i use function size(a), 1200*1920*3. what 3 means in this?

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chitresh
chitresh 2013-10-4
评论： Image Analyst 2013-10-4
where a is my image matrix, i got result as 1200*1920*3. what 3 means in this?

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Image Analyst
Image Analyst 2013-10-4
It means there are 3 color channels. If you use only 2 outputs, then the second one is hte number of columns time the number of color channels. See Steve's blog for more info: http://blogs.mathworks.com/steve/2011/03/29/even-more-information-about-the-size-function/
[rows, columns, numberOfColorChannels= = size(rgbImage);

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ES
ES 2013-10-4
three dimensional data. I think you read a 1200X1920 colour image. The 3 rd dimension is R, G, B values. What i mean is data[:,:,1] is R, data[:,:,2] is G, data[:,:,3] is B values.
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Urmila
Urmila 2013-10-4
hello, actually i have the same problem.If you understand the concept,tell me also.Thanks in advance.
Image Analyst
Image Analyst 2013-10-4
Did you read Steve's blog that I posted in my answer? It discusses it at length.

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