在图像上绘制图形

程序小小黑 2023-12-14 阅读 56

2.1
cv. tine( img, start , end , color, thickness)
• Start,end:
• color:
• Thickness:

2 ． 2 绘制圆形
CV• （ ir （亻 in ‰ centerpoint,
参数．
· img ：要绘制塑形的图像
· Centerpoint ， r: 圆心和半径
． color: 线条的颜色
（ 0100
thickness)
· Thickness: 线条宽度，为． 1 时生成闭合图并填充顔色

2.3
cv. rectang img, leftupper , rightdown,co lor , thickness)
• Leftupper, rightdown:
• color.
Thickness:
2.4
cv. putText( Ing, text, station, font, fontsize,color, thickness, LINE_AA)
• img:
• text:
• station:
• tont:
• Fontsize

1. imread( CV2.1MGRAD_GRAYSCALE)
2. cvtCotor(src, code, cist)
—.ftift. (0. 1. 1å+ffiO. m A-ffi255)
threshold(src , thresh , maxvat)

cv2. , rgb) ;
cv2. , gray) ;
threshvale , bitgray=cv2. threshold(gray , 100 , 255 , O) ;
imghstack=np . hstack( (gray , bitgray) )
#hstack
cv2. imshow(" gray-bit" , imghstack)
#cv2. destroyAt LIVIndows ;
i. 34
- 43

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