python图像处理接口

#http://pillow.readthedocs.org/en/latest/index.html
#官方接口说明
# #coding:utf-8
# import os, sys
# from PIL import Image
# sys.argv.append("图片路径")#图片路径
'''Image 类'''
# im = Image.open(sys.argv[1])
# print(im.format,im.size,im.mode)#format定义格式，size表示宽X高，mode表示模式
# # L灰度，RGB真彩，CMYK pre-press
#
# size = (32,32)
# im.thumbnail(size)#转换大小
# im.save("/home/zyh/picture/the.jpg")#将打开的文件格式转换成jpg
#

'''读写图片'''
# #将图片转换成jpg格式
#
# for infile in sys.argv[1:]:#在终端运行时，加入的文件参数
#     f,e = os.path.splitext(infile)#分离文件名与扩展名；默认返回(fname,fextension)元组，可做分片操作
#     outfile = f +".jpg"
#     # print e 输出图片格式
#     if infile != outfile:
#         try:
#             Image.open(infile).save(outfile)
#         except IOError:
#             print("can't convert", infile)

# #创建缩略图
#
# size = (16,16)
# for infile in sys.argv[1:]:
#     outfile = os.path.splitext(infile)[0]+".thumbnail"
#     if infile != outfile:
#         try:
#             im = Image.open(infile)
#             im.thumbnail(size)
#             im.save(outfile,"JPEG")
#         except IOError:
#             print("can't creat thumbnail for",infile)

# #确定图片属性
# for infile in sys.argv[1:]:
#     try :
#          # with Image.open(infile) as im:#不知道为什么不对啊
#         im = Image.open(infile)
#         print(infile,im.format,"%d x %d"%im.size,im.mode)
#     except IOError:
#         pass

'''从图片中裁剪，粘贴，合并图片'''
# for infile in sys.argv[1:]:
#     try :
#         im = Image.open(infile)
#         outfile = os.path.splitext(infile)[0]
#
#         #从图片中复制子图
#
#         # box = im.copy()#复制图片
#         box = (im.size[0]/3,im.size[1]/3,im.size[0]*2/3,im.size[1]*2/3)#左上角为原点,left ,upper,right,lower
#         region = im.crop(box)#从图片中提取子矩阵，
#
#         #处理子图，粘贴回原图
#
#         region = region.transpose(Image.ROTATE_180)#旋转180度
#         im.paste(region,box)#将子图paste(粘贴)回原图，子图的region和原图吻合，
#         im.save(outfile+"box.jpeg")
#     except IOError:
#         pass

# #rolling an Image
#
# def roll (image,delta):
#     '''Roll an image sideways'''
#     image = image.copy()
#     xsize,ysize = image.size
#     delta = delta%xsize
#     if delta ==0 : return image
#
#     part1 = image.crop((0,0,delta,ysize))
#     part2 = image.crop((delta,0,xsize,ysize))
#     image.paste(part2,(0,0,xsize-delta,ysize))
#     image.paste(part1,(xsize-delta,0,xsize,ysize))
#
#     return image
#
# for infile in sys.argv[1:]:
#     try :
#         im = Image.open(infile)
#         outfile = os.path.splitext(infile)[0]
#
#         #从图片中复制子图
#         roll(im.copy(),300).save(outfile+"roll.jpeg")
#         #im.save(outfile+"box.jpeg")
#     except IOError:
#         pass


    # #分离合并通道
# for infile in sys.argv[1:]:
#     try :
#         im = Image.open(infile)
#         outfile = os.path.splitext(infile)[0]
#         r,g,b= im.split()#对于单通道图片，split()返回图像本身
#         im = Image.merge("RGB",(b,r,g))#转换（RGB）的位置
#         im.save(outfile+"tongdao.jpeg")
#         #im.save(outfile+"box.jpeg")
#     except IOError:
#         pass
#
''' 几何变换'''
# for infile in sys.argv[1:]:
#     try :
#         im = Image.open(infile)
#         outfile = os.path.splitext(infile)[0]
#         #简单的几何变换
#
#         out = im.resize((64,64))# 改变大小
#         out = im.rotate(30) # 顺时针角度表示
#         out.save(outfile+"jihe简单.jpeg")
#         #置换图像
#         out = im.transpose(Image.FLIP_LEFT_RIGHT) #左右调换
#         out.save(outfile+"jiheLR.jpeg")
#         out = im.transpose(Image.FLIP_TOP_BOTTOM) #上下调换
#         out.save(outfile+"jiheTB.jpeg")
#         out = im.transpose(Image.ROTATE_90) #右旋90,可以用rotate替换
#         out.save(outfile+"jiheR45.jpeg")
#         out = im.transpose(Image.ROTATE_180)
#         out.save(outfile+"jiheR180.jpeg")
#         out = im.transpose(Image.ROTATE_270)
#
#         out.save(outfile+"jiheR270.jpeg")
#         #im.save(outfile+"box.jpeg")
#     except IOError:
#         pass

'''模式转换'''
#
# for infile in sys.argv[1:]:
#     try :
#         im = Image.open(infile)
#         outfile = os.path.splitext(infile)[0]
#         #简单的几何变换
#         out = im.convert("L")
#         out.save(outfile+"convertL.jpeg")
#     except IOError:
#         pass

'''图像增强()'''
# for infile in sys.argv[1:]:
#     try :
#         im = Image.open(infile)
#         outfile = os.path.splitext(infile)[0]
#         #简单的几何变换
#
#         from PIL import ImageFilter
#         out = im.filter(ImageFilter.DETAIL)
#         out.save(outfile+"filter.jpeg")
#     except IOError:
#         pass

'''像素点处理'''

# for infile in sys.argv[1:]:
#     try :
#         im = Image.open(infile)
#         outfile = os.path.splitext(infile)[0]
#
#         #像素点变换
#
#         out = im.point(lambda i: i * 0.3)#每个像素乘0.3，通过point和paste选择性的处理图片的某一区域
#         out.save(outfile+"point.jpeg")
#
#         #处理单独通道
#
#         source = im.split()
#         R,G,B = 0,1,2
#
#         # select regions where red is less than 100
#         mask = source[R].point(lambda i: i<100 and 255)
#         #mask参数用法：当为0时，保留当前值，255为使用paste进来的值，中间则用于transparency效果
#
#         # process the green band
#         out = source[G].point(lambda i: i*10)
#
#         # paste the processed band back, but only where red was < 100
#         source[G].paste(out,None,mask)
#
#         im=Image.merge(im.mode,source)
#         im.save(outfile+"tongdao.jpeg")
#     except IOError:
#         pass