Optimization of Sampling Structure Conversion Methods for Color Mosaic Displays

Title: Optimization of Sampling Structure Conversion Methods for Color Mosaic Displays
Authors: Zheng, Xiang
Date: 2014
Abstract: Although many devices can be used to capture images of high resolution, there is still a need to show these images on displays with low resolution. Existing methods of subpixel-based down-sampling are reviewed in this thesis and their limitations are described. A new approach to optimizing sampling structure conversion for color mosaic displays is developed. Full color images are filtered by a set of optimal filters before down-sampling, resulting in better image quality according to the SCIELAB measure, a spatial extension of the CIELAB metric measuring perceptual color difference. The typical RGB stripe display pattern is tested to get the optimal filters using least-squares filter design. The new approach is also implemented on a widely used two-dimensional display pattern, the Pentile RGBG. Clear images are produced and color fringing artifacts are reduced. Quality of down-sampled images are compared using SCIELAB and by visual inspection.
URL: http://hdl.handle.net/10393/31189
CollectionThèses, 2011 - // Theses, 2011 -
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