#include <stdio.h>
#include "captcha.h"


double get_btm_right_density(int height, int width, int start_row, int start_column, int box_height, int box_width, int pixels[height][width]){
   int y = start_row+(box_height-1)*0.5, x = start_column+((box_width-1)*0.5);
   double density = 0, total_pixels = 0, n_black_pixels = 0;
   while(y >= start_row){
      while(x <= start_column+(box_width-1)){
         total_pixels ++;
         //printf("%d\n", width);
         if(pixels[y][x] == 1){
            n_black_pixels ++;
         }
         x++;
      }
      x = start_column+((box_width-1)*0.5);
      y--;
   }
   //printf("black pix = %lf, total pix = %lf \n", n_black_pixels, total_pixels);
   //printf("%f\n", (column_sum/n_black_pixels + 0.5)/width);
   return (n_black_pixels/total_pixels);
}