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17 Result(s)
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Tsuhan Chen
Engineering
Signal, Image and Speech Processing
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Article
Open AccessSubgraphs Matching-Based Side Information Generation for Distributed Multiview Video Coding
We adopt constrained relaxation for distributed multiview video coding (DMVC). The novel framework integrates the graph-based segmentation and matching to generate interview correlated side information without...
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Article
Open AccessPatches in Vision
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Article
Open AccessUnsupervised Modeling of Objects and Their Hierarchical Contextual Interactions
A successful representation of objects in literature is as a collection of patches, or parts, with a certain appearance and position. The relative locations of the different parts of an object are constrained ...
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Article
Open AccessSearch and Retrieval of 3D Content and Associated Knowledge Extraction and Propagation
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Article
Open AccessAdaptive Markov Random Fields for Example-Based Super-resolution of Faces
Image enhancement of low-resolution images can be done through methods such as interpolation, super-resolution using multiple video frames, and example-based super-resolution. Example-based super-resolution, i...
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Chapter
Light Field Spectral Analysis
As illustrated in Chapter 1, light field is a four-dimensional signal recording the light rays in the space. The goal of light field spectral analysis is to compute the Fourier transform of the light field sig...
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Chapter
The Freeform Sampling Framework
In the previous chapters, we studied the uniform sampling of the light field data using the traditional Fourier transform based sampling analysis method. Such analysis may provide a general guidance on how a s...
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Chapter
The Self-Reconfigurable Camera Array
In this chapter, we present a self-reconfigurable camera array system, which captures video sequences from an array of mobile cameras, renders novel views on the fly, and reconfigures the camera positions to a...
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Chapter
The Light Field
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Chapter
Light Field Uniform Sampling
The spectrum analysis discussed in the previous chapter lays the foundation of light field sampling. The next step is to sample the light field according to the spectrum and make sure there is no aliasing duri...
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Chapter
Light Field Active Sampling
In this chapter, we will apply the active sampling framework in Chapter 4 for the light field. We first discuss the local consistency score of light field applications in Section 5.1. Active incremental sampli...
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Chapter
The Light Field
This book sets out to address the following two questions:
How many images are needed for IBR? If such a number is limited, where shall we capture these images?
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Book
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Article
Fine-Grained Rate Sha** for Video Streaming over Wireless Networks
Video streaming over wireless networks faces challenges of time-varying packet loss rate and fluctuating bandwidth. In this paper, we focus on streaming precoded video that is both source and channel coded. Dy...
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Article
On Probability Density for Modeling Video Traffic
Accurate models for variable bit rate (VBR) video traffic need to allow for different frame types present in the video, different activity levels for different frames, and a variable group of pictures (GOP) st...
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Article
Lightweight Floating-Point Arithmetic: Case Study of Inverse Discrete Cosine Transform
To enable floating-point (FP) signal processing applications in low-power mobile devices, we propose lightweight floating-point arithmetic. It offers a wider range of precision/power/speed/area trade-offs, but...
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Article
Audio Feature Extraction and Analysis for Scene Segmentation and Classification
Understanding of the scene content of a video sequence is very important for content-based indexing and retrieval of multimedia databases. Research in this area in the past several years has focused on the use...
