arduino-esp32/tools/sdk/include/esp-face/mtmn.h

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/*
* ESPRESSIF MIT License
*
* Copyright (c) 2018 <ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD>
*
* Permission is hereby granted for use on ESPRESSIF SYSTEMS products only, in which case,
* it is 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.
*
*/
#pragma once
#ifdef __cplusplus
extern "C"
{
#endif
#include "dl_lib_matrix3d.h"
typedef struct
{
float score; /// score threshold for filter candidates by score
float nms; /// nms threshold for nms process
int candidate_number; /// candidate number limitation for each net
} threshold_config_t;
typedef struct
{
int w; /// net width
int h; /// net height
threshold_config_t threshold; /// threshold of net
} net_config_t;
typedef struct
{
dl_matrix3d_t *category;
dl_matrix3d_t *offset;
dl_matrix3d_t *landmark;
} mtmn_net_t;
/**
* @brief Forward the pnet process, coarse detection
*
* @param in Image matrix, rgb888 format, size is 320x240
* @return Scores for every pixel, and box offset with respect.
*/
mtmn_net_t *pnet(dl_matrix3du_t *in);
/**
* @brief Forward the rnet process, fine determine the boxes from pnet
*
* @param in Image matrix, rgb888 format
* @param threshold Score threshold to detect human face
* @return Scores for every box, and box offset with respect.
*/
mtmn_net_t *rnet_with_score_verify(dl_matrix3du_t *in, float threshold);
/**
* @brief Forward the onet process, fine determine the boxes from rnet
*
* @param in Image matrix, rgb888 format
* @param threshold Score threshold to detect human face
* @return Scores for every box, box offset, and landmark with respect.
*/
mtmn_net_t *onet_with_score_verify(dl_matrix3du_t *in, float threshold);
#ifdef __cplusplus
}
#endif