Abstract
MPEG-4, a new audio-visual coding standard has strong compression tools, such as sprite coding. We have focused on sprite coding and proposed “Sprite Mode”. In sprite mode, video sequence is divided into foreground object and background object. Foreground object is compressed using MPEG-4 object coding, while background object is compressed using sprite coding. Sprite mode does not always adopt any video sequence such that images having still camera motion can be compressed in enough quality in low bitrate. So, in this paper, we developed new MPEG-4 video encoder using sprite coding. In the proposed MPEG-4 encoder, multi-mode coding is newly proposed. Video shot suitable for conventional coding method is coded by normal mode (conventional method), while video shot suitable for sprite coding is coded by sprite mode. These two modes are automatic selected in any video sequences. We improved the processing flow using stuck system in order to consequently process video such as AVI format. We improved global motion detection algorithm, foreground object and background sprite generation algorithm. Then we proposed the simple rate-control for sprite mode. Then, we have some experiment on MPEG-4 video coding. The result shows effectiveness’ of proposed encoder in low bitrate coding.
| Original language | English |
|---|---|
| Pages (from-to) | 333-342 |
| Number of pages | 10 |
| Journal | Journal of the Institute of Image Electronics Engineers of Japan |
| Volume | 33 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2004 Jan 1 |
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Keywords
- MPEG-4
- Object coding
- Sprite
- System developement
- Video compression
ASJC Scopus subject areas
- Computer Science (miscellaneous)
- Electrical and Electronic Engineering
Cite this
“MPEG-4 Very Low Bitrate Video Coding System by Adaptively Using Sprite”. / Jinzenji, Kumi; Yashima, Yoshiyuki; Okada, Shigeki; Watanabe, Hiroshi.
In: Journal of the Institute of Image Electronics Engineers of Japan, Vol. 33, No. 3, 01.01.2004, p. 333-342.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - “MPEG-4 Very Low Bitrate Video Coding System by Adaptively Using Sprite”
AU - Jinzenji, Kumi
AU - Yashima, Yoshiyuki
AU - Okada, Shigeki
AU - Watanabe, Hiroshi
PY - 2004/1/1
Y1 - 2004/1/1
N2 - MPEG-4, a new audio-visual coding standard has strong compression tools, such as sprite coding. We have focused on sprite coding and proposed “Sprite Mode”. In sprite mode, video sequence is divided into foreground object and background object. Foreground object is compressed using MPEG-4 object coding, while background object is compressed using sprite coding. Sprite mode does not always adopt any video sequence such that images having still camera motion can be compressed in enough quality in low bitrate. So, in this paper, we developed new MPEG-4 video encoder using sprite coding. In the proposed MPEG-4 encoder, multi-mode coding is newly proposed. Video shot suitable for conventional coding method is coded by normal mode (conventional method), while video shot suitable for sprite coding is coded by sprite mode. These two modes are automatic selected in any video sequences. We improved the processing flow using stuck system in order to consequently process video such as AVI format. We improved global motion detection algorithm, foreground object and background sprite generation algorithm. Then we proposed the simple rate-control for sprite mode. Then, we have some experiment on MPEG-4 video coding. The result shows effectiveness’ of proposed encoder in low bitrate coding.
AB - MPEG-4, a new audio-visual coding standard has strong compression tools, such as sprite coding. We have focused on sprite coding and proposed “Sprite Mode”. In sprite mode, video sequence is divided into foreground object and background object. Foreground object is compressed using MPEG-4 object coding, while background object is compressed using sprite coding. Sprite mode does not always adopt any video sequence such that images having still camera motion can be compressed in enough quality in low bitrate. So, in this paper, we developed new MPEG-4 video encoder using sprite coding. In the proposed MPEG-4 encoder, multi-mode coding is newly proposed. Video shot suitable for conventional coding method is coded by normal mode (conventional method), while video shot suitable for sprite coding is coded by sprite mode. These two modes are automatic selected in any video sequences. We improved the processing flow using stuck system in order to consequently process video such as AVI format. We improved global motion detection algorithm, foreground object and background sprite generation algorithm. Then we proposed the simple rate-control for sprite mode. Then, we have some experiment on MPEG-4 video coding. The result shows effectiveness’ of proposed encoder in low bitrate coding.
KW - MPEG-4
KW - Object coding
KW - Sprite
KW - System developement
KW - Video compression
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U2 - 10.11371/iieej.33.333
DO - 10.11371/iieej.33.333
M3 - Article
AN - SCOPUS:85024746821
VL - 33
SP - 333
EP - 342
JO - Journal of the Institute of Image Electronics Engineers of Japan
JF - Journal of the Institute of Image Electronics Engineers of Japan
SN - 0285-9831
IS - 3
ER -