We examine the mechanism that subserves visual contour detection and particularly its tuning for the spatial frequency of contour components. We measured the detection of contours composed of Gabor micropatterns within a field of randomly oriented distractor elements. Distractors were randomly assigned one of two spatial frequencies, and elements lying along the contour alternated between these...

This paper presents speciications of systolic algorithms in a parallel functional language SysLucid. The language extends conventional functional languages by allowing meanings of program elements, such as variables or expressions , to vary in a context space consisting of temporal and spatial dimensions. In specifying systolic algorithms, the spatial dimensions represent the processor coordina...

metropolitan regions as a result of the steady stream of urbanization in industrial period which have occurred during 20th century, become the engine of countries growth and development. in the process of formation and development in these areas, spatial structuring that define through two elements of population and activity with the communication structure interacting between them, has been ef...

Neuroimaging studies have identified three scene-selective regions in human cortex: parahippocampal place area (PPA), retrosplenial complex (RSC), and occipital place area (OPA). However, precisely what scene information each region represents is not clear, especially for the least studied, more posterior OPA. Here we hypothesized that OPA represents local elements of scenes within two independ...

Spatial integration has been shown to substantially decline with age. We examined the mechanism underlying this age-related impairment. Young and older adults were tested on the ability to integrate contour elements across variations in the collinearity of the target elements, their spatial proximity, and the relative spacing of the target elements to the background noise elements (Δ). The resu...

Linguistic research to date has determined many of the factors that structure the spatial schemas found across spoken languages. It is now feasible to determine the comprehensive system that these factors constitute. Among its features, this system has a relatively closed, universally available inventory of fundamental spatial elements that are combined to form whole schemas; it has a relativel...

Texture classification is one of the most studied and challenging problems in computer vision. A key requirement of successful texture classification algorithms is their ability to quantify the complex nature and diversity of real world textures. Recent developments in automatic texture classification have demonstrated the effectiveness of modeling texture elements as cluster centers of respons...

Physical and mechanical regularities in the effect of certain processing operations on the shape and roughness of the hydraulic cylinder surface are found. The mechanisms of the spatial self-organization of the relief and surface of bearings under conditions of false brinelling are summarized and analyzed. The data obtained can be used for further scientific generalization or prediction and dia...