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：

参数具体表述image绘制的图像text绘制的文本org文本在图像中显示的坐标，用元组表示格式为(X坐标，Y坐标)font文本字体类型，值可以为FONT_HERSHEY_SIMPLEX、FONT_HERSHEY_PLAINfontScale字体比例因子乘以font-specific基本大小color文本颜色，设置三通道的元组，比如(255，0，0)thickness线的粗细lineType可选参数，行的类型bottomLeftOrigin可选参数，true表示数据位于原点左下角，flase位于左上角。

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：

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