Here are some problems:
- Does it mean these is some relationship among neighboring pixels?
- And I've read about DCT has a property of de-correlation,I have a doubt whether it means DCT neighbor coefficients have no relationship?
- I've read some paper which says diffrence 2D-array(DCT coefficient subtracting by its neighbor) can weaken the relation of coefficients.How to understand this?
I would really appreciate if someone can help me!