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[Solved] Using ImageTrim with a Disk for Masking

I'm trying to crop the image below using a disk-shaped mask. ImageTrim documentation suggests that using a Disk object for masking is supported. However, when I use the following, it trims the image in a square rather than a disk:

ImageTrim[image, Disk[{375, 375}, 300]]

I appreciate any suggestions on how to crop the image to a circle. image
POSTED BY: John Cromwell
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Thanks so much! This is exactly what I was trying to accomplish. John
POSTED BY: John Cromwell
Rohit Namjoshi
Rohit Namjoshi
Posted 3 years ago

Hi John,

Images are always rectangular. Perhaps what you want is to replace the dark areas around the disk with an alpha channel that will make it transparent. You can use RemoveBackground to do that. Using the image provided

RemoveBackground[img, {Black, .01}]

enter image description here
POSTED BY: Rohit Namjoshi
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