improvements in Haar CascadeClassifier: 1) use CV_32S instead of CV_32F for the integral of squares (which is more accurate and more efficient); 2) skip the window if its contrast is too low

2015-05-28 19:33:21 +03:00
parent 036c438904
commit 5a94a95fbf
3 changed files with 23 additions and 15 deletions
@@ -160,7 +160,7 @@ void runHaarClassifier(
                __global const int* psum = psum1;
                #endif

-                __global const float* psqsum = (__global const float*)(psum1 + sqofs);
+                __global const int* psqsum = (__global const int*)(psum1 + sqofs);
                float sval = (psum[nofs.x] - psum[nofs.y] - psum[nofs.z] + psum[nofs.w])*invarea;
                float sqval = (psqsum[nofs0.x] - psqsum[nofs0.y] - psqsum[nofs0.z] + psqsum[nofs0.w])*invarea;
                float nf = (float)normarea * sqrt(max(sqval - sval * sval, 0.f));