depth perception in scientific visualization images. It is useful for recognition and measurement of structures within a model. It can be modified by adjusting Radius, Strength and Opacity."
msgstr ""

#: ../../tutorials.rst:614
msgid "By default, Eye Dome-Lighting is enabled on Potree 3D viewer, but it can be disabled by clicking on the enable option."
msgstr ""

#: ../../tutorials.rst:None
msgid "Eye dome lighting adjustment"
msgstr ""

#: ../../tutorials.rst:622
msgid "Background"
msgstr ""

#: ../../tutorials.rst:624
msgid "Potree 3D viewer background can be modified. Available options are **Skybox** / **Gradient** / **Black** / **White** / **None**"
msgstr ""

#: ../../tutorials.rst:None
msgid "Background selection"
msgstr ""

#: ../../tutorials.rst:631
msgid "Other"
msgstr ""

#: ../../tutorials.rst:633
msgid "**Splat Quality** = Splat quality can be adjusted to standard or high quality, to improve the appearance of the model."
msgstr ""

#: ../../tutorials.rst:635
msgid "**Min node size** = Min node size option will impact the point density of the nodes represented."
msgstr ""

#: ../../tutorials.rst:637
msgid "**Box** = Display the boxes of the nodes."
msgstr ""

#: ../../tutorials.rst:639
msgid "**Lock view** = Lock the point cloud view, preventing to load or unload points to the model."
msgstr ""

#: ../../tutorials.rst:642
msgid "Tools"
msgstr ""

#: ../../tutorials.rst:645
msgid "Measurement"
msgstr ""

#: ../../tutorials.rst:647
msgid "Potree 3D viewer module provides several tools for measurement. This tool set consist of 12 elements. It also has controls for showing or hiding the resulting measurement labels."
msgstr ""

#: ../../tutorials.rst:650
msgid "Measurements are performed by left clicking on the desired points and for some tools right clicking is needed in order to terminate the process."
msgstr ""

#: ../../tutorials.rst:None
msgid "Tools - Measurement tools"
msgstr ""

#: ../../tutorials.rst:656
msgid "**Angle**"
msgstr ""

#: ../../tutorials.rst:658
msgid "This tool measures the tridimensional angle formed by the lines connecting 3 points. To start a measurement, click on the angle icon, then left click on 3 point and the process will be automatically ended. Further information can also be obtained from selecting this element under the scene section."
msgstr ""

#: ../../tutorials.rst:662
msgid "**Point**"
msgstr ""

#: ../../tutorials.rst:664
msgid "This tool highlights a selected point and display its XYZ coordinate. To start a measurement, click on the point icon, then click on the desired point and the process will be automatically ended. Further information can also be obtained from selecting this element under the scene section."
msgstr ""

#: ../../tutorials.rst:668
msgid "**Distance**"
msgstr ""

#: ../../tutorials.rst:670
msgid "This tool measures the tridimensional distance of the lines connecting a series of points. To start a measurement, click on the distance icon and start clicking on the desired points (two or more). Right click to finish measurement. Further information such as Total length can also be obtained from selecting this element under the scene section."
msgstr ""

#: ../../tutorials.rst:674
msgid "**Height**"
msgstr ""

#: ../../tutorials.rst:676
msgid "This tool measures the height or vertical distance between two points. To start a measurement, click on the height icon and then click on the desired two points. The process will be automatically ended. Further information can also be obtained from selecting this element under the scene section."
msgstr ""

#: ../../tutorials.rst:None
msgid "Heigth measurement"
msgstr ""

#: ../../tutorials.rst:684
msgid "**Circle**"
msgstr ""

#: ../../tutorials.rst:686
msgid "This tool measures the radius of a circle formed by three points. To start a measurement, click on the circle icon and then click on the desired two points. The process will be automatically ended. Further information such as Circumference can also be obtained from selecting this element under the scene section."
msgstr ""

#: ../../tutorials.rst:690
msgid "**Azimuth**"
msgstr ""

#: ../../tutorials.rst:692
msgid "This tool measures the azimuthal angle of a line. This line is formed by two points selected by the user, the angle is measured in degrees, clockwise from 0 to 360 and starting from the geographical north. To start a measurement, click on the azimuth icon and then click on the desired two points. The process will be automatically ended. Further information can also be obtained from selecting this element under the scene section."
msgstr ""

#: ../../tutorials.rst:696
msgid "**Area**"
msgstr ""

#: ../../tutorials.rst:698
msgid "This tool measures the horizontal area formed by a polygon. To start a measurement, click on the area icon and start clicking on the points forming the desired polygon (three or more). Right click to finish measurement. Further information can also be obtained from selecting this element under the scene section."
msgstr ""

#: ../../tutorials.rst:702
msgid "**Volume (cube)**"
msgstr ""

#: ../../tutorials.rst:704
msgid "This tool measures the volume formed by a cube. To start a measurement, click on the volume (cube) icon and click on the model to place the cube. It is possible relocate, redimension and rotate the cube using the displayed handlers. Right click to finish measurement. Further information can also be obtained from selecting this element under the scene section."
msgstr ""

#: ../../tutorials.rst:708
msgid "**Volume (sphere)**"
msgstr ""

#: ../../tutorials.rst:710
msgid "This tool measures the volume formed by a sphere. To start a measurement, click on the volume (sphere) icon and click on the model to place the sphere. It is possible relocate, redimension and rotate the sphere using the displayed handlers. Right click to finish measurement. Further information can also be obtained from selecting this element under the scene section."
msgstr ""

#: ../../tutorials.rst:714
msgid "**Height profile**"
msgstr ""

#: ../../tutorials.rst:716
msgid "This tool creates a height profile formed by a line on the model. To start a measurement, click on the Height profile icon and then form a line on the model by clicking on the desired points (two or more). Right click to finish measurement. Further information and options, such as \"Show 2d Profile\", can also been obtained from selecting this element under the scene section."
msgstr ""

#: ../../tutorials.rst:None
msgid "Heigth profile"
msgstr ""

#: ../../tutorials.rst:724
msgid "**Annotation**"
msgstr ""

#: ../../tutorials.rst:726
msgid "This tool creates an annotation label on a highlighted point on the model. To start a measurement, click on the annotation icon and then click on the desired point. The process will be automatically ended. To edit the annotation, select this element under the scene section, then edit Title and Description."
msgstr ""

#: ../../tutorials.rst:730
msgid "**Remove measurements**"
msgstr ""

#: ../../tutorials.rst:732
msgid "This tool removes all measurements on the model. To remove all measurement, click on the \"Remove measurements\" icon."
msgstr ""

#: ../../tutorials.rst:737
msgid "Clipping"
msgstr ""

#: ../../tutorials.rst:None
msgid "Tools - Clipping tools"
msgstr ""

#: ../../tutorials.rst:744
msgid "Point cloud can be clipped by selecting an area. Clipping options include **None** / **Highlight** / **Inside** / **Outside**"
msgstr ""

#: ../../tutorials.rst:746
msgid "To clip a point cloud, click on the volume clip icon, place the cube on the model and relocate, redimension and rotate to contain the desired area. Highlight is set by default as the clipping method. If display only the points contained within the cube click on \"Inside\", otherwise click on \"Outside\"."
msgstr ""

#: ../../tutorials.rst:749
msgid "To remove the clipping volume or polygons click on the \"Remove all measurements\" icon."
msgstr ""

#: ../../tutorials.rst:None
msgid "Tools - Clipping"
msgstr ""

#: ../../tutorials.rst:756
msgid "Navigation"
msgstr ""

#: ../../tutorials.rst:None
#: ../../tutorials.rst:None
#: ../../tutorials.rst:None
msgid "Tools - Navigation controls"
msgstr ""

#: ../../tutorials.rst:762
msgid "Potree 3D viewer have 4 Navigation controls which define its behavior."
msgstr ""

#: ../../tutorials.rst:764
msgid "**Earth Control**"
msgstr ""

#: ../../tutorials.rst:766
msgid "Earth control navigated as anchored to the ground. Mouse left button moves the model horizontally, mouse wheel controls zoom and right button orbits the model."
msgstr ""

#: ../../tutorials.rst:768
msgid "**Fly control**"
msgstr ""

#: ../../tutorials.rst:770
msgid "Fly control moves the camera as in birds eye using the keyboard. Keys \"W\" and \"S\" moves forward and backwards, respectively and in the direction of the camera, while \"A\" and \"D\" moves left and right respectively. Also, the \"R\" and \"F\" keys moves the camera up and down. The mouse left button changes the direction of the camera, mouse wheel controls zoom, and right button moves the camera in the XYZ axis."
msgstr ""

#: ../../tutorials.rst:772
#: ../../tutorials.rst:778
msgid "The speed for these movements can be controlled using the sliding control."
msgstr ""

#: ../../tutorials.rst:774
msgid "**Helicopter control**"
msgstr ""

#: ../../tutorials.rst:776
msgid "Helicopter control moves the camera as in an aircraft using the keyboard. Keys \"W\" and \"S\" moves forward and backwards, respectively restricted in a horizontal plane, while \"A\" and \"D\" moves left and right respectively. Also, the \"R\" and \"F\" keys moves the camera up and down. The mouse left button changes the direction of the camera, mouse wheel controls zoom, and right button moves the model in the XY axis."
msgstr ""

#: ../../tutorials.rst:780
msgid "**Orbit Control**"
msgstr ""

#: ../../tutorials.rst:782
msgid "Orbit Control is the default navigation behavior. The mouse left button orbits the model, the wheel controls zoom and the right button moves the model in the XYZ axis."
msgstr ""

#: ../../tutorials.rst:784
msgid "**Full extent**"
msgstr ""

#: ../../tutorials.rst:786
msgid "Full extent button restores the model view."
msgstr ""

#: ../../tutorials.rst:788
msgid "**Navigation cube**"
msgstr ""

#: ../../tutorials.rst:790
msgid "Navigation cube displays a wireframe cube containing the model."
msgstr ""

#: ../../tutorials.rst:792
msgid "**Compass**"
msgstr ""

#: ../../tutorials.rst:794
msgid "Compass button displays a compass on the upper right corner."
msgstr ""

#: ../../tutorials.rst:796
msgid "**Camera animation**"
msgstr ""

#: ../../tutorials.rst:798
msgid "The camera animation button creates a camera animation path. Position of the camera is defined by the points on the green line while the points in the blue line are the location towards the camera is intended to be facing."
msgstr ""

#: ../../tutorials.rst:800
msgid "To create an animation, adjust the points for the camera locations and camera direction, then select the camera element under the Scene section to create more point, change animation speed or play the animation."
msgstr ""

#: ../../tutorials.rst:808
msgid "Scene"
msgstr ""

#: ../../tutorials.rst:810
msgid "The Scene section displays a file tree containing all the scene elements. Elements are arranged in six groups, which are **Point clouds** / **Measurements** / **Annotations** / **Other** / **Vector** / **Images**"
msgstr ""

#: ../../tutorials.rst:814
msgid "Each element under these groups can be selected to get further information or to control its properties."
msgstr ""

#: ../../tutorials.rst:816
msgid "For instance, point clouds properties can be modified to show elevation and also the color ramp cam be customized."
msgstr ""

#: ../../tutorials.rst:823
msgid "`Learn to edit <https://github.com/opendronemap/docs#how-to-make-your-first-contribution>`_ and help improve `this page <https://github.com/OpenDroneMap/docs/blob/publish/source/tutorials.rst>`_!"
msgstr ""