六、PYTHON 库文件---PIL库

目录

1.常用引入方式

2.处理图片时的常用属性

3.剪切、合并图像函数

4.读取、创建图像函数

5.图形绘制函数

6.获取数据函数

7.序列操作函数

8.转换,保存图像函数

9.像素点,通道处理函数

10.增强、滤镜函数

11.几何变换函数

1.常用引入方式

>>> from PIL import Image

2.处理图片时的常用属性

PIL.Image.format
PIL.Image.mode
PIL.Image.palette 
PIL.Image.size

3.剪切、合并图像函数

Image.cpoy()
Image.crop (box)
Image.paste (im, box , mask)
Image.merge ("RGB", (b, g, r)

4.读取、创建图像函数

Image.open('ilename jpg')
Image.new(mode, size,color)
Image.open (StringIo.StringIO(buffer))
TarIO.TarIO("Im.tar","Im.ppm")
Image.fromarray(obj, mode)
Image.frombytes(mode, size, data)
Image.frombuffer (mode, size, data)
Image. verify()

5.图形绘制函数

ImageDraw. Draw.line (ixy, fill, width)
ImageDraw. Draw.arc(xy, start, end,fil1)
ImageDraw. Draw.chord(xy, start, end,fill, outline)
ImageDraw. Draw.bitmap (xy,bitmap, fi1l)
ImageDraw. Draw.ellipse(xy,fill, outline)
ImageDraw. Draw.point (xy,fil1)
ImageDraw. Draw.polygon (xy,fill, outline)
ImageDraw. Draw.rectangle(xy,fill, outline)
ImageDraw. Draw.text (xy,text, fill, font, anchor)
ImageDraw. Draw.textsize(text, font)

6.获取数据函数

Image.getdata ()
Image.getbands ()
Image. getpixel(xy)
Image.getcolors(max=256)
Image.getextrema()
Image.getbox ()
Image.histogram (mask)

7.序列操作函数

Image.seek (frame)
Image.tell()

8.转换,保存图像函数

Image.save( (title, command)')
Image.show (title, command)
Image. convert (mode, matrix, colors=256)
Image.thumbnail (size, resample=1)
Image. draft ()

9.像素点,通道处理函数

Image.point (lut, mode=None)
Image.eval (im,*args) Image. load()
Image.split()
Image.merge ()
Image.blend (im1,im2, alpha)
Image.composite(im1,im2, mask)
Image.alpha composite(im1,im2)

10.增强、滤镜函数

Image.filter (ImageFilter.fuction)
ImageEnhance.enhance (Factor)
ImageEnhance.color(im)
ImageEnhance.Contrast (im)
ImageEnhance.Brightness (im)
ImageEnhance.Sharpness (im)

11.几何变换函数

Image.resize(size)
Image.rotate(angle,resample=0,expand=0)
Image.transpose(method)
Image.transform(size,method, data, resample, fill)