Introduction: Bunched Phase Encoding (BPE) is a new type of fast data acquisition method in MRI that takes advantage of zigzag k-space trajectories along the PE direction (Fig.1)[1,2]. Sampling frequency of BPE is higher than that of normal acquisition. Since BPE acquisition scheme is comparable to acquiring multiple PE lines in a single readout, the total number of TR cycles and hence the scan...

High-quality shadow anti-aliasing is a challenging problem in shadow mapping. Revectorization-based shadow mapping (RBSM) minimizes shadow aliasing by revectorizing the jagged shadow edges generated with shadow mapping, keeping low memory footprint and real-time performance for the shadow computation. However, the current implementation of RBSM is not so well optimized because its visibility fu...

This paper describes the Advanced Image Display Architecture, AIDA. The primary aims were to design a graphics display subsystem capable of satisfying the needs of both high performance workstations and vehicle simulator visual systems. AIDA can accept planar triangle primitives which have been transformed, clipped and projected by preceding stages. The system implements many desirable features...

In the present study, we aim at on-line planning for realtime navigation of a mobile robot. To realize this, we consider map formation in an unknown environment and an on-line path search on the obtained map. In the map learning process, the symbol map is constructed by the allocation of a location symbol based on the discretization of the range sensor signal and the association of the neighbor...

Object-oriented programming relies on sharing and the mutable states of objects for common data structures, patterns and programming idioms. Sharing and mutable state is a powerful but dangerous combination. Uncontrolled aliasing risks causing representation exposure, where an object’s state is exposed and modifiable out of the control of its conceptually owning object. This breaks encapsulatio...

ABSTRACT Changing resolution of images is a common operation. It is also common to use simple, i.e., small interpolation kernels satisfying some ”smoothness” qualities that are determined in the spatial domain. Typical applications use linear interpolation or piecewise cubic interpolation. These are popular since the interpolation kernels are small and the results are acceptable. However, since...

This paper introduces an algorithm that, given the geometry and surface characteristics of an object (the Phong highlight model is assumed), detects when specular or highlight aliasing is expected and indicates the correct sampling rate to eliminate it. This is accomplished by noting the geometric properties of the surface, the direction and distances to the eye and light sources, and the specu...

We describe a new formulation of appearance-only SLAM suitable for very large scale place recognition. The system navigates in the space of appearance, assigning each new observation to either a new or a previously visited location, without reference to metric position. The system is demonstrated performing reliable online appearance mapping and loop-closure detection over a 1000 km trajectory,...

The design of an Adaptive Optics (AO) Structured Illumination (SI) microscope is presented. Two key technologies are combined to provide effective super-resolution at significant depths in tissue. AO is used to measure and compensate for optical aberrations in both the system and the tissue by measuring the optical path differences in the wavefront. Uncorrected, these aberrations significantly ...

Texture mapping is a fundamental feature of computer graphics image generation. In current PC based acceleration hardware, MIP-mapping with bilinear and trilinear filtering are commonly used filtering techniques for reducing spatial aliasing artifacts. The effectiveness of these techniques in reducing image aliasing at the expense of blurring is dependent upon the MIP-map level selection and th...