1. Journal papers (1) FGS optimization:
a、 H.-C. Huang, C. N. Wang, and Tihao Chiang, “A robust fine granularity scalability using trellis based predictive leak, “IEEE Transaction on Circuits
and Systems for Video Technology—Special Issue on Wireless Video, June 2002.
2. International conference papers (5) FGS optimization:
a、 Hsiang-Chun Huang, C.-N. Wang, and Tihao Chiang, “A robust fine granularity using trellis based predictive leak, ” in Proceeding of ISCAS02, 2002.
b、 Chung-Neng Wang et al, “Fgs-based video streaming test bed for mpeg-21 universal multimedia access with digital item adaptation, ” in Proceeding of ISCAS2003, vol.2, 2003, pp.364-367.
c、 Wen-Hsiao Peng, Chung-Neng Wang, Tihao Chiang and Hsueh-Ming Hang,
“Context-Based Binary Arithmetic Coding With Stochastic Bit Reshuffling
For Advanced Fine Granuality Scalability, ” Submitted to ISCAS2004, Oct.2003.
d、 Hsiang-Chun Huang and Tihao Chiang, “Stack Robust Fine Granularity Scalability, ” Submitted to ISCAS2004, Oct. 2003.
Fast transcoding:
a、 Y.-C. Lin, C.-N. Wang, Tihao Chiang, A. Vetro, and H.F. Sun, “Efficient FGS to Single Layer Transcoding, ” in Proceeding of ICCE02, 2002.
3. Domestic conference papers (2) FGS optimization:
a、 Hsiang-Chun Huang, C.-N. Wang, and Tihao Chiang, “MPEG-4 Streaming Video for Wireless Applications, ” in Proceeding of ICOM01 (Tainan, Taiwan), 2001.
b、 Hsiang-Chun Huang, C.-N. Wang, and Tihao Chiang, “MPEG-4 Streaming Video Profile, “ in Proceeding of Lee Center’s Workshop, 2001.
4. Patents (3)
FGS optimization:
a、 H.-C. Huang, C.-N. Wang, Tihao Chiang, and H.-M. Hang, “Architecture and Method For Fine Granularity Scalable video Coding,” Filed in U.S patent Office (IAM10/229580), August 27th, 2002.
b、 H.-C. Huang, C.-N. Wang, Tihao Chiang, and H.-M. Hang, “可調整位元流大 小的影像編解碼裝置, “Filed in R.O.C patent (091134745), 11 29
th
, 2002Fast transcoding:
a、 Y.-C. Lin, C.-N. Wang, Tihao Chiang, A. Vetro, and H.F. Sun, “Video Transcoding of Scalable Multi-Layer Videos to Single Layer Video, “Filed in U.S patent, October, 2002
5. Master thesis (2)
a、 Yao-Chung Lin and Tihao Chiang, “一個漸進精細可調層次式到單層的快速 位元流轉碼技術(An Efficient FGS to Single Layer Transcoding), “Master Thesis, Dept. of Electronics Engineering and Institute of Electronics, 2003.
b、 Zihao Liu, Tihao Chiang, and Yuang-Cheh Hsueh “一個在行動通訊環境下 基於 MPEG-7 與 JPEG2000 標準之內容擷取系統(A Content Retrieval System Based on MPEG-7 Descriptors and JPEG2000 for Mobile
Applications), “Master Thesis, Dept. of Computer and Information Science, 2003
6. MPEG contributions (8) FGS optimization:
a、 H.-C. Huang, C.-N. Wang, and Tihao Chiang, “ISO/IEC JTC1/SC 29/WG 11
14496-2 M6890: Verification Result of PFGS, ” Jan. 2001 (Pisa).
b、 H.-C. Huang, C.-N. Wang, and Tihao Chiang, “ISO/IEC JTC1/SC 29/WG 11
14496-2 M7339: Evidence for improving the existing fine granularity
scalability tool, ” July 2001 (Sydney, Australia).
c、 H.-C. Huang, C.-N. Wang, Tihao Chiang, and Hsueh-Ming Hang, “ISO/IEC JTC1/SC 29/WG 11 14496-2 M8049: A Robust Fine Granularity Scalability (RFGS) Using Predictive Leak, ” May 2002 (Fairfax, VA, USA).
d、 H.-C. Huang, C.-N. Wang, Tihao Chiang, and Hsueh-Ming Hang, “ISO/IEC JTC1/SC 29/WG 11 14496-2 M8604: H.26L-based Robust Fine Granularity Scalability (RFGS), ” July 2002.
e、 C.-N. Wang, Chia-Yang Tsai, Han-Chung Lin, Hsiao-Chiang Chuang, Yao-Chung Lin, Jin-He Chen, Kin Lam Tong, Feng-Chen Chang, Chun-Jen
Tsai, Tihao Chiang, Shuh-Ying Lee, and Hsueh-Ming Hang, “ISO/IEC JTC1/SC 29/WG 11 M8887: FGS-Based Video Streaming Test Bed for MPEG-21 Universal Multimedia Access with Digital Item Adaptation, ” Oct.
2002
f、 C.-N. Wang, Chia-Yang Tsai, Yao-Chung Lin, Han-Chung Lin, Hsiao-Chiang Chuang, Jin-He Chen, Kin Lam Tong, Feng-Chen Chang, Chun-Jen Tsai, Tihao Chiang, Shuh-Ying Lee, and Hsueh-Ming Hang, “ISO/IEC JTC1/SC 29/WG 11 M9182: FGS-Based Video Streaming Test Bed for Media Coding and Testing in Streaming Environments, ” Dec. 2002.
g、 H.-C. Huang, Wen-Hsiao Peng, C.-N. Wang, T. Chiang, and Hsueh-Ming Hang,
“ISO/IEC JTC1/SC 29/WG 11 M9767: Stack Robust Fine Granularity Scalability: Response to Call for Evidence on Scalable Video Coding, ” July 2003.
h、 Sam S Tsai, Hsueh-Ming Hang, and Tihao Chiang, “ISO/IEC JTC1/SC 29/WG 11 M9756: Motion Information Scalability for MC-EZBC: Response to Call for Evidence on Scalable Video Coding, ” July 2003.
可供推廣之研發成果資料表(一)
We proposed a novel FGS coding technique, the Robust FGS. The RFGS is a flexible framework that incorporates the ideas of leaky prediction and partial prediction. Both techniques are used to provide fast error recovery when part of the bitstream is not available. The RFGS provides tools to achieve a balance between coding efficiency, error robustness and bandwidth adaptation. The RFGS covers several well-know techniques such as MPEG-4 FGS, PFGS and MC-FGS as special cases. Because, the RFGS uses a high quality reference, it can achieve improved coding efficiency. The adaptive selection of bitplane number used for the reference frame allows three prediction techniques: intra, inter and partial inter modes. The intra mode is used to remove the drift. The inter mode is used when the bandwidth is high and the packet loss rate is low and the partial inter mode provides a balance between intra and inter modes. The used enhancement layer information in the enhancement layer prediction loop is further scaled by a leak factor
α
, where 0≤ α ≤
1 before adding to the base layer image to form the high quality reference image. Such a leak factor is also used to alleviate the error drift problem.Our experimental results show that the RFGS framework can improve the coding efficiency up to 2 dB over the MPEG-4 FGS scheme in terms of average PSNR. The error recovery capability of RFGS is verified by dropping the first P-picture of a GOV in the enhancement layer. It also demonstrated the tradeoff between coding efficiency and error attenuation that can be controlled by the value of
α
. Further optimization of the RFGS parameters is necessary to provide the best balance between coding efficiency and error resilience. The optimal bit allocation or truncation for each frame and a given average bitrate constraint is also an interesting topic for further study.可利用之產業 及 可開發之產品
1. Surveillance
2. Wireless multimedia communication 3. Video media service
4. Content providers
5. MPEG video related software encoder 6. Wireless multimedia communication 7. Video on demand
附件二
技術特點
The Robust FGS (RFGS) is a flexible framework that incorporates the ideas of leaky prediction and partial prediction. Both techniques are used to provide fast error recovery when part of the bitstream is not available. The RFGS provides tools to achieve a balance between coding efficiency, error robustness and bandwidth adaptation.
推廣及運用的價值
※ 1.每項研發成果請填寫一式二份，一份隨成果報告送繳本會，一份送 貴單位
研發成果推廣單位（如技術移轉中心）。
※ 2.本項研發成果若尚未申請專利，請勿揭露可申請專利之主要內容。
※ 3.本表若不敷使用，請自行影印使用。
可供推廣之研發成果資料表(二)
5 可申請專利 5 可技術移轉
日期：92 年 10 月 30 日
國科會補助計畫
計畫名稱：多媒體架構與數位視訊浮水印在網際網路之應用(3/3)
計畫主持人：蔣迪豪 交通大學電子工程系所 副教授
計畫編號：NSC－91-2219-E-009-043 學門領域：電信國家型
技術/創作名稱
Stack RFGS發明人/創作人
黃項群,蔣迪豪中文：
技術說明
英文：
The delivery of multimedia information to mobile device over wireless channels and/or Internet is a challenging problem because multimedia transportation suffers from bandwidth fluctuation, random errors, burst errors and packet losses. However, it is even more challenging to simultaneously stream or multicast video over Internet or wireless channels under UMA framework. The compressed video information is lost due to congestion, channel errors and transport jitters. The temporal predictive nature of most compression technology causes the undesirable effect of error propagation.
To address the broadcast or Internet multicast applications, we proposed a novel technique named Stack RFGS (SRFGS) to improved the temporal prediction of RFGS. SRFGS first simplified the RFGS prediction architecture and then generalized its prediction concept as:
the information to be coded can be inter-predicted by the information of the previous time instance at the same layer. With this concept, the RFGS architecture can be extend to multiple layers, which form the stack architecture. While RFGS can only optimize at one operating point, SRFGS can optimize at several operating point to serve much wider bandwidth with superior performance. With the biplane coding and leaky prediction that used in RFGS, SRFGS hold its fine granularity and error robustness. SRFGS can also support temporal scalability by simply dropping some B-frames in the FGS server. An optimized MB-based alpha adaptation is proposed to further improve the coding efficiency. SRFGS has been proposed to MPEG committee and has been ranked as one of the best in the Report on Call for Evidence on Scalable Video Coding.
可利用之產業 及 可開發之產品
同 RFGS 附件二
附件二
技術特點
Based on RFGS, SRFGS generalized its prediction concept and extend its architecture to multiple layers that form the stack architecture. In each layers, the information to be coded can be inter-predicted by the information of the previous time instance at the same layer. The stack concept make SRFGS can be optimized at several operating point for various applications. With the biplane coding and leaky prediction that used in RFGS, SRFGS hold its fine granularity and error robustness.
An optimized MB-based alpha adaptation is proposed to further improve the coding efficiency. The simulation results show that SRFGS has 0.4 to 3.0 dB improvement over RFGS. Further investigation of the bit allocation among each layer for various video contend may provide better coding efficiency.
推廣及運用的價值
同 RFGS
※ 1.每項研發成果請填寫一式二份，一份隨成果報告送繳本會，一份送 貴單位
研發成果推廣單位（如技術移轉中心）。
※ 2.本項研發成果若尚未申請專利，請勿揭露可申請專利之主要內容。
※ 3.本表若不敷使用，請自行影印使用。
可供推廣之研發成果資料表(三)
□ 可申請專利 5 可技術移轉
日期：92 年 10 月 30 日
國科會補助計畫
計畫名稱：多媒體架構與數位視訊浮水印在網際網路之應用(3/3)
計畫主持人：蔣迪豪 交通大學電子工程系所 副教授
計畫編號：NSC－91-2219-E-009-043 學門領域：電信國家型
技術/創作名稱
Fast FGS-to-Simple Transcoder發明人/創作人
林耀中, 王俊能, 蔣迪豪, A. Vetro, H.F. Sun 中文：技術說明
英文：
A method transcodes a compressed multi-layer video bitstream that includes a base layer bitstream and an enhancement layer bitstream.
The base and enhancement layers are first partially decoded, and then the partially decoded signals are combined with a motion compensated signal yielding a combined signal.
The combined signal is quantized into an output signal according to a quantization parameter, and the output signal is variable length encoded as a single layer bitstream. In a preprocessing step, the enhancement layer can be truncated according to rate control constraint, and the same constraints can also be used during the quantization.
可利用之產業 及 可開發之產品
1. Content providers 2. Video streaming 3. Video broadcasting 4. Video media service 5. Content providers
6. MPEG video related software encoder
技術特點
1. Fast trasncoding
2. Retained quality using a rate shape method 3. Video delivery with multiple bitstream formats
推廣及運用的價值
※ 1.每項研發成果請填寫一式二份，一份隨成果報告送繳本會，一份送 貴單位
研發成果推廣單位（如技術移轉中心）。
※ 2.本項研發成果若尚未申請專利，請勿揭露可申請專利之主要內容。
※ 3.本表若不敷使用，請自行影印使用。
附件二 附件二