遵循这些原则-
def crop_center(img,cropx,cropy): y,x = img.shape startx = x//2-(cropx//2) starty = y//2-(cropy//2) return img[starty:starty+cropy,startx:startx+cropx]
样品运行-
In [45]: imgOut[45]: array([[88, 93, 42, 25, 36, 14, 59, 46, 77, 13, 52, 58], [43, 47, 40, 48, 23, 74, 12, 33, 58, 93, 87, 87], [54, 75, 79, 21, 15, 44, 51, 68, 28, 94, 78, 48], [57, 46, 14, 98, 43, 76, 86, 56, 86, 88, 96, 49], [52, 83, 13, 18, 40, 33, 11, 87, 38, 74, 23, 88], [81, 28, 86, 89, 16, 28, 66, 67, 80, 23, 95, 98], [46, 30, 18, 31, 73, 15, 90, 77, 71, 57, 61, 78], [33, 58, 20, 11, 80, 25, 96, 80, 27, 40, 66, 92], [13, 59, 77, 53, 91, 16, 47, 79, 33, 78, 25, 66], [22, 80, 40, 24, 17, 85, 20, 70, 81, 68, 50, 80]])In [46]: crop_center(img,4,6)Out[46]: array([[15, 44, 51, 68], [43, 76, 86, 56], [40, 33, 11, 87], [16, 28, 66, 67], [73, 15, 90, 77], [80, 25, 96, 80]])
