Anyone know the code for GRID BASED SAMPLING

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ANCY
ANCY 2013-12-27
评论： Image Analyst 2013-12-29
If a full image is given.Then how can i find the image patches based on color.I read in a paper that grid based sampling is used for finding the patches in a an image based on color.Please share with me the code for subsampling of the image based on color.one knows the code for grid based sampling of images.Then please share it.

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回答（1 个）

Image Analyst
Image Analyst 2013-12-27
You mean like subsampling the image with points on a grid
stepX = 2; % Every other column pixel.
stepY = 3; % Every third row pixel.
subsampledImage = grayImage(1:stepY:end, 1:stepX:end);
??? Otherwise specify what you do mean.
  2 个评论
ANCY
ANCY 2013-12-29
If a full image is given.Then how can i find the image patches based on color.I read in a paper that grid based sampling is used for finding the patches in a an image based on color.Please share with me the code for subsampling of the image based on color.
Image Analyst
Image Analyst 2013-12-29
I don't know what that is. You'd best follow the instructions in the paper. I do have some color segmentation demos in my File Exchange if you want to try standard thresholding approaches. http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

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