img[y:y+h,x:x+w]这个是什么意思？

Question

img = cv2.imread(os.path.join(sample_dir,people_dir,people_img))
corp = img[y:y+h,x:x+w]
cv2.imwrite(os.path.join(facedata_dir,people_img),corp)

Answer 1

python数组分片，取[y~y+h,x~x+w]这个下标范围，构成一个新数组