Legacy ImageMagick Discussions Archive

Thanks for all the examples and explanations. I believe after reading your post and looking through the examples, it makes sense why they refer to laplacian to sometimes as "sharpening" and other times as "smoothing". Cause they are technically the same operation, but one uses the negative of ...

I read few articles that Laplacian (second derivative in x + second derivative in y) is used to actually sharpen the images. Because when you apply a Laplacian kernel on an image, it essentially marks its intensities, and (after some rescinding), if you add the result of the filter to the original ...

Hi,
If I have a camera sitting in a dark area, is there anyway that I can get better (less noisy) images?
Let's say that I have a surveillance camera capturing frames at night in a parking lot, how can I get rid of some of the noises?

Thanks,
--Rudy