ssd_postprocess/box.h

/*
 * Copyright 2022 Google LLC
 *
 * 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.
 */

#ifndef SSD_POSTPROCESS_BOX_H_
#define SSD_POSTPROCESS_BOX_H_

#include <stdint.h>

#include "ssd_postprocess/common.h"

#ifdef __cplusplus
extern "C" {
#endif  // __cplusplus

#ifndef SSD_BOX_DIMS
#define SSD_BOX_DIMS 4
#endif
#ifndef SSD_MAX_LAYERS
#define SSD_MAX_LAYERS 8
#endif
#ifndef SSD_MAX_ANCHORS_PER_CELL
#define SSD_MAX_ANCHORS_PER_CELL 6
#endif

typedef struct {
  int num_layers;
  int num_boxes;
  int input_height;
  int input_width;
  int global_scales[SSD_BOX_DIMS];
  int box_zero_points[SSD_BOX_DIMS];
  float box_scales[SSD_BOX_DIMS];
  int score_zero_points[SSD_BOX_DIMS];
  float score_scales[SSD_BOX_DIMS];
  float score_threshold;
  int anchors_per_cell;
  float anchor_base_size[SSD_MAX_LAYERS * SSD_MAX_ANCHORS_PER_CELL];
  int anchor_stride[SSD_MAX_LAYERS];
} SsdParams;

// Set SSD parameters
void set_params(SsdParams* params);

// Decode and extract detected boxes from model outputs
void get_detected_boxes(uint8_t** model_out, Boxes* boxes);

#ifdef __cplusplusS
}  // extern "C"
#endif  // __cplusplus

#endif  // SSD_POSTPROCESS_BOX_H_