From 6ff3b19ee6120edf015fad8caab2991faa3070af Mon Sep 17 00:00:00 2001 From: Anthony Barbier Date: Mon, 4 Sep 2017 18:44:23 +0100 Subject: COMPMID-344 Updated doxygen Change-Id: I32f7b84daa560e460b77216add529c8fa8b327ae --- src/core/CL/cl_kernels/non_linear_filter3x3.cl | 186 +++++++++++++++++++++++++ 1 file changed, 186 insertions(+) create mode 100644 src/core/CL/cl_kernels/non_linear_filter3x3.cl (limited to 'src/core/CL/cl_kernels/non_linear_filter3x3.cl') diff --git a/src/core/CL/cl_kernels/non_linear_filter3x3.cl b/src/core/CL/cl_kernels/non_linear_filter3x3.cl new file mode 100644 index 0000000000..f860c96bb8 --- /dev/null +++ b/src/core/CL/cl_kernels/non_linear_filter3x3.cl @@ -0,0 +1,186 @@ +/* + * Copyright (c) 2017 ARM Limited. + * + * SPDX-License-Identifier: MIT + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include "helpers.h" +#include "non_linear_filter_helpers.h" + +/** This function applies a non linear filter on a 3x3 box basis on an input image. + * + * @note The needed filter operation is defined through the preprocessor by passing either -DMIN, -DMAX or -DMEDIAN. + * + * @param[in] src_ptr Pointer to the source image. Supported data types: U8 + * @param[in] src_stride_x Stride of the source image in X dimension (in bytes) + * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] src_stride_y Stride of the source image in Y dimension (in bytes) + * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source image + * @param[out] dst_ptr Pointer to the destination image. Supported data types: U8 + * @param[in] dst_stride_x Stride of the destination image in X dimension (in bytes) + * @param[in] dst_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] dst_stride_y Stride of the destination image in Y dimension (in bytes) + * @param[in] dst_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination image + */ +__kernel void non_linear_filter_box3x3( + IMAGE_DECLARATION(src), + IMAGE_DECLARATION(dst)) +{ + Image src = CONVERT_TO_IMAGE_STRUCT(src); + Image dst = CONVERT_TO_IMAGE_STRUCT(dst); + + // Load values + uchar16 top = vload16(0, offset(&src, -1, -1)); + uchar16 middle = vload16(0, offset(&src, -1, 0)); + uchar16 bottom = vload16(0, offset(&src, -1, 1)); + + // Apply respective filter +#if defined MIN + uchar16 tmp = min(top, min(middle, bottom)); + uchar8 out = row_reduce_min_3(tmp); +#elif defined MAX + uchar16 tmp = max(top, max(middle, bottom)); + uchar8 out = row_reduce_max_3(tmp); +#elif defined MEDIAN + uchar8 p0 = top.s01234567; + uchar8 p1 = top.s12345678; + uchar8 p2 = top.s23456789; + uchar8 p3 = middle.s01234567; + uchar8 p4 = middle.s12345678; + uchar8 p5 = middle.s23456789; + uchar8 p6 = bottom.s01234567; + uchar8 p7 = bottom.s12345678; + uchar8 p8 = bottom.s23456789; + uchar8 out = sort9(p0, p1, p2, p3, p4, p5, p6, p7, p8); +#else +#error "Unsupported filter function" +#endif + + // Store result + vstore8(out, 0, dst.ptr); +} + +/** This function applies a non linear filter on a 3x3 cross basis on an input image. + * + * @note The needed filter operation is defined through the preprocessor by passing either -DMIN, -DMAX or -DMEDIAN. + * + * @param[in] src_ptr Pointer to the source image. Supported data types: U8 + * @param[in] src_stride_x Stride of the source image in X dimension (in bytes) + * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] src_stride_y Stride of the source image in Y dimension (in bytes) + * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source image + * @param[out] dst_ptr Pointer to the destination image. Supported data types: U8 + * @param[in] dst_stride_x Stride of the destination image in X dimension (in bytes) + * @param[in] dst_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] dst_stride_y Stride of the destination image in Y dimension (in bytes) + * @param[in] dst_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination image + */ +__kernel void non_linear_filter_cross3x3( + IMAGE_DECLARATION(src), + IMAGE_DECLARATION(dst)) +{ + Image src = CONVERT_TO_IMAGE_STRUCT(src); + Image dst = CONVERT_TO_IMAGE_STRUCT(dst); + + // Load values + uchar8 top = vload8(0, offset(&src, 0, -1)); + uchar16 middle = vload16(0, offset(&src, -1, 0)); + uchar8 bottom = vload8(0, offset(&src, 0, 1)); + + // Apply respective filter +#if defined MIN + uchar8 tmp_middle = row_reduce_min_3(middle); + uchar8 out = min(tmp_middle, min(top, bottom)); +#elif defined MAX + uchar8 tmp_middle = row_reduce_max_3(middle); + uchar8 out = max(tmp_middle, max(top, bottom)); +#elif defined MEDIAN + uchar8 p0 = top.s01234567; + uchar8 p1 = middle.s01234567; + uchar8 p2 = middle.s12345678; + uchar8 p3 = middle.s23456789; + uchar8 p4 = bottom.s01234567; + uchar8 out = sort5(p0, p1, p2, p3, p4); +#else +#error "Unsupported filter function" +#endif + + // Store result + vstore8(out, 0, dst.ptr); +} + +/** This function applies a non linear filter on a 3x3 disk basis on an input image. + * + * @note The needed filter operation is defined through the preprocessor by passing either -DMIN, -DMAX or -DMEDIAN. + * + * @param[in] src_ptr Pointer to the source image. Supported data types: U8 + * @param[in] src_stride_x Stride of the source image in X dimension (in bytes) + * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] src_stride_y Stride of the source image in Y dimension (in bytes) + * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source image + * @param[out] dst_ptr Pointer to the destination image. Supported data types: U8 + * @param[in] dst_stride_x Stride of the destination image in X dimension (in bytes) + * @param[in] dst_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] dst_stride_y Stride of the destination image in Y dimension (in bytes) + * @param[in] dst_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination image + */ +__kernel void non_linear_filter_disk3x3( + IMAGE_DECLARATION(src), + IMAGE_DECLARATION(dst)) +{ + Image src = CONVERT_TO_IMAGE_STRUCT(src); + Image dst = CONVERT_TO_IMAGE_STRUCT(dst); + + // Load values + uchar16 top = vload16(0, offset(&src, -1, -1)); + uchar16 middle = vload16(0, offset(&src, -1, 0)); + uchar16 bottom = vload16(0, offset(&src, -1, 1)); + + // Apply respective filter +#if defined MIN + uchar16 tmp = min(top, min(middle, bottom)); + uchar8 out = row_reduce_min_3(tmp); +#elif defined MAX + uchar16 tmp = max(top, max(middle, bottom)); + uchar8 out = row_reduce_max_3(tmp); +#elif defined MEDIAN + uchar8 p0 = top.s01234567; + uchar8 p1 = top.s12345678; + uchar8 p2 = top.s23456789; + uchar8 p3 = middle.s01234567; + uchar8 p4 = middle.s12345678; + uchar8 p5 = middle.s23456789; + uchar8 p6 = bottom.s01234567; + uchar8 p7 = bottom.s12345678; + uchar8 p8 = bottom.s23456789; + uchar8 out = sort9(p0, p1, p2, p3, p4, p5, p6, p7, p8); +#else +#error "Unsupported filter function" +#endif + + // Store result + vstore8(out, 0, dst.ptr); +} -- cgit v1.2.1