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Error using "imhist" in MATLAB 2014

I am trying to use imhist to display histogram uint8.jpg, however I am getting this error:

Error when using imhist Expected input number 1, i or X, which will be two dimensional.

Error in imhist> parse_inputs (line 278) validateattributes (a, {'Twice', 'uint8', 'int8', 'logical', 'uint16', 'int16', 'single', 'uint32', 'int32'} , ...

Error in imhist (line 60) [a, n, isScaled, top, map] = parse_inputs (varargin {:});

Here is my image information:

whos f Name Size Bytes Class
Attributes

f 2988x5312x3 47616768 uint8

Do I need to convert the image to another data class? I would appreciate any help on this.

Thank!

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1 answer


The reason for the error is that your RGB image and imhist can't handle it. To get around this, you can use a single pipe:

imhist(YourImage(:,:,Channel));

or convert from RGB to grayscale:



imhist(rgb2gray(YourImage));

This should work fine now.

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