Prof. Mihaela van der Schaar Profile

Prof. Mihaela van der Schaar

at Univ of California Los Angeles

SPIE Involvement:

Author

Publications (25)

Proceedings Article | 28 January 2008 Paper

Joint scheduling and resource allocation for multiple video decoding tasks

Brian Foo, Mihaela van der Schaar

Proceedings Volume 6818, 68180A (2008) https://doi.org/10.1117/12.775125

KEYWORDS: Video, Multimedia, Video surveillance, Computer programming, Video coding, Computing systems, Computer simulations, Global Positioning System, Video compression, Video processing

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Proceedings Article | 28 January 2008 Paper

Risk-aware scheduling for multi-user video streaming over wireless multi-hop networks

Hsien-Po Shiang, Mihaela van der Schaar

Proceedings Volume 6822, 682204 (2008) https://doi.org/10.1117/12.766894

KEYWORDS: Video, Multimedia, Distortion, Knowledge management, Thulium, Relays, Error analysis, Astatine, Telecommunications, 3D video streaming

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Proceedings Article | 28 January 2008 Paper

Coalition-based multimedia peer matching strategies for P2P networks

Hyunggon Park, Mihaela van der Schaar

Proceedings Volume 6822, 682203 (2008) https://doi.org/10.1117/12.766578

KEYWORDS: Multimedia, Algorithm development, Internet, Systems modeling, Video, Lithium, Electrical engineering, Visual communications, Image processing, Lutetium

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Proceedings Article | 28 January 2008 Paper

Distributed classifier chain optimization for real-time multimedia stream mining systems

Brian Foo, Mihaela van der Schaar

Proceedings Volume 6820, 68200N (2008) https://doi.org/10.1117/12.766549

KEYWORDS: Data modeling, Systems modeling, Multimedia, Mining, Distributed computing, Analytics, Computing systems, Binary data, Astatine, Performance modeling

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Proceedings Article | 16 September 2005 Paper

ISMuS: interactive, scalable, multimedia streaming platform

Jihun Cha, Hyun-Cheol Kim, Seyoon Jeong, Kyuheon Kim, Charalampos Patrikakis, Mihaela van der Schaar

Proceedings Volume 5909, 59090A (2005) https://doi.org/10.1117/12.623709

KEYWORDS: Relays, Multimedia, Internet, Radon, Network architectures, Video coding, Visualization, Standards development, Information technology, Networks

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Proceedings Article | 14 March 2005 Paper

Generic modeling of complexity for motion-compensated wavelet video decoders

Gouri Landge, Mihaela van der Schaar, Venkatesh Akella

Proceedings Volume 5685, (2005) https://doi.org/10.1117/12.588502

KEYWORDS: Video, Wavelets, Motion models, Computer programming, Video compression, Multimedia, Data modeling, Scalable video coding, Curium, Error analysis

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Proceedings Article | 14 March 2005 Paper

Combined data partitioning and fine granularity scalability for channel adaptive video transmission

Karl Wittig, Yingwei Chen, Mihaela van der Schaar

Proceedings Volume 5685, (2005) https://doi.org/10.1117/12.585529

KEYWORDS: Video, Video coding, Computer programming, Video compression, Distortion, Stereolithography, Head, Multimedia, Motion estimation, Image compression

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Proceedings Article | 14 March 2005 Paper

A layered complexity-aware scalable video encryption scheme

Liping Guo, Mihaela van der Schaar, Debargha Mukherjee

Proceedings Volume 5685, (2005) https://doi.org/10.1117/12.586347

KEYWORDS: Video, Computer security, Scalable video coding, Multimedia encryption, Video surveillance, Video compression, Multimedia, Image encryption, Image compression, Distortion

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Proceedings Article | 2 November 2004 Paper

Optimal media sharing policies in peer-to-peer networks

Ritesh Sood, Mihaela van der Schaar

Proceedings Volume 5558, (2004) https://doi.org/10.1117/12.564454

KEYWORDS: Systems modeling, Multimedia, Distributed computing, Optimization (mathematics), Dynamical systems, Computer engineering, Computer networks, Video processing, Video, Network security

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Proceedings Article | 2 November 2004 Paper

Complexity analysis of scalable motion-compensated wavelet video decoders

Gouri Landge, Mihaela van der Schaar, Venkatesh Akella

Proceedings Volume 5558, (2004) https://doi.org/10.1117/12.583233

KEYWORDS: Wavelets, Video, Computer programming, Video coding, Scalable video coding, Spatial filters, Signal processing, Video processing, Standards development, Receivers

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Proceedings Article | 27 February 2004 Paper

A comparative study of scalable video coding schemes utilizing wavelet technology

Peter Schelkens, Yiannis Andreopoulos, Joeri Barbarien, Tom Clerckx, Fabio Verdicchio, Adrian Munteanu, Mihaela van der Schaar

Proceedings Volume 5266, (2004) https://doi.org/10.1117/12.516177

KEYWORDS: Video coding, Video, Wavelets, Standards development, Motion estimation, Scalable video coding, Discrete wavelet transforms, Video compression, Computer programming, Image quality standards

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Proceedings Article | 18 January 2004 Paper

Reduced complexity genetic algorithm for motion estimation

Rahul Khanna, Mihaela van der Schaar

Proceedings Volume 5308, (2004) https://doi.org/10.1117/12.527750

KEYWORDS: Motion estimation, Genetic algorithms, Promethium, Genetics, Phase velocity, Detection and tracking algorithms, Video, Motion detection, Cameras, Optimization (mathematics)

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Proceedings Article | 18 January 2004 Paper

Arithmetic coding with adaptive context-tree weighting for the H.264 video coders

Danny Hong, Mihaela van der Schaar, Beatrice Pesquet-Popescu

Proceedings Volume 5308, (2004) https://doi.org/10.1117/12.527156

KEYWORDS: Data modeling, Computer programming, Video, Motion models, Data compression, Video coding, Video compression, Binary data, Statistical modeling, Quantization

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Proceedings Article | 18 January 2004 Paper

Predicting optimal operation of MC-3DSBC multidimensional scalable video coding using subjective quality measurement

Yong Wang, Tian-Tsong Ng, Mihaela van der Schaar, Shih-Fu Chang

Proceedings Volume 5308, (2004) https://doi.org/10.1117/12.527413

KEYWORDS: Video, Signal to noise ratio, Scalable video coding, Distortion, Feature selection, Feature extraction, Quality measurement, Principal component analysis, Video coding, Video processing

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Proceedings Article | 23 June 2003 Paper

Adaptive overcomplete wavelet video coding with spatial transcaling

Mihaela van der Schaar, Jong Ye, Hayder Radha

Proceedings Volume 5150, (2003) https://doi.org/10.1117/12.502837

KEYWORDS: Video, Wavelets, Spatial resolution, Receivers, Motion estimation, Video coding, Temporal resolution, Digital filtering, Internet, Local area networks

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Proceedings Article | 23 June 2003 Paper

Complete-to-overcomplete discrete wavelet transforms for scalable video coding with MCTF

Yiannis Andreopoulos, Mihaela van der Schaar, Adrian Munteanu, Joeri Barbarien, Peter Schelkens, Jan Cornelis

Proceedings Volume 5150, (2003) https://doi.org/10.1117/12.509887

KEYWORDS: Discrete wavelet transforms, Video, Wavelets, Computer programming, Scalable video coding, Spatial resolution, Motion estimation, Image compression, Distortion, Video coding

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Proceedings Article | 23 June 2003 Paper

Fully scalable 3D overcomplete wavelet video coding using adaptive motion-compensated temporal filtering

Jong Ye, Mihaela van der Schaar

Proceedings Volume 5150, (2003) https://doi.org/10.1117/12.502265

KEYWORDS: Wavelets, Motion estimation, Video, Digital filtering, Wavelet transforms, Video coding, Linear filtering, Spatial resolution, Computer programming, Scalable video coding

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Proceedings Article | 7 May 2003 Paper

Differential motion vector coding for scalable coding

Deepak Turaga, Mihaela van der Schaar, Beatrice Pesquet-Popescu

Proceedings Volume 5022, (2003) https://doi.org/10.1117/12.476616

KEYWORDS: Motion estimation, Scalable video coding, Video coding, Wavelets, Distortion, Video, Linear filtering, Image filtering, Computer programming, Image processing

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Proceedings Article | 4 January 2002 Paper

Adaptive frequency weighting for fine-granularity-scalability

Sharon Peng, Mihaela van der Schaar

Proceedings Volume 4671, (2002) https://doi.org/10.1117/12.453128

KEYWORDS: Visualization, Electroluminescence, Video, Computer programming, Motion measurement, Stereolithography, Internet, Quantization, Matrices, Visual analytics

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Proceedings Article | 4 January 2002 Paper

Fine-granularity-scalability for wireless video and scalable storage

Mihaela van der Schaar, J. Meehan

Proceedings Volume 4671, (2002) https://doi.org/10.1117/12.453124

KEYWORDS: Video, Internet, Video coding, Electroluminescence, Multimedia, Forward error correction, Scalable video coding, Receivers, Signal to noise ratio, Visualization

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Proceedings Article | 29 December 2000 Paper

Fine-grained loss protection for robust Internet video streaming

Mihaela van der Schaar, Hayder Radha

Proceedings Volume 4310, (2000) https://doi.org/10.1117/12.411831

KEYWORDS: Internet, Video, Forward error correction, Electroluminescence, Video coding, Remote sensing, Multimedia, Video compression, Standards development, Structural design

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Proceedings Article | 19 April 2000 Paper

Embedded DCT and wavelet methods for fine granular scalable video: analysis and comparison

Mihaela van der Schaar-Mitrea, Yingwei Chen, Hayder Radha

Proceedings Volume 3974, (2000) https://doi.org/10.1117/12.382999

KEYWORDS: Wavelets, Signal to noise ratio, Transform theory, Video, Internet, Statistical analysis, Wavelet transforms, Image compression, Video compression, Signal analysis

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Video transmission over bandwidth-varying networks is becoming increasingly important due to emerging applications such as streaming of video over the Internet. The fundamental obstacle in designing such systems resides in the varying characteristics of the Internet (i.e. bandwidth variations and packet-loss patterns). In MPEG-4, a new SNR scalability scheme, called Fine-Granular-Scalability (FGS), is currently under standardization, which is able to adapt in real-time (i.e. at transmission time) to Internet bandwidth variations. The FGS framework consists of a non-scalable motion-predicted base-layer and an intra-coded fine-granular scalable enhancement layer. For example, the base layer can be coded using a DCT-based MPEG-4 compliant, highly efficient video compression scheme. Subsequently, the difference between the original and decoded base-layer is computed, and the resulting FGS-residual signal is intra-frame coded with an embedded scalable coder. In order to achieve high coding efficiency when compressing the FGS enhancement layer, it is crucial to analyze the nature and characteristics of residual signals common to the SNR scalability framework (including FGS). In this paper, we present a thorough analysis of SNR residual signals by evaluating its statistical properties, compaction efficiency and frequency characteristics. The signal analysis revealed that the energy compaction of the DCT and wavelet transforms is limited and the frequency characteristic of SNR residual signals decay rather slowly. Moreover, the blockiness artifacts of the low bit-rate coded base-layer result in artificial high frequencies in the residual signal. Subsequently, a variety of wavelet and embedded DCT coding techniques applicable to the FGS framework are evaluated and their results are interpreted based on the identified signal properties. As expected from the theoretical signal analysis, the rate-distortion performances of the embedded wavelet and DCT-based coders are very similar. However, improved results can be obtained for the wavelet coder by deblocking the base- layer prior to the FGS residual computation. Based on the theoretical analysis and our measurements, we can conclude that for an optimal complexity versus coding-efficiency trade- off, only limited wavelet decomposition (e.g. 2 stages) needs to be performed for the FGS-residual signal. Also, it was observed that the good rate-distortion performance of a coding technique for a certain image type (e.g. natural still-images) does not necessarily translate into similarly good performance for signals with different visual characteristics and statistical properties.

Proceedings Article | 28 December 1998 Paper

Toward a fair comparison of the coding efficiency of interlaced and progressive video

Gerard de Haan, Erwin Bellers, Mihaela van der Schaar-Mitrea

Proceedings Volume 3653, (1998) https://doi.org/10.1117/12.334706

KEYWORDS: Video, Video coding, Digital filtering, Receivers, Motion estimation, Televisions, Digital video discs, Semantic video, Computer programming, Image processing

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Proceedings Article | 28 December 1998 Paper

Novel embedded compression algorithm for memory reduction in MPEG codecs

Mihaela van der Schaar-Mitrea, Peter de With

Proceedings Volume 3653, (1998) https://doi.org/10.1117/12.334738

KEYWORDS: Image quality, Image segmentation, Quantization, Image compression, Signal to noise ratio, Computer programming, Embedded systems, Control systems, Image quality standards, Digital video discs

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Proceedings Article | 9 January 1998 Paper

Compression of mixed video and graphics images for TV systems

Mihaela van der Schaar-Mitrea, Peter de With

Proceedings Volume 3309, (1998) https://doi.org/10.1117/12.298331

KEYWORDS: Visualization, Video, Video compression, Video coding, Image compression, Detection and tracking algorithms, Quantization, Computer programming, Image segmentation, Control systems

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Showing 5 of 25 publications

Conference Committee Involvement (18)

Applications of Digital Image Processing XLII

12 August 2019 | San Diego, California, United States

Applications of Digital Image Processing XLI

20 August 2018 | San Diego, California, United States

Applications of Digital Image Processing XL

7 August 2017 | San Diego, California, United States

Applications of Digital Image Processing XXXIX

29 August 2016 | San Diego, California, United States

Applications of Digital Image Processing XXXVIII

10 August 2015 | San Diego, California, United States

Applications of Digital Image Processing XXXVII

18 August 2014 | San Diego, California, United States

Applications of Digital Image Processing XXXVI

26 August 2013 | San Diego, California, United States

Applications of Digital Image Processing XXXV

13 August 2012 | San Diego, California, United States

Applications of Digital Image Processing XXXIV

22 August 2011 | San Diego, California, United States

Applications of Digital Image Processing XXXIII

2 August 2010 | San Diego, California, United States

Applications of Digital Image Processing XXXII

3 August 2009 | San Diego, California, United States

Applications of Digital Image Processing XXXI

11 August 2008 | San Diego, California, United States

Applications of Digital Image Processing XXX

28 August 2007 | San Diego, California, United States

Applications of Digital Image Processing XXIX

15 August 2006 | San Diego, California, United States

Applications of Digital Image Processing XXVIII

2 August 2005 | San Diego, California, United States

Image and Video Communications and Processing 2005

18 January 2005 | San Jose, California, United States

Applications of Digital Image Processing XXVII

2 August 2004 | Denver, Colorado, United States

Visual Communications and Image Processing 2004

20 January 2004 | San Jose, California, United States

Showing 5 of 18 Conference Committees

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