Title :
Improving image clarity using local feature dimension
Author_Institution :
Digital Productivity, CSIRO, Brisbane, QLD, Australia
Abstract :
This study presents an alternative method of displaying vector and raster graphics which provides greater visual clarity than standard methods. Rather than rasterising lines and points by shading them with a pixel thickness, shade is interpreted as an intensity per length and per point, respectively; generically per fractal measure of the geometric feature. Integrating these shades through supersampling provides a generic shading method that is independent of screen resolution, supersample size and feature dimension. By using a fractal measure that is local in both space and scale, the author´s method generalises to arbitrary features and so is extendable to raster images where no feature is truly sub-two-dimensional. The resulting images exhibit details that are lost to standard rasterisers. Their system can be seen as enabling a sliding scale between a photographic view and a diagrammatic view of the same data.
Keywords :
feature extraction; fractals; image resolution; vectors; arbitrary features; diagrammatic view; fractal measure; generic shading; geometric feature; image clarity; local feature dimension; photographic view; raster graphics; screen resolution; sliding scale; supersample size; vector graphics; visual clarity;
Journal_Title :
Image Processing, IET
DOI :
10.1049/iet-ipr.2014.0642