色彩密码

设计界的惊喜大师—瑞典的萨姆＆韦德嘉德·汉森（Tham＆Videgard Hansson）建筑公司以搞怪的签名艺术对一家有一个多世纪历史的室内建筑进行翻新。萨姆和韦德嘉德·汉森,这两个合作伙伴接手的项目包括一个镜像树屋酒店,用森林作为酒店的保护色显然不是最异想天开的设计理念。     

Colour Raster Operations

We propose a form of three-input BitBlt/RasterOp which is useful for pictures constructed in a colour-mapped form as well as in true colour. The model used for this is that of a piece of potentially multicoloured paper on which the picture appears as ink marks. Computationally simple range testing operations can be applied to the source and destination regions to produce many useful effects, some of which we demonstrate. The resulting operations are primitives which can be used to construct more complex operations.     

Projective Alpha Colour

Alpha colours were introduced for image compositing, using a pixel coverage model. Algebraically they resemble homogeneous coordinates, widely used in projective geometry calculations. We show why this is the case. This allows us to extend alpha beyond compositing, to all colour calculations regardless of whether pixels are involved and without the need for a coverage model. Our approach includes multi‐channel spectral calculations and removes the need for 7 channel and 6 channel alpha colour operations. It provides a unified explanation of pre‐multiplied and non pre‐multiplied colours, including negative coordinates and infinite points in colour space. It permits filter and illumination operations. It unifies the three existing significant compositing models in a single framework. It achieves this with a physically‐plausible energy basis. Keywords: projective geometry, homogeneous coordinates, image compositing, alpha blending, alpha compositing, colour representation, filtering, spectral colour, projective alpha colour     

彩色荧光屏混色自动检测研究

彩色荧光屏混色自动检测研究张建森，胡枝秀，彭嘉雄（华中理工大学图象识别与人工智能所武汉４３００７４）关键词：彩色显象管，荧光屏混色，自动检测．１引言彩色显象管生产的涂屏工艺要将红、绿、蓝三种颜色的荧光粉条带以及用作间隔的石墨条带均匀涂敷到荧光屏上．它...     

Colour quantization with Ant-tree

Ant-tree is a clustering algorithm inspired by biological ants. This paper defines a variant of such algorithm to perform colour quantization. Some of the features of the basic Ant-tree have been adapted to obtain a quicker algorithm and to perform the main steps of colour quantization on a big input set. The centroid of every cluster defines a colour of the palette and once the complete colour palette is established, the algorithm represents each pixel of the original image by the colour associated to its cluster.Computational results show that the error obtained for the quantized images is smaller than the error generated by some other well-known quantization methods.     

集成硅颜色传感器

介绍了一种新型的颜色传感器,其分光采用染色的聚酰亚胺滤色膜,它与传统的硅集成工艺兼容;敏感器件采用三个硅光二极管阵列。该传感器对入射光波长在380nm～650nm的范围内具有较高的灵敏度,且温漂小。     

Colour television graphics simulation

In the past, in order to simulate concurrent activities, a complex mapping scheme had to be designed to enable a uniprocessor to emulate many processors. Real time simulation of concurrency was not possible, and the expense of true multiprocessor configurations was extremely high. Today, with the advent of multimicroprocessor systems, real time simulation of concurrent activities is possible at relatively low cost.