Constraints on Coplanar Moving Points (2008)
Sujit Kuthirummal, C. V. Jawahar, P. J. Narayanan
Abstract. Configurations of dynamic points viewed by one or more cameras have not been studied much. In this paper, we present several view and time-independent constraints on different...
Real-time Streaming and Rendering of Terrains (2008)
Soumyajit Deb, Shiben Bhattacharjee, Suryakant Patidar, P. J. Narayanan
Abstract. Terrains and other geometric models have been traditionally stored locally. Their remote access presents the characteristics that are a combination of file serving and realtime streaming...
Depth Images: Representations and Real-time Rendering (2008)
Pooja Verlani, Aditi Goswami, P. J. Narayanan
Depth Images are viable representations that can be computed from the real world using cameras and/or other scanning devices. The depth map provides 2- 1 2 D structure of the scene. A set of Depth...
Culling an Object Hierarchy to a Frustum Hierarchy (2008)
Abstract. Visibility culling of a scene is a crucial stage for interactive graphics applications, particularly for scenes with thousands of objects. The culling time must be small for it to be...
Processing (ICVGIP), 2006. • Point Based Representations for Hierarchical Environments (2008)
Jag Mohan Singh, Advisor Dean R, Jag Mohan Singh, P. J. Narayanan, Jag Mohan Singh, ...
Proc. of International Conference on Computing: Theory and
On Using Classical Poetry Structure for Indian Language Post-Processing (2008)
Anoop M. Namboodiri, P. J. Narayanan, C. V. Jawahar
Post-processors are critical to the performance of language recognizers like OCRs, speech recognizers, etc. Dictionary-based post-processing commonly employ either an algorithmic approach or a...
Sunil Mohan Ranta, Jag Mohan Singh, P. J. Narayanan
Abstract. Points, lines, and polygons have been the fundamental primitives in graphics. Graphics hardware is optimized to handle them in a pipeline. Other objects are converted to these primitives...
Point Based Representations for Hierarchical Environments ∗ (2008)
Kedarnath Thangudu, Lakshmi Gade, Jag Mohan Singh, P J Narayanan
The advent of advanced graphics technologies and improved hardware has enabled the generation of highly complex models with huge number of triangles. Point-based representations and rendering have...
Accelerating large graph algorithms on the GPU using CUDA (2008)
Abstract. Graph algorithms are fundamental to many disciplines and application areas. Large graphs involving millions of vertices are common in scientific and engineering applications. Practical-time...
VIDEO FRAME ALIGNMENT IN MULTIPLE VIEWS ABSTRACT (2008)
Sujit Kuthirummal, C. V. Jawahar, P. J. Narayanan
Many events are captured using multiple cameras today. Frames of each video stream have to be synchronized and aligned to a common time axis before processing them. Synchronization of the video...
Video Completion for Indoor Scenes (2008)
Vardhman Jain, P. J. Narayanan
Abstract. In this paper, we present a new approach for object removal and video completion of indoor scenes. In indoor images, the frames are not affine related. The region near the object to be...
Real-Time Ray-Tracing of Implicit Surfaces on the GPU (2008)
Jag Mohan Singh, P J Narayanan
The programmable graphics processor units (GPUs) have high computation capabilities but relatively limited bandwidth for data access. Compact representation of geometry using a suitable procedural or...
Recovery of Dynamic Scene Structure from Multiple Image Sequences (2008)
Peter W. R, P. J. Narayanan, Takeo Kanade
Despite significant progress in automatic recovery of static scene structure from range images, little effort has been made toward extending these approaches to dynamic scenes. This disparity is in...
Stereo Machine for Video-rate Dense Depth Mapping and (2008)
J. Schweitzer, W. Stuetzle Piecewise, T. Kanade, P. J. Narayanan, Er Virtualized, T. Kanade, ...
omnidirectional multibaseline stereo. Proceedings of IEEE
Historical Perspectives on 4D Virtualized Reality (2008)
Recording dynamic events, such as a sports event, a ballet performance, or a lecture, digitally for experiencing in a spatiotemporally distant setting requires 4D capture: three dimensions for their...
Geometric And Stochastic Error Minimisation In Motion Tracking (2008)
Karteek Alahari Sujit, Sujit Kuthirummal, C. V. Jawahar, P. J. Narayanan
Tracking has been considered to be a single view problem conventionally, where one is interested in the projections of a particular object in a view over time. Even if many views of the same event...
Building Blocks For Autonomous Navigation Using Contour (2008)
Correspondences Pawan Kumar, M. Pawan, P. J. Narayanan
We address a few problems in navigation of automated vehicles using images captured by a mounted camera. Specifically, we look at the recognition of sign boards, rectification of planar objects...
Visual Comput (2005) 21: 1--8 (2008)
Doi Original Article, P. J. Narayanan, S. K. Penta, P. J. Narayanan
Image-based rendering techniques include those with geometry and those without. Geometric information in the form of a depth map aligned with the image holds a lot of promise for IBR due to the...
RepVis: A Remote Visualization System for Large Environments (2008)
Soumyajit Deb And, Soumyajit Deb, P. J. Narayanan
Large virtual environments arise in many applications and may be used by many users simultaneously for walkthroughs. It is not feasible to store a copy of the whole environment at each of the client...
Constraints on Coplanar Moving Points (2008)
Sujit Kuthirummal Jawahar, C. V. Jawahar, P. J. Narayanan
Configurations of dynamic points in multiple views are interesting to study. In this paper, we present several view and timeindependent constraints on di#erent configurations of points moving on a...
Geometric And Stochastic Error Minimisation In Motion Tracking (2008)
Karteek Alahari Sujit, Sujit Kuthirummal, C. V. Jawahar, P. J. Narayanan
Tracking has been considered to be a single view problem conventionally, where one is interested in the projections of a particular object in a view over time. Even if many views of the same event...
Polygonal Approximation of Closed Curves across Multiple Views (2007)
M. Pawan, Kumar Saurabh, P. J. Narayanan
Polygon approximation is an important step in the recognition of planar shapes. Traditional polygonal approximation algorithms handle only images that are related by a similarity transformation. The...
FRAME ALIGNMENT USING MULTIVIEW CONSTRAINTS (2007)
Sujit Kuthirummal, C. V. Jawahar, P. J. Narayanan
suj it gdit., j awahar, pj n} i iit. net Capturing an event using multiple cameras is gaining popularity today. Simultaneously, constraints underlying multiview geometry are also being explored. The...
Progressive decomp osition of point clouds without local planes (2006)
Jag Mohan Singh, P. J. Narayanan
Abstract. We present a reordering-based procedure for the multiresolution decomposition of a point cloud in this paper. The points are first reordered recursively based on an optimal pairing. Each...
A Survey of Planar Homography Estimation Techniques (2005)
Anubhav Agarwal, C. V. Jawahar, P. J. Narayanan
The estimation of the homography between two views is a key step in many applications involving multiple view geometry. The homography exists between two views between projections of points on a 3D...
Discrete contours in multiple views: Approximation and recognition (2004)
M. Pawan Kumar, Saurabh Goyal, Sujit Kuthirummal, C. V. Jawahar, P. J. Narayanan
Recognition of discrete planar contours under similarity transformations has received a lot of attention but little work has been reported on recognizing them under more general transformations....
Planar Homography From Fourier Domain Representation (2004)
Pawan Kumar Sujit, M. Pawan Kumar, Sujit Kuthirummal, C. V. Jawahar, P. J. Narayanan
Computing the transformation between two views of a planar scene is an important step in many computer vision applications. Spatial approaches to solve this problem need corresponding sets of...
Discrete contours in multiple views: approximation and recognition (2004)
Pawan Kumar Saurabh, M. Pawan Kumar, Saurabh Goyal, Sujit Kuthirummal, C. V. Jawahar, P. J. Narayanan
Recognition of discrete planar contours under similarity transformations has received a lot of attention but little work has been reported on recognizing them under more general transformations....
Geometric Structure Computation from Conics (2004)
Pawan Kumar Mudigonda, Pawan Kumar, P. J. Narayanan
This paper presents several results on images of various configurations of conics. We extract information about the plane from single and multiple views of known and unknown conics, based on planar...
Tools for Developing OCRs for Indian Scripts (2003)
Pavan Kumar Ravikiran, S S Ravikiran, Abhishek Nayani, C V Jawahar, P J Narayanan
Development of OCRs for Indian script is an active area of activity today. Indian scripts present great challenges to an OCR designer due to the large number of letters in the alphabet, the...
P.J.: Algebraic constraints on moving points in multiple views (2002)
Sujit Kuthirummal, C. V. Jawahar, P. J. Narayanan
Multiview analysis of scenes includes the study of sceneindependent constraints satisfied by a configuration of cameras for all types of scenes as well as the study of viewindependent constraints...
P.J.: Algebraic constraints on moving points in multiple views (2002)
Sujit Kuthirummal, C. V. Jawahar, P. J. Narayanan
Multiview analysis of scenes includes the study of sceneindependent constraints satisfied by a configuration of cameras for all types of scenes as well as the study of viewindependent constraints...
Polygonal Approximation of Closed Curves across Multiple Views (2002)
M. Pawan Kumar, Saurabh Goyal, C. V. Jawahar, Kumar Saurabh, P. J. Narayanan
Polygon approximation is an important step in the recognition of planar shapes. Traditional polygonal approximation algorithms handle only images that are related by a similarity transformation. The...
Algebraic Constraints on Moving Points in Multiple Views (2002)
Sujit Kuthirummal Jawahar, C. V. Jawahar, P. J. Narayanan
Multiview analysis of scenes includes the study of sceneindependent constraints satisfied by a configuration of cameras for all types of scenes as well as the study of viewindependent constraints...
Fourier domain representation of planar curves for recognition in (2002)
Sujit Kuthirummal, C. V. Jawahar, P. J. Narayanan
www.elsevier.com/locate/patcog
www.elsevier.com/locate/patcog Generalised correlation for multi-feature correspondence (2000)
C. V. Jawahar, P. J. Narayanan
Computing correspondences between pairs of images is fundamental to all structures from motion algorithms. Correlation is a popular method to estimate similarity between patches of images. In the...
Synchronous Capture of Image Sequences from Multiple Cameras. (1997)
Narayanan, P. J., Rander, Peter, Kanade, Takeo
Several applications today need to digitally capture every frame of a video stream or a camera. These range from psychological studies to surveillance to video processing. Some applications also need...
Synchronous Capture of Image Sequences from Multiple Cameras (1995)
P. J. Narayanan, Peter R, Takeo Kanade
Several applications today need to digitally capture every frame of a video stream or a camera. These range from psychological studies to surveillance to video processing. Some applications also need...
Effective use of SIMD machines for image analysis / (1992)
Thesis (Ph. D.)--University of Maryland at College Park, 1992.