w3c / PNG-spec

Maintenance of the PNG specification
https://w3c.github.io/PNG-spec/
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better but still short luminance definition, fixes #406 #412

Closed svgeesus closed 5 months ago

svgeesus commented 5 months ago

Better than the original definition (which was factually incorrect) while still pointing out the most important factor (it applies to visible wavelengths only and is weighted for human photopic vision; yellow green will have higher luminance that reds or blue-violets).

Trying to strike a balance between being correct, and being overwhelming with an over-long definition.