نتایج جستجو برای: shifting mosaics

تعداد نتایج: 31488  

Journal: :Investigative ophthalmology & visual science 2014
Yerina Ji Wan-Qing Yu Yun Sung Eom Farouk Bruce Cheryl Mae Craft Norberto M Grzywacz Eun-Jin Lee

PURPOSE The array of photoreceptors found in normal retinas provides uniform and regular sampling of the visual space. In contrast, cones in retinas of the S334ter-line-3 rat model for RP migrate to form a mosaic of rings, leaving large holes with few or no photoreceptors. Similar mosaics appear in human patients with other forms of retinal dystrophy. In the current study, we aimed to investiga...

2004
A. Krtalić

The information collected through the airborne remote sensing are useful for many scientific and practical works. In order to use collected information and existing knowledge of the observed object in the most efficient way for the purpose of solving specific problems, we have to examine their characteristics and if possible fuse them. This article is motivated by the existence of two operative...

2003
Guang JIANG Yichen WEI Hung-tat TSUI Long QUAN

Concentric mosaics are low-dimensional lightfields. Yet capturing concentric mosaics requires a motor-controlled device and it is not practical for real outdoor scenes. In this paper, we propose a new concentric mosaic construction method by hand rotating an outward-looking camera. The geometry of such a capturing system is formulated as an outward-looking circular motion with unknown rotation ...

2007
Jiang Chun Shi Jiao-ying

In this paper, we present a new image based rendering technology called panoramic mosaics of slit images with depth. By limit camera motion only in a horizontal plane, a slit image with united depth value is used as the element of rendering. Compared with panorama, this method can support the movement of virtual camera. Multiple panoramic mosaics of slit images with depth can be joined up to pr...

Journal: :Genetics 1961
P ROBERTS

I N D. melanogaster, the genetic control of differentiation at specific sites is conveniently studied by the use of genetic mosaics. In wild-type flies, a definite number of macrochaetae or bristles is formed at specific sites of the thorax. Certain mutant genes are quite specific in their effects on bristle formation. The effect of achaete (ac) , for example, is primarily restricted to removal...

Journal: :Psychonomic bulletin & review 2008
Daniel I Brooks Edward A Wasserman

Same/different discrimination is a classic task for investigating relational learning in animals. Recent research suggests that pigeons can learn a trial-unique same/different discrimination, which eliminates the opportunity to memorize the training items (Brooks & Wasserman, 2008). The authors conducted three tests to elucidate the role that item-based comparison plays in this trial-unique dis...

Journal: :Network 2000
S J Eglen A van Ooyen D J Willshaw

The formation of retinal mosaics is thought to involve lateral movement of retinal cells from their clonal column of origin. The forces underlying this lateral cell movement are currently unknown. We have used a model of neurite outgrowth combined with cell movement to investigate the hypothesis that lateral cell movement is guided by dendritic interactions. We have assumed that cells repel eac...

2003
Stephan NEBIKER

This paper presents the investigation and implementation of concepts for the efficient management of very large raster and orthoimage mosaics in a database framework. The paper first identifies and discusses the key requirements of a data management solution for orthoimage mosaics. These requirements include efficient support for spatial partitioning, spatial partition indexing and access, mult...

1996
Michal Irani P Anandan Jim Bergen Rakesh Kumar Steve Hsu David Sarno

Recently, there has been a growing interest in the use of mosaic images to represent the information contained in video sequences. This paper systematically investigates how to go beyond thinking of the mosaic simply as a visualization device, but rather as a basis for an eecient and complete representation of video sequences. We describe two diierent types of mosaics called the static and the ...

Journal: :Sig. Proc.: Image Comm. 1996
Michal Irani P. Anandan James R. Bergen Rakesh Kumar Steven C. Hsu

Recently, there has been a growing interest in the use of mosaic images to represent the information contained in video sequences. This paper systematically investigates how to go beyond thinking of the mosaic simply as a visualization device, but rather as a basis for an eecient and complete representation of video sequences. We describe two diierent types of mosaics called the static and the ...

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