Mercurial > ift6266

annotate data_generation/transformations/ttf2jpg.py @ 462:f59af1648d83

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cleaner le techreport
author Yoshua Bengio <bengioy@iro.umontreal.ca>
date Fri, 28 May 2010 08:49:36 -0600
parents 7800be7bce66
children
rev   line source
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1 #!/usr/bin/python
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2 # -*- coding: iso-8859-1 -*-
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4 '''
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5 Implementation of font image generator
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6 download fonts from http://www.dafont.com for exemple
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7
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8 Author: Guillaume Sicard
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9 '''
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11 import sys, os, fnmatch, random
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12 import Image, ImageFont, ImageDraw, numpy
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13 import cPickle
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15 class ttf2jpg():
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16 def __init__(self, font_file = ''):
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17 self.w = 32
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18 self.h = 32
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19 self.font_dir = '/Tmp/allfonts/'
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20 self.font_file = font_file
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21 self.image_dir = './images/'
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22 self.pattern = '*.ttf'
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23 self.char_list = []
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24 for i in range(0,10):
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25 self.char_list.append(chr(ord('0') + i) )
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26 for i in range(0,26):
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27 self.char_list.append(chr(ord('A') + i) )
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28 for i in range(0,26):
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29 self.char_list.append(chr(ord('a') + i) )
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30 f = open( self.font_dir + 'filelist.pkl' ,'r')
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31 self.font_files = cPickle.load(f)
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32 f.close()
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34 # get font name
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35 def get_settings_names(self):
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36 return [self.font_file]
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38 # save an image
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39 def save_image(self,array, filename = ''):
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40 image = (array * 255.0).astype('int')
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41 image = Image.fromarray(image).convert('L')
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42 if (filename != ''):
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43 image.save(filename)
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44 else:
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45 image.show()
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47 # set a random font for character generation
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48 def set_random_font(self):
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49 i = random.randint(0, len(self.font_files) - 1)
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50 self.font_file = self.font_dir + self.font_files[i]
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52 # return a picture array of "text" with font "font_file"
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53 def create_image(self, text):
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54 # create a w x h black picture, and a drawing space
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55 image = Image.new('L', (self.w, self.h), 'Black')
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56 draw = ImageDraw.Draw(image)
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57
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58 # load the font with the right size
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59 font = ImageFont.truetype(self.font_file, 28)
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60 d_w,d_h = draw.textsize(text, font=font)
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62 # write text and aligns it
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63 draw.text(((32 - d_w) / 2, ((32 - d_h) / 2)), text, font=font, fill='White')
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64
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65 image = numpy.asarray(image)
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66 image = (image / 255.0).astype(numpy.float32)
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67
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68 return image
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70 # write all the letters and numbers into pictures
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71 def process_font(self):
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72 for i in range(0, len(self.char_list) ):
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73 image = self.create_image(self.char_list[i])
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74 self.save_image(image, self.image_dir + self.char_list[i] + '-' + os.path.basename(self.font_file) + '.jpg')
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75 sys.stdout.write('.')
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76 sys.stdout.flush()
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77 return (len(self.char_list))
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79 # generate the character from the font_file and returns a numpy array
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80 def generate_image_from_char(self, character, font_file = ''):
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81 if (font_file != ''):
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82 self.font_file = font_file
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83
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84 return self.create_image(character)
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85
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86 # generate random character from random font file as a numpy array
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87 def generate_image(self):
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88 self.set_random_font()
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89 i = random.randint(0, len(self.char_list) - 1)
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90 return self.generate_image_from_char(self.char_list[i]), i
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92 # test method, create character images for all fonts in "font_dir" in dir "image_dir"
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93 def test(self):
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94 import time
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96 # look for ttf files
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97 files = os.listdir(self.font_dir)
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98 font_files = fnmatch.filter(files, self.pattern)
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99
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100 # create "image_dir" if it doesn't exist
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101 if not os.path.isdir(self.image_dir):
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102 os.mkdir(self.image_dir)
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103
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104 sys.stdout.write( str(len(font_files)) + ' fonts found, generating jpg images in folder ' + self.image_dir )
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105 sys.stdout.flush()
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107 # main loop
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108 t = time.time()
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109 n = 0
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111 for font_file in font_files:
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112 self.font_file = self.font_dir + font_file
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113 n += self.process_font()
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114 t = time.time() - t
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116 sys.stdout.write('\nall done!\n' + str(n) + ' images generated in ' + str(t) + 's (average : ' + str(1000 * t / n) + ' ms/im)\n')
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118 if __name__ == '__main__':
6d432a5010a2 Modified font generator script : module creation. Not fully compliant with testmod.py though (transformation != generation)
Guillaume Sicard <guitch21@gmail.com>
parents: 6
diff changeset
119
6d432a5010a2 Modified font generator script : module creation. Not fully compliant with testmod.py though (transformation != generation)
Guillaume Sicard <guitch21@gmail.com>
parents: 6
diff changeset
120 myttf2jpg = ttf2jpg()
43
05145f4fb609 Added : generation of random character with random font file from a specified folder
Guillaume Sicard <guitch21@gmail.com>
parents: 33
diff changeset
121 #myttf2jpg.test()
109
9c45e0071b52 Adapté le générateur d'images de fontes pour utiliser en amont du pipeline
boulanni <nicolas_boulanger@hotmail.com>
parents: 43
diff changeset
122 image, i = myttf2jpg.generate_image()
9c45e0071b52 Adapté le générateur d'images de fontes pour utiliser en amont du pipeline
boulanni <nicolas_boulanger@hotmail.com>
parents: 43
diff changeset
123 myttf2jpg.save_image(image, '')