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P: (Masking) Object masks should be computed on the cropped image

LEGEND ,
Dec 01, 2022 Dec 01, 2022

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Object masks should be computed on the cropped image, not the original image.  Adobe went through a similar learning process with Auto Tone, finally acknowledging that it should be computed on the cropped image:

https://community.adobe.com/t5/lightroom-classic-ideas/lightroom-auto-tone-analysis-should-apply-pos...

 

(But maybe this time it can be corrected in less than five years.)

 

Here's a use case (original image attached).  The original, auto-straightened and cropped image:

johnrellis_0-1669915196327.png

 

Dragging a rectangular Object-mask selection (faintly visible) around the original Polaroid image:

johnrellis_1-1669915341752.png

 

results in a bad mask:

johnrellis_2-1669915423755.png

 

Apparently, the AI algorithm gives more weight to the higher-contrast outer border edges in the cropped-out area of the photo than to the inner border edges within the crop.

 

Exporting the cropped photo and then making the same rectangular Object-mask selection gives perfect results:

johnrellis_3-1669915614492.png

 

 

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