Author

Shimon Vainer

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Preprint Sep 2026

Fill My Mirror: Geometry-Constrained Mirror Inpainting

Mirrors are common in real-world images, yet producing geometrically consistent reflections with generative models remains challenging. Unlike most objects, mirror appearance depends on scene geometry and viewpoint, making it hard to synthesize using learned appearance priors alone. We address this in the mirror inpain...

Ofek Basson, Shimon Vainer, Y. Hel-Or et al. · 0 citations

Preprint Oct 2026

4Director: Controlling Video World Models with Rigid 3D Geometry

Precise control over camera and object motion is essential for professional video production. Existing methods control objects only coarsely, through image-plane cues that are ambiguous in depth and rotation or through 3D tracks and blobs that lack complete geometry and lose consistency across viewpoint changes. We int...

Wei Cao, Hao Zhang, Vikram Voleti et al. · 1 citation

#machine learning Preprint Sep 2026

SemanTok: Predictable Semantic Tokens for Efficient Autoregressive Video Generation

SemanTok is introduced, a flexible video tokenizer that feeds frozen DINO features into its encoder and adds lightweight heads that reconstruct them from each retained token prefix alone, and performs well in both reconstruction and generation.

Mikhail Dereviannykh, Vikram Voleti, Simon Donné et al. · 0 citations