基于ov7670颜色识别

只看该作者 · 2023-12-30 22:14

EasyTrace简介：
使用EasyTrace可以对单一颜色物体进行实时跟踪识别

EasyTrace特点：
1.代码只有300行，非常简单
2.识别一次只需要2至5毫秒，实时性强
3.只有1个API，使用方便

static int ColorMatch(const COLOR_HSL *Hsl,const TARGET_CONDI *Condition)//颜色匹配
{
      if(
            Hsl->hue             >       Condition->H_MIN &&
            Hsl->hue             <       Condition->H_MAX &&
            Hsl->saturation       >       Condition->S_MIN &&
            Hsl->saturation       < Condition->S_MAX &&
            Hsl->luminance       >       Condition->L_MIN &&
            Hsl->luminance       < Condition->L_MAX
)
            return 1;
      else
            return 0;
}
//从腐蚀中心向外腐蚀得到新的腐蚀中心
static int Corrode(unsigned int oldx,unsigned int oldy,const TARGET_CONDI *Condition,RESULT *Resu)
{
      unsigned int Xmin,Xmax,Ymin,Ymax,i,FailCount=0;
      COLOR_RGB Rgb;
      COLOR_HSL Hsl;

      for(i=oldx;i>IMG_X;i--)
      {
            ReadColor(i,oldy,&Rgb);
            RGBtoHSL(&Rgb,&Hsl);
            if(!ColorMatch(&Hsl,Condition))
                     FailCount++;
            if(FailCount>(((Condition->WIDTH_MIN+Condition->WIDTH_MAX)>>2)>>ALLOW_FAIL_PER))
                     break;
      }
      Xmin=i;
      FailCount=0;

      for(i=oldx;i<IMG_X+IMG_W;i++)
      {
            ReadColor(i,oldy,&Rgb);
            RGBtoHSL(&Rgb,&Hsl);
            if(!ColorMatch(&Hsl,Condition))
                     FailCount++;
            if(FailCount>(((Condition->WIDTH_MIN+Condition->WIDTH_MAX)>>2)>>ALLOW_FAIL_PER))
                     break;
      }
      Xmax=i;
      FailCount=0;

      for(i=oldy;i>IMG_Y;i--)
      {
            ReadColor(oldx,i,&Rgb);
            RGBtoHSL(&Rgb,&Hsl);
            if(!ColorMatch(&Hsl,Condition))
                     FailCount++;
            if(FailCount>(((Condition->HIGHT_MIN+Condition->HIGHT_MAX)>>2)>>ALLOW_FAIL_PER))
                     break;
      }
      Ymin=i;
      FailCount=0;

      for(i=oldy;i<IMG_Y+IMG_H;i++)
      {
            ReadColor(oldx,i,&Rgb);
            RGBtoHSL(&Rgb,&Hsl);
            if(!ColorMatch(&Hsl,Condition))
                     FailCount++;
            if(FailCount>(((Condition->HIGHT_MIN+Condition->HIGHT_MAX)>>2)>>ALLOW_FAIL_PER))
                     break;
      }
      Ymax=i;
      FailCount=0;

      Resu->x       = (Xmin+Xmax)/2;
      Resu->y       = (Ymin+Ymax)/2;
      Resu->w       = Xmax-Xmin;
      Resu->h       = Ymax-Ymin;

      if(((Xmax-Xmin)>(Condition->WIDTH_MIN)) && ((Ymax-Ymin)>(Condition->HIGHT_MIN)) &&\
         ((Xmax-Xmin)<(Condition->WIDTH_MAX)) && ((Ymax-Ymin)<(Condition->HIGHT_MAX)) )
            return 1;
      else
            return 0;
}