2nd ORDER STATISTICS

256

256

256 x 256 2D matrix array

where entries are

co-occurrence values

Since only pixel elements over short distances are correlated (Di,Dj) is typically

small [e.g., (1,0), (0,1), (1,1) ]

Since for 256 grey values the 2D matrix is typically sparse, co-occurences are

typically taken over 8 grey value ranges and less (e.g., for 256 grey values they are

grouped into 8 grey value bins or less)

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