OpenCV python 提取图像内的三色_opencv提取图片的蓝绿红hsv值

OpenCV python 提取图像内的三色

原图 [opencv.jpg]

import cv2
import numpy as np


def main():

    # 1.导入图片
    img_src = cv2.imread("opencv.jpg")
    img_hsv = cv2.cvtColor(img_src, cv2.COLOR_BGR2HSV)

    # 2.指定蓝色范围
    blue_min = np.array([110, 50, 50])
    blue_max = np.array([130, 255, 255])

    # 3.锁定蓝色区域
    blue_mask = cv2.inRange(img_hsv, blue_min, blue_max)
    img_blue = cv2.bitwise_and(img_src, img_src, mask=blue_mask)

    # 4.指定红色范围
    red_min = np.array([0, 50, 50])
    red_max = np.array([30, 255, 255])

    # 5.锁定红色区域
    red_mask = cv2.inRange(img_hsv, red_min, red_max)
    img_red = cv2.bitwise_and(img_src, img_src, mask=red_mask)

    # 6.指定绿色范围
    green_min = np.array([50, 50, 50])
    green_max = np.array([70, 255, 255])

    # 7.锁定绿色区域
    green_mask = cv2.inRange(img_hsv, green_min, green_max)
    img_green = cv2.bitwise_and(img_src, img_src, mask=green_mask)

    # 8.显示结果
    cv2.imshow("img_src", img_src)
    cv2.imshow("img_blue", img_blue)
    cv2.imshow("img_red", img_red)
    cv2.imshow("img_green", img_green)

    cv2.waitKey()
    cv2.destroyAllWindows()


if __name__ == '__main__':
    main()

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结果图片[B]

结果图片[R]

结果图片[G]