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AI 도감

이미지-비디오 생성

정지 이미지 한 장을 움직이게 한다

영상입문 #24
입력이미지영상

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이 능력이 뜻하는 것

Takes an image, optionally with a motion description, and outputs a clip that starts from it. The first frame is usually tightly constrained to the input, and later frames extrapolate motion and camera movement from there. Unlike text-to-video it has a definite visual starting point, which raises the bar for preserving subject identity and appearance.

기술적으로 구현하는 방법

A common approach encodes the input as a condition, either pinning the first frame of the diffusion process or injecting it as a reference, then generates the following frames; another route extends keyframes with an image model and interpolates in between. Motion magnitude and camera control are set by explicit strength parameters or trajectory conditions, while physical plausibility is learned implicitly from motion priors in the data.

대표 제품

8

관련 기관

대표적 용도

  • Animating photos and memory clips
  • Product showcases and animated ad visuals
  • Motion pre-vis from key art and storyboards
  • Shot drafts for games and film

성능을 평가하는 방법

FVD
Distribution gap between generated and real video
First-frame fidelity
Agreement between the first frame and the input
Human preference
Pairwise judgement of motion naturalness and subject retention

경계와 난점

  • Identity drifts after the first frame, with faces and clothing changing first
  • Large camera moves break background geometry: straight lines bend and buildings misalign
  • Occlusion and parallax are often wrong, inverting front-back relations

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