feat: 像素级扰动滤镜降低平台查重风险 (Issue #1765)

- generate_pixel_perturbation()：随机选 2-3 种滤镜组合 - noise: 轻微噪声 (0.01~0.02) - unsharp: 锐化/柔化 (-0.5~+0.5) - curves: 对比度微调 (0.95~1.05) - color_balance: RGB 通道偏移 - _apply_pixel_perturbation()：渲染时追加到 FFmpeg filter chain - edit_plan_service：批量变体生成时为每个变体生成不同像素扰动 - 参数幅度确保肉眼不可见（SSIM > 0.95），帧级差异 > 3% - 11 个新测试覆盖滤镜组合/参数范围/验收
2026-09-07 20:24:13 +08:00
parent 2a0b75c007
commit bb98620a8a
4 changed files with 213 additions and 2 deletions
@@ -945,8 +945,12 @@ class EditPlanService:
                # #1764：写入节奏模板
                if idx < len(rhythm_templates_for_variants):
                    config_update["rhythm_template"] = rhythm_templates_for_variants[idx]
+                # #1765：写入像素级扰动滤镜
+                from packages.domain.variant_plan_selector import generate_pixel_perturbation
+                pixel_pert = generate_pixel_perturbation(rng)
+                config_update["pixel_perturbation"] = pixel_pert
                self.update_plan_config(pid, config_update)
-                logger.info("变体 %d 视觉扰动: plan=%s perturbation=%s", idx, pid, perturbation)
+                logger.info("变体 %d 视觉扰动+像素扰动: plan=%s vis=%s pix=%s", idx, pid, perturbation, pixel_pert)
            except Exception:
                logger.exception("变体 %d 视觉扰动生成失败（不阻断）: plan=%s", idx, pid)