function to increase the quality of image

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narges
narges le 27 Sep 2018
Modifié(e) : narges le 25 Jan 2020
Hi there,
do you know any function to increase the quality of images? (like increase the clarity)

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Prakhar Jain
Prakhar Jain le 1 Oct 2018
Hi Narges,
You can try the following things to improve the quality of image and then identify text in the same.
Pre-processing steps for improving image quality: 1) Contrast Enhancement 2) Binarize the image 3) Remove noise
After you follow above steps, you can use the MATLAB MSER Algorithm – Maximally Stable Extremal Regions (based on paper by Neumann et al) to extract the local boxes of possible text in an image.
Follow the link for detecting text in natural images.

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