We present an optimization framework for expressing image processing applications that can account for three perceptual biases of the human visual system (HVS) already well-known in the perception literature. (1) The perception literature is ripe with studies demonstrating the HVS to be more sensitive to local pixel gradients than absolute pixel values, which has led to some important work in g...

We present an optimization framework for expressing image processing applications that can account for certain perceptual biases of the human vision system (HVS). Perception literature is ripe with studies demonstrating the HVS to be more sensitive to pixel gradients than absolute pixel values, which has led to some important work in gradient domain image filtering. Inspired by this work, our o...

Telemedicine is growing and there is an increased demand for faster image processing and transmitting diagnostic medical images. Identifying and extracting the region of interest (ROI) accurately is an important step before coding and compressing the image data for efficient transmission or storage. The usual approach to extract ROI is to apply contour segmentation method. Chan-Vese active cont...

We propose a new measure of perceptual saliency and quantitatively compare its ability to detect natural shapes in cluttered backgrounds to ve previously proposed measures. As deened in the new measure, the saliency of an edge is the fraction of closed random walks which contain that edge. The transition-probability matrix deening the random walk between edges is based on a distribution of natu...

completion elds: A neural model of illusory contour shape and salience. eferences 123 OPR78] R. Ohlander, K. Price, and D. R. Reddy. Picture segmentation using a recursive region splitting method. Sau92] E. Saund. Labeling of curvilinear structure across scales by token grouping. In CVPR, pages 257{263, 1992. SB93] S. Sarkar and K. L. Boyer. Perceptual organization in computer vision: a review ...

We address the problem of multiple view stereo from a perceptual organization perspective. Currently, the leading methods in the field are volumetric. They operate at the level of scene voxels and image pixels, without considering the structures depicted in them. On the other hand, many perceptual organization methods for binocular stereo are not extensible to more images. We present an approac...

This research introduces a mode-specific model of visual saliency that can be used to highlight likely lesion locations and potential errors (false positives and false negatives) in single-mode PET and MRI images and multi-modal fused PET/MRI images. Fused-modality digital images are a relatively recent technological improvement in medical imaging; therefore, a novel component of this research ...

The aim of this study is threefold: firstly, to describe the acquisition patterns of Greek past tense by children with Specific Language Impairment (SLI); secondly, to investigate the relationship between the phonological salience of past tense in Greek and its acquisition by language impaired learners; thirdly, to establish an account on the nature of the impairment by comparing the acquisitio...