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43
44#pragma once
45
46#ifndef __OPENCV_CUDEV_GRID_HISTOGRAM_HPP__
47#define __OPENCV_CUDEV_GRID_HISTOGRAM_HPP__
48
49#include "../common.hpp"
50#include "../ptr2d/traits.hpp"
51#include "../ptr2d/gpumat.hpp"
52#include "../ptr2d/mask.hpp"
53#include "detail/histogram.hpp"
54
55namespace cv { namespace cudev {
56
57//! @addtogroup cudev
58//! @{
59
60template <int BIN_COUNT, class Policy, class SrcPtr, typename ResType, class MaskPtr>
61__host__ void gridHistogram_(const SrcPtr& src, GpuMat_<ResType>& dst, const MaskPtr& mask, Stream& stream = Stream::Null())
62{
63    CV_Assert( deviceSupports(SHARED_ATOMICS) );
64
65    const int rows = getRows(src);
66    const int cols = getCols(src);
67
68    CV_Assert( getRows(mask) == rows && getCols(mask) == cols );
69
70    dst.create(1, BIN_COUNT);
71    dst.setTo(0, stream);
72
73    grid_histogram_detail::histogram<BIN_COUNT, Policy>(shrinkPtr(src),
74                                                        dst[0],
75                                                        shrinkPtr(mask),
76                                                        rows, cols,
77                                                        StreamAccessor::getStream(stream));
78}
79
80template <int BIN_COUNT, class Policy, class SrcPtr, typename ResType>
81__host__ void gridHistogram_(const SrcPtr& src, GpuMat_<ResType>& dst, Stream& stream = Stream::Null())
82{
83    CV_Assert( deviceSupports(SHARED_ATOMICS) );
84
85    const int rows = getRows(src);
86    const int cols = getCols(src);
87
88    dst.create(1, BIN_COUNT);
89    dst.setTo(0, stream);
90
91    grid_histogram_detail::histogram<BIN_COUNT, Policy>(shrinkPtr(src),
92                                                        dst[0],
93                                                        WithOutMask(),
94                                                        rows, cols,
95                                                        StreamAccessor::getStream(stream));
96}
97
98// default policy
99
100struct DefaultHistogramPolicy
101{
102    enum {
103        block_size_x = 32,
104        block_size_y = 8
105    };
106};
107
108template <int BIN_COUNT, class SrcPtr, typename ResType, class MaskPtr>
109__host__ void gridHistogram(const SrcPtr& src, GpuMat_<ResType>& dst, const MaskPtr& mask, Stream& stream = Stream::Null())
110{
111    gridHistogram_<BIN_COUNT, DefaultHistogramPolicy>(src, dst, mask, stream);
112}
113
114template <int BIN_COUNT, class SrcPtr, typename ResType>
115__host__ void gridHistogram(const SrcPtr& src, GpuMat_<ResType>& dst, Stream& stream = Stream::Null())
116{
117    gridHistogram_<BIN_COUNT, DefaultHistogramPolicy>(src, dst, stream);
118}
119
120//! @}
121
122}}
123
124#endif
125