Guass Kernel normalization

[galois-c]

The sum of Gaussian kernel is 159, so it should divide 159 instead of 256 in line 57, right?

hdr-plus/src/util.cpp

Line 49 in d2b56c2

 k(-2,-2) = 2; k(-1,-2) =  4; k(0,-2) =  5; k(1,-2) =  4; k(2,-2) = 2; 

[Tim Brooks]

Hi Fenglele,

Nice catch! Could you make a pull request to fix this? Should be a very easy fix, and I would be happy to review and accept it.

[galois-c]

Sure. Already done!