Can anyone please explain to me how to compute DCT? I'm finding it hard to understand it. 
I attached the formulas the Discrete Cosine Transform (DCT) and it's Inverse-DCT.
sandz24 0 Newbie Poster
DeanMSands3 69 Junior Poster
Read this:
http://en.wikipedia.org/wiki/Jpeg#Discrete_cosine_transform
I'll see if I can find some source code.
sandz24 0 Newbie Poster
I read something about compression. Should I compressed the image after i watermarked it. I'm basically goint to use DCT for image watermarking.
DeanMSands3 69 Junior Poster
I'm assuming you mean a visible stamp on the image. Yes, you should compress AFTER watermarking.
sandz24 0 Newbie Poster
No it's an invisible watermark
white_pearl 0 Newbie Poster
by which method we can embedded the original image with watermark image?
white_pearl 0 Newbie Poster
how to implement 2-d dct in xilinx?
Be a part of the DaniWeb community
We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.