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mmcv.image.rgb2gray

mmcv.image.rgb2gray(img: ndarray, keepdim: bool = False) → ndarray[source]

Convert a RGB image to grayscale image.

Parameters:

  • img (ndarray) – The input image.

  • keepdim (bool) – If False (by default), then return the grayscale image with 2 dims, otherwise 3 dims.

Returns:

The converted grayscale image.

Return type:

ndarray