The high-frequency performance of the reflector antennas is mainly limited by the surface. It has been shown that distortions on different regions of the reflector surface can have different effects on the radiation performance. In other words, degradation of the radiation pattern due to the presence of surface distortions is sensitive to the location and behavior of the surface distortion prof...

Abstract Several different types of surface-related ornamentation that are capable distorting the perception space have been developed and used since ancient times. Some examples these di sotto in sù, quadratura , trompe l’oeil foreshortening. These techniques throw into question limits architecture our understanding thereof. However, until now, there has no clear classification or designation ...

Small distortions on the surface of sheet metal stamping parts may have significant impact on the optical appearance of the final product after finish treatment. Recently, there are considerable research activities in the development of optical methods for surface distortion measurement because of the fullfield and nondestructive nature of these methods. Optical methods such as Lights and Mirro...

A spherical map of a cortical surface is often used for improved brain registration, for advanced morphometric analysis (eg, of brain shape), and for surface-based analysis of functional signals recorded from the cortex. Furthermore, for intersubject analysis, it is usually necessary to reparameterize the surface mesh into a common coordinate system. An isometric map conserves all angle and are...