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Diffstat (limited to 'include/ia_imaging/ia_coordinate.h')
| -rw-r--r-- | include/ia_imaging/ia_coordinate.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/include/ia_imaging/ia_coordinate.h b/include/ia_imaging/ia_coordinate.h new file mode 100644 index 0000000..fafa099 --- /dev/null +++ b/include/ia_imaging/ia_coordinate.h @@ -0,0 +1,139 @@ +/* + * Copyright (C) 2015 - 2017 Intel Corporation. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/*! + * \file ia_coordinate.h + * \brief Definitions of IA imaging coordinate system and conversion functions. + * + * IA Imaging algorithms use relative coordinate system where top left corner + * is (0,0) and bottom right corner is (8192,8192). + * + * Coordinate conversions can happen between arbitrary coordinate systems. + * + * Width and height of coordinate system must be > 0. + * + * Zoom factor is not considered in coordinate conversions but it should be + * calculated when defining the target coordinate system. + * + * For example: + * + * |-------------------------------------------| + * |(0,0) | + * | | + * | (1800,1700) | + * | |--------------| | + * | |(-100,-100) | | + * | | | | + * | | (100,100)| | + * | |--------------| | + * | (5500,4000) | + * | | + * | | + * | | + * | | + * | (8192,8192)| + * |-------------------------------------------| + * + * + * There is an algorithm which works on cropped area with own coordinate system A + * [(-100,100), (100.100)] inside another coordinate system B [(0,0), (8192,8192)]. + * + * To convert results from coordinate system A to B, one must define source and target + * coordinate systems: + * Source system is coordinate system A. + * src_system: [(-100,100), (100.100)] + * + * Target system defines the cropped rectangle from inside coordinate system B. + * trg_system: [(1800,1700), (5500,4000)] + * + */ + + +#ifndef IA_COORDINATE_H_ +#define IA_COORDINATE_H_ + +#include "ia_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/*! \brief Definitions of IA imaging coordinate system. */ +#define IA_COORDINATE_TOP 0 +#define IA_COORDINATE_LEFT 0 +#define IA_COORDINATE_BOTTOM 8192 +#define IA_COORDINATE_RIGHT 8192 +#define IA_COORDINATE_WIDTH (IA_COORDINATE_RIGHT-IA_COORDINATE_LEFT) +#define IA_COORDINATE_HEIGHT (IA_COORDINATE_BOTTOM-IA_COORDINATE_TOP) + +/*! + * \brief Coordinate system. + * Defines the coordinate space boundaries. + */ +typedef struct +{ + long top; /*!< Top coordinate value in the coordinate system. */ + long left; /*!< Left coordinate value in the coordinate system. */ + long bottom; /*!< Bottom coordinate value in the coordinate system. */ + long right; /*!< Right coordinate value in the coordinate system. */ +} ia_coordinate_system; + +/*! + * \brief Convert coordinate from source coordinate space to target coordinate space. + * \param[in] src_system Source coordinate system boundaries. + * \param[in] trg_system Target coordinate system boundaries. + * \param[in] src_coordinate Coordinate values in source coordinate system. + * \return Target coordinate converted from source coordinate. + */ +LIBEXPORT ia_coordinate +ia_coordinate_convert( + const ia_coordinate_system *src_system, + const ia_coordinate_system *trg_system, + const ia_coordinate src_coordinate); + +/*! +* Converts a rectangle from one coordinate system to another. +* +* \param [in] a_src_system_ptr The source coordinate system. +* \param [in] a_src_rect_ptr The source rectangle. +* \param [in] a_tgt_system_ptr The target coordinate system. +* \param [out] a_tgt_rect_ptr The calculated target rectangle. +*/ +LIBEXPORT void +ia_coordinate_convert_rect( + const ia_coordinate_system* a_src_system_ptr, + const ia_rectangle* a_src_rect_ptr, + const ia_coordinate_system* a_tgt_system_ptr, + ia_rectangle* a_tgt_rect_ptr); + +/*! + * \brief Convert face coordinates to target coordinate system. + * \param[in,out] face_state Structure containing face information from face tracker. + * \param[in] src_system Source coordinate system boundaries. + * \param[in] trg_system Target coordinate system boundaries. + */ +LIBEXPORT void +ia_coordinate_convert_faces( + const ia_coordinate_system *src_system, + const ia_coordinate_system *trg_system); + +#ifdef __cplusplus +} +#endif + + +#endif /* IA_COORDINATE_H_ */ + |