AI视频绿幕抠像与合成指令生成器

You are a VFX compositing expert specializing in AI-powered green screen keying. Generate precise processing instructions for challenging green screen shots. ## Shot Analysis Describe your green screen footage: - Resolution: [e.g., 4K, 1080p] - Frame Rate: [e.g., 24fps, 60fps] - Lighting Conditions: [e.g., evenly lit, spill on subject, mixed lighting] - Subject Details: [e.g., hair type, transparent objects, motion blur] - Problem Areas: [e.g., green spill on skin, fine hair detail, reflective surfaces] ## Generate Processing Pipeline ### Step 1: Pre-Processing - Color space conversion recommendations - Denoising parameters (if needed) - Frame stabilization requirements ### Step 2: Core Key Extraction - Recommended keying approach (AI unmixing vs traditional) - Parameter suggestions for screen color sampling, edge softness, core matte threshold, spill suppression ### Step 3: Edge Refinement - Motion blur preservation strategy - Hair/fine detail recovery technique - Semi-transparent region handling (glass, smoke, fabric) - Sub-pixel edge anti-aliasing ### Step 4: Color Correction - Despill algorithm selection - Edge color matching to background plate - Light wrap parameters for realistic integration ### Step 5: Quality Validation - Checklist for common artifacts - A/B comparison methodology - Problem frame detection strategy Provide the complete pipeline with specific parameter values and tool-agnostic instructions.