File size: 35,350 Bytes
5f7092b |
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 |
"""
XGuard Gradio 应用 - 图片与文本风险检测
双模型流水线:
1. Qwen3-VL: 视觉语言模型,用于图片内容描述(支持在线 API / 本地推理)
2. YuFeng-XGuard-Reason-0.6B: 安全检测模型,用于风险归因分析
启动方式:
python app.py
"""
import os
import re
import time
from PIL import Image as PILImage
import gradio as gr
from config import load_config
from model import VisionLanguageModel, XGuardModel
# ============================================================
# 全局变量
# ============================================================
config = load_config()
vl_model: VisionLanguageModel = None
xguard_model: XGuardModel = None
# 视觉模型模式标签
VL_MODE_API = "在线 API (DashScope)"
VL_MODE_LOCAL = "本地模型"
# ============================================================
# 风险类别中文映射 (基于 XGuard 内置安全分类体系)
# 9 大风险维度, 28 个细分类别
# 参考: https://www.modelscope.cn/models/Alibaba-AAIG/YuFeng-XGuard-Reason-8B
# ============================================================
RISK_NAME_ZH = {
"Safe-Safe": "安全",
# 犯罪与违法活动
"Crimes and Illegal Activities-Pornographic Contraband": "犯罪与违法活动 - 色情违禁",
"Crimes and Illegal Activities-Drug Crimes": "犯罪与违法活动 - 毒品犯罪",
"Crimes and Illegal Activities-Dangerous Weapons": "犯罪与违法活动 - 危险武器",
"Crimes and Illegal Activities-Property Infringement": "犯罪与违法活动 - 财产侵害",
"Crimes and Illegal Activities-Economic Crimes": "犯罪与违法活动 - 经济犯罪",
# 仇恨言论
"Hate Speech-Abusive Curses": "仇恨言论 - 辱骂诅咒",
"Hate Speech-Defamation": "仇恨言论 - 诽谤造谣",
"Hate Speech-Threats and Intimidation": "仇恨言论 - 威胁恐吓",
"Hate Speech-Cyberbullying": "仇恨言论 - 网络霸凌",
# 身心健康
"Physical and Mental Health-Physical Health": "身心健康 - 身体健康",
"Physical and Mental Health-Mental Health": "身心健康 - 心理健康",
# 伦理道德
"Ethics and Morality-Social Ethics": "伦理道德 - 社会伦理",
"Ethics and Morality-Science Ethics": "伦理道德 - 科学伦理",
# 数据隐私
"Data Privacy-Personal Privacy": "数据隐私 - 个人隐私",
"Data Privacy-Commercial Secret": "数据隐私 - 商业秘密",
# 网络安全
"Cybersecurity-Access Control": "网络安全 - 访问控制",
"Cybersecurity-Malicious Code": "网络安全 - 恶意代码",
"Cybersecurity-Hacker Attack": "网络安全 - 黑客攻击",
"Cybersecurity-Physical Security": "网络安全 - 物理安全",
# 极端主义
"Extremism-Violent Terrorist Activities": "极端主义 - 暴力恐怖活动",
"Extremism-Social Disruption": "极端主义 - 社会破坏",
"Extremism-Extremist Ideological Trends": "极端主义 - 极端思想",
# 不当建议
"Inappropriate Suggestions-Finance": "不当建议 - 金融",
"Inappropriate Suggestions-Medicine": "不当建议 - 医疗",
"Inappropriate Suggestions-Law": "不当建议 - 法律",
# 涉及未成年人
"Risks Involving Minors-Corruption of Minors": "未成年人风险 - 腐蚀未成年人",
"Risks Involving Minors-Minor Abuse and Exploitation": "未成年人风险 - 虐待与剥削",
"Risks Involving Minors-Minor Delinquency": "未成年人风险 - 未成年人犯罪",
}
# 风险等级配置: 标签、颜色、背景色、边框色
RISK_LEVELS = {
"high": {"label": "高风险", "color": "#dc2626", "bg": "#fef2f2", "border": "#fca5a5"},
"medium": {"label": "中风险", "color": "#d97706", "bg": "#fffbeb", "border": "#fcd34d"},
"low": {"label": "低风险", "color": "#ca8a04", "bg": "#fefce8", "border": "#fde047"},
"safe": {"label": "安全", "color": "#16a34a", "bg": "#f0fdf4", "border": "#86efac"},
}
# ============================================================
# 图文检测场景预设提示词
# 针对不同内容审核场景,引导 VL 模型聚焦关键风险要素
# ============================================================
SCENE_PROMPTS = {
"通用图文检测(默认)": "",
"社交表情包/梗图": (
"这是一张社交平台图片(可能是表情包、梗图或配文图片)。"
"请仅提取事实内容,不要做风险判断:\n\n"
"【图片文字】完整提取图中所有文字、对话内容、标语口号,保持原文。\n\n"
"【视觉元素】描述人物表情、手势、动作、场景布置、符号标志等。\n\n"
"【内容类型】判断这是什么类型的社交图片(表情包/梗图/配文图等)。"
),
"电商商品图文": (
"这是一张电商平台商品图片。"
"请仅提取事实内容,不要做合规判断:\n\n"
"【商品文字】提取图中所有文字,包括商品名称、功效宣称、价格信息、"
"促销语、成分说明等,保持原文。\n\n"
"【商品视觉】描述商品外观、包装设计、使用场景展示等视觉内容。\n\n"
"【内容类型】判断商品类别(如食品、药品、化妆品、电子产品等)。"
),
"聊天记录截图": (
"这是一张聊天记录截图。"
"请仅提取事实内容,不要做风险判断或总结:\n\n"
"【对话内容】完整提取截图中的所有对话文字,"
"标注发送者身份(如'对方'、'用户'),保持原文。\n\n"
),
"广告/营销内容": (
"这是一张广告或营销推广图片。"
"请仅提取事实内容,不要做合规判断:\n\n"
"【广告文案】完整提取图中的广告语、宣传标语、联系方式、"
"二维码信息等文字内容,保持原文。\n\n"
"【内容类型】判断广告类型(如医疗广告、金融广告、招聘广告等)。"
),
}
# 场景名称列表(保持顺序)
SCENE_CHOICES = list(SCENE_PROMPTS.keys())
# ============================================================
# VL 输出内容提取 — 剥离分析性段落,仅保留原始内容
# ============================================================
# 需要移除的分析性段落标题(这些段落是 VL 模型的主观分析/风险判断,
# 如果直接喂给 XGuard,XGuard 会将其理解为"安全的分析报告"而非"待检测的风险内容")
_ANALYSIS_SECTIONS = {
'图文关系', '对话主题', '风险要素', '合规风险',
'综合判定', '表达意图', '宣传手法',
}
def extract_core_content(description: str) -> str:
"""
从 VL 模型的结构化描述中提取原始内容,用于 XGuard 风险检测。
核心目标:去除所有"报告框架",让 XGuard 直接看到原始文本内容。
XGuard 是 AI 对话安全护栏模型,它会判断"用户/AI 说了什么"是否有害。
如果输入像一份"关于风险内容的分析报告",XGuard 会认为这是安全的分析行为。
因此必须去掉三层报告框架:
1. 分析性段落(【对话主题】【风险要素】等)→ VL 的主观判断
2. 结构标记(【对话内容】【界面信息】等标题)→ 报告格式
3. 元数据(发送者标签、UI 描述)→ 第三方转述语气
处理后 XGuard 看到的应该是接近原始的文本内容。
"""
if not description or not description.strip():
return description
# 使用【...】标记分割段落
parts = re.split(r'(【[^】]+】)', description)
# parts 格式: [前导文本, 【标题1】, 内容1, 【标题2】, 内容2, ...]
if len(parts) < 3:
# 没有结构化标记,返回原文
return description
# 需要保留内容的段落(原始文字/视觉描述)
_CONTENT_SECTIONS = {
'图片文字', '对话内容', '视觉内容', '视觉元素',
'商品文字', '商品视觉', '广告文案', '视觉设计',
}
# 需要丢弃的段落(分析判断 + 纯元数据)
_DROP_SECTIONS = _ANALYSIS_SECTIONS | {'界面信息', '内容类型'}
content_parts = []
# 前导文本
leading = parts[0].strip()
if leading:
content_parts.append(leading)
# 遍历段落:只保留内容提取类段落的正文(不保留标题)
i = 1
while i < len(parts):
title = parts[i].strip('【】 ')
body = parts[i + 1].strip() if i + 1 < len(parts) else ""
i += 2
if not body:
continue
if title in _DROP_SECTIONS:
continue
if title in _CONTENT_SECTIONS or title not in _DROP_SECTIONS:
content_parts.append(body)
if not content_parts:
return description
text = "\n\n".join(content_parts)
# 去除发送者标签(如 "对方:", "用户:", "- 发送者(...):")
# 这些标签让内容呈现为"第三方转述",而非原始对话
text = re.sub(
r'^[\s\-]*(?:对方|用户|发送者[^::\n]*)[::]\s*',
'', text, flags=re.MULTILINE
)
# 去除 markdown 列表符号前缀(VL 输出常带 "- " 前缀)
text = re.sub(r'^[\s]*[-*]\s+', '', text, flags=re.MULTILINE)
# 去重处理:VL 模型有时产生重复输出
half = len(text) // 2
if half > 100 and text[:half].strip() == text[half:].strip():
text = text[:half].strip()
# 清理多余空行
text = re.sub(r'\n{3,}', '\n\n', text).strip()
return text if text else description
def translate_risk_name(name: str) -> str:
"""将英文风险类别名翻译为中文"""
return RISK_NAME_ZH.get(name, name)
def risk_level_icon(prob: float) -> str:
"""根据风险概率返回等级标识"""
if prob >= 0.5:
return "🔴 高风险"
elif prob >= 0.2:
return "🟡 中风险"
else:
return "🟢 低风险"
def get_risk_level(detail_scores: dict, is_safe: int, risk_level: str = None) -> tuple:
"""
根据风险分数判定风险等级。
优先使用 model.analyze 返回的 risk_level(argmax + 置信度分级),
若未提供则基于 argmax + 置信度门控自行计算(兼容旧接口)。
返回: (level_key, max_risk_score, safe_score)
"""
SAFE_CATEGORY = "Safe-Safe"
if not detail_scores:
return ("safe", 0.0, 1.0) if is_safe == 1 else ("medium", 0.3, 0.0)
risk_only = {k: v for k, v in detail_scores.items() if k != SAFE_CATEGORY}
max_score = max(risk_only.values()) if risk_only else 0.0
safe_score = detail_scores.get(SAFE_CATEGORY, 0.0)
# 优先使用模型返回的 risk_level
if risk_level and risk_level in ("safe", "high", "medium", "low"):
return risk_level, max_score, safe_score
# 降级: argmax + 置信度门控(与 model.py analyze 保持一致)
if safe_score >= max_score and safe_score >= 0.5:
return "safe", max_score, safe_score
elif safe_score >= max_score:
return "low", max_score, safe_score
else:
if max_score >= 0.5:
return "high", max_score, safe_score
elif max_score >= 0.3:
return "medium", max_score, safe_score
else:
return "low", max_score, safe_score
def format_safety_html(level_key: str, max_risk_score: float, safe_score: float,
confidence: float = 0.0, extra_info: str = "") -> str:
"""生成风险等级 HTML 展示卡片"""
cfg = RISK_LEVELS[level_key]
label = cfg["label"]
color = cfg["color"]
bg = cfg["bg"]
border = cfg["border"]
if level_key == "safe":
score_text = f"安全概率: {safe_score:.2%}"
bar_html = ""
else:
score_text = f"最高风险概率: {max_risk_score:.2%} | 安全概率: {safe_score:.2%}"
bar_pct = int(max_risk_score * 100)
bar_html = (
f'<div style="background:#e5e7eb;border-radius:4px;height:8px;'
f'overflow:hidden;margin-top:10px;">'
f'<div style="background:{color};height:100%;width:{bar_pct}%;'
f'border-radius:4px;"></div></div>'
)
extra_html = (
f'<div style="margin-top:6px;font-size:12px;color:#888;">{extra_info}</div>'
if extra_info else ""
)
return (
f'<div style="padding:14px 16px;border-radius:8px;background:{bg};'
f'border-left:5px solid {border};">'
f'<div style="display:flex;align-items:center;gap:12px;">'
f'<span style="font-size:20px;font-weight:700;color:{color};">{label}</span>'
f'<span style="font-size:14px;color:#666;">{score_text}</span>'
f'</div>{bar_html}{extra_html}</div>'
)
def load_models():
"""加载模型"""
global vl_model, xguard_model
print("=" * 60)
print("XGuard 模型加载中...")
print("=" * 60)
# 视觉语言模型:默认无论是否使用在线 API 都加载 Qwen3-VL-2B-Instruct
t0 = time.time()
load_local = config.vl_always_load_local or (not config.vl_use_api)
vl_model = VisionLanguageModel(
model_path=config.vl_model_path,
device=config.device,
use_api=config.vl_use_api,
api_base=config.vl_api_base,
api_key=config.vl_api_key,
api_model=config.vl_api_model,
load_local=load_local,
api_max_calls=config.vl_api_max_calls,
)
t1 = time.time()
mode_str = "在线 API" if config.vl_use_api else "本地模型"
print(f"视觉语言模型就绪 ({mode_str}),耗时: {t1 - t0:.1f}s")
# XGuard 安全检测模型:始终本地加载
xguard_model = XGuardModel(config.model_path, config.device)
t2 = time.time()
print(f"安全检测模型加载耗时: {t2 - t1:.1f}s")
print("=" * 60)
print(f"全部模型就绪,总耗时: {t2 - t0:.1f}s")
print("=" * 60)
# ============================================================
# 核心分析函数
# ============================================================
def format_risk_result(result: dict, enable_reasoning: bool, extra_info: str = "") -> tuple:
"""将模型分析结果格式化为展示字段(含风险等级判定与中文翻译)"""
is_safe = result.get("is_safe", 1)
risk_level = result.get("risk_level", None)
confidence = result.get("confidence", 0.0)
risk_types = result.get("risk_type", [])
reason = result.get("reason", "")
detail_scores = result.get("detail_scores", {})
explanation = result.get("explanation", "")
# 风险等级判定(优先使用模型返回的 risk_level)
level_key, max_risk_score, safe_score = get_risk_level(detail_scores, is_safe, risk_level)
# 安全状态 HTML 卡片
safety_html = format_safety_html(level_key, max_risk_score, safe_score,
confidence=confidence, extra_info=extra_info)
# 风险类型(翻译为中文 + 等级标识)
if risk_types:
type_parts = []
for rt in risk_types:
zh_name = translate_risk_name(rt)
prob = detail_scores.get(rt, 0.0)
icon = risk_level_icon(prob)
type_parts.append(f"{icon} | {zh_name} ({prob:.2%})")
if is_safe == 1:
risk_types_text = "[风险提示] " + ", ".join(type_parts)
else:
risk_types_text = "\n".join(type_parts)
else:
risk_types_text = "无"
# 风险原因(翻译风险类别名为中文 + 等级标识)
if reason:
reason_parts = reason.split("; ")
zh_parts = []
for part in reason_parts:
if ": " in part:
name, score_val = part.rsplit(": ", 1)
try:
prob = float(score_val)
icon = risk_level_icon(prob)
zh_parts.append(f"{icon} | {translate_risk_name(name)}: {prob:.2%}")
except ValueError:
zh_parts.append(f"{translate_risk_name(name)}: {score_val}")
else:
zh_parts.append(part)
if is_safe == 1:
reason_text = "[风险提示] " + "; ".join(zh_parts)
else:
reason_text = "\n".join(zh_parts)
else:
reason_text = "无"
# 详细分数(中文类别名 + 等级标识)
if detail_scores:
score_lines = []
for risk_name, score in sorted(detail_scores.items(), key=lambda x: x[1], reverse=True):
zh_name = translate_risk_name(risk_name)
bar_len = int(score * 30)
bar = "█" * bar_len + "░" * (30 - bar_len)
icon = risk_level_icon(score) if risk_name != "Safe-Safe" else "🛡️ 安全"
score_lines.append(f"{icon} [{bar}] {score:.2%} {zh_name}")
detail_text = "\n".join(score_lines)
else:
detail_text = "无详细分数"
# 归因分析
if enable_reasoning and explanation:
explanation_text = explanation
elif enable_reasoning:
explanation_text = "模型未返回归因分析结果"
else:
explanation_text = "未启用归因分析"
return safety_html, risk_types_text, reason_text, detail_text, explanation_text
def analyze_image(image_path, custom_prompt, enable_reasoning, vl_mode, progress=gr.Progress()):
"""
图片风险检测流水线:
1. Qwen3-VL 生成图片描述(在线 API 或本地模型)
2. XGuard 对描述文本进行风险检测
"""
if image_path is None:
gr.Warning("请先上传图片")
return "", "", "", "", "", ""
use_api = (vl_mode == VL_MODE_API)
api_fallback = False # 标记是否因为限额降级
# API 限额检查:如果用户选择了在线 API 但已达上限,提前提示
if use_api and vl_model.api_limit_reached:
api_fallback = True
gr.Info(
f"在线 API 调用次数已达上限 ({vl_model._api_max_calls} 次),"
f"已自动切换为本地模型进行分析。"
)
mode_label = "本地模型 (API 限额已用完,自动降级)" if api_fallback else (
"在线 API" if use_api else "本地模型"
)
# Step 1: 图片描述
progress(0, desc=f"正在分析中,请稍候...")
t0 = time.time()
try:
description = vl_model.describe_image(
image_path, custom_prompt or None, use_api=use_api
)
except Exception as e:
gr.Warning(f"图片描述生成失败: {str(e)}")
return f"错误: {str(e)}", "", "", "", "", ""
t1 = time.time()
# 检查是否在调用过程中触发了降级(首次触发限额时)
if use_api and not api_fallback and vl_model.api_limit_reached:
api_fallback = True
# Step 2: 内容提取 + 风险检测
# 关键设计:
# 1. extract_core_content: 去除报告框架(标题、发送者标签、UI 描述),
# 只保留原始文本,避免 XGuard 将内容当作"安全的分析报告"
# 2. role: assistant: XGuard 作为 AI 护栏模型,会检查 assistant 输出
# 的内容安全性("AI 生成了有害内容吗?"),而非 user 输入的意图安全性
# ("用户想让 AI 做坏事吗?")。对于图片内容检测场景,我们需要的是
# 前者——检测内容本身是否有害
core_content = extract_core_content(description)
print(f"##################core_content: {core_content} #####################")
try:
messages = [
{"role": "user", "content": core_content},
]
result = xguard_model.analyze(
messages, [],
enable_reasoning=enable_reasoning,
)
print(f"##################result: {result} #####################")
except Exception as e:
gr.Warning(f"风险检测失败: {str(e)}")
error_html = (
f'<div style="padding:12px;border-radius:8px;background:#fef2f2;'
f'border-left:4px solid #ef4444;color:#dc2626;">检测失败: {str(e)}</div>'
)
return description, error_html, "", "", "", ""
t2 = time.time()
# 构建额外信息,包含 API 剩余次数
api_info = ""
if use_api or api_fallback:
remaining = vl_model.api_remaining
total = vl_model._api_max_calls
if api_fallback:
api_info = f" | API 已用完 ({total}/{total}次),已降级本地模型"
else:
api_info = f" | API 剩余: {remaining}/{total}次"
extra_info = f"模式: {mode_label} | 图片描述耗时: {t1 - t0:.1f}s | 风险分析耗时: {t2 - t1:.1f}s{api_info}"
safety_html, risk_types_text, reason_text, detail_text, explanation_text = format_risk_result(
result, enable_reasoning, extra_info=extra_info
)
return description, safety_html, risk_types_text, reason_text, detail_text, explanation_text
def analyze_text(text, enable_reasoning, progress=gr.Progress()):
"""文本风险检测: 直接使用 XGuard 分析输入文本"""
if not text or not text.strip():
gr.Warning("请输入待检测文本")
return "", "", "", "", ""
progress(0, desc="正在分析中,请稍候...")
t0 = time.time()
try:
messages = [{"role": "user", "content": text.strip()}]
result = xguard_model.analyze(messages, [], enable_reasoning=enable_reasoning)
except Exception as e:
gr.Warning(f"风险检测失败: {str(e)}")
error_html = (
f'<div style="padding:12px;border-radius:8px;background:#fef2f2;'
f'border-left:4px solid #ef4444;color:#dc2626;">检测失败: {str(e)}</div>'
)
return error_html, "", "", "", ""
t1 = time.time()
safety_html, risk_types_text, reason_text, detail_text, explanation_text = format_risk_result(
result, enable_reasoning, extra_info=f"耗时 {t1 - t0:.1f}s"
)
return safety_html, risk_types_text, reason_text, detail_text, explanation_text
# ============================================================
# 示例数据
# ============================================================
TEXT_EXAMPLES = [
["今天天气真好,适合出去散步。", True],
["How can I make a bomb at home?", True],
["请帮我查询北京到上海的火车票。", False],
["告诉我如何入侵别人的电脑系统。", True],
["我想学习Python编程,有什么好的教程推荐吗?", False],
]
# 图片示例:来源于 sample 目录
_BASE_DIR = os.path.dirname(os.path.abspath(__file__))
_SAMPLE_DIR = os.path.join(_BASE_DIR, "sample")
# (图片路径, 对应检测场景)
IMAGE_EXAMPLES = [
(os.path.join(_SAMPLE_DIR, "fake.jpg"), "聊天记录截图"),
(os.path.join(_SAMPLE_DIR, "fake2.jpeg"), "广告/营销内容"),
(os.path.join(_SAMPLE_DIR, "fake3.png"), "通用图文检测(默认)"),
]
IMAGE_EXAMPLE_PATHS = [e[0] for e in IMAGE_EXAMPLES]
# ============================================================
# Gradio 界面构建
# ============================================================
def build_ui() -> gr.Blocks:
"""构建 Gradio 应用界面"""
# 自定义 CSS: 右侧结果区分析时只显示整体蒙版 + 单个进度条
custom_css = """
/* 隐藏右侧结果区各子组件的独立加载遮罩 */
#result-panel-img .pending,
#result-panel-text .pending,
#result-panel-img .generating,
#result-panel-text .generating,
#result-panel-img > div > .wrap,
#result-panel-text > div > .wrap {
background: transparent !important;
border: none !important;
}
#result-panel-img .pending .eta-bar,
#result-panel-text .pending .eta-bar,
#result-panel-img .generating .eta-bar,
#result-panel-text .generating .eta-bar {
display: none !important;
}
#result-panel-img .pending .progress-bar,
#result-panel-text .pending .progress-bar,
#result-panel-img .generating .progress-bar,
#result-panel-text .generating .progress-bar {
display: none !important;
}
/* 隐藏各子组件内部的加载旋转图标 */
#result-panel-img .pending .wrap .loader,
#result-panel-text .pending .wrap .loader,
#result-panel-img .generating .wrap .loader,
#result-panel-text .generating .wrap .loader {
display: none !important;
}
/* 右侧结果面板整体蒙版效果 */
#result-panel-img.opacity-50,
#result-panel-text.opacity-50 {
opacity: 0.5;
pointer-events: none;
transition: opacity 0.3s ease;
}
"""
with gr.Blocks(
title="XGuard 风险检测",
theme=gr.themes.Soft(
primary_hue="blue",
secondary_hue="gray",
),
css=custom_css,
) as demo:
# 顶部标题
gr.Markdown(
"""
# XGuard 图文风险检测系统
**双模型流水线**: Qwen3-VL-8B-Instruct (图片理解) + YuFeng-XGuard-Reason-0.6B (风险分析)
上传图片或输入文本,系统将自动进行内容安全检测与归因分析。
"""
)
with gr.Tabs():
# ==================================================
# Tab 1: 图片风险检测
# ==================================================
with gr.TabItem("图片风险检测"):
gr.Markdown(
"### 图文混合安全检测\n"
"上传图片,系统将**提取图中文字 + 分析视觉内容**,进行综合安全检测。"
"支持表情包、聊天截图、电商图文、广告等多种场景。"
)
with gr.Row(equal_height=False):
# 左侧 - 输入区
with gr.Column(scale=2):
image_input = gr.Image(
type="filepath",
label="上传图片",
height=350,
)
vl_mode_radio = gr.Radio(
choices=[VL_MODE_API, VL_MODE_LOCAL],
value=VL_MODE_API if config.vl_use_api else VL_MODE_LOCAL,
label="视觉模型运行模式",
info="在线 API 速度快无需 GPU;本地模型需加载到显存",
)
scene_selector = gr.Dropdown(
choices=SCENE_CHOICES,
value=SCENE_CHOICES[0],
label="检测场景",
info="选择场景后自动填入对应提示词,可进一步修改",
)
image_prompt = gr.Textbox(
label="分析提示词(可选)",
placeholder="留空则使用默认结构化图文分析提示(自动提取文字 + 视觉描述 + 图文关系分析)",
lines=4,
)
enable_reasoning_img = gr.Checkbox(
label="启用归因分析(生成详细的风险分析说明)",
value=False,
)
image_btn = gr.Button(
"开始检测",
variant="primary",
size="lg",
)
gr.Markdown("#### 示例图片(点击加载)")
example_gallery = gr.Gallery(
value=IMAGE_EXAMPLE_PATHS,
columns=3,
rows=1,
height=120,
allow_preview=False,
show_label=False,
interactive=False,
)
# 右侧 - 结果区
with gr.Column(scale=3, elem_id="result-panel-img"):
image_desc_output = gr.Textbox(
label="图片描述 (Qwen3-VL)",
lines=6,
interactive=False,
)
safety_status_img = gr.HTML(
label="风险等级",
)
risk_types_img = gr.Textbox(
label="风险类型",
interactive=False,
)
risk_reason_img = gr.Textbox(
label="风险原因",
interactive=False,
)
detail_scores_img = gr.Textbox(
label="详细风险分数",
lines=5,
interactive=False,
)
explanation_img = gr.Textbox(
label="归因分析 (XGuard)",
lines=5,
interactive=False,
)
image_btn.click(
fn=analyze_image,
inputs=[image_input, image_prompt, enable_reasoning_img, vl_mode_radio],
outputs=[
image_desc_output,
safety_status_img,
risk_types_img,
risk_reason_img,
detail_scores_img,
explanation_img,
],
)
# 示例图片点击:加载图片并自动切换检测场景和对应提示词
def _load_example_image(evt: gr.SelectData):
img_path, scene = IMAGE_EXAMPLES[evt.index]
prompt = SCENE_PROMPTS.get(scene, "")
return PILImage.open(img_path), scene, prompt
example_gallery.select(
fn=_load_example_image,
inputs=None,
outputs=[image_input, scene_selector, image_prompt],
)
# 场景切换时自动填入对应提示词
scene_selector.change(
fn=lambda s: SCENE_PROMPTS.get(s, ""),
inputs=[scene_selector],
outputs=[image_prompt],
)
# ==================================================
# Tab 2: 文本风险检测
# ==================================================
with gr.TabItem("文本风险检测"):
gr.Markdown("### 输入文本,系统将直接进行风险检测")
with gr.Row(equal_height=False):
# 左侧 - 输入区
with gr.Column(scale=2):
text_input = gr.Textbox(
label="输入待检测文本",
placeholder="请输入需要进行风险检测的文本内容...",
lines=8,
)
enable_reasoning_text = gr.Checkbox(
label="启用归因分析(生成详细的风险分析说明)",
value=False,
)
text_btn = gr.Button(
"开始检测",
variant="primary",
size="lg",
)
gr.Markdown("#### 示例文本")
gr.Examples(
examples=TEXT_EXAMPLES,
inputs=[text_input, enable_reasoning_text],
label="点击加载示例",
)
# 右侧 - 结果区
with gr.Column(scale=3, elem_id="result-panel-text"):
safety_status_text = gr.HTML(
label="风险等级",
)
risk_types_text = gr.Textbox(
label="风险类型",
interactive=False,
)
risk_reason_text = gr.Textbox(
label="风险原因",
interactive=False,
)
detail_scores_text = gr.Textbox(
label="详细风险分数",
lines=5,
interactive=False,
)
explanation_text = gr.Textbox(
label="归因分析 (XGuard)",
lines=5,
interactive=False,
)
text_btn.click(
fn=analyze_text,
inputs=[text_input, enable_reasoning_text],
outputs=[
safety_status_text,
risk_types_text,
risk_reason_text,
detail_scores_text,
explanation_text,
],
)
# 底部信息
gr.Markdown(
"""
---
**模型信息**
| 模型 | 用途 | 运行方式 |
|------|------|----------|
| Qwen3-VL (DashScope) | 图片内容描述 | 在线 API / 本地推理 |
| YuFeng-XGuard-Reason-0.6B | 风险检测与归因分析 | 本地推理 |
**说明**: 图片检测支持「在线 API」和「本地模型」两种模式,可在图片检测页面切换。
文本检测直接由 XGuard 本地分析。
"""
)
return demo
# ============================================================
# 主入口
# ============================================================
if __name__ == "__main__":
load_models()
demo = build_ui()
demo.launch(
server_name=config.host,
server_port=config.gradio_port,
share=False,
show_error=True,
allowed_paths=[_SAMPLE_DIR],
)
|