Simple usage of python PIL module for image processing

Simple usage of python PIL module for image processing

This article describes how to use the PIL module of python to process images. It involves some techniques related to image sharpening, straight line drawing, and elliptical drawing using the PIL module of Python, for more information, see

This article describes how to use the PIL module of python to process images. Share it with you for your reference. The specific implementation method is as follows:

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#! /Usr/bin/env python # Encoding: UTF-8 Import Image Class myimg: Def _ init _ (self, open_file, save_file ): Self. img = Image. open (open_file) Self. save_file = save_file Def Change_Size (self, percent = 100, height = None, width = None ): ''''' Percent: the percentage is used to determine the size. Height, width: determines the size based on the specified height and width. ''' If not (height and width ): Width, height = self. img. size New_img = self. img. resize (width * percent/100, height * percent/100), Image. BILINEAR) New_img.save (self. save_file) Def Rotation (self, angle ): ''''' Angle: degrees of Rotation ''' Rot_img = self. img. rotate (angle) # rotate Rot_img.save (self. save_file) Def Save_as (self, filename ): ''''' Filename: Save As image format, directly according to the suffix ''' Self. img. save (filename) Def Draw_Something (self ): ''''' Use ImageDraw to draw images ''' Import ImageDraw Draw = ImageDraw. Draw (self. img) Width, height = self. img. size Draw. line (255), (width-1, height-1), fill =) # draw a straight line Draw. line (0, height-1), (width-1, 0), fill = 255) Draw. arc (0,360, width-1, height-1), 255, fill =) # draw an elliptic Self. img. save (self. save_file) Def Enhance_Something (self ): ''''' Use ImageEnhance to enhance the image effect ''' Import ImageEnhance Brightness = ImageEnhance. Brightness (self. img) Bright_img = brightness. enhance (2.0) # brightness Enhancement Bright_img.save (self. save_file) Sharpness = ImageEnhance. Sharpness (self. img) Sharp_img = sharpness. enhance (7.0) # sharpness Enhancement Sharp_img.save (self. save_file) Contrast = ImageEnhance. Contrast (self. img) # contrast enhancement Contrast_img = contrast. enhance (2.0) Contrast_img.save (self. save_file) If _ name _ = "_ main __": File_name = r "D: \ test.png" Save_file = r "D: \ save.png" Saveas_file = r "D: \ save_as.bmp" Oimg = myimg (file_name, save_file) Oimg. Change_Size (30) Oimg. Rotation (45) Oimg. Save_as (saveas_file) Oimg. Draw_Something () Oimg. Enhance_Something ()

Source image:

Processed drawing: (sharpened)

PS: In addition, there is another commonly used module, the image module.