Chengjun Jin

dblp:39/10174 · DBLP profile ↗
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2ranked-venue papers
1as first author
2since 2021 · last 2026
—ORCID · unresolved

Domains — the database's venue-derived domains; a paper can count in several

Artificial intelligence and machine learning · 1 · 1 since 2021Computer networks · 1 · 1 first-author · 1 since 2021Graphics, computer vision, multimedia, augmented reality and games · 1 · 1 since 2021

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer graphics and multimedia
1 paper
Image and video coding · 100%
Computer architecture, parallel and distributed computing, and storage systems
1 paper
Distributed systems · 100%

Topics — the 3 heaviest of 3, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Image and video coding
image compression
1.012026
HCF: Hierarchical Cascade Framework for Distributed Multi-Stage Image Compression · AAAI 2026
Image and video coding › scalable coding
progressive coding
1.012026
HCF: Hierarchical Cascade Framework for Distributed Multi-Stage Image Compression · AAAI 2026
Distributed systems › distributed data processing
distributed image processing
0.312026
HCF: Hierarchical Cascade Framework for Distributed Multi-Stage Image Compression · AAAI 2026

Methods — techniques the papers use, named apart from their topics

policy-driven quantization · 2.0latent-space transformation · 2.0
YearPublicationVenuePosition
2026 HCF: Hierarchical Cascade Framework for Distributed Multi-Stage Image Compression
abstract
Distributed multi-stage image compression—where visual content traverses multiple processing nodes under varying quality requirements—poses challenges. Progressive methods enable bitstream truncation but underutilize available compute resources; successive compression repeats costly pixel-domain operations and suffers cumulative quality loss and inefficiency; fixed-parameter models lack post-encoding flexibility. In this work, we developed the Hierarchical Cascade Framework (HCF) that achieves high rate-distortion performance and better computational efficiency through direct latent-space transformations across network nodes in distributed multi-stage image compression systems. Under HCF, we introduced policy-driven quantization control to optimize rate–distortion trade-offs, and established the edge quantization principle through differential entropy analysis. The configuration based on this principle demonstrates up to 0.6dB PSNR gains over other configurations. When comprehensively evaluated on the Kodak, CLIC, and CLIC2020-mobile datasets, HCF outperforms successive-compression methods by up to 5.56% BD-Rate in PSNR on CLIC, while saving up to 97.8% FLOPs, 96.5% GPU memory, and 90.0% execution time. It also outperforms state-of-the-art progressive compression methods by up to 12.64% BD-Rate on Kodak and enables retraining-free cross-quality adaptation with 7.13-10.87% BD-Rate reductions on CLIC2020-mobile.
Junhao Cai, Taegun An, Chengjun Jin, Sung Il Choi, Changhee Joo
AAAI3
2026 Economic and strategic perspectives on CDN pricing: A comprehensive review
Chengjun Jin, Junhao Cai, Changhee Joo
Comput. Networks1