Function diff

pub fn diff(
    actual: ImgRef<'_, [u8; 4]>,
    expected: ImgRef<'_, [u8; 4]>,
) -> Difference

Expand description

Compares two RGBA images with a neighborhood-sensitive comparison which counts one pixel worth of displacement as not a difference.

See the crate documentation for more details on the algorithm used.

This function does not have any options for ignoring small color differences; rather, the result can be checked against a Threshold.

Details:

If the images have different sizes, then the result will always be the maximum difference.
Differences in the alpha channel are counted the same as differences in luma; the maximum of luma and alpha is used as the result.

diff