function to increase the quality of image

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narges
narges 2018-9-27
编辑： narges 2020-1-25
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 2018-10-1
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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