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Questions tagged [image-enhancement]

71 questions
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IsADirectoryError: [Errno 21] Is a directory: '/'

I am trying to use Images stored inside the directory by using this code, import random path = "/content/drive/MyDrive/Colab Notebooks/Low Images/*.png" low_light_images = glob(path) for image_path in random.choice(low_light_images): …
micro
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Doing Contrast Enhancement Using A Map

So I've had a go at different way of manipulating the current image. I have the following image and subsequent mask for the image: Recently I have been pointed to a method such as contrast enhancement of an image. I have looked potential ways to…
Nhyi
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How to use ffmpeg to convert VCD(dat file) to a batch of images, then convert these images into another video?

I have a old VCD, and I want to enhance it using AI tech. my questions are: how to know the origin frame rate of this VCD(dat file)? how to split this VCD into images with the raw frame rate? ( I don't want to miss one frame ) does google has the…
Siwei
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How to improve the constrastness of unclear image by opencv?

I am working on a OCR project, but some images are obscure to recognize. I have tried some image enhancement solution but do not find a good one. Is there any suggestion to enhance the following image? thanks in advance.
xueliang liu
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Retinex implementation python

I am not really new to python programming, but I am just confused about implementing fundamental retinex (Single Scale Retinex). I know the Retinex formula : retinex = logI(x,y) - (log(F(x,y)) * I(x,y)) and here is my code: def…
anthonius adi
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Histogram Matching result is not similar with inputs

I'm trying to do histogram matching on two matrixes.But result is not similar with input matrixes.I think it must similar with histogram of "log_ort_esitlenmis". %Image enhancement'ta butun imge icin sag…
cinargursoy
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Highlight reduction in images

I am trying to reduce the highlights in an image caused by a high intensity light source. I tried various softwares and I found that "Highlight Reduction" works for me. But I am not able to understand the actual processing behind a Highlight…
pr22
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Fuzzy Image Enhancement

I need to implement an algorithm that makes Fuzzy Image Enhancement but I can't find any implementations to start with. Could you point me to some (googled with no success).
Todor Tsonkov
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Enhancing the given image

I have an image i need to enhance. I can use the techniques such as, power law transformation, piecewise linear transformation, smoothing filters on spatial and frequency domain, noise filters. I can also process a selected region of the image. The…
Kasun Athukorala
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How do i smoothen the edges of a multicomponent image?

I have an image in which i would like to smoothen its edges. There was a bit of a challenge in getting a more accurate segmentation. I however got a solution by adapting the suggestion from: What can I do to enhance my image quality?. The original…
User2201
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Apply the active MSR filters on camera frame

I use OpenCV for detect eyes in my project and I intend to use Catalano library for use MultiScaleRetinex(for illumination enhancement) but there is problem when I passed camera frame to library, the library just accepted bitmap parameters and I…
A.Daraei
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Negative value for PSNR after image enhancment in MATLAB

I have done this so far. After image enhancement in frequency domain for assessment, I have calculated PSNR. The value of PSNR and SNR is negative. Further, the class of input and output image is double. ref =…
Mohammad
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What is the best approach to enhance blacked out areas to make the text inside them readable.?

I am trying to enhance old hand drawn maps which were digitized by scanning and this process has caused some blacked out areas in the image making the text inside them very hard to read. I tried adaptive histogram equalization and couple of other…
PythonLearner
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Thresholding an RGB image

We have an RGB image. I want to apply adaptive thresholding on it. How can we find the threshold value??? I think we can separately find the threshold value of each channel but what next is the confusion?? or if you can provide some better solution…
Navdeep
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OpenCV 3.0 which parameters in DepthCleaner function?

I am working on enhancing Kinect's depth image using the DepthCleaner function of OpenCV 3.0. I am using the following codes to use this function. char fileName[64]; Mat depth_image = Mat(480, 640, CV_16UC1); Mat output = Mat(480, 640,…
Tariq
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