import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;

//The class for carrying out the filtering
public class ImgFil{
       // Median filter
        public Image filMedian(Image image) {

            // indice for expressing the x,y differences from the center
            int[] iDx = { -1, 0, 1, -1, 0, 1, -1, 0, 1 };
            int[] iDy = { -1, -1, -1, 0, 0, 0, 1, 1, 1 };


            // Getting the pixel array of the original image 3
            ImageData imd = image.getImageData();

            // Setting the pixel array for the new result image
            ImageData imd2 =image.getImageData();

            for (int y = 1; y < (imd.height-1); y++) {
                for (int x = 1; x < (imd.width-1); x++) {
                    int iRsum = 0;
                    int iGsum = 0;
                    int iBsum = 0;

                    for (int i = 0; i < 9; i++) {
                        int iC = imd.getPixel(x+iDx[i], y+iDy[i]);
                        int iR = iC & 0x00ff;
                        int iG = (iC >> 8) & 0x00ff;
                        int iB = (iC >> 16) & 0x00ff;

                        // Adding the RGB values of pixels in the eight neighborhood repeatedly
                        iRsum += iR;
                        iGsum += iG;
                        iBsum += iB;
                    }
                    // Getting 5th large number
                    int iRd = iRsum;
                    int iGd = iGsum;
                    int iBd = iBsum;
                    int iCd = (iBd << 16) + (iGd << 8) + iRd;
                    imd2.setPixel(x, y, iCd);
                }
            }
            Image newImage = new Image(null, imd2);
            return newImage;
        }
}