Search found 5 matches

by awinhold
2020-01-22T19:13:07-07:00
Forum: Users
Topic: Crop Image Based on Edge Detection
Replies: 9
Views: 2249

Re: Crop Image Based on Edge Detection

Yes it's an interesting feature (the almost dark image). It is a picture of a light box, covered with canvas, except for a rectangle cut out in the middle (the white rectangle you vaguely see). I'm imaging in Canon RAW (.CRW) which some how returns this very dark image. I think it has to do with the...
by awinhold
2020-01-22T08:57:05-07:00
Forum: Users
Topic: Crop Image Based on Edge Detection
Replies: 9
Views: 2249

Re: Crop Image Based on Edge Detection

fmw42, A few of them are going to look very dark and is expected. There should be two that do not look dark though. The edge outline (black outline on white background) and the trim2detail result which should have a white rectangle with a black border and yellow crop outline (from gimp). If you're s...
by awinhold
2020-01-21T21:11:55-07:00
Forum: Users
Topic: Crop Image Based on Edge Detection
Replies: 9
Views: 2249

Re: Crop Image Based on Edge Detection

snibgo: Ok, I've tried to host them on Imgur: Original image: The rectangular light source taken at 1/250 sec shutter speed with Canon D60 (no 60D). Was CRW originally but converted to png in python. Link: https://imgur.com/oRrsMsH Edge Detection Result: using the code I originally posted I get what...
by awinhold
2020-01-21T20:19:01-07:00
Forum: Users
Topic: Crop Image Based on Edge Detection
Replies: 9
Views: 2249

Re: Crop Image Based on Edge Detection

Thanks, folks. It doesn't look like I have the ability to post images here, yet, and I don't have a public location to place them :/ I am running: Windows 10 Version: ImageMagick 6.9.10-11 Q16 x86_64 2018-09-08 https://www.imagemagick.org on Cygwin. If you have an edge image that shows the rough rec...
by awinhold
2020-01-21T16:10:40-07:00
Forum: Users
Topic: Crop Image Based on Edge Detection
Replies: 9
Views: 2249

Crop Image Based on Edge Detection

Hi Folks, I have a set of images I've taken where I placed a canvas sheet over a white lightbox. The sheet has a rectagle cut out of it and I image the light coming through this cutout to use for some image correction and pixel saturation work. I need to detect the illuminated rectangle region, crop...