基于摄影棚模式的计算机三维产品渲染研究

通过对产品摄影的评价因素和对摄影棚拍摄特点的分析,分别以白色和黑色为渲染背景,建立了基于摄影棚模式的三维产品渲染流程。在虚拟摄影棚左侧、右侧和顶部建立三盏不同的矩形灯光,并结合材质设置和渲染参数设置,就能够渲染出白色背景的精美产品效果图;黑色背景的渲染是以一盏背景灯将产品从黑色背景中烘托出来,并利用模糊倒影来增强产品的立体感;还分析了产品渲染中实景匹配的两种方式,并提出透明材质物体渲染的注意事项。以渲染器Vray为实验平台,渲染结果真实度高。     

双通道PWM实现LED动态光源混色控制模型

充分利用发光二极管（LED）光源的可控性,采用冷暖白光LED和两通道脉冲宽度调制PWM法,从人们关心的照明光源参数出发,依据选用冷白LED光源和暖白LED光源光度色度参数,建立了给定光度量输出时冷暖白光LED光源控制占空比计算的模型,并探讨了基于色温目标控制参数占空比的约束条件．实际设计混色光源参数分析过程和人们选择光源性能指标参数的一致性,为实现分档或连续调光调色提供了直观实用的混色控制模型．     

Tiffany,friend of people of color: White investments in antiracism

Whites have long designated people of color as "pgood" when they were "friends of the white man." In a reverse move, some antiracist whites now identify themselves as "good" whites - as friends of people of color. A number of antiracist psychologists and teacher educators have argued in support of this move. To develop a coherent and abidingly antiracist stance, they say, white students and teachers must feel positive about their racial identity. If the "anti" aspect of antiracist white identity development is given too large a role, learners will have no room to measure themselves in proactive as opposed to reactive terms. Accordingly, white students need to be able to think of themselves as "pallies" of people of color. Although less likely than students to aspire to the status of friend of people of color, progressive white professors, too, insofar as they pride themselves on "getting" race issues, congratulate themselves on being exceptional whites. Both forms of white exceptionalism rely on an indispensable "anti" status: antiracist whites are invited to see themselves as not that kind of white and to embrace only those aspects of whiteness that can be construed as positive. This paper argues that progressive whites must interrogate the very ways of being good that white identity theory offers to protect, for the moral framing that gives whites credit for being antiracist is parasitic on the racism that it is meant to challenge. In order to move towards new conceptions of white antiracism, the paper argues, we need to adopt emergent approaches to both cross-race and intrarace relations.     

Voices of teacher candidates of color on white race evasion: ‘I worried about my safety!’

Abstract

This qualitative study investigated the negative impacts minority teacher candidates receive from white teacher candidates in a required multicultural education class. The findings reveal that four teacher candidates of color had difficulty positioning themselves among the overwhelming silencing power of whiteness in the class. The white students were tactful at evading power and race and flattening the existing hierarchical power relations through the discourses of colorblindness and by preying on the minority instructor. Their understanding of diversity was also shallow. On the other hand, the teacher candidates of color were afraid that they might be labeled as the ones who spoke up against the white students and fearful of the possibility of retaliation and ostracism from the white peers. It seems that the teacher education program’s structure allowed the white candidates to impose strong negative peer pressure on the teacher candidates of color.     

电视摄像机中白平衡的调整和应用

白平衡的调整是电视拍摄过程中最常用、最重要的步骤，正确掌握白平衡的调整和应用技术．是拍摄理想画面的关键。本文着重介绍了色温、白平衡的概念及其相关意义。以及如何在不同光源色温环境下。利用白平衡的调整和应用技术再现或表现场景、烘托气氛、传达思想、表达感情的方法。     

Smiling Faces and Colored Spaces: The Experiences of Faculty of Color Pursing tenure in the Academy

Through a comprehensive literature review, this article identifies and discusses barriers to recruitment and retention of faculty of color. Marginalization, racism and sexism manifested as unintended barriers are presented as a few of the barriers faculty of color face in successfully navigating the tenure process. Informed by this literature review, we conducted a self-study that presents the experiences of four faculty of color navigating the tenure process in a predominately white Research Institution. The purpose of this study was to share the experiences of three junior faculty of color as they navigate the tenure process, and one tenured faculty of color who is informally mentoring them through the process. This article highlights the findings of one component of a broader study: focus group discussions about how diversity efforts and activities are subsequently evidenced in teaching, research agendas and service. Four themes are presented: Academic Identity; Confronting Diversity, Mentoring, and Safe Spaces. A discussion of the consequences of these findings on faculty of color retention and recruitment is included. Recommendations are made to other predominately white institutions on how to address issues facing faculty of color.     

基于OSG的LAS文件三维渲染研究

该文在研究点云数据四叉树存储结构和内外存调度策略的基础上,利用OSG技术,构建良好的交互环境,实现LiDAR点云数据的三维实时渲染绘制,并通过实验验证了该渲染方法。实验表明,该方法无论是在渲染效率,还是渲染效果上,均取得了令人满意的结果,为LAS文件的实时三维渲染提供一种新的解决思路。     

新闻媒体中颜色词屡获新义现象探析

"白"、"灰"、"绿"、"橙"等颜色词在新闻媒体中屡获新义,颜色词语义由潜性形式转变为显性形式。颜色词新义的开发利用,有助于准确描述客观世界,增强语言表达效果,并补充到现行词汇系统中来。     

Addressing White Supremacy on Campus: Anti-Racist Pedagogy and Theological Education

Abstract

Students in colleges and universities across the United States are being exposed to overtly white supremacist groups on campus. These groups dub themselves “identitarians” and attempt to influence students to support a white nationalist ideology through claims of reverse racism that threaten the lives of people of color. Theologically, this ideology also presents an obstacle for instruction: the existence of a competing Imago Dei that ties itself to white supremacy, dehumanizing persons of color. This article encourages the use of anti-racist pedagogies in theological education as a corrective to this competing Imago Dei.     

Speaking of whiteness: compromise as a purposeful pedagogical strategy toward white students' learning about race

This article discusses pedagogical issues that arise in higher education when instructors of color teach classes with predominantly white students. We use student interview data collected during one graduate social foundations of education course to argue that in order to be effective, pedagogical decisions in a foundations course centered on race necessitate certain compromises in terms of power. To open up spaces of dialogic possibility for the discussion and understanding of white privilege, the authors suggest that instructors engage in a pedagogy of purposeful compromise. Such a pedagogy accepts that most white students will not, in the space of one course, recognize their own agency in the perpetuation of privilege and racism, but they might recognize white privilege as a larger structural process that inhibits the opportunities of people of color.     

服饰设计中黑白搭配艺术

本阐述了服饰设计中黑白搭配的色彩原理、对比特点以及它们所表现出来的审美价值与艺术魅力。     

Influence of Color on Audiences Rated Perception of Reality in Film

Conclusions The hypothesis that color is superior to black and white in eliciting an audience’s rated perception of reality in film scenes is not clearly supported by the evidence. A slight trend, on the contrary, is evinced favoring black and white. Results of the fourth item not only reversed the mild trend in favor of blackand-white, but also showed a significant drop in number of “real” responses, for both black and white and color, as compared with the three other items. The difference in favor of color in this case, as pointed out, was significant at the 5 percent level of confidence. While it is difficult to establish the cause of the differing effects of this fourth scene, it is reasonable to conjecture that a theatrical quality in the behavior of the main actor in this scene may have contributed to the generally reduced credence placed in this scene when shown either as black-and-white or color. The superiority of the color version over the black-and-white suggests that this “theatrical” quality has differential effects in interaction with the color variable. The findings here are much too sketchy to justify any elaborate speculation, but there might possibly be here some mild support of VanderMeer’s contention that when color is used in film, audiences are less apt to take notice of, or be affected by other cues. The fact of whether a scene is real or staged seems less influential to an audience’s perception of reality than other variables within the screen image itself, of which one is the color variable. Apart from the color variable, the ability of a film scene to give the illusion of having been shot from life seems to be very potent even when, in fact, the scene is staged. There is some indication that variables important to an audience’s perception of reality in film scenes have differtial effects in interaction with color and black and white.     

郭沫若新诗中的白色——以《女神》为例

郭沫若最喜欢的色彩是白色,在《女神》中,白色的形象出现多达109次,这与郭沫若生活的环境、喜爱的诗人如李白、王维以及道家、基督教的影响有密切关联。白色使郭沫若的诗歌呈现出构图美,处处闪现着空白的意蕴,诗歌意境灵动轻盈。诗中的白色,在光的照耀下具有一种透明温热的感觉,而不像初期象征派诗中因为雾烟的遮挡,白色显得污浊和灰暗。郭沫若诗中的白色具有其独特的美感。     

Color television and educational TV

Conclusions Color television is so new that there is little concrete information on the subject. However, it seems logical to doubt that color will provide any general increased effectiveness to educational TV. In some areas, such as art and medicine, the impact may be great; but for the greater proportion of educational subjects, it will not contribute a great deal. In view of this, together with the present high cost of color TV, it would seem foolish for educational TV to delay development because color television is coming. The transition to color can always be made after the piomeering is done, when costs have gone down, when color receiver circulation is large enough to make color worth while, and when the numerous problems of color programming and production have been solved. What effect will color TV have upon educational TV programs? How expensive will color TV be for educational use? How will educational TV stations use color TV? What competition will commercial color TV offer to educational black and white TV stations? These questions are answered and an overview of the implications of color for educational TV is presented. E. G. Sherburne, Jr., was formerly Television Coordinator at the U. S. Navy Special Devices Center, Port Washington, Long Island, New York.     

黑白色在服装设计中的运用

黑白色作为基本的服装色彩,以其独特魅力占据世界服装流行舞台。通过分析黑白色在当前服装设计中的运用,探讨了如何将黑白色的流行因素、审美意识、色彩情感和黑白面料图案运用在服装设计中,以促进服装设计和服装产业的蓬勃发展,更好地满足人们日益增长的服装审美情趣和追求时尚服装的欲望感。     

从客家民居建筑的造型谈其色彩对比美

色彩对比中最强的明度对比是黑与白的对比。综观客家传统民居建筑造型的色彩,可以看出它是以中国古代太极图案的黑、白对比为基本色调的。简练的设色,包含着建筑本身一个又一个的对比,体现着朴素、淡雅的黑白对比美,加之重视环境色彩,巧妙地引入自然,与环境色彩构成冷暖对比的艺术效果。客家传统民居建筑造型中这独特的色彩构成美在对比,美在协调。     

电视片摄像中的色彩控制

色彩控制是电视摄像师在艺术创作中不可或缺的一个重要环节，黑、白、灰影调则是正确把握彩色电视画面的重要基础。本主要从全片的色彩总谱上、服装的色彩选择上、光线的运用上论述了如何在彩色摄像中，运用黑白灰影调理论来控制色彩，使彩色电视画面达到艺术的更高境界。     

东亚地区白色色彩意识比较探析

大自然就像一幅五颜六色的画卷,而描绘色彩的词语作为人类感知世界的重要工具,不仅能展示自然环境的绚烂多彩,还拥有丰富的民族文化内涵。以基本色之一的白色为中心,对比共属“汉字文化圈”的东亚地区文化流域中东亚各民族白色色彩意识的异同,可揭示隐藏在色彩意识背后的丰富的民族文化底蕴。     

White innocence as an investigative frame in a schooling context

ABSTRACT

Ineffective and oppressive schooling of people of color has been obstinate and widespread. Disinviting and hostile practices often engaged through written and oral discourses contribute to this condition. Thus, identifying such discourses becomes imperative to reversing these conditions and creating equitable schooling. This essay proposes the use of critical analysis of white innocence as a concept to investigate prejudicial schooling practices. Borrowing from legal studies, the author proposes analyzing the rhetoric of white innocence and its simultaneous opposite, person of color as perpetrator, as an investigative frame in the schooling context. In this work, white innocence is reviewed as a social representation that assists in making more transparent the unmarked standard of white supremacy. The essay first conceptualizes the rhetoric of white innocence. Then, a methodological framework of social cognition through discourse and its (re)production of social representations is offered and utilized to exemplify the manifestations of white innocence in a social studies context.     

中日基本颜色词的异同分析——以“红”、“白”为中心

颜色词即表示色彩的词。中日两国有丰富的颜色词,红(赤)、黄、绿(青)、白、黑为中日两国的基本色。这些基本颜色词除实指具体的色彩以外又具有一定的抽象感念。本文尝试从"红"、"白"入手,分析其语义特征探究其所反映两国文化内涵的异同。