Mapping Textures on 3D Terrains: A Hybrid Cellular Automata Approach. (December 2005) Swapnil Sinvhal, B.Arch., Indian Institute of Technology, Roorkee, India Chair of Advisory Committee: Dr. John Keyser It is a time consuming task to generate textures for large 3D terrain surfaces in computer games, flight simulations and computer animations. This work explores the use of cellular automata in ...

This study investigates the effect of update rate on the quality of haptic virtual textures, with the goal to develop a guideline for choosing an optimal update rate for haptic texture rendering. Two metrics, control stability and perceived quality of the virtual haptic texture, were used. For control stability, we examined the effect of update rate on the “buzzing” of virtual haptic textures. ...

Texture plays an important part in many Content Based Image Retrieval systems. This paper describes the results from a human study, which asked 30 volunteers to classify images from the Brodatz Textures album. We use these results to derive a subset which show good agreement among the different individuals. The results for this subset were used to evaluate the retrieval performance of a range o...

22 Recently, the deterministic tourist walk has emerged as a novel approach for texture analysis. This 23 method employs a traveler visiting image pixels using a deterministic walk rule. Resulting trajectories 24 provide clues about pixel interaction in the image that can be used for image classification and identifi25 cation tasks. This paper proposes a new walk rule for the tourist which is b...

Study of different patterns on a local neighborhood of a texture plays an important role in characterization, and classification of the textures. Many preprocessing steps are used in the generation of textures for a better quality. The present paper studies how the percentage of occurrence factor of a typical pattern varies after applying various local preprocessing steps. For this eight simple...

Texture is one of most popular features for image classification and retrieval. Forasmuch as grayscale textures provide enough information to solve many tasks, the color information was not utilized. But in the recent years, many researchers have begun to take color information into consideration. In the texture analysis field, many algorithms have been enhanced to process color textures and ne...

A computational approach for analyzing visible textures is described. Textures are modeled as irradiance patterns containing a limited range of spatial frequencies, where mutually distinct textures differ significantly in their dominant characterizing frequencies. By encoding images into multiple narrow spatial frequency and orientation channels, the slowly-varying channel envelopes (amplitude ...

In this work we show how the variability of visualization methods like textures and glyphs can be used to enhance established methods like topology. A topology-based segmentation (Auer et al., 2011) serves as framework to map textures and place glyph exponents for two dimensional symmetric tensor fields. The textures encode physical properties of the underlying field and support the understandi...

rainfall erosion processes a long with the rainfall characteristics can be affected by soil properties. the study was conducted to investigate the susceptibility of the aggregates in different soil textures to the rainfall erosion processes. the experiment was done on thirty soil samples recognized in four soil textures with different replications as the completely randomized design. ninety box...

bam, which is located in the south eastern part of iran, east of kerman province, is a desert city with its special natural and cultural landscapes, which is different in many ways from all other desert cities in iran .there has always been a balance between cultural and natural elements in bam. one of the unique natural elements of bam is its rich underground water reservoirs, which originates...