cv2.cvtColor Unsupported depth of input image

源代码

import cv2
import numpy as ny
img = ny.zeros( ( 3 , 3 ))

img=cv2.cvtColor(img,cv2.COLOR_BGR2RGB)

print(img)

　　

opencv只支持float32的图像显示和操作，然后float64是numpy的数据类型，opencv中不支持。

改为

import cv2
import numpy as ny
img = ny.zeros( ( 3 , 3 ),ny.float32)

img=cv2.cvtColor(img,cv2.COLOR_BGR2RGB)

print(img)