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EasyTrace簡介：
使用EasyTrace可以對單一顏色物體進行實時跟蹤識別
EasyTrace特點：
1.代碼只有300行，非常簡單
2.識別一次只需要2至5毫秒，實時性強
3.只有1個API，使用方便
static int ColorMatch(const COLOR_HSL *Hsl,const TARGET_CONDI *Condition)//顏色匹配
{
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;
}
//從腐蝕中心向外腐蝕得到新的腐蝕中心
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;
}
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