colorfilter.c

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/*
 * Copyright (C) 2015
 *
 * This file is part of Paparazzi.
 *
 * Paparazzi is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * Paparazzi is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Paparazzi; see the file COPYING.  If not, write to
 * the Free Software Foundation, 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */
 
// Own header
#include "modules/computer_vision/colorfilter.h"
#include <stdio.h>
 
#include "modules/computer_vision/lib/vision/image.h"
 
#ifndef COLORFILTER_FPS
#define COLORFILTER_FPS 0       
#endif
PRINT_CONFIG_VAR(COLORFILTER_FPS)
 
 
#ifndef COLORFILTER_SEND_OBSTACLE
#define COLORFILTER_SEND_OBSTACLE FALSE    
#endif
PRINT_CONFIG_VAR(COLORFILTER_SEND_OBSTACLE)
 
struct video_listener *listener = NULL;
 
// Filter Settings
uint8_t color_lum_min = 105;
uint8_t color_lum_max = 205;
uint8_t color_cb_min  = 52;
uint8_t color_cb_max  = 140;
uint8_t color_cr_min  = 180;
uint8_t color_cr_max  = 255;
 
// Result
volatile int color_count = 0;
 
#include "modules/core/abi.h"
 
// Function
static struct image_t *colorfilter_func(struct image_t *img, uint8_t camera_id __attribute__((unused)))
{
  // Filter
  color_count = image_yuv422_colorfilt(img, img,
                                       color_lum_min, color_lum_max,
                                       color_cb_min, color_cb_max,
                                       color_cr_min, color_cr_max
                                      );
 
  if (COLORFILTER_SEND_OBSTACLE) {
    if (color_count > 20)
    {
      AbiSendMsgOBSTACLE_DETECTION(OBS_DETECTION_COLOR_ID, 1.f, 0.f, 0.f);
    }
    else
    {
      AbiSendMsgOBSTACLE_DETECTION(OBS_DETECTION_COLOR_ID, 10.f, 0.f, 0.f);
    }
  }
 
  return img; // Colorfilter did not make a new image
}
 
void colorfilter_init(void)
{
  cv_add_to_device(&COLORFILTER_CAMERA, colorfilter_func, COLORFILTER_FPS, 0);
}