2.1 Base LVDM for Short Video Generation LVDM:= Latent video diffusion model Latent:= 对隐向量latent vector添加噪音,而不是直接对image或者video添加噪音 Video Generation Backbone.3D U-Net需要考虑一维时间和二维空间信息(spatial-temporal factorized)。在kernel为1×3×3的3D conv layers加上一些temporal a...
下面我们就从一些具体的工作入手,看一下现有的video diffusion models提供的解决方案。 Align Your Latents Align Your Latents发布于CVPR 2023的《Align your Latents: High-Resolution Video Synthesis with Latent Diffusion Models》的一文中,这篇工作主要想做的事情就是基于image diffusion models去做一个视频生成模...
增加adaptive group normalization对生成质量有帮助。2.2 基于分层LVDM的长视频生成：用自回归的方式对2.1中生成的short video的latents进行扩展。m是随机采样的掩码，保证条件和无条件同时训练。分层潜在生成包括一个模型预测稀疏的视频帧，另一个模型补全两帧之间的间隔。条件潜在扰动受到conditional noise ...
所以从general的video clip里面学习motion pattern, 应用到personilzed的t2i模型上就能让图片变成动画 AnimateDiff就提出了两个module加在Latent Diffusion Model的video pretraining过程中,实现这个功能 Text2Video-Zero AnimateDiff还是需要在webvid上进行大规模训练,一次训练,即插即用到其他t2i模型上 工作考虑不经过额外...
LVDM全称Latent Video Diffusion Models,是由香港科技大学与腾讯AI实验室发布的一个视频扩散模型,可以用来做文本生成视频以及视频编辑。 ---2023/4/6--- 目前该模型相关论文还没有发布,但是已经发布了预训练结果。 与该模型同步发布的是一个视频编辑工具:...
Video GenerationSky Time-lapseDIGAN (128x128)KVD166.8# 2 Compare FVD 16114.6# 5 Compare Video GenerationTaichiMoCoGAN-HD (128x128)FVD16144.7# 5 Compare KVD1625.4# 1 Compare Video GenerationTaichiDIGAN (256x256)FVD16156.7# 6 Compare Video GenerationTaichiLVDM (256x256)FVD1699# 3 ...
LVDM:Latent Video Diffusion Models for High-Fidelity Long Video Generation Yingqing He1 Tianyu Yang2 Yong Zhang2 Ying Shan2 Qifeng Chen1 1The Hong Kong University of Science and Technology 2Tencent AI Lab TL;DR: An efficient video diffusion model that can: ...
Latent Diffusion Models (LDMs) enable high-quality image synthesis while avoiding excessive compute demands by training a diffusion model in a compressed lower-dimensional latent space. Here, we apply the LDM paradigm to high-resolution video generation, a particularly resource-intensive task. We ...
To this end, we propose LaVie, an integrated video generation framework that operates on cascaded video latent diffusion models, comprising a base T2V model, a temporal interpolation model, and a video super-resolution model. Our key insights are two-fold: 1) We reveal that the incorporation ...
We present Stable Video Diffusion - a latent video diffusion model for high-resolution, state-of-the-art text-to-video and image-to-video generation. Recently, latent diffusion models trained for 2D image synthesis have been turned into generative video models by inserting temporal layers and fine...