Is there a a function/code which can make the darker bits darker and the lighter bits lighter?
3 views (last 30 days)
Show older comments
just a random image I found on google. Is it possible to make the black parts (crack) darker and the background (concrete) lighter?
0 Comments
Answers (3)
Matz Johansson Bergström
on 21 Aug 2014
If you have the image processing toolbox you can use imcontrast. http://www.mathworks.se/help/images/ref/imcontrast.html
0 Comments
Iain
on 21 Aug 2014
Yup.
Calculate the difference from the image's mid level (128 probably, but this depends on how you're dealing with the image), and multiply it by a number greater than 1. Add that difference back to the mid level.
2 Comments
Iain
on 22 Aug 2014
Adjusted_Contrast = (Image - meanlevel) * scale;
Adjusted_Image = meanlevel + Adjusted_Contrast;
You need to change data types & values of mean level & scale, as you need.
Image Analyst
on 22 Aug 2014
You can use imadjust() or just pass in the range you want to see into imshow().
0 Comments
See Also
Categories
Find more on Display Image in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!