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| private void jMenuItem4ActionPerformed(java.awt.event.ActionEvent evt) {
int x1 = jLabel1.getWidth();
int y1 = jLabel1.getHeight();
int w = imgglobal.getWidth();
int h = imgglobal.getHeight();
BufferedImage imageBord = new BufferedImage(imgglobal.getWidth(),imgglobal.getHeight(), imgglobal.getType());
//****************************
int sobel_x[][] = { {-1,0,1},
{-2,0,2},
{-1,0,1}};
int sobel_y[][] = {{-1,-2,-1},
{0,0,0},
{1,2,1}};
int pixel_x;
int pixel_y;
for (int x=1; x < w-2; x++) {
for (int y=1; y < h-2; y++) {
pixel_x = (sobel_x[0][0] * imgglobal.getRGB(x-1,y-1)) + (sobel_x[0][1] * imgglobal.getRGB(x,y-1)) + (sobel_x[0][2] * imgglobal.getRGB(x+1,y-1)) +
(sobel_x[1][0] * imgglobal.getRGB(x-1,y)) + (sobel_x[1][1] * imgglobal.getRGB(x,y)) + (sobel_x[1][2] * imgglobal.getRGB(x+1,y)) +
(sobel_x[2][0] * imgglobal.getRGB(x-1,y+1)) + (sobel_x[2][1] * imgglobal.getRGB(x,y+1)) + (sobel_x[2][2] * imgglobal.getRGB(x+1,y+1));
pixel_y = (sobel_y[0][0] * imgglobal.getRGB(x-1,y-1)) + (sobel_y[0][1] * imgglobal.getRGB(x,y-1)) + (sobel_y[0][2] * imgglobal.getRGB(x+1,y-1)) +
(sobel_y[1][0] * imgglobal.getRGB(x-1,y)) + (sobel_y[1][1] * imgglobal.getRGB(x,y)) + (sobel_y[1][2] * imgglobal.getRGB(x+1,y)) +
(sobel_y[2][0] * imgglobal.getRGB(x-1,y+1)) + (sobel_y[2][1] * imgglobal.getRGB(x,y+1)) + (sobel_x[2][2] * imgglobal.getRGB(x+1,y+1));
int val = (int)Math.sqrt((pixel_x * pixel_x) + (pixel_y * pixel_y));
if(val < 0)
{
val = 0;
}
if(val > 255)
{
val = 255;
}
imageBord.setRGB(x,y,val);
}
}
//****************************
imgglobal = imageBord;
imagelabel = imgglobal.getScaledInstance(x1,y1,Image.SCALE_DEFAULT);
//pour recadrer mon image dans mon label
convol = new ImageIcon(imagelabel);
jLabel1.setIcon(convol);
} |
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