[OpenCV] putText 폰트 c++

참고자료 : Contour & Bounding Box 예제 

1. putText 사용법

void putText(Mat& img, 
             const string& text, 
             Point org, int fontFace, 
             double fontScale, 
             Scalar color, 
             int thickness=1, 
             int lineType=8, 
             bool bottomLeftOrigin=false )

2. putText 매개변수

• img – Image.

• text – Text string to be drawn.

• org – Bottom-left corner of the text string in the image.

• font – CvFont structure initialized using InitFont().

• fontFace – Font type. One of FONT_HERSHEY_SIMPLEX, FONT_HERSHEY_PLAIN, FONT_HERSHEY_DUPLEX, FONT_HERSHEY_COMPLEX, FONT_HERSHEY_TRIPLEX, FONT_HERSHEY_COMPLEX_SMALL, FONT_HERSHEY_SCRIPT_SIMPLEX, or FONT_HERSHEY_SCRIPT_COMPLEX, where each of the font ID’s can be combined with FONT_ITALIC to get the slanted letters.

• fontScale – Font scale factor that is multiplied by the font-specific base size.

• color – Text color.

• thickness – Thickness of the lines used to draw a text.

• lineType – Line type. See the line for details.

• bottomLeftOrigin – When true, the image data origin is at the bottom-left corner. Otherwise, it is at the top-left corner.

3. putText 폰트 종류

개인적으로 첫번째 폰트가 제일 나은듯 

• CV_FONT_HERSHEY_SIMPLEX normal size sans-serif font 

• CV_FONT_HERSHEY_PLAIN small size sans-serif font

• CV_FONT_HERSHEY_DUPLEX normal size sans-serif font (more complex than CV_FONT_HERSHEY_SIMPLEX )

• CV_FONT_HERSHEY_COMPLEX normal size serif font

• CV_FONT_HERSHEY_TRIPLEX normal size serif font (more complex than CV_FONT_HERSHEY_COMPLEX )

• CV_FONT_HERSHEY_COMPLEX_SMALL smaller version of CV_FONT_HERSHEY_COMPLEX

• CV_FONT_HERSHEY_SCRIPT_SIMPLEX hand-writing style font

• CV_FONT_HERSHEY_SCRIPT_COMPLEX more complex variant of CV_FONT_HERSHEY_SCRIPT_SIMPLEX

1. CV_FONT_HERSHEY_SIMPLEX

2. CV_FONT_HERSHEY_PLAIN 

3. CV_FONT_HERSHEY_DUPLEX 

4. CV_FONT_HERSHEY_COMPLEX 

5. CV_FONT_HERSHEY_TRIPLEX 

6. CV_FONT_HERSHEY_COMPLEX_SMALL 

7. CV_FONT_HERSHEY_SCRIPT_SIMPLEX 

8. CV_FONT_HERSHEY_SCRIPT_COMPLEX 

4. putText 사용예제

putText(result, buf1, p, CV_FONT_HERSHEY_SIMPLEX, 0.4, cv::Scalar(255,0,0), 1, 1);