MATLAB: Building types of histograms

types of histogram

I want to create different type of histograms,like texture histogram,gradient magnitude orientation histogram,is there any function to build them in matlab

Best Answer

No, there is just hist() and histc() . You have to calculate the data to pass to hist() or histc() . That will not be easy for textures.

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MATLAB: For texture classification i have taken lbp as a feature..after applying lbp i have taken histogram..how to normalise the bins of histogram..and what is meant by normalise bins of histogram

Normalization would mean that you either divide by the max value of the counts, or that you divide by the sum of all the counts.

[pixelCounts grayLevels] = imhist(lbpImage, 256);
normalizedHist1 = pixelCounts / max(pixelCounts(:));
normalizedHist2 = pixelCounts / sum(pixelCounts(:));

It means that either the max value of any count will be 1.0, or that the sum of all counts would now be 1.0, depending on which method you use.

MATLAB: Histogram

Because your variable "array1" is of type int16, so is variable "LL." The hist() function doesn't seem to be able to manage type int16 input. (That's why you get the error.) You could try

>> hist(double(LL))

to get the histogram.

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Related Solutions

MATLAB: For texture classification i have taken lbp as a feature..after applying lbp i have taken histogram..how to normalise the bins of histogram..and what is meant by normalise bins of histogram

MATLAB: Histogram

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