Sökning: "Natural Color System"

Visar resultat 1 - 5 av 74 avhandlingar innehållade orden Natural Color System.

1. 1. Topics in Content Based Image Retrieval : Fonts and Color Emotions

   Författare :Martin Solli; Reiner Lenz; Jan Erik Solem; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; image analysis; content based image retrieval; font recognition; color emotions; Image analysis; Bildanalys;

   Sammanfattning : Two novel contributions to Content Based Image Retrieval are presented and discussed. The first is a search engine for font recognition. The intended usage is the search in very large font databases. The input to the search engine is an image of a text line, and the output is the name of the font used when printing the text. LÄS MER

3. 2. Efficient Image Retrieval with Statistical Color Descriptors

   Författare :Linh Viet Tran; Reiner Lenz; Björn Kruse; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; color properties; images; statistical; content-based image retrieval CBIR ; non-parametric density estimators; image database; Kernel; Gram-Schmidt; geometry-based; Information technology; Informationsteknologi;

   Sammanfattning : Color has been widely used in content-based image retrieval (CBIR) applications. In such applications the color properties of an image are usually characterized by the probability distribution of the colors in the image. LÄS MER

4. 3. Electroglottographic analysis of phonatory dynamics and states

   Författare :Andreas Selamtzis; Sten Ternström; Malte Kob; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; voice function; phonation; vocal fold vibration; vocal registers; electroglottography;

   Sammanfattning : The human voice is a product of an intricate biophysical system. The complexity of this system enables a rich variety of possible sounds, but at the same time poses great challenges for quantitative voice analysis. For example, the vocal folds can vibrate in several different ways, leading to variations in the acoustic output. LÄS MER

5. 4. Fixed-Parameter Algorithms for Optimal Convex Partitions and Other Results

   Författare :Magdalene Grantson Borgelt; Data Vetenskap; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; control; Datalogi; numerical analysis; Convex Partition; Computer science; Triangulation; kontroll; system; numerisk analys; systems; Fixed-Parameter Algorithm; Spanning Tree;

   Sammanfattning : In this thesis I study two-dimensional geometric optimization problems for which it is difficult to find efficient, exact, deterministic algorithms. All known solutions to these problems require time that is exponential in the total size of the input. LÄS MER

7. 5. Causes and consequences of niche differentiation between color morphs of pygmy grasshoppers

   Författare :Einat Karpestam; Anders Forsman; Birgitta Tullberg; Linnéuniversitetet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; color polymorphism; visual predators; Tetrix subulata; differential habitat use; niche; thermoregulation; feeding preferences; stable isotopes; Evolutionary Biology; Evolutionsbiologi;

   Sammanfattning : In this thesis, I used the color polymorphic pygmy grasshopper, Tetrix subulata, as a model system in order to investigate the degree of niche differentiation between alternative color morphs that are present within a single population. First, I hypothesized that individuals belonging to different color morphs differ in their innate food preference due to somewhat dissimilar physiology, and in their actual food consumption due in part to differential habitat use. LÄS MER