How to calculate intensity statistical features of gray scale images in MATLAB?

Please help me how to calculate first order intensity statistics features of gray scale images in MATLAB Thanks

Answer 1

[Image Analyst]

Try these:

meanGrayLevel = mean2(grayImage)
stdDev = std2(grayImage)
v = var(grayImage(:))

[Javaid Iqbal]

Thanks sir but my interest was to calculate all important statistical features by using like haralick function. Thanks

[Image Analyst]

Not sure how anyone would have known that until now, but anyway, use graycomatrix() and graycoprops().