A spectroscopic method for quick evaluation of tint strength and tint tone of titania (rutile) pigment and factors affecting them

Titanium dioxide (TiO₂) manufacturing industries measure optical properties such as brightness, colour, tint strength, tint tone, gloss, scatter coefficient, and others to ensure the quality of the product. Product characterization and process control generally focus on the optical properties, which determine its quality. In this work, titania rutile pigment with varying tint strength and tint tone is analyzed and a correlation is established between particle size and the optical properties such as tint strength and tint tone. It is observed that optical properties of titania pigment depends on the particle size as well as particle size distribution. A relatively faster evaluation of tint strength and tint tone can be made using the reflectance and particle size measurements. Analytical samples were prepared by ultrasonic dispersion of pigment in water containing calgon as dispersing agent. To verify the accuracy of the method, pigment tint strength and tint tone obtained from this study are compared with those resulting from traditional analysis. The results showed that the new method is viable.     

徽州传统民俗文化的经典图式——探寻古民居雕刻装饰的"味"与"道"

徽州古民居装饰雕刻作为明清两朝徽派建筑的重要组成部分和民居装饰艺术的重要标志,在我国传统文化史上留下光辉灿烂的一页。收集整理了详实而生动的传统民俗文化资料和徽雕作品的文脉展示,探寻徽派雕刻与传统民俗文化的历史源流,了解精美之中的民俗典故和人们企盼吉祥生活、家业兴旺的美好愿望,从而揭示徽州民俗文化的丰富内涵及潜藏于其中的伦理道德和儒学思想。     

Mixing tone mapping operators on the GPU by differential zone mapping based on psychophysical experiments

In this paper, we present a new technique for displaying High Dynamic Range (HDR) images on Low Dynamic Range (LDR) displays in an efficient way on the GPU. The described process has three stages. First, the input image is segmented into luminance zones. Second, the tone mapping operator (TMO) that performs better in each zone is automatically selected. Finally, the resulting tone mapping (TM) outputs for each zone are merged, generating the final LDR output image. To establish the TMO that performs better in each luminance zone we conducted a preliminary psychophysical experiment using a set of HDR images and six different TMOs. We validated our composite technique on several (new) HDR images and conducted a further psychophysical experiment, using an HDR display as the reference that establishes the advantages of our hybrid three-stage approach over a traditional individual TMO. Finally, we present a GPU version, which is perceptually equal to the standard version but with much improved computational performance.     

Content‐Aware Automatic Photo Enhancement

Automatic photo enhancement is one of the long‐standing goals in image processing and computational photography. While a variety of methods have been proposed for manipulating tone and colour, most automatic methods used in practice, operate on the entire image without attempting to take the content of the image into account. In this paper, we present a new framework for automatic photo enhancement that attempts to take local and global image semantics into account. Specifically, our content‐aware scheme attempts to detect and enhance the appearance of human faces, blue skies with or without clouds and underexposed salient regions. A user study was conducted that demonstrates the effectiveness of the proposed approach compared to existing auto‐enhancement tools.     

基于颜色空间转换的高动态图像双屏显示方法

针对高动态范围图像映射后偏色问题及图像细节显示不足问题,提出了一种基于颜色空间转换与双屏结合的显示方法。首先将高动态图像转换到HSL空间,采用自适应对数算法进行亮度映射及相应的饱和度增强,再次转换到RGB空间并进行LCD-FED双屏分割显示。实验结果表明该方法不仅解决了偏色问题,而且在细节表现能力上也有了很大的提升,其失真度仅为3.7%。     

不同负荷诱发股四头肌的肌音特征研究

从肌肉的发声原理出发,运用声学的研究方法,以股四头肌为对象,研究人在不同负荷时,股四头肌的肌音特征;利用Matlab 7.0软件编写小波处理程序及功率谱分析程序;对提取的肌音信号进行处理、分析、研究;揭示其发声规律和特点。为肌肉的力量训练、研究提供一种新的测试方法和依据;为无损检测肌肉疼痛、扭伤等疾病探索更好的分析手段。     

天祝天堂乡科拉一带社火调查

古老的土地与火的崇拜,产生了祭祀社与火的风俗。随着社会的发展,人们认识能力的提高,这项源于祭祀的活动,成为在中华民族新年闹春的传统节日中规模盛大、内容繁富的民间娱乐活动。着眼于甘肃省天祝县天堂乡科拉一带的社火,对其整体形态及表演中演唱的社火调加以梳理和描述。     

王季烈“主腔说”理论之探讨

著名昆曲理论家王季烈在《螾庐曲谈》中首次提出"主腔说"。"主腔说"的提出具有一定的时代意义和理论意义。后人在王季烈"主腔说"理论基础上,对其作了更详尽和科学的阐释,并放之于实际创作中,切实地解决了昆曲曲牌的联套问题。     

基于二次多项式后验概率估计的汉语数码语音识别

本文提出了一种可在８位单片机上实现的非特定人汉语数码识别算法。该算法基于最大后验概率分类原理，利用二次多项式估计后验概率分布。其优点是识别算法的简单，不涉及动态规划过程。     

纸张性能对不同阶调处印刷品密度的影响

实验结合印刷品质量检测方法和SPSS软件,对在IGT印刷适性仪上的印刷结果进行分析,得到纸张性能与不同阶调处印刷品密度之间的关系.据此数据能够预知密度再现质量情况,可通过比较不同纸张的性能数据判断哪种纸张适合于目标印刷品.