Search Results for author: M. Akin Yilmaz

Found 9 papers, 4 papers with code

Motion-Adaptive Inference for Flexible Learned B-Frame Compression

no code implementations13 Feb 2024 M. Akin Yilmaz, O. Ugur Ulas, Ahmet Bilican, A. Murat Tekalp

As a remedy, we propose controlling the motion range for flow prediction during inference (to approximately match the range of motions in the training data) by downsampling video frames adaptively according to amount of motion and level of hierarchy in order to compress all B-frames using a single flexible-rate model.

Video Compression

Multi-Scale Deformable Alignment and Content-Adaptive Inference for Flexible-Rate Bi-Directional Video Compression

1 code implementation28 Jun 2023 M. Akin Yilmaz, O. Ugur Ulas, A. Murat Tekalp

The lack of ability to adapt the motion compensation model to video content is an important limitation of current end-to-end learned video compression models.

Motion Compensation Video Compression

Flexible-Rate Learned Hierarchical Bi-Directional Video Compression With Motion Refinement and Frame-Level Bit Allocation

2 code implementations27 Jun 2022 Eren Cetin, M. Akin Yilmaz, A. Murat Tekalp

This paper presents improvements and novel additions to our recent work on end-to-end optimized hierarchical bi-directional video compression to further advance the state-of-the-art in learned video compression.

Image Compression Motion Estimation +1

End-to-End Rate-Distortion Optimized Learned Hierarchical Bi-Directional Video Compression

2 code implementations17 Dec 2021 M. Akin Yilmaz, A. Murat Tekalp

Conventional video compression (VC) methods are based on motion compensated transform coding, and the steps of motion estimation, mode and quantization parameter selection, and entropy coding are optimized individually due to the combinatorial nature of the end-to-end optimization problem.

Motion Estimation MS-SSIM +3

DFPN: Deformable Frame Prediction Network

1 code implementation26 May 2021 M. Akin Yilmaz, A. Murat Tekalp

Learned frame prediction is a current problem of interest in computer vision and video compression.

Video Compression

Self-Organized Variational Autoencoders (Self-VAE) for Learned Image Compression

no code implementations25 May 2021 M. Akin Yilmaz, Onur Keleş, Hilal Güven, A. Murat Tekalp, Junaid Malik, Serkan Kiranyaz

In end-to-end optimized learned image compression, it is standard practice to use a convolutional variational autoencoder with generalized divisive normalization (GDN) to transform images into a latent space.

Image Compression

Effect of Architectures and Training Methods on the Performance of Learned Video Frame Prediction

no code implementations13 Aug 2020 M. Akin Yilmaz, A. Murat Tekalp

We analyze the performance of feedforward vs. recurrent neural network (RNN) architectures and associated training methods for learned frame prediction.

End-to-End Rate-Distortion Optimization for Bi-Directional Learned Video Compression

no code implementations11 Aug 2020 M. Akin Yilmaz, A. Murat Tekalp

Conventional video compression methods employ a linear transform and block motion model, and the steps of motion estimation, mode and quantization parameter selection, and entropy coding are optimized individually due to combinatorial nature of the end-to-end optimization problem.

Motion Estimation Quantization +1

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