Route A — moving camera, static environment
Use a 3D camera solve with static features distributed across depth.
摄影机移动、环境静止：使用覆盖不同深度的静态特征求解三维相机。
Production workflow / 制作工作流
Live-action Compositing实景合成工作流
A dependable composite starts before tracking: classify the shot, make every assumption explicit, and keep proving the result through time.
可靠的实景合成从跟踪之前开始：先判断镜头类型，明确所有假设，并在完整时间范围内持续验证结果。
- Tools / 工具
- After Effects · Blender
- Contract / 基准
- Time · Lens · Scale · Color
- Proof / 验证
- Spatial + temporal QC
01 / Route the shot
Decide what moves before deciding what to track.
Route B — fixed camera, moving subject
Use object, planar, or 2D tracking on the moving target.
摄影机固定、主体移动：对主体进行对象、平面或二维跟踪。
Route C — moving camera, moving subject
Solve the environment and relative target motion as separate layers.
摄影机和主体都移动：把环境相机与主体相对运动分层求解。
02 / Production gates
A shot moves forward only after the simple test passes.
- 01
Preserve the plate and classify the shot
保全原片，并先判断镜头类型
Work from a copy, probe the media, identify what moves, and choose one tracking route before opening a solve.
GateSource, timing, lens, and route are recorded.
- 02
Lock time, lens, scale, and color
锁定时间、镜头、尺度与色彩
Record FPS, frame-zero convention, distortion domain, measured distance, camera assumptions, and the shared color pipeline.
GateNo material assumption remains hidden.
- 03
Track only the motion model you need
只求解真正需要的运动模型
Exclude moving people, reflections, screens, and foliage from a static-environment solve; use planar or object tracking when full 3D parallax is unnecessary.
GateTracks remain stable through difficult motion and frame edges.
- 04
Prove the solve with simple geometry
用简单几何体验证求解
Place a cube or grid at near, middle, and far depth, then inspect the first, middle, and last frames plus reversals and fast movement.
GateNo visible sliding, jump, pivot twitch, or lens-domain mismatch.
- 05
Rebuild physical integration in Blender
在 Blender 中恢复真实整合关系
Restore measured scale and axes, then separate hero CG, occlusion, shadow catcher, reflection, collision, and light roles.
GateReal scale, ground contact, and shadow agree across the shot.
- 06
Render, composite, redistort, and inspect
渲染、合成、重加畸变并检查
Render scene-linear EXR/AOV outputs, composite with an explicit alpha contract, reapply lens distortion, then match blur, depth of field, grain, and delivery color.
GateStill-frame inspection and full-speed playback both pass.
03 / Delivery
Final QC / 最终质检
- First, middle, last, reversal, and corner frames.首帧、中间帧、末帧、运动反向点与画面角落。
- Attachment, occlusion, contact, shadow, and reflection.附着、遮挡、接触、阴影与反射。
- Full-speed playback, channel audit, and versioned delivery.全速播放、通道审计与可追溯版本交付。