What Is the third value when reading an image

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Harel Harel Shattenstein
回答： Image Analyst 2018-11-13
When using imread() we get a matrix of the size [r,c,x] what does x stand for?

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回答（2 个）

madhan ravi
madhan ravi 2018-11-13
Image Analyst
Image Analyst 2018-11-13
When used with an image, the third output of the size() function represents how many color channels there are: 1 for a gray scale image and 3 for an RGB image. There are some watchouts if you only accept two size() outputs and you actually really have an RGB image and not a gray scale image. See the link below.
See Steve's blog discussion about this: Too much information about the size function.

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