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Tag: image-processing

Luminance Correction (Prospective Correction)

When I was searching internet for an algorithm to correct luminance I came across this article about prospective correction and retrospective correction. I’m mostly interested in the prospective correction. Basically we take pictures of the scene with image in it(original one), and two other ,one bright and one dark, pictures where we only see the background of the original picture.

Python numba returned data types when calculating MSE

I am using numba to calculate MSE. The input are images which are ready as numpy arrays of uint8. Each element is 0-255. When calculating the squared difference between two images the python function returns (expectedly) a uint8 result, but the same function when using numba returns int64. What’s unclear to me is why the python-only code preserves the data-type