增加树莓相机图像的色彩饱和度

Question

我使用 raspberry pi 相机录制了一段视频，但视频的温度非常高，所以我使用以下代码来降低温度，但图像仍然看起来很苍白。图像中锥体的颜色看起来很暗淡。如何增加图像中的颜色强度/饱和度？或者我是否可以在重新编码时在相机中进行任何校准？。

import cv2
from PIL import Image
import numpy as np

kelvin_table = {
    1000: (255,56,0),
    1500: (255,109,0),
    2000: (255,137,18),
    2500: (255,161,72),
    3000: (255,180,107),
    3500: (255,196,137),
    4000: (255,209,163),
    4500: (255,219,186),
    5000: (255,228,206),
    5500: (255,236,224),
    6000: (255,243,239),
    6500: (255,249,253),
    7000: (245,243,255),
    7500: (235,238,255),
    8000: (227,233,255),
    8500: (220,229,255),
    9000: (214,225,255),
    9500: (208,222,255),
    10000: (204,219,255)}

alpha = 1.5# Contrast control (1.0-3.0)
beta = 20 # Brightness control (0-100)



def convert_temp(image, temp):
    r, g, b = kelvin_table[temp]
    matrix = ( r / 255.0, 0.0, 0.0, 0.0,
               0.0, g / 255.0, 0.0, 0.0,
               0.0, 0.0, b / 255.0, 0.0 )
    return image.convert('RGB', matrix)


cap = cv2.VideoCapture("./filename.mp4")


while True:

    ret, frame = cap.read()
    if ret:
        
        ###Color temp###
        frame = Image.fromarray(frame.astype('uint8'),'RGB')
        frame = convert_temp(frame, 3500)
        frame = np.asarray(frame)
       
        ###constrast and brightness####
        frame=cv2.addWeighted(frame,alpha,np.zeros(frame.shape, frame.dtype),0,beta)
        
        cv2.imshow("frame",frame)
    else:
        break


    if cv2.waitKey(60) == ord('q'):
        break

cap.release()
cv2.destroyAllWindows()