大家好：

周院长邀请的来自澳大利亚的何详健博士将于到海韵校区做报告,何博士学术造诣深厚，欢迎各位老师及同学前来交流。
时间为：12月7日下午3：00。
地点：办公楼C座505 

 Title；Hexagonal Structure for Image Processing
> Speaker: Associate Professor and Reader Xiangjian He
> Affiliation: University of Technology, Sydney
>
> Abstract
> Using hexagonal grids to represent digital images has been studied for
> more than 40 years. Increased processing capabilities of graphic devices
> and recent improvements in CCD technology have made hexagonal sampling
> attractive for practical applications and brought new interests on this
> topic. The hexagonal grid is considered to be preferable to the
> rectangular grid due to its higher symmetry, consistent connectivity and
> higher data density and is even proved to be superior to square grid in
> many applications. Since there is no mature hardware for hexagonal-based
> image capture and display, square to hexagonal image conversion has to be
> done before hexagonal-based image processing. Although hexagonal image
> representation and storage has not come to a standard, experiments based
> on existing hexagonal coordinate systems have never ceased. In this talk,
> some features of hexagonal structure will be introduced. Then, some
> typical hexagonal coordinates and addressing schemes, as well as hexagonal
> based image processing and applications, will be reviewed.