OpenCV NoneType对象没有属性形状 [英] OpenCV NoneType object has no attribute shape

问题描述

您好，我正在使用OpenCV开发Raspberry Pi.我想尝试一个在链接中跟踪球的教程 http://www.pyimagesearch.com/2015/09/14/ball-tracking-with-opencv/

Hello I'm working on Raspberry Pi with OpenCV. I want to try a tutorial which is ball tracking in link http://www.pyimagesearch.com/2015/09/14/ball-tracking-with-opencv/

但是当我编译它时，出现一个错误:'NoneType'对象没有属性'shape'.

But when I compile it, i get an error: 'NoneType' object has no attribute 'shape'.

我该怎么办?

推荐答案

这意味着应该返回图像的某个函数刚刚返回None，因此没有shape属性.尝试 打印img" 检查您的图片是None还是实际的numpy对象.

It means that somewhere a function which should return a image just returned None and therefore has no shape attribute. Try "print img" to check if your image is None or an actual numpy object.

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