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Why iplimage's widthStep is different from original image width?

widthstep

asked 2014-01-29 23:18:39 -0600

james
1

I know widthStep is the minimum number of 4's multiple which is larger than image width. But I can't understand WHY. Why they waste the memory to make iplimage's width 4's multiple? What I want to know is the ADVANTAGE if we use 4's multiple number of image width. I want know it concretely. Please help me.

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answered 2014-01-30 00:31:11 -0600

flag of Australia

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It was advantageous back in the old CPU days, probably not so much now. Here is a good post on it

http://stackoverflow.com/questions/2185944/why-must-stride-in-the-system-drawing-bitmap-constructor-be-a-multiple-of-4

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Asked: 2014-01-29 23:18:39 -0600

Seen: 861 times

Last updated: Jan 30 '14

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