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<title>sane-devel: Casio Digital Cameras (all types)</title>
<h1>Casio Digital Cameras (all types)</h1>
<a href="mailto:erikyyy@studbox.uni-stuttgart.de"><i>erikyyy@studbox.uni-stuttgart.de</i></a><br>
<i>Thu, 11 Jun 1998 16:20:43 +0200</i>
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someone of you told me URLs about the CASIO cameras.<br>
<p>
i downloaded the programs, and they work.<br>
<p>
of course a SANE driver would be better.<br>
<p>
i'll tell, what the differences between Casio Cameras and normal<br>
scanners are, and other interesting things:<br>
<p>
<p>
- previews can be downloaded from the cam. (goes faster)<br>
- 115200 baud is best, but setserial needs to be called.<br>
this should be included in the code !<br>
you have to tell the camera, which speed you want.<br>
- camera is connected to RS232.<br>
- no timing problems<br>
- camera stores several pictures. (may be very many, depending on camera<br>
type)<br>
- camera supports 2 formats. (high and low quality)<br>
- camera stores pictures in JPEG !!!!!<br>
- camera sends pictures in JPEG !!!!!<br>
- need to convert JPEG to pnm in order to work with sane.<br>
- converting from jpeg to pnm only to compress the picture after scannign<br>
it, with a JPEG compressor may be quality reducing.<br>
- you cannot just say "SCAN". you must instead choose, WHAT you scan :-)<br>
- SCAN is not the right word. remember, you can even tell the camera<br>
to shoot a picture via RS232, so SCAN mustn't be used for downloading,<br>
but shooting new pictures.<br>
- this leads to problems. should the number of the picture to scan be<br>
a device parameter or what ?<br>
- software can tell camera, wich picture to show on cameras LCD display.<br>
<p>
so there are various ways to develop program for camera.<br>
<p>
nice idea would be to download ALL thumbnail pictures, display them,<br>
tag some, and start transfer afterwards.<br>
(does this fit into SANE's way of doing things ?)<br>
<p>
the preview _window_ is not really useful ?<br>
<p>
perhaps for a first version it would be enough to choose the picture number<br>
the way you choose the brightness of a quickcam. then you do<br>
"Acquire Preview" and get the thumbnail image.<br>
"Scan" Downloads the full image.<br>
<p>
<p>
unfortunately i am out of time, and i am no good in GTK prorgamming<br>
<p>
<p>
the cameras in question are all casio digital cameras !<br>
the driver already exists, and it works !<br>
(but it is not SANE compatible)<br>
<p>
<p>
remember: casio cameras are MANY :-) and i like them.<br>
<p>
byebye<br>
Erik<br>
<p>
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<li> <b>Next message:</b> <a href="0090.html">Ted Slusser: "Fujitsu Scanners"</a>
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