How to crop or chop the images at the L shaped corner edges with imagemagick

Question

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I use imagemagick -6 for conversion. I have an image like above. Actual image resides in the rectangular area. I need to remove the L shaped corner edges as you see. I tried with lots of options available in : https://imagemagick.org/Usage/crop/#splice . As crop/chop and shave options applicable symmetrical to both sides. I was thinking If I can just splice the un-wanted L shaped areas. I tried with convert -background blue -gravity East -splice 10x10 +repage but of no luck. It basically adds a cross in horizontal and vertical in the middle of the image. Please advise if it possible just to erase/chop a particular area. e.g. some portion of an edge and not the complete edge. The reason here is I don't want to chop-off any part of rectangular shape but the L shapes above and below. Basically looking for removing/splicing with white color just L shaped one corner at a time if possible using Imagemagick-6. As I don't know about the pixel size in advance. I don't know if one liner solution will work. Many thanks!

Answer 1

I think you mean this:

magick image.png -crop 305x365+232+58 result.png