Image sensors and optical devices

What is the phenomenon called in which charge overflows from a pixel hit by very bright light and spreads white into surrounding pixels?

  1. AZero crosstalk
  2. BBlooming
  3. CRolling shutter distortion
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Answer: B. Blooming

When light strong enough to exceed a pixel's charge capacity (full-well capacity) hits it, the excess charge flows into neighboring pixels and the bright area spreads in the image. This is called blooming. It is suppressed by an overflow drain that carries the excess charge away.

  • A. There is no phenomenon by that name.
  • B. Correct. It is the spreading of overflowing charge into surrounding pixels.
  • C. Rolling shutter distortion is the skewing of moving subjects caused by row-by-row exposure timing.
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