Search Results for author: Christopher Schroers

Found 18 papers, 1 papers with code

Lossy Image Compression with Foundation Diffusion Models

no code implementations12 Apr 2024 Lucas Relic, Roberto Azevedo, Markus Gross, Christopher Schroers

Incorporating diffusion models in the image compression domain has the potential to produce realistic and detailed reconstructions, especially at extremely low bitrates.

Denoising Image Compression +1

Revitalizing Legacy Video Content: Deinterlacing with Bidirectional Information Propagation

no code implementations30 Oct 2023 Zhaowei Gao, Mingyang Song, Christopher Schroers, Yang Zhang

Our proposed method supports bidirectional spatio-temporal information propagation across multiple scales to leverage information in both space and time.

Controllable Inversion of Black-Box Face Recognition Models via Diffusion

no code implementations23 Mar 2023 Manuel Kansy, Anton Raël, Graziana Mignone, Jacek Naruniec, Christopher Schroers, Markus Gross, Romann M. Weber

Face recognition models embed a face image into a low-dimensional identity vector containing abstract encodings of identity-specific facial features that allow individuals to be distinguished from one another.

Denoising Face Recognition

A Generative Model for Digital Camera Noise Synthesis

no code implementations16 Mar 2023 Mingyang Song, Yang Zhang, Tunç O. Aydın, Elham Amin Mansour, Christopher Schroers

To this end, we propose an effective generative model which utilizes clean features as guidance followed by noise injections into the network.

Kernel Aware Resampler

no code implementations CVPR 2023 Michael Bernasconi, Abdelaziz Djelouah, Farnood Salehi, Markus Gross, Christopher Schroers

This renders our model applicable for different types of data not seen during the training such as normals.

Super-Resolution

Video Compression With Entropy-Constrained Neural Representations

no code implementations CVPR 2023 Carlos Gomes, Roberto Azevedo, Christopher Schroers

This performance gap can be explained by the fact that current NVR methods: i) use architectures that do not efficiently obtain a compact representation of temporal and spatial information; and ii) minimize rate and distortion disjointly (first overfitting a network on a video and then using heuristic techniques such as post-training quantization or weight pruning to compress the model).

Quantization Video Compression

Frame Interpolation Transformer and Uncertainty Guidance

no code implementations CVPR 2023 Markus Plack, Karlis Martins Briedis, Abdelaziz Djelouah, Matthias B. Hullin, Markus Gross, Christopher Schroers

Through this error estimation, our method can produce even higher-quality intermediate frames using only a fraction of the time compared to a full rendering.

Optical Flow Estimation Video Frame Interpolation

Blind Image Restoration with Flow Based Priors

no code implementations9 Sep 2020 Leonhard Helminger, Michael Bernasconi, Abdelaziz Djelouah, Markus Gross, Christopher Schroers

In contrast to this, we propose using normalizing flows to model the distribution of the target content and to use this as a prior in a maximum a posteriori (MAP) formulation.

Denoising Image Enhancement +1

Lossy Image Compression with Normalizing Flows

no code implementations ICLR Workshop Neural_Compression 2021 Leonhard Helminger, Abdelaziz Djelouah, Markus Gross, Christopher Schroers

However, state-of-the-art solutions for deep image compression typically employ autoencoders which map the input to a lower dimensional latent space and thus irreversibly discard information already before quantization.

Image Compression Quantization

Content Adaptive Optimization for Neural Image Compression

no code implementations4 Jun 2019 Joaquim Campos, Simon Meierhans, Abdelaziz Djelouah, Christopher Schroers

The field of neural image compression has witnessed exciting progress as recently proposed architectures already surpass the established transform coding based approaches.

Image Compression

Deep Generative Video Compression

no code implementations NeurIPS 2019 Jun Han, Salvator Lombardo, Christopher Schroers, Stephan Mandt

The usage of deep generative models for image compression has led to impressive performance gains over classical codecs while neural video compression is still in its infancy.

Image Compression Temporal Sequences +1

Deep Video Color Propagation

no code implementations9 Aug 2018 Simone Meyer, Victor Cornillère, Abdelaziz Djelouah, Christopher Schroers, Markus Gross

Traditional approaches for color propagation in videos rely on some form of matching between consecutive video frames.

Style Transfer

Normalized Cut Loss for Weakly-supervised CNN Segmentation

no code implementations CVPR 2018 Meng Tang, Abdelaziz Djelouah, Federico Perazzi, Yuri Boykov, Christopher Schroers

Our normalized cut loss approach to segmentation brings the quality of weakly-supervised training significantly closer to fully supervised methods.

Interactive Segmentation Segmentation +1

PhaseNet for Video Frame Interpolation

no code implementations CVPR 2018 Simone Meyer, Abdelaziz Djelouah, Brian McWilliams, Alexander Sorkine-Hornung, Markus Gross, Christopher Schroers

We show that this is superior to the hand-crafted heuristics previously used in phase-based methods and also compares favorably to recent deep learning based approaches for video frame interpolation on challenging datasets.

Video Frame Interpolation

On Regularized Losses for Weakly-supervised CNN Segmentation

no code implementations ECCV 2018 Meng Tang, Federico Perazzi, Abdelaziz Djelouah, Ismail Ben Ayed, Christopher Schroers, Yuri Boykov

This approach simplifies weakly-supervised training by avoiding extra MRF/CRF inference steps or layers explicitly generating full masks, while improving both the quality and efficiency of training.

Segmentation Semantic Segmentation

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