int biggestMinDist = 0;

    for(x=d+2; x<w-d-2; x++)
        for(y=d+2; y<h-d-2; y++ ){
            int dist = 0;
            int mindist = -1;
            int vx, vy, dx, dy;
            for(vx=-2; vx<=2; vx++)
                for(vy=-2; vy<=2; vy++) if(vx||vy){
                    dist = 0;
                    for(dx=-d;dx<d+1;dx++)
                    for(dy=-d;dy<d+1;dy++){
                        dist += square_pixel(
                                    sub_pixels(  img1.img[x+dx][y+dy],  img1.img[x+dx+vx][y+dy+vy]  ));
                    }
                    if(mindist==-1||mindist>dist) mindist = dist;
                }
            point_value.img[x][y].r = mindist;
            if (mindist>biggestMinDist) biggestMinDist = mindist;
        }

    for(x=d+2; x<w-d-2; x++)
        for(y=d+2; y<h-d-2; y++ ){
            int vx, vy;
            point_special.img[x][y].r = 1;
            if(point_value.img[x][y].r<biggestMinDist/5){point_special.img[x][y].r = 0; goto done;}
            for(vx=-4;vx<=4;vx++)
                for(vy=-4;vy<=4;vy++)if(vx!=0 || vy!=0){
                    if(point_value.img[x][y].r<point_value.img[x+vx][y+vy].r){point_special.img[x][y].r = 0; goto done;}

                }
            done:
        ;
    }

    for(x=d/2; x<w-d/2; x++)
        for(y=d/2; y<h-d/2; y++ ){
            frame2(x, y)->Red = 0;
            frame2(x, y)->Green = 0;
            frame2(x, y)->Blue = 0;
            if(point_special.img[x][y].r){
                frame2(x, y)->Red = 255;

            }
        }