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ml-recall

#luma

2 questions from Computer Vision Basics

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2 questions · 2 min · score and explanations at the end

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Question 1: Short answer

easyAI-checkedComputer Vision Basics

Converting an 8-bit image to gray by averaging the channels, (R+G+B)/3(R + G + B)/3, maps both a pure green pixel (R,G,B)=(0,200,0)(R, G, B) = (0, 200, 0) and a pure blue pixel (0,0,200)(0, 0, 200) to 200/3≈66.7200/3 \approx 66.7. With the Rec. 601 luma formula Y′=0.299R+0.587G+0.114BY' = 0.299R + 0.587G + 0.114B instead, the green pixel becomes and the blue pixel becomes .

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