Relocating pixels after resizing the image

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ImageProcNaive
ImageProcNaive 2016-9-12
评论： ImageProcNaive 2016-9-12
I am marking some pixels in a low-res version of an image, which is smaller than the original image. Now I want to extract info from the original image using those markers. But no idea how to locate those marker/pixels in the bigger image. Help!

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回答（1 个）

Image Analyst
Image Analyst 2016-9-12
What is the "low res version"? Is it simply a small version of your huge image but just being displayed in a small axes on your figure? And how are you "marking some pixels"? If you're using ginput(), then the same (x,y) will work on your full sized image - there is nothing you need to do other than rounding x,y to the nearest integers so that you have integer rows and columns.
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ImageProcNaive
ImageProcNaive 2016-9-12
I had used the resize function to generate a smaller version of the image, which I referred as the low res version. I used "get(axesHandle,'CurrentPoint')" to obtain the location of the mouse button clicks from the low res image. I have stored the locations of these clicks which I referred as markers. Please let me know if you still have any confusion. Thanks in advance.

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