读图片str or file object--ndarray

scipy.ndimage.imread(*args, **kwds)

imread is deprecated! imread is deprecated in SciPy 1.0.0, and will be removed in 1.2.0. Use imageio.imread instead.

在1.2.0版本用imageio.imread代替

Read an image from a file as an array.从文件中把图片读成数组

This function is only available if Python Imaging Library (PIL) is installed.该功能只在安装了PIL情况下使用

Notes

imread uses the Python Imaging Library (PIL) to read an image. The following notes are from the PIL documentation.

mode can be one of the following strings:

· ‘L’ (8-bit pixels, black and white)

· ‘P’ (8-bit pixels, mapped to any other mode using a color palette)

· ‘RGB’ (3x8-bit pixels, true color)

· ‘RGBA’ (4x8-bit pixels, true color with transparency mask)

· ‘CMYK’ (4x8-bit pixels, color separation)

· ‘YCbCr’ (3x8-bit pixels, color video format)

· ‘I’ (32-bit signed integer pixels)

· ‘F’ (32-bit floating point pixels)

PIL also provides limited support for a few special modes, including ‘LA’ (‘L’ with alpha), ‘RGBX’ (true color with padding) and ‘RGBa’ (true color with premultiplied alpha).

When translating a color image to black and white (mode ‘L’, ‘I’ or ‘F’), the library uses the ITU-R 601-2 luma transform:

L = R * 299/1000 + G * 587/1000 + B * 114/1000

When flatten is True, the image is converted using mode ‘F’. When mode is not None and flatten is True, the image is first converted according to mode, and the result is then flattened using mode ‘F’.

调整图片尺寸ndarray--ndarray

scipy.misc.imresize(*args, **kwds)

imresize is deprecated! imresize is deprecated in SciPy 1.0.0, and will be removed in 1.2.0. Use skimage.transform.resize instead.

imresize功能将在1.2.0版本中，被skimage.transform.resize取代

Resize an image.调整图片大小

This function is only available if Python Imaging Library (PIL) is installed.该功能只在安装了PIL情况下使用

Warning

This function uses bytescale under the hood to rescale images to use the full (0, 255) range if mode is one of None, 'L', 'P', 'l'. It will also cast data for 2-D images to uint32 for mode=None (which is the default).

如果是None, 'L', 'P', 'l模式之一，该函数使用bytescale在底层调整图片，到(0, 255)全范围内。并在默认模式mode=None，计算二维图片的32位（uint32）数据。

See also

toimage

Implicitly used to convert arr according to mode.

scipy.ndimage.zoom

More generic implementation that does not use PIL.