Python 在cv2中使用略读图像

我试图用skimage和scipy来提高灰度图像的图像质量，然后在cv2中使用它们。不幸的是，当我试图用cv2转换浏览图像时，我遇到了一个错误

图片：

输出：

Traceback (most recent call last):
  File "/home/artur/Desktop/test.py", line 25, in <module>
    img_gs = cv2.cvtColor(sharp_img, cv2.COLOR_BGR2GRAY)
cv2.error: OpenCV(3.4.3) /io/opencv/modules/imgproc/src/color.hpp:255: error: (-2:Unspecified error) in function 'cv::CvtHelper<VScn, VDcn, VDepth, sizePolicy>::CvtHelper(cv::InputArray, cv::OutputArray, int) [with VScn = cv::Set<3, 4>; VDcn = cv::Set<1>; VDepth = cv::Set<0, 2, 5>; cv::SizePolicy sizePolicy = (cv::SizePolicy)2u; cv::InputArray = const cv::_InputArray&; cv::OutputArray = const cv::_OutputArray&]'
> Invalid number of channels in input image:
>     'VScn::contains(scn)'
> where
>     'scn' is 1

Traceback (most recent call last):
  File "/home/artur/Desktop/test.py", line 23, in <module>
    sharp_img = skimage.img_as_ubyte(sharp_img)
  File "/home/artur/.local/lib/python3.6/site-packages/skimage/util/dtype.py", line 492, in img_as_ubyte
    return convert(image, np.uint8, force_copy)
  File "/home/artur/.local/lib/python3.6/site-packages/skimage/util/dtype.py", line 261, in convert
    raise ValueError("Images of type float must be between -1 and 1.")
ValueError: Images of type float must be between -1 and 1.

输出：

Traceback (most recent call last):
  File "/home/artur/Desktop/test.py", line 25, in <module>
    img_gs = cv2.cvtColor(sharp_img, cv2.COLOR_BGR2GRAY)
cv2.error: OpenCV(3.4.3) /io/opencv/modules/imgproc/src/color.hpp:255: error: (-2:Unspecified error) in function 'cv::CvtHelper<VScn, VDcn, VDepth, sizePolicy>::CvtHelper(cv::InputArray, cv::OutputArray, int) [with VScn = cv::Set<3, 4>; VDcn = cv::Set<1>; VDepth = cv::Set<0, 2, 5>; cv::SizePolicy sizePolicy = (cv::SizePolicy)2u; cv::InputArray = const cv::_InputArray&; cv::OutputArray = const cv::_OutputArray&]'
> Invalid number of channels in input image:
>     'VScn::contains(scn)'
> where
>     'scn' is 1

Traceback (most recent call last):
  File "/home/artur/Desktop/test.py", line 23, in <module>
    sharp_img = skimage.img_as_ubyte(sharp_img)
  File "/home/artur/.local/lib/python3.6/site-packages/skimage/util/dtype.py", line 492, in img_as_ubyte
    return convert(image, np.uint8, force_copy)
  File "/home/artur/.local/lib/python3.6/site-packages/skimage/util/dtype.py", line 261, in convert
    raise ValueError("Images of type float must be between -1 and 1.")
ValueError: Images of type float must be between -1 and 1.

---

我做错了什么？

您已经将图像转换为行中的灰度

img_int_gray = skimage.color.rgb2gray(img_int)

它在生产线上失败了

img_gs = cv2.cvtColor(sharp_img, cv2.COLOR_BGR2GRAY)

---

因为它需要一个3通道BGR映像。删除该行，您只需使用plt保存sharp\u img。imsave'sharp\u img.png'，sharp\u img，cmap='gray'

您已经将该行中的图像转换为灰度

img_int_gray = skimage.color.rgb2gray(img_int)

它在生产线上失败了

img_gs = cv2.cvtColor(sharp_img, cv2.COLOR_BGR2GRAY)

因为它需要一个3通道BGR映像。删除该行，您就可以使用plt保存sharp\u img了。imsave'sharp\u img.png'，sharp\u img，cmap='gray'