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You searched for subject:(Inmos). Showing records 1 – 2 of 2 total matches.

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University of Canberra

1. Cooper, C. Space subdivision and distributed databases in a multiprocessor raytracer.

Degree: 1991, University of Canberra

This thesis deals with computer generated images. The thesis begins with an overview of a generalised computer graphics system, including a brief survey of typical methods for generating photorealistic images. One such technique, ray tracing, is used as the basis for the work which follows. The overview section concludes with a statement of the aim which is to: Investigate the effective use of available processing power and effective utilisation of available memory by implementing a ray tracing programme which uses space subdivision, multiple processors and a distributed world model database. The problem formulation section describes the ray tracing principle and then introduces the main areas of study. The INMOS Transputer (a building block for concurrent systems) is used to implement the multiple process ray tracer. Space subdivision is achieved by repeated and regular subdivision of a world cube (which contains the scene to be ray traced) into named cubes, called octrees. The subdivision algorithm continues to subdivide space until no octree contains more than a specified number of objects, or until the practical limit of space subdivision is reached. The objects in the world model database are distributed in a round robin manner to the ray trace processes. During execution of the ray trace programme, information about each object is passed between processes by a message mechanism. The concurrent code for the transputer processes, written in OCCAM 2, was developed using timing diagrams and signal flow diagrams derived by analogy from digital electronics. Structure diagrams, modified to be consistent with OCCAM 2 processes, were derived from the timing diagrams and signal flow diagrams. These were used as a basis for the coding. The results show that space subdivision is an effective use of processor power because the number of trial intersections of rays with objects is dramatically reduced. In addition, distribution of the world model database avoids duplication of the database in the memory of each process and hence better utilisation of available memory is achieved. The programmes are supported by a menu driven interface (running on a PC AT) which enables the user to control the ray trace processes running on the transputer board housed in the PC.

Subjects/Keywords: computer generated images; computer graphics; raytracer; ray tracing; INMOS Transputer

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Cooper, C. (1991). Space subdivision and distributed databases in a multiprocessor raytracer. (Thesis). University of Canberra. Retrieved from http://erl.canberra.edu.au./public/adt-AUC20060629.145540

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Cooper, C. “Space subdivision and distributed databases in a multiprocessor raytracer.” 1991. Thesis, University of Canberra. Accessed December 12, 2018. http://erl.canberra.edu.au./public/adt-AUC20060629.145540.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Cooper, C. “Space subdivision and distributed databases in a multiprocessor raytracer.” 1991. Web. 12 Dec 2018.

Vancouver:

Cooper C. Space subdivision and distributed databases in a multiprocessor raytracer. [Internet] [Thesis]. University of Canberra; 1991. [cited 2018 Dec 12]. Available from: http://erl.canberra.edu.au./public/adt-AUC20060629.145540.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cooper C. Space subdivision and distributed databases in a multiprocessor raytracer. [Thesis]. University of Canberra; 1991. Available from: http://erl.canberra.edu.au./public/adt-AUC20060629.145540

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


Central Queensland University

2. Altoveros, NC. Examples of the use of transputers in image processing and analog data acquisition.

Degree: 1990, Central Queensland University

Some hardware and software aspects of the transputer have been investigated. This involved two major areas of study. One was the development of inexpensive analog interfaces and the other was the development of an image processing system to identify carbon anode blocks used in the aluminum smelting process. The first part of this study looked at interfacing analog signals to the transputer via the transputer links. In particular, analog to digital and digital to analog converter boards, which were compatible to the industrial standard TRAM configuration, were designed and tested. The 8 bit single channel AID converter board developed was capable of handling a data rate of almost 200 thousand samples per second with a link speed of 20 Mbits/s. The multi-channel AID converter board was capable of sampling at 19.69 thousand samples per second per channel on eight channels, and the D/ A converter board was capable of handling a data throughput of 198.01 thousand conversions per second. The study illustrates that these maximum conversion rates are determined by the OCCAM software and not by the link speed. The second part of the study involved the development of a prototype image processing system to remotely identify carbon anodes. The software development for this was implemented in Turbo Pascal and OCCAM allowing a comparison to be made of the speed of these two implementations. The study details how the image processing techniques of connectivity analysis was applied to the pattern identification process. The use of sequential, concurrent and parallel processes in the implementation is discussed. The study showed that by using a fairly simple two dimensional pattern and a transputer for the processing, it would be possible to identify carbon anodes at several locations in a production plant within the time constraints of the production process.

Subjects/Keywords: Inmos; Transputers; Analog; Digital; Image processing; 010101 Algebra and Number Theory

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Altoveros, N. (1990). Examples of the use of transputers in image processing and analog data acquisition. (Thesis). Central Queensland University. Retrieved from http://hdl.cqu.edu.au/10018/25351

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Altoveros, NC. “Examples of the use of transputers in image processing and analog data acquisition.” 1990. Thesis, Central Queensland University. Accessed December 12, 2018. http://hdl.cqu.edu.au/10018/25351.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Altoveros, NC. “Examples of the use of transputers in image processing and analog data acquisition.” 1990. Web. 12 Dec 2018.

Vancouver:

Altoveros N. Examples of the use of transputers in image processing and analog data acquisition. [Internet] [Thesis]. Central Queensland University; 1990. [cited 2018 Dec 12]. Available from: http://hdl.cqu.edu.au/10018/25351.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Altoveros N. Examples of the use of transputers in image processing and analog data acquisition. [Thesis]. Central Queensland University; 1990. Available from: http://hdl.cqu.edu.au/10018/25351

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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