What does zero padding mean?

Integral image zero-pads the top and left side of the output integral image, by this do they mean, are they referring to the padsize vector which is a vector of nonnegative integers that specifies the amount of padding to add to the dimension and the dimension along which to add it to?

Cheers, Neo Cornel

Answer 1

[Image Analyst]

It means you add a layer of pixels all the way around the image that have value 0. This is done by padarray() in the Image Processing Toolbox.

[Neo]

Thank you, do you mean add a layer of pixels around the image where the image has the value 0? Cheers,

Neo

[Image Analyst]

No. It means to enlarge the image by adding rectangular strips of zeros outside the rectangular edge of the image, so that you have a new larger rectangular image with a black frame around it.

[Neo]

Crystal. Cheers, mate.