Image statistics

The image is characterised by a probability density function (PDF). The PDF f describes the probability of the occurrence of a discrete grey level q in the range of grey levels Q. 

latex error! exitcode was 2 (signal 0), transscript follows:

Example

landsat_b80.png

The following code calculates the PDF pdf for a byte image in the intervall [0,255] 

latex error! exitcode was 2 (signal 0), transscript follows:



   1 h=histogram(img,bins=256,range=[0,255],normed=True)
   2 pdf,x=h[0],h[1]