浅谈居室环境的色彩设计

在居室环境中,色彩不仅能唤起人们的第一视觉印象,还能够增强人的某些情感,合理的色彩搭配也是一种品味的体现.本文结合色彩的设计方法,主要从居室的重点空间介绍色彩的实际运用.     

A method of video image enhancement

A new method of image enhancement that allows improving the quality of required image details is proposed. To enhance local contrasts, a special transformation function is submitted. By the example of enhancement of a video-shot image of a car, we show the efficiency of the proposed technique in comparison with known methods of contrast enhancement.     

Feature integration across space, time, and orientation.

The perception of a visual target can be strongly influenced by flanking stimuli. In static displays, performance on the target improves when the distance to the flanking elements increases—presumably because feature pooling and integration vanishes with distance. Here, we studied feature integration with dynamic stimuli. We show that features of single elements presented within a continuous motion stream are integrated largely independent of spatial distance (and orientation). Hence, space-based models of feature integration cannot be extended to dynamic stimuli. We suggest that feature integration is guided by perceptual grouping operations that maintain the identity of perceptual objects over space and time. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

顺发井田综合勘查施工中煤岩层对比

采用地震与钻探综合地质剖面定构造形态、测井曲线组合特征定层位;钻探岩性及标志层特征定深度,用这种综合岩煤层对比方法指导勘查施工行之有效。     

Contrast enhancement dynamic histogram equalization for medical image processing application

Image processing requires an excellent image contrast‐enhancement technique to extract useful information invisible to the human or machine vision. Because of the histogram flattening, the widely used conventional histogram equalization image‐enhancing technique suffers from severe brightness changes, rendering it undesirable. Hence, we introduce a contrast‐enhancement dynamic histogram‐equalization algorithm method that generates better output image by preserving the input mean brightness without introducing the unfavorable side effects of checkerboard effect, artefacts, and washed‐out appearance. The first procedure of this technique is; normalizing input histogram and followed by smoothing process. Then, the break point detection process is done to divide the histogram into subhistograms before we can remap the gray level allocation. Lastly, the transformation function of each subhistogram is constructed independently. © 2011 Wiley Periodicals, Inc. Int J Imaging Syst Technol, 21, 280‐289, 2011;     

A category adjustment approach to memory for spatial location in natural scenes.

Memories for spatial locations often show systematic errors toward the central value of the surrounding region. This bias has been explained using a Bayesian model in which fine-grained and categorical information are combined (Huttenlocher, Hedges, & Duncan, 1991). However, experiments testing this model have largely used locations contained in simple geometric shapes. Use of this paradigm raises 2 issues. First, do results generalize to the complex natural world? Second, what types of information might be used to segment complex spaces into constituent categories? Experiment 1 addressed the 1st question by showing a bias toward prototypical values in memory for spatial locations in complex natural scenes. Experiment 2 addressed the 2nd question by manipulating the availability of basic visual cues (using color negatives) or of semantic information about the scene (using inverted images). Error patterns suggest that both perceptual and conceptual information are involved in segmentation. The possible neurological foundations of location memory of this kind are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

煤气脱硫工艺简述

介绍了国内外煤气脱硫的各种生产工艺,并对不同的生产工艺进行了对比。     

Image quality and the aesthetic judgment of photographs: Contrast, sharpness, and grain teased apart and put together.

We examined the individual and combined effects of contrast, sharpness, and grain degradations on the aesthetic judgments of photographs depicting natural and human-made scenes. Our systematic approach demonstrated that certain degradations, and their combinations, had more impact on aesthetic judgments than others, and that the effects varied depending on the type of scene. We also showed that the degradations were additive in that the more degradations to which an image was subjected, the less it was liked. Finally, we found evidence for a contrast effect in which the aesthetic judgments of high-quality images were more positive as the images they were presented with were more degraded. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Atomically Thin Mica Flakes and Their Application as Ultrathin Insulating Substrates for Graphene

By mechanical exfoliation, it is possible to deposit atomically thin mica flakes down to single‐monolayer thickness on SiO₂/Si wafers. The optical contrast of these mica flakes on top of a SiO₂/Si substrate depends on their thickness, the illumination wavelength, and the SiO₂ substrate thickness, and can be quantitatively accounted for by a Fresnel‐law‐based model. The preparation of atomically thin insulating crystalline sheets will enable the fabrication of ultrathin, defect‐free insulating substrates, dielectric barriers, or planar electron‐tunneling junctions. Additionally, it is shown that few‐layer graphene flakes can be deposited on top of a previously transferred mica flake. Our transfer method relies on viscoelastic stamps, as used for soft lithography. A Raman spectroscopy study shows that such an all‐dry deposition technique yields cleaner and higher‐quality flakes than conventional wet‐transfer procedures based on lithographic resists.