An X-ray contact microscopy system has been developed for the study of molecular and elemental distributions in biological specimens based on X-ray absorption characteristics. The system consists of a chamber for measuring XANES (X-ray absorption near-edge structure) of biomolecules, and a contact microscopy system for dried specimens with an electronic zooming tube. With this system the elemen...

This paper describes a localization system for mobile robots moving in dynamic indoor environments, which uses probabilistic integration of visual appearance and odometry information. The approach is based on a novel image matching algorithm for appearancebased place recognition that integrates digital zooming, to extend the area of application, and a visual compass. Ambiguous information used ...

We present a new method for detecting point matches between two images. The main issue is how to preserve the global consistency of individual matches. Existing methods propagate local smoothness by relaxation or do combinatorial search for an optimal solution. Our method imposes non-local constraints that should be approximately satisfied across the image. We define the “confidence” of such “s...

We consider the problem of searching through visualizations of large amounts of data by performing panning and zooming operations. We give algorithms to travel from a source to an unknown target using a number of pans and zooms that is competitive with the optimal number of pans and zooms depending on certain parameters, and consider both the one-dimensional and two-dimensional versions of this...

Zoom interacts strongly with both vision and control processes in an active visual system, causing problems for many commonly used tracking methods. This paper demonstrates the use of affine transfer to track while zooming, using clusters of corner features. Affine transfer not only is fundamentally invariant to zoom but also provides a natural mechanism to allow features to appear and disappea...

We investigate realtime techniques for visualization of very large images over a thinwire. We exploit multi-foveated images which have extremely favorable data density, as compared to uniform resolution images. To compensate for the loss of uniform resolution, we now allow the user new dynamic controls over the visualization process. Current servers of large images on the net (e.g., map servers...

We consider the problem of obtaining the 3D trajectory of a ball from a sequence of images taken with a camera which is possibly rotating and zooming (but not translating). Techniques are developed to compute the component of image motion of the ball due to camera rotation and zoom, using optic flow. The 3D location of the ball in each frame of the sequence is then determined using a novel geom...

In this paper we analysis monocular sport videos, digitized from old VHS tape, where players and camera are moving. It is very difficult to recover 3D information of the scene from these sequences, due to noisy measurements, low quality of the images, very small translation of the camera and almost no information concerning its parameters. Classic stereo algorithms are not always suitable and p...

A motion compensated de-interlacing method wirh adaptive global motion estimation and compensation is proposed to recover the defects of interlaced video sequence with camera panning, rotating or zooming. GME and GMC are used Io recover the change of the whole picture due to camera motions. Two local motion compensated de-interlacing methods are proposed and applied to de-interlace interlaced v...

Image interpolation is a procedure used in expanding and contracting digital images. Image interpolation is referred by various terminologies such as image scaling, image resizing, image resampling, digital zooming, image magnification or enhancement. Image interpolation is widely used in many consumer application devices such as charge-coupled device (CCD) camera, closed circuit television (CC...