Search found 4 matches

by prohtex
2017-02-03T13:52:10-07:00
Forum: Users
Topic: Layer image A over image B using grayscale mask from image C
Replies: 1
Views: 1956

Layer image A over image B using grayscale mask from image C

I'm trying to perform a masking operation. I'd like to layer image A, which is a jpg, over image B, also a jpg, applying first an opacity mask in the form of a greyscale tif file to image A. I'm also rotating and scaling the mask as I load it. I'm able to create a png with transparency using this ...
by prohtex
2017-02-03T08:12:42-07:00
Forum: Users
Topic: Use hough-lines to detect scanned book pages
Replies: 4
Views: 5123

Re: Use hough-lines to detect scanned book pages

@snibgo Thanks for this information - very helpful! When you say "The two sides of this line will be of contrasting intensity", how would I check that? Crop the image to the coordinates of that line? @fmw42 That's an excellent idea, thanks! I didn't know it was possible to output to txt file. My ...
by prohtex
2017-02-01T13:02:07-07:00
Forum: Users
Topic: Use hough-lines to detect scanned book pages
Replies: 4
Views: 5123

Use hough-lines to detect scanned book pages

Hello forum, I'm working on a series of scripts for postprocessing scanned images. I've made use of a lot of Imagemagick functionality so far and the tips in this forum have been invaluable. One area where I'm stuck is identifying the edges of the scanned pages in the images for further cropping. My ...
by prohtex
2016-12-20T11:46:44-07:00
Forum: Users
Topic: Cropping a CR2 file using the XMP profile
Replies: 4
Views: 7137

Re: Cropping a CR2 file using the XMP profile

Hi aporthog, any chance you might be willing to share this script or the logic you used to convert the XMP crop values to IM crop area? Thanks!