How to use masking filter to remove particular frequency from an image?
2 次查看(过去 30 天)
显示 更早的评论
I have modified the code of ImageAnalyst for one the tasks that I am currently working on. Goal is to extract the QR code from the image. Previously I extracted the QR code by using a notch filter but it is highly sensitive to distortion and doesnt work as soon as image is no more in-plane.
Attached is the code based on masked filter (originally written by Image Analyst) and the image I am working on. But once I have removed the frequencies, it it gives me a noisy output like salt and pepper noise.
Looking forward to constructive feedback on the query.
4 个评论
Guillaume
2018-10-21
Isn't the QR code encoded by the connections between the dots? If so, why do you care about removing some frequencies from the image?
回答(0 个)
另请参阅
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!