Problems using SSIM for image quality comparisons
Variation among SSIM implementations make comparing results a mess. This version matches the output of the original, unlike most of those in common use as of 2023.
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Accurate color conversions
This is a quick note for converting byte values colors in 0-255 back and forth to floating-point colors in 0-1 which avoids common errors.
Read more →A better quadratic formula algorithm
A robust algorithm for computing roots of quadratic equations, much better than common code.
Read more →Chris Lomont's lines of code over time
Over decades I’ve written a lot of personal code. I made a bar chart race showing how many lines I’ve written in different languages over time.
Read more →Generating Uniform Random Numbers on [0,1]
How does one generate uniform random numbers in [0,1] using IEEE 754 floating point formats? It’s tricky.
Read more →Efficient divisibility testing
Here’s bit tricks for efficient divisibility testing.
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