有一段很多年前的太极拳教学演示视频，在大屏幕电视播放，视频画面实在让人看不下去，就想有什么办法提高视频画质，安装Topaz Video Enhance AI软件可以实现，但我还是喜欢自己折腾python，直接记录折腾笔记。
安装pillow和opencv-python
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| pip3 install opencv-python
pip3 install pillow
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代码
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| import cv2
from PIL import ImageEnhance, Image
import numpy as np
cap = cv2.VideoCapture('/Users/mymac/Movies/太极拳/24式整套 .mp4')
images = []
def img\_enhance(image):
# 亮度增强
enh\_bri = ImageEnhance.Brightness(image)
brightness = 1.2
image\_brightened = enh\_bri.enhance(brightness)
# image\_brightened.show()
# 色度增强
enh\_col = ImageEnhance.Color(image\_brightened)
color = 1.2
image\_colored = enh\_col.enhance(color)
# image\_colored.show()
# 对比度增强
enh\_con = ImageEnhance.Contrast(image\_colored)
contrast = 1.2
image\_contrasted = enh\_con.enhance(contrast)
# image\_contrasted.show()
# 锐度增强
enh\_sha = ImageEnhance.Sharpness(image\_contrasted)
sharpness = 1.2
image\_sharped = enh\_sha.enhance(sharpness)
# image\_sharped.show()
return image\_sharped
while (cap.isOpened()):
ret, frame = cap.read() # 读出来的frame是ndarray类型
image = Image.fromarray(np.uint8(frame)) # 转换成PIL可以处理的格式
images.append(image)
cv2.imshow('frame', frame)
if cv2.waitKey(25) & 0xFF == ord('q'):
break
# 同步进行增强画质处理，并显示
image\_enhanced = img\_enhance(image) # 调用编写的画质增强函数
cv2.imshow('frame\_enhanced', np.asarray(image\_enhanced)) # 显示的时候要把格式转换回来
if cv2.waitKey(25) & 0xFF == ord('q'):
break
cap.release()
cv2.destroyAllWindows()
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