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Questions tagged [image-enhancement]

71 questions
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Does PIL ImageEnhance library supports 16 bit JPG images

I am trying to save and display 16 bit JPG image. but getting error like image has wrong mode . If Supported, then what will be the mode?
Sanjiv
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Automatic Scanned Document Image Enhancement

I'm developing automatic image enhancement based on Microsoft paper Whiteboard scanning and image enhancement in the "White balancing and image enhancement" section they provide the steps for the enhancement: First: they estimate the background of…
Raid Lafi
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Image Enhancement through Wavelet Decomposition

I am trying to use Region based Histogram Equalization on 'Approximation Coefficients' generated from Wavelet Decomposition. Here is the code:- loading image img = cv2.imread("some_image.jpg") discrete wavelet transform - cA Approx Coeff; cD Detail…
Abishek S
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eliminate noise on specific parts of medical image

I'm trying to enhance a microscopic image: I want only to concentrate on inside the circular area of the image and delete all outside cells, as the following image: Any suggestion how I can remove all noise outside the centric circular area…
Nada Ghanem
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Imagemagick or similar for scripted image enhancement

I found the following algorithm to work fairly well for enhancement of various images of whiteboards, etc: duplicate the layer, make sure the top layer is active (gaussian)blur the new layer. You shouldn't be able to read the text anymore. set the…
Parand
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How to undo average filtering in Matlab

If I apply an average filter in Matlab using fspecial function('average', [9 9], for example. What is the best method to try and fix the blur image? The practical side of my question is that if we have the same kind of blur, as with average…
Nikolaos Kwstakiwtis
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What is a good way of Enhancing contrast of color images?

I split color image for 3 channels and made a contrast enhancement of each channel. Then merged them together, I like the image at the result, but it has different colors. Black objects became yellow and so on... EDIT: The algorithm I used is to…
maximus
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Inverse Fourier Transform function gives wrong result

I am implementing a code for image enhancement and to apply Fourier and inverse Fourier transform I am using the code below but in result it gives black image. F = fft2(image); F = fftshift(F); % Center FFT F = abs(F); % Get the magnitude F =…
FatimaAsif
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Image Enhancement using FFT in java

I am working on fingerprint image enhancement with Fast Fourier Transformation. I got the idea from this site. I have implemented the FFT function using 32*32 window, and after that as the referral site suggested, I want to multiply power spectrum…
rachana
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Enhancement on Images stored as pyramids

How an enhancement(or any operation that modifies the image) is applied to an image that is stored in the form of pyramids, Is it first applied to a certain pyramid layer(present zoom level) and then reapplied to a different layer if user zoom in or…
akshay202
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Image Processing - How to Enhance Fine Details and Reduce Noise Simultaneously?

I am working on an image processing project where I need to enhance fine details in images while also reducing noise. The images are captured in low-light conditions and contain important intricate features that are crucial for analysis. However,…
user22290428
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Why can I run KinD code but get wrong results?

l am new to image processing.I ran the code given by the author of KinD(the corresponding paper is Kindling the Darkness--A Practical Low-light Image Enhancer), used the author's pre-trained network, and ran the "evaluate.py" file, and then I got…
math590127
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Pillow ImageEnhance Brightness and Contrast: what is the best order to apply these two filters?

Looking at the Brightness and Contrast classes in ImageEnhance: https://pillow.readthedocs.io/en/stable/reference/ImageEnhance.html The image is in RGB mode, 8 bits per channel. I could apply Brightness first, then Contrast to the same image. Or I…
Florin Andrei
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What is the problem with my code that it makes my resultant image of this particular image as jigsaw puzzles?

I am implementing a conference paper and it was originally in matlab and I translated it into python to process it with opencv using fuzzy contextual contrast enhancement method attached paper here in gdrive for reference. Research Paper Drive link…
Ankit Raj
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Keras data generators for image inpainting using autoencoder

I am trying to train an autoencoder for image inpainting where the input images are the corrupted ones, and the output images are the ground truth. The dataset used is organized as: /Dataset /corrupted img1.jpg img2.jpg …
Abeer
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