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4d9b0d5 e5ad646 4d9b0d5 e5ad646 4d9b0d5 e5ad646 4d9b0d5 e5ad646 4d9b0d5 7347923 4d9b0d5 e5ad646 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 | """示例场景图片管理 — 优先使用真实图片，缺失时生成合成图片
真实图片位于 test_imgs/complex/ 目录（通过 Git LFS 推送）
文本场景示例由合成生成（模拟合同文档）
"""
import os
from PIL import Image, ImageDraw, ImageFont, ImageFilter
def _get_font(size):
try:
return ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", size)
except Exception:
try:
return ImageFont.truetype("DejaVuSans.ttf", size)
except Exception:
return ImageFont.load_default()
def _generate_text_scene(path1, path2):
"""生成文本场景示例：模拟合同文档
两张图内容相同，但图2做了亮度调整和水平偏移，模拟不同角度拍摄
"""
w, h = 600, 800
for path, brightness, offset_x in [(path1, 0, 0), (path2, 30, 5)]:
img = Image.new('RGB', (w, h), (255, 255, 255))
draw = ImageDraw.Draw(img)
# 标题区域
draw.rectangle([50 + offset_x, 40, 550 + offset_x, 80], fill=(30, 30, 30))
# 正文行
for i in range(25):
y = 120 + i * 25
x_start = 50 + offset_x
x_end = 550 - (i % 5) * 20 + offset_x
draw.rectangle([x_start, y, x_end, y + 12], fill=(60, 60, 60))
# 模拟印章（红色圆形）
draw.ellipse([400 + offset_x, 650, 500 + offset_x, 750],
outline=(180, 30, 30), width=3)
draw.text((420 + offset_x, 680), "SEAL", fill=(180, 30, 30),
font=_get_font(20))
# 亮度调整
if brightness > 0:
import numpy as np
arr = np.array(img).astype(int) + brightness
arr = np.clip(arr, 0, 255).astype('uint8')
img = Image.fromarray(arr)
img.save(path, 'JPEG', quality=85)
def _scan_real_images(directory):
"""扫描目录中的真实图片文件"""
if not os.path.isdir(directory):
return []
exts = {'.jpg', '.jpeg', '.png', '.bmp', '.webp'}
imgs = []
for f in sorted(os.listdir(directory)):
if os.path.splitext(f)[1].lower() in exts:
imgs.append(os.path.join(directory, f))
return imgs
def ensure_demo_images(base_dir):
"""确保示例图片存在，优先使用真实图片
Args:
base_dir: 项目根目录
Returns:
dict: {'text': [path1, path2], 'complex': [path1, path2]} 或 None
"""
demo_dir = os.path.join(base_dir, 'test_imgs')
os.makedirs(demo_dir, exist_ok=True)
# === 复杂场景：优先使用真实图片 ===
complex_dir = os.path.join(demo_dir, 'complex')
real_complex = _scan_real_images(complex_dir)
if len(real_complex) >= 2:
complex_imgs = real_complex[:2]
else:
# Fallback：生成合成图片
c1 = os.path.join(demo_dir, 'demo_complex_1.jpg')
c2 = os.path.join(demo_dir, 'demo_complex_2.jpg')
if not os.path.exists(c1):
try:
_generate_complex_scene(c1, c2)
print("[示例] 已生成合成复杂场景图片")
except Exception as e:
print(f"[示例] 合成复杂场景生成失败: {e}")
return None
complex_imgs = [c1, c2]
# === 文本场景：优先使用真实图片 ===
text_dir = os.path.join(demo_dir, 'text')
real_text = _scan_real_images(text_dir)
if len(real_text) >= 2:
text_imgs = real_text[:2]
else:
# Fallback：生成合成图片
t1 = os.path.join(demo_dir, 'demo_text_1.jpg')
t2 = os.path.join(demo_dir, 'demo_text_2.jpg')
if not os.path.exists(t1):
try:
_generate_text_scene(t1, t2)
print("[示例] 已生成合成文本场景图片")
except Exception as e:
print(f"[示例] 合成文本场景生成失败: {e}")
return None
text_imgs = [t1, t2]
return {
'text': text_imgs,
'complex': complex_imgs,
}
def _generate_complex_scene(path1, path2):
"""生成复杂场景示例：模拟实景照片（fallback 用）"""
w, h = 600, 450
for path, shift_x, color_shift in [(path1, 0, 0), (path2, 15, 20)]:
img = Image.new('RGB', (w, h))
draw = ImageDraw.Draw(img)
# 天空渐变
for y in range(h // 2):
r = int(100 + y * 0.3 + color_shift)
g = int(150 + y * 0.2)
b = int(200 + y * 0.15)
draw.line([(0, y), (w, y)], fill=(min(r, 255), min(g, 255), min(b, 255)))
# 地面渐变
for y in range(h // 2, h):
r = int(80 + (y - h // 2) * 0.3)
g = int(120 + (y - h // 2) * 0.2)
b = int(60 + (y - h // 2) * 0.1)
draw.line([(0, y), (w, y)], fill=(min(r, 255), min(g, 255), min(b, 255)))
# 太阳
sun_x = 450 + shift_x
draw.ellipse([sun_x - 40, 50, sun_x + 40, 130],
fill=(255, 220, 100))
# 山脉
draw.polygon([(0, 225), (150 + shift_x, 150), (300 + shift_x, 200),
(450 + shift_x, 160), (600, 220), (600, 225)],
fill=(80, 100, 80))
# 建筑
draw.rectangle([100 + shift_x, 250, 200 + shift_x, 400],
fill=(120, 100, 90))
draw.rectangle([250 + shift_x, 280, 350 + shift_x, 400],
fill=(100, 110, 100))
draw.rectangle([400 + shift_x, 260, 480 + shift_x, 400],
fill=(90, 80, 100))
# 轻微模糊模拟不同焦距
if shift_x > 0:
img = img.filter(ImageFilter.GaussianBlur(radius=0.8))
img.save(path, 'JPEG', quality=85)
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