In this paper we demonstrate four real-time reactive responses to movement in everyday scenes using an active head/eye platform. We first describe the design and realization of a high bandwidth four degree-of-freedom head/eye platform and visual feedback loop for the exploration of motion processing within active vision. The vision system divides processing into two scales and two broad functio...

BACKGROUND Objective, quantitative, segmental noninvasive/bedside measurement of cardiac motion is highly desirable in cardiovascular medicine, but current technology suffers from significant drawbacks, such as subjectivity of conventional echocardiographic reading, angle dependence of tissue Doppler measurements, radiation exposure by computer tomography, and infrastructure requirements in MRI...

This special issue contains extended versions of the best papers of the two " Beyond Patches " workshops we ran in 2006 and 2007 IEEE Conferences on Computer Vision and Pattern Recognition (CVPR). In addition, some specially solicited papers have also been included which were not part of these two workshops but do highlight and reinforce the motivation and philosophy of these workshops. We refe...

Abstract: Image feature detection is a fundamental issue in many intermediate level vision problems such as stereo, motion correspondence, image registration, and object recognition. In this paper we present an approach to feature detection based on a scale-interaction model. This feature detector is responsive to short lines, line endings, corners and other such sharp changes in curvature. We ...

Early vision algorithms map naturally on distributed physical systelTIS configured to process signals in continuous time and to act on analog image values. Using analog very large scale integrated technology, we have constructed prototypes of several experimental systems that implement biologically inspired image processing functions, including edge enhancement, centroid computation, and image ...

The analysis of deformable objects which have a high-degree of freedom has long been encouraged by numerous researchers because it can be applied to such diverse areas as medical engineering, video surveillance and monitoring, Human Computer Interaction, browsing of video databases, interactive gaming and other growing applications. Within the computerized environments, the systems are largely ...

1. Abstract Estimation of image motion, also known as the optic ow, from a sequence of images is known to be diicult. This is due to: the sensitivity of the image motion model to noise (the derivative property), the limited observability of the image motion from the luminance (the aperture problem), and, the non-validity of the optic ow constraint (the assumption of intensity conservation). In ...

This paper addresses the problem of performing navigation with a mobile robot using active vision exploring the image sphere properties in a stereo divergent configuration. The navigational process is supported by the control of the robot's steering and forward movements just using visual information as feedback. The steering control solution is based on the difference between signals of visual...

The problem of estimating motion and structure from a sequence of images has been a major research theme in machine vision for many years and remains one of the most challenging ones. In this work, a new approach to this problem is presented; using sliding mode observers to estimate the motion and structure of a moving body with the aid of a CCD camera. A variety of dynamical systems which may ...