how to get a uniform illumination?
4 views (last 30 days)
Show older comments
hello, i am trying to do a face detection based on skin colour and i was trying to make a uniform illumination for the images acquired through the webcam. How can I do this with help of HSV adjustments?
0 Comments
Accepted Answer
Image Analyst
on 16 Feb 2016
Illumination cannot be changed by software. You need things like lamps and diffusers. Simply converting to HSV or LAB color space and making the V or L channel (respectively) a uniform value does not have the same effect. Below is an image where I made the left half have the same Y value (like L or V). You can see the effect. If you would have had a non-uniform illumination, it would not flatten the image. You'd need to do background division for that.
6 Comments
Image Analyst
on 24 Feb 2016
Try to do some noise reduction. For example average video frame together, or use some denoising algorithm.
More Answers (0)
See Also
Categories
Find more on Convert Image Type 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!