Bitwise Image Operations

Updated 02 Oct 2026

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What it is
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  applies boolean operations to the bits representing each image sample
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Operations
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  NOT flips every bit.
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  AND retains bits set in both operands.
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  XOR sets bits that differ between operands.
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Example
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  $170=10101010_2$ and $204=11001100_2$ .
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  their AND is $136$ ; their XOR is $102$ .
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  for unsigned 8-bit samples, NOT is equivalent to $255-f$ .
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Distinctions
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  bitwise AND is not arithmetic multiplication or alpha blending.
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  a mask containing $0$ and $255$ can suppress or retain corresponding samples; arbitrary grayscale values modify individual bits.
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Project
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  the second image is resized when dimensions differ.
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  equal dimensions do not guarantee meaningful alignment.
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Related
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  Unavailable reference
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  Image Resizing

Linked references 3