Computer-Generated Perspective Plots for Highway Design Evaluation.

摘要

The report describes the techniques and mathematical basis for producing computer-generated perspective plots of highways for design evaluation. The plots are either produced on a digital incremental plotter or displayed on a cathode ray tube (CRT) or microfilm recorder. Animation effects may be produced by photographing sequences of views as produced on the CRT displays or as recorded on microfilm. A unique hidden line algorithm is described which was specifically developed for data derived from highway design processes. The methodology for producing photo-plot montages,which consists of superimposing computer-generated plots on ground photographs,is given. Results of field test evaluations are presented for photo montages produced using a phototheodolite and also non-metrical cameras. (Author)