Demo Data from VLDB 2026 / reviewers in the wild / expert
Changgui Shi
dblp:70/5322
· DBLP profile ↗
3ranked-venue papers
2as first author
0since 2021 · last 2004
—ORCID · none
Domains — the database's venue-derived domains; a paper can count in several
Graphics, computer vision, multimedia, augmented reality and games · 2 · 1 first-authorSecurity and privacy · 1 · 1 first-author
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 |
Multimedia systems and quality of experience · 50% Image and video coding · 50% | |
| Network and information security
1 paper |
Cryptographic primitives and cryptanalysis · 100% |
Topics — the 3 heaviest of 3, each with the papers that count most for it
| Topic | Weight | Papers | Last | Evidence papers |
|---|---|---|---|---|
Multimedia systems and quality of experience
multimedia security |
0.0 | 1 | 1998 | A Fast MPEG Video Encryption Algorithm · ACM Multimedia 1998 |
Image and video coding
video encryption |
0.0 | 1 | 1998 | A Fast MPEG Video Encryption Algorithm · ACM Multimedia 1998 |
Cryptographic primitives and cryptanalysis
symmetric cryptography |
0.0 | 1 | 1998 | A Fast MPEG Video Encryption Algorithm · ACM Multimedia 1998 |
Methods — techniques the papers use, named apart from their topics
XOR · 0.0DCT coefficient sign manipulation · 0.0
| Year | Publication | Venue | Position |
|---|---|---|---|
| 2004 | MPEG Video Encryption Algorithms
Bharat K. Bhargava, Changgui Shi, Sheng-Yih Wang |
Multim. Tools Appl. | 2 |
| 1998 | A Fast MPEG Video Encryption AlgorithmabstractMultimedia data secmity is important for multimedia commerce.Previous cryptography studies have focused on text data.The encryption algorithms devdoped to secure text data may not be suitable to multimedia applications becattse of large data sizes and real time constraint.For multimedia applications, light weight encryption algorithms are attractive.We present a novel MPEG Video Encryption Algorithm, called VEA The basic idea of VEA is to use a secret key randomly changing the sign bits of all of the DCT coefficients of MPEG video.VEA'S encryption effects are achieved by the IDCT during MPEG video decompression processing.VEA adds minimum overhead to MPEG codecj one Mm&e XOR operation to each none zero DCT coefficient.A software implementation of VEA is fast enough to meet the real time requirement of MPEG video applications.Our experimental results show that VEA achieves satisfying results.We believe that it can be used to secure video-on-demand, tideo conferencing and video email applications. Changgui Shi, Bharat K. Bhargava |
ACM Multimedia | 1 |
| 1998 | An Efficient MPEG Video Encryption AlgorithmabstractMultimedia data security is important for multimedia commerce. Previous cryptography studies have focused on text data. The encryption algorithms developed to secure text data may not be suitable to multimedia applications because of large data sizes and real time constraints. For multimedia applications, light weight encryption algorithms are attractive. We present an efficient MPEG video encryption algorithm. This algorithm uses a secret key randomly changing the sign bits of encoded differential values of DC coefficients of I pictures and the sign bits of encoded differential values of motion vectors of B and P pictures. The encryption effects are achieved by the IDCT during MPEG video decompression processing. This algorithm adds very small overhead to MPEG codec. A software implementation is fast enough to meet the real time requirement of MPEG video applications. Experimental results show that this algorithm achieves satisfying results. We believe that it can be used to secure video-on-demand, video conferencing and video email applications. Changgui Shi, Bharat K. Bhargava |
SRDS | 1 |