fixed mask calculation in SURF_GPU

diff --git a/modules/gpu/src/cuda/surf.cu b/modules/gpu/src/cuda/surf.cu
index dbd29ef0fc7e90caf9e403e5f779c76fa06c1729..b9f6da957041bd01e6bc63c1898bf6b30235b775 100644 (file)
--- a/modules/gpu/src/cuda/surf.cu
+++ b/modules/gpu/src/cuda/surf.cu
@@ -218,10 +218,10 @@ namespace cv { namespace gpu { namespace surf
                        int dy2 = __float2int_rn(ratio * c_DM[3]);\r
 \r
                        real_t t = 0;\r
-                       t += tex2D(sumTex, sum_j + dx1, sum_i + dy1);\r
-                       t -= tex2D(sumTex, sum_j + dx1, sum_i + dy2);\r
-                       t -= tex2D(sumTex, sum_j + dx2, sum_i + dy1);\r
-                       t += tex2D(sumTex, sum_j + dx2, sum_i + dy2);\r
+                       t += tex2D(maskSumTex, sum_j + dx1, sum_i + dy1);\r
+                       t -= tex2D(maskSumTex, sum_j + dx1, sum_i + dy2);\r
+                       t -= tex2D(maskSumTex, sum_j + dx2, sum_i + dy1);\r
+                       t += tex2D(maskSumTex, sum_j + dx2, sum_i + dy2);\r
 \r
                        d += t * c_DM[4] / ((dx2 - dx1) * (dy2 - dy1));\r
 \r