对python opencv 添加文字 cv2.putText 的各参数介绍


						如下所示：

cv2.putText(img, str(i), (123,456)), font, 2, (0,255,0), 3)

各参数依次是：图片，添加的文字，左上角坐标，字体，字体大小，颜色，字体粗细

其中字体可以选择 

FONT_HERSHEY_SIMPLEX 

Python: cv.FONT_HERSHEY_SIMPLEX 

normal size sans-serif font

FONT_HERSHEY_PLAIN 

Python: cv.FONT_HERSHEY_PLAIN 

small size sans-serif font

FONT_HERSHEY_DUPLEX 

Python: cv.FONT_HERSHEY_DUPLEX 

normal size sans-serif font (more complex than FONT_HERSHEY_SIMPLEX)

FONT_HERSHEY_COMPLEX 

Python: cv.FONT_HERSHEY_COMPLEX 

normal size serif font

FONT_HERSHEY_TRIPLEX 

Python: cv.FONT_HERSHEY_TRIPLEX 

normal size serif font (more complex than FONT_HERSHEY_COMPLEX)

FONT_HERSHEY_COMPLEX_SMALL 

Python: cv.FONT_HERSHEY_COMPLEX_SMALL 

smaller version of FONT_HERSHEY_COMPLEX

FONT_HERSHEY_SCRIPT_SIMPLEX 

Python: cv.FONT_HERSHEY_SCRIPT_SIMPLEX 

hand-writing style font

FONT_HERSHEY_SCRIPT_COMPLEX 

Python: cv.FONT_HERSHEY_SCRIPT_COMPLEX 

more complex variant of FONT_HERSHEY_SCRIPT_SIMPLEX

FONT_ITALIC 

Python: cv.FONT_ITALIC 

flag for italic font

字体大小，数值越大，字体越大

字体粗细，越大越粗，数值表示线占有直径像素个数





void cv::putText(

 InputOutputArray img,

 const String & text,

 Point org,

 int  fontFace,

 double fontScale,

 Scalar color,

 int  thickness = 1,

 int  lineType = LINE_8,

 bool bottomLeftOrigin = false 

)  

Python:

img =cv.putText(img, text, org, fontFace,fontScale, color[, thickness[, lineType[, bottomLeftOrigin]]])





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