Storefront brand image (logo) recognition has many useful applications such as location recognition and advertisement. Various methods have been proposed using local and global feature matching. However, it continues to be a challenging area; unlike nature scene images, which are rich in texture details, brand images often lack texture variation, and therefore provide fewer feature points for m...

A system for realtime terrain triangulation is presented which allows fully user controllable and smooth level of detail transitions. To accomplish this as well as to ooer the possibility of data compression, the terrain elevation data is hierarchically interpolated. The interpolation error, the so called hierarchical surplus, is used as a criterion to detect redundant data and serves as a way ...

We investigate the minimum cases for realtime probabilistic machines that can define uncountably many languages with bounded error. We show that logarithmic space is enough for realtime PTMs on unary languages. On binary case, we follow the same result for double logarithmic space, which is tight. When replacing the worktape with some limited memories, we can follow uncountable results on unary...