python改变图像颜色_使用python+opencv更改图像像素颜色

# -*- coding: UTF-8 -*-

import cv2

import numpy as np

img=cv2.imread("pic.bmp")

# 将图像转换为HSV像素空间，因为HSV空间对颜色比较敏感

hsv=cv2.cvtColor(img,cv2.COLOR_BGR2HSV)

# 分别设置HSV颜色空间中，红色、黄色、蓝色、绿色的阈值

lower_red=np.array([0,43,46])

upper_red=np.array([10,255,255])

lower_yellow=np.array([26,43,46])

upper_yellow=np.array([34,255,255])

lower_blue=np.array([100,43,46])

upper_blue=np.array([124,255,255])

lower_green=np.array([35,43,46])

upper_green=np.array([77,255,255])

# 使用inRange函数获取图像中目标颜色的索引

mask_red=cv2.inRange(hsv,lower_red,upper_red)

mask_blue=cv2.inRange(hsv,lower_blue,upper_blue)

mask_green=cv2.inRange(hsv,lower_green,upper_green)

mask_yellow=cv2.inRange(hsv,lower_yellow,upper_yellow)

img_mask=np.copy(img)

color_1=[128,9,21]

color_2=[50,14,77]

color_3=[61,154,124]

color_4=[59,170,246]

# 给目标像素赋值

img_mask[mask_red!=0]=color_1

img_mask[mask_blue!=0]=color_2

img_mask[mask_green!=0]=color_3

img_mask[mask_yellow!=0]=color_4

https://blog..net/coldwindha/article/details/82080176

https://www.jianshu.com/p/931508698ad7

https://blog..net/weixin_41246832/article/details/84190879

# -*- coding: UTF-8 -*- import cv2 import numpy as np img=cv2.imread("pic.bmp") # 将图像转换为HSV像素空间，因为HSV空间对颜色比较敏感 hsv=cv2.cvtColor(img,cv2.COLOR_BGR2HSV) # 分别设置HSV颜色空间中，红色、黄色、蓝色、绿色的阈值 lower_red=np.array([0,43,46]) upper_red=np.array([10,255,255]) lower_yellow=np.array([26,43,46]) upper_yellow=np.array([34,255,255]) lower_blue=np.array([100,43,46]) upper_blue=np.array([124,255,255]) lower_green=np.array([35,43,46]) upper_green=np.array([77,255,255]) # 使用inRange函数获取图像中目标颜色的索引 mask_red=cv2.inRange(hsv,lower_red,upper_red) mask_blue=cv2.inRange(hsv,lower_blue,upper_blue) mask_green=cv2.inRange(hsv,lower_green,upper_green) mask_yellow=cv2.inRange(hsv,lower_yellow,upper_yellow) img_mask=np.copy(img) color_1=[128,9,21] color_2=[50,14,77] color_3=[61,154,124] color_4=[59,170,246] # 给目标像素赋值 img_mask[mask_red!=0]=color_1 img_mask[mask_blue!=0]=color_2 img_mask[mask_green!=0]=color_3 img_mask[mask_yellow!=0]=color_4 https://blog..net/coldwindha/article/details/82080176 https://www.jianshu.com/p/931508698ad7 https://blog..net/weixin_41246832/article/details/84190879

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