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fast.cpp
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109 lines (97 loc) · 3.73 KB
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/*******************************************************
* Copyright (c) 2014, ArrayFire
* All rights reserved.
*
* This file is distributed under 3-clause BSD license.
* The complete license agreement can be obtained at:
* http://arrayfire.com/licenses/BSD-3-Clause
********************************************************/
#include <Array.hpp>
#include <backend.hpp>
#include <common/err_common.hpp>
#include <fast.hpp>
#include <features.hpp>
#include <handle.hpp>
#include <af/defines.h>
#include <af/dim4.hpp>
#include <af/features.h>
#include <af/vision.h>
using af::dim4;
using detail::Array;
using detail::createEmptyArray;
using detail::createValueArray;
using detail::uchar;
using detail::uint;
using detail::ushort;
template<typename T>
static af_features fast(af_array const &in, const float thr,
const unsigned arc_length, const bool non_max,
const float feature_ratio, const unsigned edge) {
Array<float> x = createEmptyArray<float>(dim4());
Array<float> y = createEmptyArray<float>(dim4());
Array<float> score = createEmptyArray<float>(dim4());
af_features_t feat;
feat.n = fast<T>(x, y, score, getArray<T>(in), thr, arc_length, non_max,
feature_ratio, edge);
Array<float> orientation = createValueArray<float>(feat.n, 0.0);
Array<float> size = createValueArray<float>(feat.n, 1.0);
feat.x = getHandle(x);
feat.y = getHandle(y);
feat.score = getHandle(score);
feat.orientation = getHandle(orientation);
feat.size = getHandle(size);
return getFeaturesHandle(feat);
}
af_err af_fast(af_features *out, const af_array in, const float thr,
const unsigned arc_length, const bool non_max,
const float feature_ratio, const unsigned edge) {
try {
const ArrayInfo &info = getInfo(in);
af::dim4 dims = info.dims();
ARG_ASSERT(2, (dims[0] >= (dim_t)(2 * edge + 1) ||
dims[1] >= (dim_t)(2 * edge + 1)));
ARG_ASSERT(3, thr > 0.0f);
ARG_ASSERT(4, (arc_length >= 9 && arc_length <= 16));
ARG_ASSERT(6, (feature_ratio > 0.0f && feature_ratio <= 1.0f));
dim_t in_ndims = dims.ndims();
DIM_ASSERT(1, (in_ndims == 2));
af_dtype type = info.getType();
switch (type) {
case f32:
*out = fast<float>(in, thr, arc_length, non_max, feature_ratio,
edge);
break;
case f64:
*out = fast<double>(in, thr, arc_length, non_max, feature_ratio,
edge);
break;
case b8:
*out = fast<char>(in, thr, arc_length, non_max, feature_ratio,
edge);
break;
case s32:
*out = fast<int>(in, thr, arc_length, non_max, feature_ratio,
edge);
break;
case u32:
*out = fast<uint>(in, thr, arc_length, non_max, feature_ratio,
edge);
break;
case s16:
*out = fast<short>(in, thr, arc_length, non_max, feature_ratio,
edge);
break;
case u16:
*out = fast<ushort>(in, thr, arc_length, non_max, feature_ratio,
edge);
break;
case u8:
*out = fast<uchar>(in, thr, arc_length, non_max, feature_ratio,
edge);
break;
default: TYPE_ERROR(1, type);
}
}
CATCHALL;
return AF_SUCCESS;
}