Here are three problems that I can't understand:

1. Usually what does de-correlation mean in image-processing?

2. What's the benefit of decorrelation?

3. Is there some relationship among neighbouring coefficients?

I would really appreciate if someone can help me!

Here are three problems that I can't understand:

1. Usually what does de-correlation mean in image-processing?

2. What's the benefit of de-correlation when it comes to image splicing?

3. Is there some relationship among neighbouring coefficients? And I read a paper which says coefficients difference matrix(got by coefficients subtracting its neighbor) can eliminate the relationship of the coefficients，How to understand this?

I would really appreciate if someone can help me!

Here are three problems that I can't understand  :1. Usually what does decorrelation mean in image-processing? 2. What's the benefit of decorrelation? 3. Is there some relationship among neighbor coefficients? I would really appreciate if someone can help me!

Here are three problems that I can't understand:

1. Usually what does de-correlation mean in image-processing?

2. What's the benefit of decorrelation?

3. Is there some relationship among neighbouring coefficients?

I would really appreciate if someone can help me!