Search for dissertations about: "Color Spectra"

Showing result 1 - 5 of 21 swedish dissertations containing the words Color Spectra.

2. 1. Group-Theoretical Structure in Multispectral Color and Image Databases

   Author : Thanh Hai Bui; Reiner Lenz; Björn Kruse; Jinhui Chao; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; group theory; PCA Principal Component Analysis ; CBIR; Content-based Image Retrieval ; filter; color; image; multispectral; database; Signal processing; Signalbehandling;

   Abstract : Many applications lead to signals with nonnegative function values. Understanding the structure of the spaces of nonnegative signals is therefore of interest in many different areas. Hence, constructing effective representation spaces with suitable metrics and natural transformations is an important research topic. READ MORE

4. 2. Color Tuning for Perovskite Light-Emitting Diodes

   Author : Hongling Yu; Feng Gao; Xiaoke Liu; Olle Inganäs; Fengling Zhang; Maksym V. Kovalenko; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Perovskite light-emitting diodes; Color tuning; Pure and mixed halide; Spectral stability; White emission;

   Abstract : Metal halide perovskites (MHPs) are recognized as promising semiconductor materials for a variety of optical and electrical device applications due to their cost-effective and outstanding optoelectronic properties. As one of the most significant applications, perovskite light-emitting diodes (PeLEDs) hold promise for future lighting and display technologies, attributed to their high photoluminescence quantum yield (PLQY), high color purity, and tunable emission color. READ MORE

5. 3. Electronic paper in color by electrochromic materials and plasmonics

   Author : Oliver Olsson; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electrochromism; reflective displays; plasmonic electronic paper; conjugated polymers; structural color; plasmonic;

   Abstract : The most common display today is emissive. It produces its own light and emits it to the viewer's eye. A reflective display, also known as electronic paper, uses ambient light and reflects it to the viewer, just like a newspaper. READ MORE

6. 4. WO3 for reflective displays in color

   Author : Marika Gugole; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; reflective displays; electrochromism; plasmonic metasurfaces; structural colors;

   Abstract : Reflective displays, also known as electronic paper, are very attractive due to their low power consumption and great visibility under bright ambient light conditions. However, reflective displays in color are still limited on the market for two main reasons. READ MORE

7. 5. Color Prediction and Separation Models in Printing : Minimizing the Colorimetric and Spectral Differences employing Multiple Characterization Curves

   Author : Yuanyuan Qu; Sasan Gooran; Roger D. Hersch; Linköpings universitet; []
   Keywords : ;

   Abstract : Color prediction models and color separation models are essential for print device characterization and calibration, from which the profiles used in color management systems are built up. Dot gain refers to the phenomenon in printing causing the printed ink dots appear bigger than their reference size in the original bitmap. READ MORE