/**
* Method to show large changes in color
*
* @param edgeDist the distance for finding edges
*/
public void edgeDetection(int edgeDist) {
Pixel leftPixel = null;
Pixel rightPixel = null;
Pixel[][] pixels = this.getPixels2D();
Color rightColor = null;
for (int row = 0; row < pixels.length; row++) {
for (int col = 0; col < pixels[0].length - 1; col++) {
leftPixel = pixels[row][col];
rightPixel = pixels[row][col + 1];
rightColor = rightPixel.getColor();
if (leftPixel.colorDistance(rightColor) > edgeDist) leftPixel.setColor(Color.BLACK);
else leftPixel.setColor(Color.WHITE);
}
}
// code to improve edge detection
Pixel topPixel = null;
Pixel bottomPixel = null;
Color bottomColor = null;
for (int col = 0; col < pixels[0].length; col++) {
for (int row = 0; row < pixels.length - 1; row++) {
topPixel = pixels[row][col];
bottomPixel = pixels[row + 1][col];
bottomColor = bottomPixel.getColor();
if (topPixel.colorDistance(bottomColor) > edgeDist) {
topPixel.setColor(Color.BLACK);
} else {
topPixel.setColor(Color.WHITE);
}
}
}
}
/**
* Method to show large changes in color
*
* @param edgeDist the distance for finding edges
*/
public void edgeDetection(int edgeDist) {
Pixel leftPixel = null;
Pixel rightPixel = null;
Pixel[][] pixels = this.getPixels2D();
Color rightColor = null;
for (int row = 0; row < pixels.length; row++) {
for (int col = 0; col < pixels[0].length - 1; col++) {
leftPixel = pixels[row][col];
rightPixel = pixels[row][col + 1];
rightColor = rightPixel.getColor();
if (leftPixel.colorDistance(rightColor) > edgeDist
|| (row + 1 > pixels.length
&& leftPixel.colorDistance(pixels[row + 1][col].getColor()) > edgeDist))
leftPixel.setColor(Color.BLACK);
else leftPixel.setColor(Color.WHITE);
}
}
}