python图像处理接口

来源：互联网发布：知乎杭州电子科技大学编辑：程序博客网时间：2024/06/01 18:56
#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
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