Quantitative Analysis of Saliency Models

Previous saliency detection research required the reader to evaluate performance qualitatively, based on renderings of saliency maps on a few shapes. This qualitative approach meant it was unclear which saliency models were better, or how well they compared to human perception. This paper provides a quantitative evaluation framework that addresses this issue. In the first quantitative analysis of 3D computational saliency models, we evaluate four computational saliency models and two baseline models against ground-truth saliency collected in previous work.Comment: 10 page

Technical Report

This technical report is based on a dissertation submitted by the author for the degree of Doctor of Philosophy to the University of Cambridge, Wolfson Colleg

Interactive Implicit Modelling Based on C¹ Continuous Reconstruction of Regular Grids

Our goal is to provide a kernel to allow interactive and accurate modelling of volume objects. As a first step, we present a data structure for three-dimensional fields C¹ continuous in the modelling space. Regular grids storing the field values discretely are combined with a triquadratic approximation filter to define volume objects. This association of a grid and an approximation/interpolation reconstruction allows the field to be defined by a C¹ continuous real function and the surface to be directly visualised from its own equation. We show how accurate and high quality interactive visualisation is obtained during the modelling process, and we explain why the visualisation is faithful to the object definition. We also describe, as an example application of our data structure, how advanced Boolean operators realised with soft or free-form transitions are performed under the influence of an interactive modelling tool

Time-Multiplexed Color Autostereoscopic Display

A practical color autostereoscopic display has been developed at Cambridge, and has been in operation since 1994. It provides six view directions at half VGA resolution (640 240 pixels) of 24-bit color at a luminance of 100 cd/m . Each individual view direction is refreshed at standard television rates, so the display is capable of full motion animation or live 3D video. Versions with both 10 and 25 inch screen diagonal have been built. This paper describes the principles of the display, its development from an earlier monochrome version, the results of this development work, and ideas for future research