Simple Get Mean

นี่คือตัวอย่างที่ง่ายมากของวิธีใช้ cc3-ilp เพื่อรับข้อมูลสี เอาต์พุตบนโปรแกรมเทอร์มินัล (115,200 8N1) จะมีลักษณะประมาณนี้:

min = [23,16,16] mean = [104,99,64] max = [240,200,129] deviation = [108,92,56]
min = [28,16,16] mean = [106,100,63] max = [236,197,130] deviation = [104,90,57]
min = [25,16,16] mean = [102,99,66] max = [240,202,130] deviation = [107,93,57]
min = [22,16,16] mean = [103,98,61] max = [240,191,120] deviation = [109,87,52]
min = [21,16,16] mean = [102,98,64] max = [240,201,120] deviation = [109,92,52]
min = [27,17,16] mean = [104,100,64] max = [240,194,123] deviation = [106,88,53]
min = [25,16,16] mean = [102,98,64] max = [230,201,127] deviation = [102,92,55]

โค้ดมีลักษณะดังนี้:

#include <stdio.h>
#include <stdlib.h>
#include <cc3.h>
#include <cc3_ilp.h>
#include <cc3_color_info.h>

void simple_get_mean(cc3_color_info_pkt_t * s_pkt);

int main(void) {
  cc3_color_info_pkt_t s_pkt;

  cc3_uart_init (0,
         CC3_UART_RATE_115200,
         CC3_UART_MODE_8N1,
         CC3_UART_BINMODE_TEXT);

  cc3_camera_init ();

  //cc3_camera_set_colorspace(CC3_COLORSPACE_YCRCB);
  cc3_camera_set_resolution(CC3_CAMERA_RESOLUTION_LOW);
  //cc3_pixbuf_frame_set_subsample(CC3_SUBSAMPLE_NEAREST, 2, 2);
  cc3_camera_set_auto_exposure (true);
  cc3_camera_set_auto_white_balance (true);

  cc3_led_set_state (0, false);
  printf ("Waiting for image to stabilize\n");
  cc3_timer_wait_ms (2000);
  cc3_led_set_state (0, true);
  cc3_camera_set_auto_exposure (false);
  cc3_camera_set_auto_white_balance (false);

  while(true) {
    simple_get_mean(&s_pkt);
    printf( "min = [%d,%d,%d] mean = [%d,%d,%d] max = [%d,%d,%d] deviation = [%d,%d,%d]\n",
            s_pkt.min.channelr0,
            s_pkt.min.channelr1,
            s_pkt.min.channelr2,
            s_pkt.mean.channelr0,
            s_pkt.mean.channelr1,
            s_pkt.mean.channelr2,
            s_pkt.max.channelr0,
            s_pkt.max.channelr1,
            s_pkt.max.channelr2,
            s_pkt.deviation.channelr0,
            s_pkt.deviation.channelr1,
            s_pkt.deviation.channelr2
            );

   }

}

void simple_get_mean (cc3_color_info_pkt_t * s_pkt)
{
  cc3_image_t img;
  img.channels = 3;
  img.width = cc3_g_pixbuf_frame.width;
  img.height = 1;               // image will hold just 1 row for scanline processing
  img.pix = malloc (3 * img.width);

  cc3_pixbuf_load ();
  if (cc3_color_info_scanline_start (s_pkt) != 0) {
    while (cc3_pixbuf_read_rows (img.pix, 1)) {
      cc3_color_info_scanline (&img, s_pkt);
    }
    cc3_color_info_scanline_finish (s_pkt);
  }
  free (img.pix);
}