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Remove grid-like fringes from image [duplicate]

Remove grid-like fringes from image [duplicate]
  1. How do I turn off guide lines in Photoshop?

How do I turn off guide lines in Photoshop?

Hide / Show Guides: Go to View in the menu and select Show and select Guides to toggle hide and show guides.

Blocking Measurement of blocking artifacts in images
Measurement of blocking artifacts in images
What is blocking artifact?What is blocking artifact in DCT based image compression scheme? What is blocking artifact?Block-based prediction and tran...
Negative Is the negative spectrum (by DFT) of a real signal needed to reconstruct it?
Is the negative spectrum (by DFT) of a real signal needed to reconstruct it?
What does DFT do to a signal?What do negative values in FFT mean?Why are there negative frequencies in FFT?What happens if we apply DFT twice to a si...
Kernel Estimate the Convolution Kernel Based on the Original 2D Array and the Convolved 2D Array
Estimate the Convolution Kernel Based on the Original 2D Array and the Convolved 2D Array
How do you calculate convolution kernel?What is a kernel in computer vision?What is matrix convolution? How do you calculate convolution kernel?Take...