Sökning: "colouration"

Visar resultat 11 - 15 av 18 uppsatser innehållade ordet colouration.

  1. 11. Utvärdering utav benfintliga metoder för synlig digital vattenmärkning av statiska bilder

    Kandidat-uppsats, Lunds universitet/Högskoleingenjörsutbildning i datateknik

    Författare :Tobias Bengtsson; [2012]
    Nyckelord :synlig digital vattenmärkning bilder; Technology and Engineering;

    Sammanfattning : Digital watermarking is done by adding a piece of data to a signal, which depending on the target media type, may be a picture, audio or video signal. The purpose of this additional signal is to provide a consistent signature linked to the original source which then remains through the act of copying. LÄS MER

  3. 12. Fossil pigments and pigment organelles - colouration in deep time

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Ellinor Martin; [2012]
    Nyckelord :ommochrome; paleobiology; Green Riverformationen; Furformationen; fjädrar; insekter; fossil; ommokrom; paleobiologi; melanin; insect; feather; Fur Formation; Green River Formation.; Earth and Environmental Sciences;

    Sammanfattning : Pigmentation is important in all animals and plants, e.g., for protection against radiation, for signalling and as camouflage. The fossil record contains both colourful bird feathers and insect cuticles. LÄS MER

  4. 13. Effects of the adaptive background in the spectral sensitivity of budgerigars (Melopsittacus undulatus)

    Master-uppsats, Lunds universitet/Examensarbeten i biologi

    Författare :Johanna Chávez; [2012]
    Nyckelord :Biology and Life Sciences;

    Sammanfattning : ABSTRACT The objective of this project was to study if the adaptive background affects the spectral sensitivity of budgerigars (Melopsittacus undulatus) tested in bright light. Two budgerigars were trained, by associative learning with food rewards, in dual choice tests to discriminate monochromatic light stimuli of nine different wavelengths from an adaptive background with ultraviolet light (UV) content. LÄS MER

  5. 14. Färgval hos blomkrabbspindeln (Misumena vatia) med och utan konkurrens

    Kandidat-uppsats, Institutionen för kultur, energi och miljö

    Författare :Sanna Kangasniemi; [2011]
    Nyckelord :Spindlar; färgval; konkurrens; kamouflage;

    Sammanfattning : The colour choice of spiders and the effects of competition on this phenomenon were examined in the laboratory using the sit-and-wait predator goldenrod crab spider (Misumena vatia, (Thomisidae)). This species can  be both white and yellow (could also change colour)  and it was here examined whether individuals preferred to sit on flowers which has the same colouration as their bodies. LÄS MER

  7. 15. Tryckta Texturer : Färgade Floder

    Kandidat-uppsats, Högskolan i Borås/Institutionen Textilhögskolan

    Författare :Evelina Tufvesson; [2011]
    Nyckelord :textildesign; digitaltryck; skissteknik; textile design; pattern; digital print; sketching techniques; mönster; textiltryck; metervara;

    Sammanfattning : Tryckta Texturer – Färgade Floder, är ett lekfullt undersökande i hur man kan skapa mönster med illusioner av struktur på textil. Inspiration till projektet hämtas i vattnets böljande former, dess färgskiftningar och blanka yta. LÄS MER