Image-processing Questions

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Find the exact edges of a shape

I would like to calculate the area of a shape in an image produced from infra red cameras. i have a large set of matrices which i produce
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Occurrence of list in ndarray

I have an rgb image -ndarray- and i want to count the occurrence of some colors like [255,0,0] or [0,0,255] in this image. example of
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cv2 imread returns None

I installed the cv2 library via pip install opencv-contrib-python-headless. whenever i try to read an image it it returns none. i tried

Opencv vs Opengl for image filters

I'm a complete beginner in image processing thing so please do excuse me if my question is foolish .basically i'm trying to develope an image
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Rawpy raw image pattern

I'm trying to read and demosaic raw images in python using the rawpy module. unfortunately the module does not provide simple demosaic method, but
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Image Block Processing

I have a large image, and i want to process it block by block (512 x 512) at a time. i am currently doing this with loops, but i know that it is
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