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Questions tagged [image-enhancement]

71 questions
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OpenCV 3.0 RGBD DepthCleaner

I am having some difficulties to use the function DepthCleaner () with method = DEPTH_CLEANER_NIL to clean a depth image. This function is released in OpenCV 3.0.0. So, it's too early to find useful documentation for this function. If anyone of you…
Tariq
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Alternative to `adapthisteq`, this functions is really slow

Does anyone have a faster alternative to adapthisteq function in Matlab. My frame rate goes from 40 fps to 19fps after processing the image of the frame with this function. Any help? I'm using mexopencv by the way.
SamuelNLP
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Enhancing details of an image

I have a C# app and I am using Emgu. I want to brighten up dull images. When I use EqualHist the detail is there but a bit too strong. Are there ways to enhance the existing details of an image but not as vibrant as the EqualHist? Thanks.. Sample…
Andrew Simpson
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Image Enhancement using combination between SVD and Wavelet Transform

My objective is to handle illumination and expression variations on an image. So I tried to implement a MATLAB code in order to work with only the important information within the image. In other words, to work with only the "USEFUL" information on…
Ana-Maria Tannous
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measure noise level of an image after apply gaussian filter

i currently working on image enhancement of the endoscopic gastritis images. first step that i do is apply gaussian filter to the images. I had apply different size kernel. But i don't know how to measure is the enhanced image had been improved or…
user2545866
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Greyish Image In Image Sharpening Using Laplacian Filter

I am new at Image Processing. Now, I am studying on Laplacian Sharpening Methods. But there is a thing that I could not understand. I hope you can help me. As you all know, sharpened images occur when we add laplacian filtered image to original…
user1907578
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Can't save images using python ImageEnhance module

I am a new python programmer and I am trying to use the ImageEnhance module to create a set of images that increase sharpness over time. The script below works with one problem: the new images are being save to a temporary directory that quickly…
captaindogface
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How to identify numbers in low quality image using OpenCV?

I need to convert the first image to the second image using python help with OpenCV. Please help me to do that! Sample Input Sample Output
Pasindu Weerasinghe
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CSI style zoom in and enhance now possible?

I have always thought the way they zoom in and enhance on TV and movies was strictly impossible. Essentially because you cannot create more information that there is to begin with. There were ways to get better looking or clearer images like with…
Dawson Gray
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python code of underwater fusion techniques

I am writing python code for underwater image fusion enhancement algorithm(2012 paper and 2018 paper). i am not understanding logic of weight maps and pyramids present in the paper . so if anyone know please tell me.
Kushal B
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