diff --git a/modules/gpu/src/cuda/isf-sc.cu b/modules/gpu/src/cuda/isf-sc.cu
index 3d3536683..a4496bf67 100644
--- a/modules/gpu/src/cuda/isf-sc.cu
+++ b/modules/gpu/src/cuda/isf-sc.cu
@@ -181,6 +181,7 @@ __device void CascadeInvoker<Policy>::detect(Detection* objects, const uint ndet
     int st = level.octave * level.step;
     const int stEnd = st + level.step;
 
+    const int hogluvStep = gridDim.y * Policy::STA_Y;
     float confidence = 0.f;
     for(; st < stEnd; st += Policy::WARP)
     {
@@ -189,13 +190,13 @@ __device void CascadeInvoker<Policy>::detect(Detection* objects, const uint ndet
         Node node = nodes[nId];
 
         float threshold = rescale<isUp>(level, node);
-        int sum = get<isUp>(x, y + (node.threshold >> 28) * 120, node.rect);
+        int sum = get<isUp>(x, y + (node.threshold >> 28) * hogluvStep, node.rect);
 
         int next = 1 + (int)(sum >= threshold);
 
         node = nodes[nId + next];
         threshold = rescale<isUp>(level, node);
-        sum = get<isUp>(x, y + (node.threshold >> 28) * 120, node.rect);
+        sum = get<isUp>(x, y + (node.threshold >> 28) * hogluvStep, node.rect);
 
         const int lShift = (next - 1) * 2 + (int)(sum >= threshold);
         float impact = leaves[(st + threadIdx.x) * 4 + lShift];
diff --git a/modules/gpu/src/icf.hpp b/modules/gpu/src/icf.hpp
index 2bbbb64d2..454ac30da 100644
--- a/modules/gpu/src/icf.hpp
+++ b/modules/gpu/src/icf.hpp
@@ -130,7 +130,7 @@ struct CascadeInvoker
 {
     CascadeInvoker(): levels(0), stages(0), nodes(0), leaves(0), scales(0) {}
 
-    CascadeInvoker(const PtrStepSzb& _levels, const PtrStepSzb& _octaves, const PtrStepSzf& _stages,
+    CascadeInvoker(const PtrStepSzb& _levels, const PtrStepSzf& _stages,
                    const PtrStepSzb& _nodes,  const PtrStepSzf& _leaves)
     : levels((const Level*)_levels.ptr()),
       stages((const float*)_stages.ptr()),
diff --git a/modules/gpu/src/softcascade.cpp b/modules/gpu/src/softcascade.cpp
index 5da3abf53..038654225 100644
--- a/modules/gpu/src/softcascade.cpp
+++ b/modules/gpu/src/softcascade.cpp
@@ -316,7 +316,7 @@ struct cv::gpu::SCascade::Fields
         cudaMemset(count.data, 0, sizeof(Detection));
         cudaSafeCall( cudaGetLastError());
         device::icf::CascadeInvoker<device::icf::GK107PolicyX4> invoker
-        = device::icf::CascadeInvoker<device::icf::GK107PolicyX4>(levels, octaves, stages, nodes, leaves);
+        = device::icf::CascadeInvoker<device::icf::GK107PolicyX4>(levels, stages, nodes, leaves);
         invoker(roi, hogluv, objects, count, downscales, stream);
     }
 
@@ -414,7 +414,7 @@ private:
     void integrate(const int fh, const int fw, Stream& s)
     {
         GpuMat channels(plane, cv::Rect(0, 0, fw, fh * Fields::HOG_LUV_BINS));
-        cv::gpu::resize(channels, shrunk, cv::Size(), 0.25, 0.25, CV_INTER_AREA, s);
+        cv::gpu::resize(channels, shrunk, cv::Size(), 1.f / shrinkage, 1.f / shrinkage, CV_INTER_AREA, s);
 
         if (info.majorVersion() < 3)
             cv::gpu::integralBuffered(shrunk, hogluv, integralBuffer, s);
@@ -518,7 +518,7 @@ void cv::gpu::SCascade::detect(InputArray image, InputArray _rois, OutputArray _
 
 
     GpuMat tmp = GpuMat(objects, cv::Rect(0, 0, sizeof(Detection), 1));
-    objects = GpuMat(objects, cv::Rect( sizeof(Detection), 0, objects.cols -  sizeof(Detection), 1));
+    objects = GpuMat(objects, cv::Rect( sizeof(Detection), 0, objects.cols - sizeof(Detection), 1));
     cudaStream_t stream = StreamAccessor::getStream(s);
 
     flds.detect(rois, tmp, objects, stream);
@@ -527,13 +527,14 @@ void cv::gpu::SCascade::detect(InputArray image, InputArray _rois, OutputArray _
 void cv::gpu::SCascade::genRoi(InputArray _roi, OutputArray _mask, Stream& stream) const
 {
     CV_Assert(fields);
+    int shr = (*fields).shrinkage;
 
     const GpuMat roi = _roi.getGpuMat();
-    _mask.create( roi.cols / 4, roi.rows / 4, roi.type() );
+    _mask.create( roi.cols / shr, roi.rows / shr, roi.type() );
     GpuMat mask = _mask.getGpuMat();
     cv::gpu::GpuMat tmp;
 
-    cv::gpu::resize(roi, tmp, cv::Size(), 0.25, 0.25, CV_INTER_AREA, stream);
+    cv::gpu::resize(roi, tmp, cv::Size(), 1.f / shr, 1.f / shr, CV_INTER_AREA, stream);
     cv::gpu::transpose(tmp, mask, stream);
 }