目录

• 1. 函数讲解
• 2. 代码讲解

1. 函数讲解

具体函数如下：

cv2.putText(image, text, org, font, fontScale, color[, thickness[, lineType[, bottomLeftOrigin]]])

函数源码如下：

def putText(img, text, org, fontFace, fontScale, color, thickness=None, lineType=None, bottomLeftOrigin=None): # real signature unknown; restored from __doc__
    """
    putText(img, text, org, fontFace, fontScale, color[, thickness[, lineType[, bottomLeftOrigin]]]) -> img
    .   @brief Draws a text string.
    .   
    .   The function cv::putText renders the specified text string in the image. Symbols that cannot be rendered
    .   using the specified font are replaced by question marks. See #getTextSize for a text rendering code
    .   example.
    .   
    .   @param img Image.
    .   @param text Text string to be drawn.
    .   @param org Bottom-left corner of the text string in the image.
    .   @param fontFace Font type, see #HersheyFonts.
    .   @param fontScale Font scale factor that is multiplied by the font-specific base size.
    .   @param color Text color.
    .   @param thickness Thickness of the lines used to draw a text.
    .   @param lineType Line type. See #LineTypes
    .   @param bottomLeftOrigin When true, the image data origin is at the bottom-left corner. Otherwise,
    .   it is at the top-left corner.
    """
    pass

对应的参数如下：

对应的字体类型如下：

• cv.FONT_ITALIC：斜体字的标志
• cv.FONT_HERSHEY_PLAIN：小尺寸无衬线字体
• cv.FONT_HERSHEY_SIMPLEX：正常大小的无衬线字体
• cv.FONT_HERSHEY_DUPLEX：正常大小的无衬线字体（比FONT_HERSHEY_SIMPLEX更复杂）
• cv.FONT_HERSHEY_COMPLEX：正常大小的衬线字体
• cv.FONT_HERSHEY_TRIPLEX：正常大小的衬线字体（比FONT_HERSHEY_COMPLEX更复杂）
• cv.FONT_HERSHEY_SCRIPT_SIMPLEX：手写体字体
• cv.FONT_HERSHEY_SCRIPT_COMPLEX（比FONT_HERSHEY_SCRIPT_SIMPLEX的更复杂）

2. 代码讲解

import cv2 
import matplotlib.pyplot as plt

image = cv2.imread("Gym.jpg") 
     
font = cv2.FONT_HERSHEY_SIMPLEX 
org = (100, 100) 
fontScale = 1
color = (255, 0, 0) 
thickness = 3
   
image = cv2.putText(image, 'manong yanjiuseng', org, font,fontScale, color, thickness, cv2.LINE_AA) 
   
plt.imshow(image)
plt.show()

截图如下：