Python OpenCV 修改一寸照片底色，图像处理取经之旅第 20 天

import cv2import numpy as np# 该图片即为上图待换色的图片img = cv2.imread('photo.jpg')
def nothing(x):    pass
winName = 'getTrackbarPos'# 新建窗口cv2.namedWindow(winName, cv2.WINDOW_NORMAL)
cv2.createTrackbar('LowerbH', winName, 10, 255, nothing)cv2.createTrackbar('LowerbS', winName, 43, 255, nothing)cv2.createTrackbar('LowerbV', winName, 46, 255, nothing)
cv2.createTrackbar('UpperbH', winName, 180, 255, nothing)cv2.createTrackbar('UpperbS', winName, 255, 255, nothing)cv2.createTrackbar('UpperbV', winName, 255, 255, nothing)# 转换hsvhsv = cv2.cvtColor(img, cv2.COLOR_BGR2HSV)while(1):    # 函数cv2.getTrackbarPos()范围当前滑块对应的值    lowerbH = cv2.getTrackbarPos('LowerbH', winName)    LowerbS = cv2.getTrackbarPos('LowerbS', winName)    LowerbV = cv2.getTrackbarPos('LowerbV', winName)    upperbH = cv2.getTrackbarPos('UpperbH', winName)    upperbS = cv2.getTrackbarPos('UpperbS', winName)    upperbV = cv2.getTrackbarPos('UpperbV', winName)
    lower_red = np.array([lowerbH, LowerbS, LowerbV])    upper_red = np.array([upperbH, upperbS, upperbV])    mask = cv2.inRange(hsv, lower_red, upper_red)
    cv2.imshow(winName, mask)
    if cv2.waitKey(1) == ord('q'):        break
cv2.destroyAllWindows()

import cv2 as cvimport numpy as npdef change_clothes(src):    # 图像二值化    hsv = cv.cvtColor(src, cv.COLOR_BGR2HSV)    hsv1 = cv.cvtColor(hsv, cv.COLOR_HSV2BGR)    # cv.imshow("hsv1",hsv1)    # 使用 inRange()函数实现二值化    lowerb = np.array([0, 250, 219])    upperb = np.array([10, 255, 255])    dst = cv.inRange(hsv, lowerb, upperb)
    # 颜色直接替换    rows, cols, channels = src.shape    for i in range(rows):        for j in range(cols):            if dst[i, j] == 255:                # 此处替换颜色，为 BGR 通道                src[i, j] = (0, 255, 0)    cv.imshow('src', src)
if __name__ == "__main__":    src = cv.imread("./photo.jpg")    change_clothes(src)    cv.waitKey()    cv.destroyAllWindows()

 # 使用 inRange()函数实现二值化 lowerb = np.array([100, 48, 108]) upperb = np.array([130, 255, 255])