Dynamic 6DOF Metrology for Evaluating a Visual Servoing System (2009)
Tommy Chang, Tsai Hong, Michael Shneier, German Holguin, Johnny Park, Roger D. Eastman
In this paper we demonstrate the use of a dynamic, six-degree-offreedom (6DOF) laser tracker to empirically evaluate the performance of a real-time visual servoing implementation, with the objective...
1 Distributed Object Tracking Using a Cluster-Based Kalman Filter in Wireless Camera Networks (2009)
Henry Medeiros, Johnny Park, Avinash Kak
Abstract—Local data aggregation is an effective means to save sensor node energy and prolong the lifespan of wireless sensor networks. However, when a sensor network is used to track moving...
HIERARCHICAL DATA STRUCTURE FOR REAL-TIME BACKGROUND SUBTRACTION (2009)
Johnny Park, Amy Tabb, Avinash C. Kak
This paper seeks to increase the efficiency of background subtraction algorithms for motion detection. Our method uses a quadtree-base hierarchical framework that samples a small portion of the...
Youngrock Yoon, Johnny Park, Avinash C. Kak
heterogeneous distributed visual servoing system
A QOS EVALUATION TESTBED FOR MAC PROTOCOLS FOR WIRELESS CAMERA NETWORKS (2009)
Paul J. Shin, Johnny Park, Avinash C. Kak
Existing QoS metrics can only be used for wireless sensor networks when the capability of sensor nodes is limited to making simple measurements such as temperature, pressure, etc. These metrics do...
A NOVEL EVIDENCE ACCUMULATION FRAMEWORK FOR ROBUST MULTI-CAMERA PERSON DETECTION (2009)
Hidekazu Iwaki, Gaurav Srivastava, Akio Kosaka, Johnny Park, Avinash Kak
We propose a novel evidence accumulation framework that accurately estimates the positions of humans in a 3D environment. The framework consists of a network of distributed agents having different...
FrA2.2 A New Approach for Active Stereo Camera Calibration (2009)
Hyukseong Kwon, Johnny Park, Avinash C. Kak
Abstract — By active stereo we mean a stereo vision system that allows for independent panning and tilting for each of the two cameras. One advantage of active stereo in relation to regular stereo...
Paul J. Shin, Xinting Gao, Richard Kleihorst, Johnny Park, Avinash C. Kak
SIMD (Single Instruction Multiple Data) processors have been shown to possess high capability for vector-based image processing due to their massively parallel architecture. However, it is not always...
HIERARCHICAL DATA STRUCTURE FOR REAL-TIME BACKGROUND SUBTRACTION (2008)
Johnny Park, Amy Tabb, Avinash C. Kak
This paper seeks to increase the efficiency of background subtraction algorithms for motion detection. Our method uses a quadtree-base hierarchical framework that samples a small portion of the...
KAK C.: 3D Modeling of Optically Challenging Objects (2008)
Abstract—We present a system for constructing 3D models of real-world objects with optically challenging surfaces. The system utilizes a new range imaging concept called multipeak range imaging,...
Henry Medeiros, Hidekazu Iwaki, Johnny Park
We present a cluster-based distributed algorithm for calibrating large networks of wireless cameras. Due to the complex nature of sensing modality of a camera sensor, the work presented here differs...
A parallel color-based particle filter for object tracking (2008)
Henry Medeiros, Johnny Park, Avinash Kak
Porting well known computer vision algorithms to low power, high performance computing devices such as SIMD linear processor arrays can be a challenging task. One especially useful such algorithm is...
A Light-weight Event-driven Protocol for Sensor Clustering in Wireless Camera Networks (2007)
Henry Medeiros, Johnny Park, Avinash Kak
We propose a light-weight event-driven protocol for wireless camera networks to allow for formation and propagation of clusters of cameras for the purpose of collaborative processing during object...
Johnny Park, Priya C. Bhat, Avinash C. Kak
Modern navigation, mapping and surveillance systems require numerous cameras mounted at random locations over a geographically large area. In order to efficiently extract any location-specific...
Constructing three dimensional models of optically challenging real-world objects (2004)
This thesis presents a new range sensing method that is capable of constructing accurate three dimensional models of real-world objects with optically challenging surface materials. Our method...
3D Modeling of Real-World Objects Using Range and Intensity Images (2004)
Edited S. Patnaik, L. C. Jain, G. Tzafestas, V. Bannore, Johnny Park, Guilherme N. Desouza
This chapter describes the state-of-the-art techniques for constructing photo-realistic three dimensional mod-els of physical objects using range and intensity images. In general, construction of...
Specularity Elimination in Range Sensing for Accurate 3D Modeling of Specular Objects (2004)
We present a novel range sensing method that is capable of constructing accurate 3D models of specular objects. Our method utilizes a new range imaging concept called multi-peak range imaging, which...
Dual-beam structured-light scanning for 3-D object modeling (2001)
Johnny Park, Guilherme N. Desouza, Avinash C. Kak
In this paper, we present our Dual-Beam Structured-Light Scanner (DSLS), a scanning system that generates range maps much richer than those obtained from a conventional structured-light scanning...
Chemosensitivity prediction by transcriptional profiling
Staunton, Jane E., Slonim, Donna K., Coller, Hilary A., Tamayo, Pablo, Angelo, Michael J., Park, Johnny, ...
In an effort to develop a genomics-based approach to the prediction of drug response, we have developed an algorithm for classification of cell line chemosensitivity based on gene expression profiles...
Chemosensitivity prediction by transcriptional profiling
Staunton, Jane E., Slonim, Donna K., Coller, Hilary A., Tamayo, Pablo, Angelo, Michael J., Park, Johnny, ...
In an effort to develop a genomics-based approach to the prediction of drug response, we have developed an algorithm for classification of cell line chemosensitivity based on gene expression profiles...