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Remove Noise from Image

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Zaheer Abbas
Zaheer Abbas 2017-3-11
评论： Li Sun 2017-10-23
I have this RGB image.
I cropped the image into 4 equal size and then When I convert these images to binary images using im2bw. I get noisy image.
I have applied different filters but none of them worked. Can anyone suggest which filter or pre-processing technique should I use?

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回答（1 个）

Image Analyst
Image Analyst 2017-3-11
Try using a tophat or bottomhat filter, imtophat() or imbothat(). Or else use adapthisteq().
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Li Sun
Li Sun 2017-10-23
to add to what he has said, try to convert your RGB to LAB format, then do it on the L layer, then convert back to RGB. BTW, were you able to get good result without cropping the image?

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