//因為進行8位儲存，所以除以2
const
int max_value =
255;
const cv:
:string window_capture_name =
"video capture"
;const cv:
:string window_detection_name =
"object detection"
;int low_h =
0, low_s =
0, low_v =0;
int high_h = max_value_h, high_s = max_value, high_v = max_value;
static
void
on_low_h_thresh_trackvbar
(int
,void*)
static
void
on_high_h_thresh_trackbar
(int
,void*)
static
void
on_low_s_thresh_trackbar
(int
,void*)
static
void
on_high_s_thresh_trackbar
(int
,void*)
static
void
on_low_v_thresh_trackbar
(int
,void*)
static
void
on_high_v_thresh_trackvar
(int
,void*)
intmain
(void
) cv:
:cvtcolor
(frame,frame_hsv,cv:
:color_bgr2hsv)
;//轉化到hsv空間
//進行閾值操作，輸出影象為cv_8uc1
inrange
(frame_hsv,
scalar
(low_h,low_s,low_v)
,scalar
(high_h,high_s,high_v)
,frame_threshold)
;imshow
(window_capture_name,frame)
;imshow
(window_detection_name,frame_threshold)
;char key=
(char
)waitkey(30
);//每等待30ms，如果是esc，退出
if(key ==27)
break;}
return0;
};結果：
void cv::inrange
( inputarray src, //輸入影象
inputarray lowerb, //低閾值
inputarray upperb, //高閾值
outputarray dst //輸出影象（same size as src），cv_8uc1)
dst(i) 為1，如果輸入影象的畫素在lowerb和upperb形成的 1d，2d，3d的box裡面，否則為0，
比如1d，則lowerb和upperb只是一維值，如果是3d，則lowerb和upperb只是三維值，輸入影象也是三維，只要每個元素再lowerb和upperb組成的3d box裡面，輸出就是1，所以輸出是cv_8uc1
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