Юзай цю штуку в 4 лабі

  byte [][] tempr = new byte[width][height];
        byte [][] tempg = new byte[width][height];
        byte [][] tempb = new byte[width][height];
                         tempr[j][i] = red[j][i];
                         tempb[j][i] = blue[j][i];
                         tempg[j][i] = green[j][i];
                          red[j][i] = (byte)(red[j][height-i]) ;
                          green[j][i] = blue[j][height-i] ;
                          blue[j][i] = green[j][height-i] ;
                          blue[j][height-i] = tempb[j][i];
                          green[j][height-i] = tempg[j][i];
                          red[j][height-i] = tempr[j][i];