Hi,
Thank you for your answer.
I modified the code of example_15_10 (below) and inserted
image(source,0,0);
but it displays only the destination image.
What is wrong? I want to see both images.
Best,
Maria
====
// Learning Processing
// Daniel Shiffman
//
http://www.learningprocessing.
com
// Example 15-10: Brightness threshold
PImage source; // Source image
PImage destination; // Destination image
void setup() {
size(200,200);
source = loadImage("sunflower.jpg");
destination = createImage(source.width, source.height, RGB);
}
void draw() {
float threshold = 127;
// We are going to look at both image's pixels
source.loadPixels();
destination.loadPixels();
for (int x = 0; x < source.width; x++ ) {
for (int y = 0; y < source.height; y++ ) {
int loc = x + y*source.width;
// Test the brightness against the threshold
if (brightness(source.pixels[loc]
) > threshold){
destination.pixels[loc] = color(255); // White
} else {
destination.pixels[loc] = color(0); // Black
}
}
}
// We changed the pixels in destination
image(source,0,0);
destination.updatePixels();
// Display the destination
image(destination,0,0);
