MDCT in image

Started by April 12, 2009
Hi, i am working on implementing JPEG type image coding using MDCT. I am using a window size of 16X16 and have tried some windows like rectangular windows, kaiser based etc but am not able to reconstruct the image perfectly as seen in the dct. I have read a paper on watermarkin which uses MDCT, where phase congruency of the original image is used for transform coding but am not sure about how it works. Can anyone suggests me about MDCT implementation in an image. Your help will be greatly appreciated.