Search Results for author: Zhihao Duan

Found 14 papers, 8 papers with code

Flexible Variable-Rate Image Feature Compression for Edge-Cloud Systems

2 code implementations30 Mar 2024 Md Adnan Faisal Hossain, Zhihao Duan, Yuning Huang, Fengqing Zhu

By compressing different intermediate features of a pre-trained vision task model, the proposed method can scale the encoding complexity without changing the overall size of the model.

Feature Compression

Theoretical Bound-Guided Hierarchical VAE for Neural Image Codecs

1 code implementation27 Mar 2024 Yichi Zhang, Zhihao Duan, Yuning Huang, Fengqing Zhu

Recent studies reveal a significant theoretical link between variational autoencoders (VAEs) and rate-distortion theory, notably in utilizing VAEs to estimate the theoretical upper bound of the information rate-distortion function of images.

Probing Image Compression For Class-Incremental Learning

no code implementations10 Mar 2024 Justin Yang, Zhihao Duan, Andrew Peng, Yuning Huang, Jiangpeng He, Fengqing Zhu

To this end, we introduce a new framework to incorporate image compression for continual ML including a pre-processing data compression step and an efficient compression rate/algorithm selection method.

Class Incremental Learning Data Compression +3

Towards Backward-Compatible Continual Learning of Image Compression

1 code implementation29 Feb 2024 Zhihao Duan, Ming Lu, Justin Yang, Jiangpeng He, Zhan Ma, Fengqing Zhu

This paper explores the possibility of extending the capability of pre-trained neural image compressors (e. g., adapting to new data or target bitrates) without breaking backward compatibility, the ability to decode bitstreams encoded by the original model.

Continual Learning Image Compression +1

Another Way to the Top: Exploit Contextual Clustering in Learned Image Coding

no code implementations21 Jan 2024 Yichi Zhang, Zhihao Duan, Ming Lu, Dandan Ding, Fengqing Zhu, Zhan Ma

While convolution and self-attention are extensively used in learned image compression (LIC) for transform coding, this paper proposes an alternative called Contextual Clustering based LIC (CLIC) which primarily relies on clustering operations and local attention for correlation characterization and compact representation of an image.

Clustering Image Compression +3

Deep Hierarchical Video Compression

no code implementations12 Dec 2023 Ming Lu, Zhihao Duan, Fengqing Zhu, Zhan Ma

Recently, probabilistic predictive coding that directly models the conditional distribution of latent features across successive frames for temporal redundancy removal has yielded promising results.

Video Compression

An Improved Upper Bound on the Rate-Distortion Function of Images

1 code implementation5 Sep 2023 Zhihao Duan, Jack Ma, Jiangpeng He, Fengqing Zhu

Recent work has shown that Variational Autoencoders (VAEs) can be used to upper-bound the information rate-distortion (R-D) function of images, i. e., the fundamental limit of lossy image compression.

Image Compression

QARV: Quantization-Aware ResNet VAE for Lossy Image Compression

2 code implementations16 Feb 2023 Zhihao Duan, Ming Lu, Jack Ma, Yuning Huang, Zhan Ma, Fengqing Zhu

This paper addresses the problem of lossy image compression, a fundamental problem in image processing and information theory that is involved in many real-world applications.

Image Compression Quantization

Efficient Feature Compression for Edge-Cloud Systems

1 code implementation17 Nov 2022 Zhihao Duan, Fengqing Zhu

Optimizing computation in an edge-cloud system is an important yet challenging problem.

Classification Feature Compression +1

Lossy Image Compression with Quantized Hierarchical VAEs

2 code implementations27 Aug 2022 Zhihao Duan, Ming Lu, Zhan Ma, Fengqing Zhu

Recent research has shown a strong theoretical connection between variational autoencoders (VAEs) and the rate-distortion theory.

Image Compression Quantization

Opening the Black Box of Learned Image Coders

no code implementations26 Feb 2022 Zhihao Duan, Ming Lu, Zhan Ma, Fengqing Zhu

End-to-end learned lossy image coders (LICs), as opposed to hand-crafted image codecs, have shown increasing superiority in terms of the rate-distortion performance.

Weyl invariant Jacobi forms along Higgsing trees

no code implementations18 Dec 2020 Zhihao Duan, David Jaramillo Duque, Amir-Kian Kashani-Poor

Our computations are made feasible by the fact that symmetry enhancements of the gauge theory which are manifest on the massless spectrum are inherited by the entire tower of BPS particles.

High Energy Physics - Theory Algebraic Geometry

RAPiD: Rotation-Aware People Detection in Overhead Fisheye Images

1 code implementation23 May 2020 Zhihao Duan, M. Ozan Tezcan, Hayato Nakamura, Prakash Ishwar, Janusz Konrad

Recent methods for people detection in overhead, fisheye images either use radially-aligned bounding boxes to represent people, assuming people always appear along image radius or require significant pre-/post-processing which radically increases computational complexity.

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