讀圖片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.從文件中把圖片讀成數(shù)組

This function is only available if Python Imaging Library (PIL) is installed.該功能只在安裝了PIL情況下使用

?

Parameters:	fname?: str or file object The file name or file object to be read. flatten?:?bool, optional If True, flattens（扁平化）?the color layers into a single gray-scale（灰度）?layer. 將彩色層轉(zhuǎn)化成單個灰度層 mode?:?str, optional Mode to convert image to, e.g.?'RGB'. See the Notes for more details.
Returns:	imread?: ndarray（多維數(shù)組） The array obtained by reading the image.

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’.

調(diào)整圖片尺寸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功能將在1.2.0版本中，被skimage.transform.resize取代

Resize an image.調(diào)整圖片大小

This function is only available if Python Imaging Library (PIL) is installed.該功能只在安裝了PIL情況下使用

?

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，該函數(shù)使用bytescale在底層調(diào)整圖片，到(0, 255)全范圍內(nèi)。并在默認模式mode=None，計算二維圖片的32位（uint32）數(shù)據(jù)。

?

Parameters:

arr?: ndarray（多維數(shù)組） The array of image to be resized. size?:?int, float or tuple ?·??int - Percentage of current size. ?·??float - Fraction of current size. ?·??tuple - Size of the output image (height, width). interp?:?str, optional Interpolation to use for re-sizing (‘nearest’（最近鄰插值）, ‘lanczos’（lanczos蘭佐斯 interpolation）, ‘bilinear（雙線性插值）’, ‘bicubic’（雙三次插值）?or ‘cubic’（三次樣條插值）). mode?:?str, optional The PIL image mode (‘P’, ‘L’, etc.) to convert?arr?before resizing. If?mode=None?(the default), 2-D images will be treated like?mode='L', i.e. casting to long integer. For 3-D and 4-D arrays,?mode?will be set to'RGB'?and?'RGBA'?respectively.

Returns:

imresize?: ndarray The resized array of image.

See also

toimage

Implicitly used to convert?arr?according to?mode.

scipy.ndimage.zoom

More generic implementation that does not use PIL.

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