fixed compilation

modules/gpuimgproc/src/cuda/generalized_hough.cu

@@ -48,6 +48,7 @@
 #include "opencv2/core/cuda/common.hpp"
 #include "opencv2/core/cuda/emulation.hpp"
 #include "opencv2/core/cuda/vec_math.hpp"
+#include "opencv2/core/cuda/functional.hpp"
 
 #include "opencv2/opencv_modules.hpp"
 
@@ -183,7 +184,7 @@ namespace cv { namespace gpu { namespace cudev
 
             const int ind = ::atomicAdd(r_sizes + n, 1);
             if (ind < maxSize)
-                r_table(n, ind) = p - templCenter;
+                r_table(n, ind) = saturate_cast<short2>(p - templCenter);
         }
 
         void buildRTable_gpu(const unsigned int* coordList, const float* thetaList, int pointsCount,
@@ -227,7 +228,7 @@ namespace cv { namespace gpu { namespace cudev
 
             for (int j = 0; j < r_row_size; ++j)
             {
-                short2 c = p - r_row[j];
+                short2 c = saturate_cast<short2>(p - r_row[j]);
 
                 c.x = __float2int_rn(c.x * idp);
                 c.y = __float2int_rn(c.y * idp);

samples/gpu/cascadeclassifier.cpp

@@ -51,7 +51,7 @@ static void convertAndResize(const GpuMat& src, GpuMat& gray, GpuMat& resized, d
 {
     if (src.channels() == 3)
     {
-        gpu::cvtColor( src, gray, COLOR_BGR2GRAY );
+        cv::gpu::cvtColor( src, gray, COLOR_BGR2GRAY );
     }
     else
     {
@@ -62,7 +62,7 @@ static void convertAndResize(const GpuMat& src, GpuMat& gray, GpuMat& resized, d
 
     if (scale != 1)
     {
-        gpu::resize(gray, resized, sz);
+        cv::gpu::resize(gray, resized, sz);
     }
     else
     {