DiffResult

The comparison as a picture — every mismatched (or out-of-bounds) pixel solid red, the rest as rendered — built on first read and not before.

The largest single-channel difference among the mismatched pixels; 255 for a size change.

Mismatched pixels with a channel past the floor's delta (DEFAULT_FLOOR_CHANNEL_DELTA unless ImageDiffer.diff was told otherwise), out-of-bounds ones included. matches never lets the pixel floor absorb one of these.

True when the share of mismatched pixels is within tolerancePercent, or when there are at most minMismatchedPixels of them and none is pronounced — the floor is for faint residue, not for a few pixels that changed outright.