How to convert video into Frames

2014 2 12
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更新时间：2014 2 25
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0 个投票

Hi sir
I'm doing a project on histogram equalization of videos for that i need to convert videos into images(Frames) so that i can apply histogram techniques on images and again i convert back into video of avi format.
please help me sir i am using matlab version R2010a
Thankyou...

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Image Analyst
Image Analyst 2014-2-18
That could give a very odd looking video. At the very least you'd want to do it only on the L or V channel, not on R, G, and B separately.
vijay chander
vijay chander 2014-2-24
编辑：vijay chander 2014-2-25
Thanks but the problem i'm facing is i cant able to read vido into matlab im getting the error saying that the following codec is missing on ur computer h 264 i cant understand whats this i cant able to figure it out im running out of time please help me about this Thank you

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 采纳的回答

David Young
David Young 2014-2-12

0 个投票

Is it possible for you to upgrade to version 2010b or later? If so, you could use VideoReader.
vreader = VideoReader(vidfile);
frames = 1:vreader.NumberOfFrames;
for f = frames
try
im = vreader.read(f);
catch err
<error processing>
end
<image processing>
end

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vijay chander
vijay chander 2014-2-18
thanks David for giving me solution i upgraded for 2011 a version but i m facing some errors
Error in ==> VideoReader.VideoReader>VideoReader.init at 423 obj.VideoReaderImpl = audiovideo.mmreader(fullName);
Error in ==> VideoReader.VideoReader>VideoReader.VideoReader at 133 obj.init(fileName);
David Young
David Young 2014-2-18
Is that the whole error message? It's surprisingly uninformative. Are other programs able to read your file? If they can, I guess you might need to contact MathWorks support for advice.
vijay chander
vijay chander 2014-2-20
no its saying that some codecs are missing in ur computer
David Young
David Young 2014-2-21
I think MathWorks support is the best bet then. You might be able to work out how to download the missing codecs, but I can't really help with that, sorry.
David Young
David Young 2014-2-21
I think MathWorks support is the best bet then. You might be able to work out how to download the missing codecs, but I can't really help with that, sorry.

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更多回答（1 个）

Urmila
Urmila 2014-2-12

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you can use mmreader(filemame) function. see matlab documentation on mmreader function.

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vijay chander
vijay chander 2014-2-12
im getting this error
>> mmreader('C:\vijay\Wildlife.avi')'; ??? Undefined function or method 'mmreader' for input arguments of type 'char'.

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