1 HSV上下限

颜色的HSV上下限如下表：

2 追踪单个颜色

import cv2 as cvimport numpy as npcap = cv.VideoCapture(0)lower_color = np.array([0, 43, 46])upper_color = np.array([10, 255, 255])while cap.isOpened(): # 读取帧 _, frame = cap.read() # 转换颜色空间 BGR 到 HSV hsv = cv.cvtColor(frame, cv.COLOR_BGR2HSV) # 设置HSV的阈值使得只取某色 mask = cv.inRange(hsv, lower_color, upper_color) # 将掩膜和图像逐像素相加 res = cv.bitwise_and(frame, frame, mask=mask) # cv.imshow('frame', frame) cv.imshow('mask', mask) cv.imshow('res', res) if cv.waitKey(1) == ord("q"): breakcv.destroyAllWindows()

结果如下：

2 追踪多个颜色

import cv2 as cvimport numpy as npcap = cv.VideoCapture(0)lower_red = np.array([0, 43, 46])upper_red = np.array([10, 255, 255])lower_blue = np.array([100, 43, 46])upper_blue = np.array([124, 255, 255])while cap.isOpened(): _, frame = cap.read() hsv = cv.cvtColor(frame, cv.COLOR_BGR2HSV) mask1 = cv.inRange(hsv, lower_red, upper_red) mask2 = cv.inRange(hsv, lower_blue, upper_blue) mask = mask1 + mask2 res = cv.bitwise_and(frame, frame, mask=mask) # cv.imshow('frame', frame) cv.imshow('mask', mask) cv.imshow('res', res) if cv.waitKey(1) == ord("q"): breakcv.destroyAllWindows()

参考文献：

【1】OpenCV中HSV颜色模型及颜色分量范围

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