diff --git a/modules/gpu/src/cuda/isf-sc.cu b/modules/gpu/src/cuda/isf-sc.cu
index f36f86f963..a6418c1d31 100644
--- a/modules/gpu/src/cuda/isf-sc.cu
+++ b/modules/gpu/src/cuda/isf-sc.cu
@@ -40,4 +40,15 @@
 //
 //M*/
 
-#include <icf.hpp>
\ No newline at end of file
+#include <icf.hpp>
+
+void icf::Cascade::detect(const cv::gpu::PtrStepSzb& hogluv) const
+{
+    // detection kernel
+}
+
+void icf::ChannelStorage::frame(const cv::gpu::PtrStepSz<uchar4>& image)
+{
+    // color convertin kernel
+    // hog calculation kernel
+}
\ No newline at end of file
diff --git a/modules/gpu/src/icf.hpp b/modules/gpu/src/icf.hpp
index 8cc4395c32..7183fc0ac4 100644
--- a/modules/gpu/src/icf.hpp
+++ b/modules/gpu/src/icf.hpp
@@ -64,6 +64,8 @@ struct Cascade
         const cv::gpu::PtrStepSzf& lvs, const cv::gpu::PtrStepSzb& fts, const cv::gpu::PtrStepSzb& lls)
     : octaves(octs), stages(sts), nodes(nds), leaves(lvs), features(fts), levels(lls) {}
 
+    void detect(const cv::gpu::PtrStepSzb& hogluv) const;
+
     PtrStepSzb octaves;
     PtrStepSzf stages;
     PtrStepSzb nodes;
@@ -81,7 +83,7 @@ struct ChannelStorage
         const cv::gpu::PtrStepSzb& itg, const int s)
     : dmem (buff), shrunk(shr), hogluv(itg), shrinkage(s) {}
 
-    void frame(const cv::gpu::PtrStepSzb& image) {}
+    void frame(const cv::gpu::PtrStepSz<uchar4>& image);
 
     PtrStepSzb dmem;
     PtrStepSzb shrunk;
diff --git a/modules/gpu/src/softcascade.cpp b/modules/gpu/src/softcascade.cpp
index 54f37cd178..80473da95b 100644
--- a/modules/gpu/src/softcascade.cpp
+++ b/modules/gpu/src/softcascade.cpp
@@ -74,7 +74,7 @@ struct cv::gpu::SoftCascade::Filds
     GpuMat features;
     GpuMat levels;
 
-    // preallocated buffer 640x480x10
+    // preallocated buffer 640x480x10 + 640x480
     GpuMat dmem;
     // 160x120x10
     GpuMat shrunk;
@@ -86,9 +86,6 @@ struct cv::gpu::SoftCascade::Filds
     icf::Cascade cascade;
     icf::ChannelStorage storage;
 
-    bool fill(const FileNode &root, const float mins, const float maxs);
-    void detect() const {}
-
     enum { BOOST = 0 };
     enum
     {
@@ -102,6 +99,12 @@ struct cv::gpu::SoftCascade::Filds
         HOG_LUV_BINS       = 10
     };
 
+    bool fill(const FileNode &root, const float mins, const float maxs);
+    void detect() const
+    {
+        cascade.detect(hogluv);
+    }
+
 private:
     void calcLevels(const std::vector<icf::Octave>& octs,
                                                     int frameW, int frameH, int nscales);
@@ -278,7 +281,7 @@ inline bool cv::gpu::SoftCascade::Filds::fill(const FileNode &root, const float
     cascade = icf::Cascade(octaves, stages, nodes, leaves, features, levels);
 
     // allocate buffers
-    dmem.create(FRAME_HEIGHT * HOG_LUV_BINS, FRAME_WIDTH, CV_8UC1);
+    dmem.create(FRAME_HEIGHT * (HOG_LUV_BINS + 1), FRAME_WIDTH, CV_8UC1);
     shrunk.create(FRAME_HEIGHT / shrinkage * HOG_LUV_BINS, FRAME_WIDTH / shrinkage, CV_8UC1);
     hogluv.create( (FRAME_HEIGHT / shrinkage * HOG_LUV_BINS) + 1, (FRAME_WIDTH / shrinkage) + 1, CV_16UC1);
 
@@ -395,7 +398,7 @@ void cv::gpu::SoftCascade::detectMultiScale(const GpuMat& image, const GpuMat& /
                                 GpuMat& /*objects*/, const int /*rejectfactor*/, Stream /*stream*/)
 {
     // only color images are supperted
-    CV_Assert(image.type() == CV_8UC3);
+    CV_Assert(image.type() == CV_8UC4);
 
     // only this window size allowed
     CV_Assert(image.cols == 640 && image.rows == 480);
@@ -406,4 +409,4 @@ void cv::gpu::SoftCascade::detectMultiScale(const GpuMat& image, const GpuMat& /
     flds.detect();
 }
 
-#endif
+#endif
\ No newline at end of file