This paper presents an algorithm for image registration and mosaicing on underwater sonar image sequences characterized by a high noise level, inhomogeneous illumination and low frame rate. Imaging geometry of acoustic cameras is significantly different from that of pinhole cameras. For a planar surface viewed through a pinhole camera undergoing translational and rotational motion, registration...

We describe a theoretically optimal algorithm for computing the homography between two images in relation to image mosaicing applications. First, we derive a theoretical accuracy bound based on a mathematical model of image noise and do simulation to con rm that our renormalization technique e ectively attains that bound; our algorithm is optimal in that sense. Then, we apply our technique to m...

Counting benthic species from sea floor imagery is useful for evaluating the state of the local ecosystem. These images being taken by digital still Cameras mounted on ROVs (Remote Operating Vehicles) are used to capture images of animals on the seabed. The overlap between images must be detected in order to eliminate the possibility of counting the same individual more than once. In order to p...

This research presents a 3D gestural interface for collaborative concatenative sound synthesis and audio mosaicing. Our goal is to improve the communication between the audience and performers by means of an enhanced correlation between gestures and musical outcome. Nuvolet consists of a 3D motion controller coupled to a concatenative synthesis engine. The interface detects and tracks the perfo...

In this paper we describe the development of a robotically-assisted image mosaicing system for medical applications. The processing occurs in real-time due to a fast initial image alignment provided by robotic position sensing. Near-field imaging, defined by relatively large camera motion, requires translations as well as pan and tilt orientations to be measured. To capture these measurements w...

The generation of high-resolution mosaics from multiple images is presented. The estimation of the high-resolution signal utilizes a motion-compensated filtering approach for video frames that are affected by spatial aliasing. For that, global motion models and the corresponding estimation algorithms are employed to provide a very accurate and continuous description of sub-pixel motion for the ...

Microendoscopes allow clinicians to view subcellular features in vivo and in real-time, but their field-of-view is inherently limited by the small size of the probe's distal end. Video mosaicing has emerged as an effective technique to increase the acquired image size. Current implementations are performed post-procedure, which removes the benefits of live imaging. In this manuscript we present...