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Displaying 1-26 out of 26 total
A Component-Wise Analysis of Constructible Match Cost Functions for Global Stereopsis
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Daniel Neilson,Yee-Hong Yang
Issue Date:November 2011
pp. 2147-2159
Match cost functions are common elements of every stereopsis algorithm that are used to provide a dissimilarity measure between pixels in different images. Global stereopsis algorithms incorporate assumptions about the smoothness of the resulting distance ...
 
Aura 3D Textures
Found in: IEEE Transactions on Visualization and Computer Graphics
By Xuejie Qin, Yee-Hong Yang
Issue Date:March 2007
pp. 379-389
<p><b>Abstract</b>—This paper presents a new technique, called aura 3D textures, for generating solid textures based on input examples. Our method is fully automatic and requires no user interactions in the process. Given an input texture...
 
Disparity Flow Estimation using Orthogonal Reliability-based Dynamic Programming
Found in: Pattern Recognition, International Conference on
By Minglun Gong, Yee-Hong Yang
Issue Date:August 2006
pp. 70-73
Disparity flow depicts the 3D motion of a scene in disparity space of a given view and can be considered as view-dependent scene flow. The disparity flow map of a given view is a 2D array of 3D vectors that depicts the 3D motion observed at different pixel...
 
First Sight: A Human Body Outline Labeling System
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Maylor K. Leung, Yee-Hong Yang
Issue Date:April 1995
pp. 359-377
<p><it>Abstract</it>—First Sight, a vision system in labeling the outline of a moving human body, is proposed in this paper. The emphasis of First Sight is on the analysis of motion information gathered solely from the outline of a moving...
 
Recovering Dense Stereo Depth Maps Using a Single Gaussian Blurred Structured Light Pattern
Found in: 2013 International Conference on Computer and Robot Vision (CRV)
By Xida Chen,Yee-Hong Yang
Issue Date:May 2013
pp. 295-302
In this paper, we present a new single shot structured light method to recover dense depth maps. Contrary to most temporal coding methods which require projecting a series of patterns, our method needs one color pattern only. Unlike most single shot spatia...
 
Quasi-dense Correspondence in Stereo Images Using Multiple Coupled Snakes
Found in: 2013 International Conference on Computer and Robot Vision (CRV)
By Xida Chen,Yee-Hong Yang
Issue Date:May 2013
pp. 202-209
In this paper, we present a new method to establish quasi-dense correspondence between a pair of stereo images without camera calibration. Our proposed method is based on the traditional snake formulation using an energy function. The energy function incor...
 
Refractive Epipolar Geometry for Underwater Stereo Matching
Found in: Computer and Robot Vision, Canadian Conference
By Jason Gedge, Minglun Gong, Yee-Hong Yang
Issue Date:May 2011
pp. 146-152
A fundamental component of stereo vision is that of epipolar geometry. It tells us that the corresponding point of a pixel in one image is restricted to a line in another image. This constraint reduces both the complexity of finding stereo correspondences ...
 
Efficient Geometric, Photometric, and Temporal Calibration of an Array of Unsynchronized Video Cameras
Found in: Computer and Robot Vision, Canadian Conference
By Cheng Lei, Yee-Hong Yang
Issue Date:May 2009
pp. 162-169
Camera-arrays have become popular in many computer vision and computer graphics applications. Among all preprocessing steps, an efficient method to calibrate a large number of cameras is very much desired. The required calibration includes both the geometr...
 
Near-Real-Time Image Matting with Known Background
Found in: Computer and Robot Vision, Canadian Conference
By Minglun Gong, Yee-Hong Yang
Issue Date:May 2009
pp. 81-87
This paper presents a novel matting algorithm for handling cases where foreground objects are in front of complex (non-smooth) but known background. The algorithm is based on a Poisson equation that takes the gradient of the known background into considera...
 
Feature based classification of computer graphics and real images
Found in: Acoustics, Speech, and Signal Processing, IEEE International Conference on
By Gopinath Sankar, Vicky Zhao, Yee-Hong Yang
Issue Date:April 2009
pp. 1513-1516
Photorealistic images can now be created using advanced techniques in computer graphics (CG). Synthesized elements could easily be mistaken for photographic (real) images. Therefore we need to differentiate between CG and real images. In our work, we propo...
 
Evaluation of constructable match cost measures for stereo correspondence using cluster ranking
Found in: Computer Vision and Pattern Recognition, IEEE Computer Society Conference on
By Daniel Neilson, Yee-Hong Yang
Issue Date:June 2008
pp. 1-8
Stereo correspondence research often involves the comparison of techniques to determine which are better under different circumstances. The methods of comparison employed often take the form of applying the techniques to a few stereo image pairs with the t...
 
Real-time Multi-view Stereo Algorithm using Adaptive-weight Parzen Window and Local Winner-take-all Optimization
Found in: Computer and Robot Vision, Canadian Conference
By Yilei Zhang, Minglun Gong, Yee-Hong Yang
Issue Date:May 2008
pp. 113-120
This paper presents a real-time multi-view stereo algorithm, which is based on local winner-take-all optimization. When computing the disparity maps for a given view, the algorithm performs 3 steps: cost volume generation, cost volume merging, and disparit...
 
Region-Tree Based Stereo Using Dynamic Programming Optimization
Found in: Computer Vision and Pattern Recognition, IEEE Computer Society Conference on
By Cheng Lei, Jason Selzer, Yee-Hong Yang
Issue Date:June 2006
pp. 2378-2385
In this paper, we present a novel stereo algorithm that combines the strengths of region-based stereo and dynamic programming on a tree approaches. Instead of formulating an image as individual scan-lines or as a pixel tree, a new region tree structure, wh...
 
Fast Unambiguous Stereo Matching Using Reliability-Based Dynamic Programming
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Minglun Gong, Yee-Hong Yang
Issue Date:June 2005
pp. 998-1003
An efficient unambiguous stereo matching technique is presented in this paper. Our main contribution is to introduce a new reliability measure to dynamic programming approaches in general. For stereo vision application, the reliability of a proposed match ...
 
Frequency-Based Environment Matting
Found in: Computer Graphics and Applications, Pacific Conference on
By Jiayuan Zhu, Yee-Hong Yang
Issue Date:October 2004
pp. 402-410
Environment matting is a technique to extract the environment matte which is used to describe how an object reflects and refracts the environment light. In this paper, we propose a novel environment matting method to obtain the environment matte of a real ...
 
Similarity Measure and Learning with Gray Level Aura Matrices (GLAM) for Texture Image Retrieval
Found in: Computer Vision and Pattern Recognition, IEEE Computer Society Conference on
By Xuejie Qin, Yee-Hong Yang
Issue Date:July 2004
pp. 326-333
In this paper, we present a new similarity measure for texture images based on the gray level aura matrices (GLAM), originally proposed by Elfadel and Picard for modeling textures. With the new similarity measure, a support vector machine (SVM) is used to ...
 
Fast Stereo Matching Using Reliability-Based Dynamic Programming and Consistency Constraints
Found in: Computer Vision, IEEE International Conference on
By Minglun Gong, Yee-Hong Yang
Issue Date:October 2003
pp. 610
A method for solving binocular and multi-view stereo matching problems is presented in this paper. A weak consistency constraint is proposed, which expresses the visibility constraint in the image space. It can be proved that the weak consistency constrain...
 
Variance Invariant Adaptive Temporal Supersampling for Motion Blurring
Found in: Computer Graphics and Applications, Pacific Conference on
By Daniel Neilson, Yee-Hong Yang
Issue Date:October 2003
pp. 67
Adaptive temporal sampling, used to create motion blur in distributed ray tracing, generates more sample points in regions with motion blur than in regions without motion blur. When the number of sample points used on stationary objects in regions with mot...
 
Multi-Resolution Genetic Algorithm and Its Application in Motion Estimation
Found in: Pattern Recognition, International Conference on
By Minglun Gong, Yee-Hong Yang
Issue Date:August 2002
pp. 10644
Many computer vision problems can be formulated into optimization problems. In this paper, we propose a multi-resolution genetic algorithm, which can be applied to solving many of these problems. The motion estimation problem is used as a vehicle for demon...
 
Multiple Illuminant Direction Detection with Application to Image Synthesis
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Yufei Zhang, Yee-Hong Yang
Issue Date:August 2001
pp. 915-920
<p><b>Abstract</b>—In the early 1980s, Pentland observed that the human's eye is sensitive to the change of intensities. On an image of a smooth surface, the change of intensities is maximal whenever the illuminant direction is perpendicu...
 
Illuminant Direction Determination for Multiple Light Sources
Found in: Computer Vision and Pattern Recognition, IEEE Computer Society Conference on
By Yufei Zhang, Yee-Hong Yang
Issue Date:June 2000
pp. 1269
In this paper, a novel scheme of extracting multiple illuminant directions from an image of a Lambertian sphere of known size is proposed. The illuminant direction detection process is based on the concept of critical points introduced in the paper. We sho...
 
Underwater Camera Calibration Using Wavelength Triangulation
Found in: 2013 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)
By Timothy Yau,Minglun Gong,Yee-Hong Yang
Issue Date:June 2013
pp. 2499-2506
In underwater imagery, the image formation process includes refractions that occur when light passes from water into the camera housing, typically through a flat glass port. We extend the existing work on physical refraction models by considering the dispe...
 
Using a Raster Display for Photometric Stereo
Found in: Computer and Robot Vision, Canadian Conference
By Nathan Funk, Yee-Hong Yang
Issue Date:May 2007
pp. 201-207
This paper presents a new controlled lighting apparatus which uses a raster display device as a light source. The setup has the advantage over other alternatives in that it is relatively inexpensive and uses commonly available components. The apparatus is ...
 
Object class detection: A survey
Found in: ACM Computing Surveys (CSUR)
By Chao Gao, Xin Zhang, Yee-Hong Yang, Hui Wang, Zhiguang Han
Issue Date:October 2013
pp. 1-53
Object class detection, also known as category-level object detection, has become one of the most focused areas in computer vision in the new century. This article attempts to provide a comprehensive survey of the recent technical achievements in this area...
     
Music-driven character animation
Found in: ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
By Danielle Sauer, Yee-Hong Yang
Issue Date:October 2009
pp. 1-16
Music-driven character animation extracts musical features from a song and uses them to create an animation. This article presents a system that builds a new animation directly from musical attributes, rather than simply synchronizing it to the music like ...
     
Real-time backward disparity-based rendering for dynamic scenes using programmable graphics hardware
Found in: Proceedings of the 2007 Conference on Graphics Interface (GI '07)
By Cheng Lei, Jason M. Selzer, Minglun Gong, Yee-Hong Yang
Issue Date:May 2007
pp. 241-248
This paper presents a backward disparity-based rendering algorithm, which runs at real-time speed on programmable graphics hardware. The algorithm requires only a handful of image samples of the scene and estimated noisy disparity maps, whereas most existi...
     
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