ISSN:0167-7055    

DOI:10.1111/j.1467-8659.1984.tb00083.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

ISSN:0167-7055    

DOI:10.1111/j.1467-8659.1984.tb00084.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

AbstractThis paper describes a CAD facility for the design of automatic guidance and control strategies for an unmanned autonomous submersible. The facility utilises a three dimensional colour graphics display of the scene and vehicle trajectory, providing a man/ machine interface for the operator in addition to vehicle motion simulation with six degrees of freedom. A primary application envisaged for the CAD facility is in the design of scene analysis algorithms and the intelligent control system structure, for an autonomous submersible employing scanning sonar as its target sensor.

ISSN:0167-7055    

DOI:10.1111/j.1467-8659.1984.tb00085.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

AbstractA new method of parameterization, based on areas, is suggested and some results obtained for planar cubic curves are presented and compared with standard methods. The new technique provides a “tight” interpolant, is axis independent and offers shape control via a set of off geometry data points (henceforth called poles) relative to which areas are computed. A simple algorithm for the computation of initial pole positions is given (this is based on obtaining agreement with a standard parameterized curve on the same data and with identical geometrical end conditions). Some additional properties of the parameterization are discussed including its limiting behaviour and its applicability to function draw

ISSN:0167-7055    

DOI:10.1111/j.1467-8659.1984.tb00086.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

AbstractA functional approach is used to investigate the creation and manipulation of pictures as hierarchical entities. A set of useful functions is designed and used in a series of illustrative examples written in the functional programming language HOPE. A functional animation system incorporating these ideas is then discussed.

ISSN:0167-7055    

DOI:10.1111/j.1467-8659.1984.tb00087.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

AbstractThe Systolic Pixel or Spixel is a novel architecture for an intelligent pixel‐based graphics database for geometric‐solid models. An algorithm is described which performs visible surface calculations for any complexity of coloured 3‐dimensional (3‐D) surface and which structures geometric‐solid model data in a natural way. The algorithm/architecture of the spixel features a simple set of priority rules acting upon data in nearest neighbour locations and a simple set of movement rules of data to nearest neighbour locations. The spixel is constructed out of identical functional units. These features are attractive for an implementation of the algorithm in Very Large Scale Integrati

ISSN:0167-7055    

DOI:10.1111/j.1467-8659.1984.tb00088.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

AbstractThis paper gives a technical overview of the Winchester Graphics System. It concentrates on the software system, and in particular, the use of a relational database (PRTV). The main use of the system is in scientific research and it has been used a great deal in Chemistry, Biophysics and related sciences. However, the facilities are general and the same system is used for quite different applications. such as engineering and archaeology. This database has been found to provide researchers with a powerful flexible tool and has helped the UKSC to provide an environment where new ideas can be proposed and evaluated quickly and easily.

ISSN:0167-7055    

DOI:10.1111/j.1467-8659.1984.tb00089.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

ISSN:0167-7055    

DOI:10.1111/j.1467-8659.1984.tb00090.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

ISSN:0167-7055    

DOI:10.1111/j.1467-8659.1984.tb00091.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

AbstractThis paper presents a method of colouring pictures by using three kinds of gradation techniques: gradation from a figure to a point, gradation from a figure to a line segment and gradation from a figure to another figure. Intermediate figures are computed by homothesis or interpolation. The gradation is obtained by colouring these intermediate figures. The colours are simulated by using programmed pattern. This approach has allowed us to produce realistic images with a hardware device that is not very good for these types of applications. because of its restricted intensity and colour capabilities. Colour distribution algorithms and gradation techniques are explained in detail. A few examples with shading and texture are shown.

ISSN:0167-7055    

DOI:10.1111/j.1467-8659.1984.tb00092.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY