image_novice 0.1.3

描述

image_novice是Python图像库(PIL)的一个简单包装器，适用于初学者。它允许轻松加载、操作和保存图像文件。

注意：此模块使用笛卡尔坐标系！

示例

>>> import image_novice as novice         # special submodule for beginners

>>> picture = novice.open('sample.png')   # create a picture object from a file
>>> print picture.format                  # pictures know their format...
'png'
>>> print picture.path                    # ...and where they came from...
'/Users/example/sample.png'
>>> print picture.size                    # ...and their size
(665, 500)
>>> print picture.width                   # 'width' and 'height' also exposed
665
>>> picture.size = (200, 250)             # changing size automatically resizes
>>> for pixel in picture:                 # can iterate over pixels
>>> ... if ((pixel.red > 128) and         # pixels have RGB (values are 0-255)...
>>> ...     (pixel.x < picture.width)):   # ...and know where they are
>>> ...     pixel.red /= 2                # pixel is an alias into the picture
>>> ...
>>> print picture.modified                # pictures know if their pixels are dirty
True
>>> print picture.path                    # picture no longer corresponds to file
None
>>> picture[0:20, 0:20] = (0, 0, 0)       # overwrite lower-left rectangle with black
>>> picture.save('sample-bluegreen.jpg')  # guess file type from suffix
>>> print picture.path                    # picture now corresponds to file
'/Users/example/sample-bluegreen.jpg'
>>> print picture.format                  # ...has a different format
jpeg
>>> print picture.modified                # and is now in sync
False