using integrated webcam of laptop for image processing in matlab

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SAPANA NIKHADE
SAPANA NIKHADE 2011-6-7
评论： Trong Nguyen Thanh 2017-6-25
hello i m writing prog for removing salt n pepper noise from digital image, i want to capture image by integrated web cam of my lappy n use directly in matlab program of image processing to remove salt n pepper noise. plz help.
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Trong Nguyen Thanh
Trong Nguyen Thanh 2017-6-25
Answer: https://www.mathworks.com/help/supportpkg/usbwebcams/ug/acquire-images-from-webcams.html
Video: https://www.youtube.com/watch?v=Ekl21W7by_k

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采纳的回答

Image Analyst
Image Analyst 2011-6-7
Do you have the Image Acquisition Toolbox? When you get that, just run imaqtool, click on your webcam in the hardware browser, and do stuff (live preview, etc.) and see what commands it executes. Then just copy and paste those commands into your own m-file.
Salt and pepper noise can be eliminated by taking a median filter, subtracting it from the original (make sure you cast the original image to floating point first), taking the absolute value, thresholding to get a "map" of where the noise is, then use this map as logical indexing to replace the bad/noisy pixels in the original with the median filtered version. It's literally about 3 lines, doing just what I said. Write back if you have trouble with it.
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Kumar Saurabh
Kumar Saurabh 2011-8-15
hello yes i have the image acquisation toolbox.i know how to use imaqtool also.but i am not able to understand how to change settings in the hardware browser and do stuff like live preview etc.plz help me.

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更多回答（2 个）

Kok Hong
Kok Hong 2011-9-6
hi, can i know what do u mean see what commands it executes? where to see it?? thx in advance.
Bastian
Bastian 2011-9-7
@ Image Analyst: What to do with the "noise map", it's boolean? Waht do you mean with logical index and how to remove the nosiy pixels? Multiply it with the median filtered one? Thanks

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