I want to process my image as blocks of size 5*5 and want to map each block to a value based on the color of its central pixel. Next I want to perform block matching with blocks of same or similar key. Please help with matlab code.

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Merlyn Tom
Merlyn Tom 2015-12-1
评论： Image Analyst 2015-12-1
For the example code, please map the central pixel to black. How can the key values be stored for easily being processed in further steps

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Image Analyst
Image Analyst 2015-12-1
See my blockproc demos, attached. They demonstrate a variety of ways to use blockproc. Feel free to adapt.
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Merlyn Tom
Merlyn Tom 2015-12-1
Thankyou for the blockproc demos. Please give an example of how the central pixel of the block can be accessed and processed when using blockproc.
Image Analyst
Image Analyst 2015-12-1
You'd have to use myFilter in blockproc_demo2. Then in there you have the block as array3x3. So to get the middle pixel (its gray level), you'd do:
middlePixel = array3x3(2,2);
I seriously doubt you'd need to do this unless you're doing something highly specialized. You might be able to just modify some kernel if you're doing regular filtering.

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