使用PIL在OpenCV Python中更改字体系列 [英] Changing font family in OpenCV Python using PIL
问题描述
我正在使用cv2.putText()
在视频上放置文字.
I am using cv2.putText()
to put text over a video.
这可以按预期工作,但是我尝试使用其他字体(在OpenCV中不可用).
This works as expected, but I am attempting to use a different font (not available in OpenCV).
我了解OpenCV仅限于cv2.FONT_HERSHEY
字体,因此我将PIL与OpenCV配合使用来实现此目的.
I understand that OpenCV is limited to the cv2.FONT_HERSHEY
fonts, so I am using PIL with OpenCV to achieve this.
我将此方法用于图像,并且实验成功.但是当我在视频上尝试类似的操作时,我就失败了.
I used this method with images and that experiment was successful. But I am failing when I try something similar on a video.
import cv2
from PIL import ImageFont, ImageDraw, Image
camera = cv2.VideoCapture('some_video.wmv')
while cv2.waitKey(30) < 0:
rv, frame = camera.read()
if rv:
font = ImageFont.truetype("calibrii.ttf", 80)
cv2.putText(frame, 'Hello World!', (600, 600), font, 2.8, 255)
cv2.imshow('Video', frame)
我有"calibrii.ttf"在我提到的同一目录中,此方法适用于图像.
I have the "calibrii.ttf" in the same directory and as I mentioned, this approach worked with images.
这是错误:
cv2.putText(frame, 'Hello World!', (600, 600), font, 2.8, 255)
TypeError: an integer is required (got type FreeTypeFont)
推荐答案
您可以使用OpenCV的freetype模块来执行此操作,而无需使用PIL.
You can use OpenCV's freetype module to do so, no need to use PIL.
import cv2
import numpy as np
img = np.zeros((100, 300, 3), dtype=np.uint8)
ft = cv2.freetype.createFreeType2()
ft.loadFontData(fontFileName='Ubuntu-R.ttf',
id=0)
ft.putText(img=img,
text='Quick Fox',
org=(15, 70),
fontHeight=60,
color=(255, 255, 255),
thickness=-1,
line_type=cv2.LINE_AA,
bottomLeftOrigin=True)
cv2.imwrite('image.png', img)
此屏幕的输出是此处
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