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# Generate sample data with 800x400 images of fonts in /System/Library/Fonts
# 50 images per font, 1 font per image
import os
from PIL import Image, ImageDraw, ImageFont
import nltk
from nltk.corpus import brown
import random
IMAGES_PER_FONT = 50
# Download the necessary data from nltk
nltk.download('brown')
# Note that this will only work on MacOS where this is the default font directory
font_dirs = ['/System/Library/Fonts/', '/System/Library/Fonts/Supplemental/']
output_dir = './font_images'
os.makedirs(output_dir, exist_ok=True)
all_brown_words = sorted(set(brown.words(categories='news')))
# This is a list of fonts that we want to use for our sample data
FONT_ALLOWLIST = ["Arial", "Avenir", "Courier", "Helvetica", "Georgia", "Tahoma", "Times New Roman", "Verdana"]
def wrap_text(text, line_length=10):
"""Wraps the provided text every 'line_length' words."""
words = text.split()
return "\n".join([" ".join(words[i:i+line_length]) for i in range(0, len(words), line_length)])
def random_prose_text(words, num_words=200):
"""Returns a random selection of 'num_words' words from the provided list of words."""
random_words = " ".join(random.sample(words, num_words))
return wrap_text(random_words)
def random_code_text(base_code, num_lines=15):
"""Returns a random selection of 'num_lines' lines from the provided code."""
lines = base_code.split("\n")
return "\n".join(random.sample(lines, min(num_lines, len(lines))))
for font_dir in font_dirs:
for font_file in os.listdir(font_dir):
if font_file.endswith('.ttf') or font_file.endswith('.ttc'):
font_path = os.path.join(font_dir, font_file)
font_name = font_file.split('.')[0]
if font_name not in FONT_ALLOWLIST:
continue
# Output the font name so we can see the progress
print(font_path, font_name)
if font_file.endswith('.ttc'):
# ttc fonts have multiple fonts in one file, so we need to specify which one we want
font = ImageFont.truetype(font_path, random.choice(range(32, 128)), index=0)
else:
# ttf fonts have only one font in the file
font_size = random.choice(range(32, 128)) # Increased minimum font size
font = ImageFont.truetype(font_path, font_size)
# Counter for the image filename
j = 0
for i in range(IMAGES_PER_FONT): # Generate 50 images per font - reduced to 10 for now to make things faster
prose_sample = random_prose_text(all_brown_words)
for text in [prose_sample]:
img = Image.new('RGB', (800, 400), color="white") # Canvas size
draw = ImageDraw.Draw(img)
# Random offsets, but ensuring that text isn't too far off the canvas
offset_x = random.randint(-20, 10)
offset_y = random.randint(-20, 10)
draw.text((offset_x, offset_y), text, fill="black", font=font)
j += 1
output_file = os.path.join(output_dir, f"{font_name}_{j}.png")
img.save(output_file)
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