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esp32cam-demo
kopia lustrzana https://github.com/alanesq/esp32cam-demo
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Update ESP32cam-demo.ino

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Alan 2023-10-17 08:53:44 +01:00 zatwierdzone przez GitHub
rodzic eb0271b549
commit 5d07ac54ec
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ESP32cam-demo.ino
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@ -92,7 +92,7 @@
// ---------------------------------------------------------------
char* stitle = "ESP32Cam-demo"; // title of this sketch
char* sversion = "16oct23"; // Sketch version
char* sversion = "17oct23"; // Sketch version
#define ENABLE_OTA 0 // If OTA updating of this sketch is enabled (requires ota.h)
const String OTAPassword = "password"; // Password reuired to enable OTA (supplied as - http://<ip address>?pwd=xxxx )
@ -1629,29 +1629,31 @@ void readGreyscaleImage() {
// read image data and calculate average pixel value (as demonstration of reading the image data)
// note: image x = i % WIDTH, image y = floor(i / WIDTH)
unsigned long dataSize = fb->width * fb->height;
unsigned long avrg = 0;
byte minV=255; byte maxV=0;
for (int y=0; y < fb->height; y++) {
for (int x=0; x < fb->width; x++) {
avrg += fb->buf[(y * fb->width) + x];
byte pixelVal = fb->buf[(y * fb->width) + x];
if (pixelVal > maxV) maxV = pixelVal;
if (pixelVal < minV) minV = pixelVal;
}
}
client.println("Greyscale Image: The average brightness of the " + String(dataSize) + " pixels is " + String(avrg / dataSize));
client.println("Greyscale Image: The highest value pixel is " + String(maxV) + ", the lowest is " + String(minV));
client.write("<br><br><a href='/'>Return</a>\n"); // link back
// resize the image
int newWidth = 100; int newHeight = 36;
int newWidth = 110; int newHeight = 38; // 100x36
byte newBuf[newWidth * newHeight];
resize_esp32cam_image_buffer(fb->buf, fb->width, fb->height, newBuf, newWidth, newHeight);
// display image as asciiArt
char asciiArt[] = {' ','.',',',':',';','+','*','?','%','S','#','@'}; // characters to use (light to dark)
int noAsciiChars = sizeof(asciiArt) / sizeof(asciiArt[0]); // number of characters available
client.write("<br><pre>"); // 'pre' stops variable character spacing
char asciiArt[] = {'@','#','S','%','?','*','+',';',':',',','.'}; // characters to use
int noAsciiChars = sizeof(asciiArt) / sizeof(asciiArt[0]); // number of characters available
client.write("<br><pre>"); // 'pre' stops variable character spacing
for (int y=0; y < newHeight; y++) {
client.write("</pre><pre style='line-height: 0.2;'>"); // 'line-heigh' adjusts spacing between lines
client.write("</pre><pre style='line-height: 0.15;'>"); // 'line-heigh' adjusts spacing between lines - 0.2
for (int x=0; x < newWidth; x++) {
int tpos = map(newBuf[y*newWidth+x],0,255,0,noAsciiChars-1); // convert pixel brightness to ascii character
client.write(asciiArt[noAsciiChars - tpos]);
int tpos = map(newBuf[y*newWidth+x], minV, maxV, 0, noAsciiChars - 1); // convert pixel brightness to ascii character
client.write(asciiArt[tpos]);
}
}
client.write("<br></pre>");