通過直方圖反向投影，根據目標衣服顏色的特征來進行定位
cv2.calcHist([roi_hsv],[0,1],None,[32,48],[0,180,0,256])其中[32,48]表示bin的個數，可以修改，當然范圍越小越精確
import cv2
import numpy as np
from matplotlib import pyplot as pltdef back_projection():sample = cv2.imread(r"G:\Juptyer_workspace\study\opencv\opencv3\yg1.jpg")target = cv2.imread(r"G:\Juptyer_workspace\study\opencv\opencv3\yg.jpg")roi_hsv = cv2.cvtColor(sample,cv2.COLOR_BGR2HSV)target_hsv = cv2.cvtColor(target,cv2.COLOR_BGR2HSV)cv2.imshow("sample",sample)cv2.imshow("target",target)roiHist = cv2.calcHist([roi_hsv],[0,1],None,[32,48],[0,180,0,256])cv2.normalize(roiHist,roiHist,0,255,cv2.NORM_MINMAX)dst = cv2.calcBackProject([target_hsv],[0,1],roiHist,[0,180,0,256],1)cv2.imshow("back_projection",dst)back_projection()
cv2.waitKey(0)
cv2.destroyAllWindows()
效果圖如下：
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