# -*- coding: utf-8 -*- import os import time from PIL import Image,ImageChops,ImageEnhance def image_reversal(img,savefilepath,save_filename): """ 图像翻转""" lr=img.transpose(Image.FLIP_LEFT_RIGHT) # 左右翻转 ud=img.transpose(Image.FLIP_TOP_BOTTOM) # 上下翻转 lr.save(savefilepath+save_filename) ud.save(savefilepath+save_filename) def image_rotation(img,savefilepath,save_filename): """图像旋转""" out1=img.rotate(40) # 旋转20度 out2=img.rotate(30) # 旋转30度 out1.save(savefilepath+save_filename) out2.save(savefilepath+save_filename) def image_translation(img,savefilepath,save_filename): """图像平移""" out3=ImageChops.offset(img,20,0) # 只沿X轴平移 out4=ImageChops.offset(img,0,20) # 只沿y轴平移 out3.save(savefilepath+save_filename) out4.save(savefilepath+save_filename) def image_brightness(img,savefilepath,save_filename): """亮度调整""" bri=ImageEnhance.Brightness(img) bri_img1=bri.enhance(0.8) # 小于1为减弱 bri_img2=bri.enhance(1.2) # 大于1为增强 bri_img1.save(savefilepath+save_filename) bri_img2.save(savefilepath+save_filename) def image_chroma(img,savefilepath,save_filename): """色度调整""" col = ImageEnhance.Color(img) col_img1 = col.enhance(0.7) # 色度减弱 col_img2 = col.enhance(1.3) # 色度增强 col_img1.save(savefilepath+save_filename) col_img2.save(savefilepath+save_filename) def image_contrast(img,savefilepath,save_filename): """对比度调整""" con=ImageEnhance.Contrast(img) con_img1=con.enhance(0.7) # 对比度减弱 con_img2=con.enhance(1.3) # 对比度增强 con_img1.save(savefilepath+save_filename) con_img2.save(savefilepath+save_filename) def image_sharpness(img,savefilepath,save_filename): """锐度调整""" sha = ImageEnhance.Sharpness(img) sha_img1 = sha.enhance(0.5) # 锐度减弱 sha_img2 = sha.enhance(1.5) # 锐度增强 sha_img1.save(savefilepath+save_filename) sha_img2.save(savefilepath+save_filename) # 定义扩充图片函数 def image_expansion(filepath,savefilepath,save_prefix): """ :param filepath: 图片路径 :param savefilepath: 扩充保存图片路径 :param save_prefix: 图片前缀 :return: 图片扩充数据集 """ i = 1 for parent, dirnames, filenames in os.walk(filepath): for filename in filenames: image_path=filepath+filename print('正在扩充图片:%s' %filename) try: img=Image.open(image_path) if img.mode == "P": img = img.convert('RGB') image_reversal(img,savefilepath,save_filename=save_prefix + str(i) + '.jpg') i += 1 image_rotation(img,savefilepath,save_filename=save_prefix+str(i)+'.jpg') i += 1 image_translation(img,savefilepath,save_filename=save_prefix+str(i)+'.jpg') i += 1 # image_chroma(img,savefilepath,save_filename=save_prefix+str(i)+'.jpg') # i += 1 # image_contrast(img,savefilepath,save_filename=save_prefix+str(i)+'.jpg') # i += 1 # image_sharpness(img,savefilepath,save_filename=save_prefix+str(i)+'.jpg') # i += 1 except Exception as e: print(e) pass if __name__ == '__main__': # 设置图片路径 filepath = 'C:/Picture_Train/ju/' # 设置扩充保存图片路径 savefilepath ='C:/Picture_Train/new_ju/' # 设置前缀图片名称 save_prefix='ticket_0_' time1 = time.time() image_expansion(filepath, savefilepath,save_prefix) time2 = time.time() print('总共耗时:' + str(time2 - time1) + 's')