解决“cv2.error:Unsupported depth of input image”问题

问题描述

在执行下面代码的时候

# Read image
img = cv2.imread("imori.jpg").astype(np.float)
#img = cv2.imread("imori.jpg").astype(np.float32)

# grayscale
#gray = BGR2GRAY(img)
gray=cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)

运行报错：

 gray=cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
cv2.error: OpenCV(4.1.1) /io/opencv/modules/imgproc/src/color.simd_helpers.hpp:94: error: (-2:Unspecified error) in function 'cv::impl::{anonymous}::CvtHelper::CvtHelper(cv::InputArray, cv::OutputArray, int) [with VScn = cv::impl::{anonymous}::Set<3, 4>; VDcn = cv::impl::{anonymous}::Set<1>; VDepth = cv::impl::{anonymous}::Set<0, 2, 5>; cv::impl::{anonymous}::SizePolicy sizePolicy = (cv::impl::::SizePolicy)2u; cv::InputArray = const cv::_InputArray&; cv::OutputArray = const cv::_OutputArray&]'
> Unsupported depth of input image:
>     'VDepth::contains(depth)'
> where
>     'depth' is 6 (CV_64F)

 

解决方法

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。

改成np.float32即可