ImageChannels

gives the number of channels present in the data for the Image or Image3D object image.

gives the number of channels present in frames of a video.

Details

An image can be constructed from color channels or components such as red, green, blue in the RGB space. Each channel is an array of pixel values.

		g	1-channel image in grayscale
		{g,α}	2-channel grayscale with alpha
		{r,g,b}	3-channel RGB image
		{r,g,b,α}	4-channel RGB with alpha
		{c,m,y,k}	4-channel CMYK image
		{c,m,y,k,α}	5-channel CMYK with alpha

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This gives the number of channels present in an RGB image:

Channels in a grayscale image:

Channels in an RGBA image:

Channels in a CMYK image:

A 9-channel random image:

Channels of a video:

Channels in a 3D RGB image:

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