JPEG ....\1.jpg ....\2.jpg ....\invZigzag.m ....\Lena.bmp ....\Lena2.bmp ....\main.asv ....\main.m ....\main2.asv ....\main2.m ....\my_dct2.asv ....\my_dct2.m ....\my_idct2.m ....\PSNR.m ....\toZigzag.m