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dog.cpp
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83 lines (72 loc) · 2.77 KB
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/*******************************************************
* Copyright (c) 2015, 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 <arith.hpp>
#include <backend.hpp>
#include <common/err_common.hpp>
#include <convolve.hpp>
#include <handle.hpp>
#include <af/defines.h>
#include <af/dim4.hpp>
#include <af/image.h>
#include <af/vision.h>
using af::dim4;
using detail::arithOp;
using detail::Array;
using detail::convolve;
using detail::schar;
using detail::uchar;
using detail::uint;
using detail::ushort;
template<typename T, typename accT>
static af_array dog(const af_array& in, const int radius1, const int radius2) {
af_array g1, g2;
g1 = g2 = 0;
AF_CHECK(
af_gaussian_kernel(&g1, 2 * radius1 + 1, 2 * radius1 + 1, 0.0, 0.0));
AF_CHECK(
af_gaussian_kernel(&g2, 2 * radius2 + 1, 2 * radius2 + 1, 0.0, 0.0));
Array<accT> input = castArray<accT>(in);
dim4 iDims = input.dims();
AF_BATCH_KIND bkind = iDims[2] > 1 ? AF_BATCH_LHS : AF_BATCH_NONE;
Array<accT> smth1 =
convolve<accT, accT>(input, castArray<accT>(g1), bkind, 2, false);
Array<accT> smth2 =
convolve<accT, accT>(input, castArray<accT>(g2), bkind, 2, false);
Array<accT> retVal = arithOp<accT, af_sub_t>(smth1, smth2, iDims);
AF_CHECK(af_release_array(g1));
AF_CHECK(af_release_array(g2));
return getHandle<accT>(retVal);
}
af_err af_dog(af_array* out, const af_array in, const int radius1,
const int radius2) {
try {
const ArrayInfo& info = getInfo(in);
dim4 inDims = info.dims();
ARG_ASSERT(1, (inDims.ndims() >= 2));
ARG_ASSERT(1, (inDims.ndims() <= 3));
af_array output;
af_dtype type = info.getType();
switch (type) {
case f32: output = dog<float, float>(in, radius1, radius2); break;
case f64: output = dog<double, double>(in, radius1, radius2); break;
case b8: output = dog<char, float>(in, radius1, radius2); break;
case s32: output = dog<int, float>(in, radius1, radius2); break;
case u32: output = dog<uint, float>(in, radius1, radius2); break;
case s16: output = dog<short, float>(in, radius1, radius2); break;
case u16: output = dog<ushort, float>(in, radius1, radius2); break;
case s8: output = dog<schar, float>(in, radius1, radius2); break;
case u8: output = dog<uchar, float>(in, radius1, radius2); break;
default: TYPE_ERROR(1, type);
}
std::swap(*out, output);
}
CATCHALL;
return AF_SUCCESS;
}