function to increase the quality of image

Hi there,

do you know any function to increase the quality of images? (like increase the clarity)

Answer 1

[Prakhar Jain]

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.

[narges]

thanks a lot