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
pip3 install opencv-python
pip3 install pillow
				
			
				
					# 代码
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()