RESEARCH@UIUC

| RESEARCH INTERESTS | THESIS PROJECTS | OTHER PROJECTS |

Computer Vision and Graphics (

RMSE- not root mean squared error):

Recognition: How to learn a model from large-scale high-dimensional visual data for object or human action classification?

Mining: How to efficiently find model samples from large-scale multidimensional data in terms of memory and computation?

Synthesis: How to generate novel samples from learned model? How to implement efficient rendering, such as scientific visualization and image-based rendering, using learned models of large-scale data in a personal computer?

Estimation: How to estimate a model with physical constraints, for example, estimate geometric and photometric models, such as 3D shape, reflectance and lighting models of real-world 3D scenes?Other Interests:

Medical image processing: X-ray and CT image restoration and enhancement, CT and Ultrasound multi-image compounding, etc.

Computational photography/videography: image/video editing, HDR image/video, etc.

Time series analysis: system monitoring, gene expression sequence analysis, etc.

CAD and geometrical modeling

Recognition:Multilinear Models

- Dimensionality reduction using Datum-as-Is representation (ICPR'04, CVPR'05)
- Face and facial expression recognition (ICCV'03)

Recognition:Probabilistic Graphical Models

- Learning human motion categories
- pLSA and LDA for human action recognition
- Motion localization in long and complex video sequences (BMVC'06, VPCVPR'06)

Mining: Find Model Samples Efficiently

- Incremental tensor subspace learning
- Efficient video retrieval for large-scale data
- Still and dynamic texture synthesis

Synthesis: Data-Driven Models for Large-Scale Image-Based Rendering

- Out-of-core tensor approximation (SIGGRAPH'05)

- Bidirectional texture function (BTF- 6D)
- Dynamic BTF(DBTF - 7D)
- Temporal volumn data (4D)
- Hierarchical Tensor Approximation (TCGA)

Estimation: Geometric and Photometric Estimation and Editing

- 3D Shape, BRDFs, and illumination estimation
- Relighting with estimation (EGSR'06, SIGGRAPH'06 Sketch)

Medical Image Processing

- Multi-Image Compounding: Ultrasound/CT Images Frequency Compounding (ICASSP'05, ICCV'05)
- Image Enhancement and Restoration (ICIP'06)
(work at Siemens Corporate Research)

Computational Videography

- VideoShop: A New Framework for Video Editing (CVPR'05, ICPR'04)
- High Dynamic Range Video: Capture and Display (OMNIVIS'05)
(work at Mitsubishi Electric Research Lab)

Time Series Analysis: A Statistical Method (under reconstruction)

- Gene Expression Sequence Analysis
- Computer System Event and Change Detection
(work at IBM Almaden Research Center)

Geometry Modeling for CAD/CAM

Updated: Jan.1, 2006