• Publications
  • Influence
Parsing scale-space and spatial stability analysis
tl;dr
We present a new method for parsing scale-space, spatial stability analysis, that allows the localization of region boundaries from scale space. Expand
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Discrimination thresholds in the two-dimensional spatial frequency domain
In two experiments we have determined the discriminability between two sinusoidal gratings as a function of orientation and spatial frequency differences. Twelve orientation (15 degrees steps) andExpand
  • 80
  • 5
Ecological fingerprinting of ecosystem succession: Estimating secondary tropical dry forest structure and diversity using imaging spectroscopy
Abstract We evaluated the use of EO-1 Hyperion hyperspectral satellite imagery for mapping structure and floristic diversity in a Neotropical tropical dry forest as a way of assessing a region'sExpand
  • 115
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Hyperspectral discrimination of tropical dry forest lianas and trees : Comparative data reduction approaches at the leaf and canopy levels
A dataset of spectral signatures (leaf level) of tropical dry forest trees and lianas and an airborne hyperspectral image (crown level) are used to test three hyperspectral data reduction techniquesExpand
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  • Open Access
Discrimination of lianas and trees with leaf-level hyperspectral data
Lianas are an important component of the biological diversity in two tropical forests with contrasting moisture regimes in Panama. However, their presence in a tree crown may be a source of confusionExpand
  • 102
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Inverting an illumination model from range and intensity maps
Abstract We propose a solution to the problem of determining surface material properties from range and intensity data using a simplified version of the Torrance-Sparrow illumination model. TheExpand
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Estimating leaf area index from satellite imagery using Bayesian networks
tl;dr
In this study, we investigated the use of Bayesian networks for inferring tropical dry forest leaf area index (LAI) from satellite imagery in dry and wet seasons. Expand
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Three processing characteristics of visual texture segmentation.
  • T. Caelli
  • Psychology, Medicine
  • Spatial vision
  • 1985
Three mechanisms are outlined which are sufficient to determine texture segmentation or discrimination. They are: (1) convolution of detector profiles with the input image; (2) impletion, where theExpand
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  • Open Access
Subjective Lorentz transformations and the perception of motion.
It has been known for some 40 years that the perceived velocity of a moving object does not correspond to its physical velocity. It is also known that the perceived length and temporal duration of aExpand
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The Application of Remote Sensing for Detecting Mass Graves: An Experimental Animal Case Study from Costa Rica *
Abstract:  Detection of mass graves utilizing the hyperspectral information in airborne or satellite imagery is an untested application of remote sensing technology. We examined the in situ spectralExpand
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