Sökning: "colour experiments"

Visar resultat 1 - 5 av 63 avhandlingar innehållade orden colour experiments.

1. 1. Shape from shading, colour constancy, and deutan colour vision deficiencies

   Författare :Torbjörn Jakobsson; Karl-Arne Gustafsson; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; 3-D perception; ambiguous figures; attached shadows; cast shadows; colour constancy; colour vision deficiency; deuteranomaly; deuteranopia; shape- from-shading;

   Sammanfattning : Four studies including ten experiments adresses interrelations between some major and classical issues in visual perception: 3-D perception, colour constancy, colour perception and colour vision deficiencies. The main experimental paradigm to investigate the issues is within that of simulated shape from shading. LÄS MER

3. 2. Early Discourses on Colour and Cinema : Origins, Functions, Meanings

   Författare :Eirik Frisvold Hanssen; Astrid Söderbergh Widding; Eva Jørholt; Stockholms universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; colour film; film history; film theory; film technology; film aesthetics; indexicality; intermediality; colour and sound; catalogue; Kinemacolor; Sergei M. Eisenstein; Film; Filmvetenskap;

   Sammanfattning : This dissertation is a historical and theoretical study of a number of discourses examining colour and cinema during the period 1909 to 1935 (trade press, film reviews, publications on film technology, manuals, catalogues and theoretical texts from the era). In this study, colour in cinema is considered as producing a number of aesthetic and representational questions which are contextualised historically; problems and qualities specifically associated with colour film are examined in terms of an interrelationship between historical, technical, industrial, and stylistic factors, as well as specific contemporary conceptions of cinema. LÄS MER

4. 3. Colour Vision in Birds : Comparing behavioural thresholds and model predictions

   Författare :Peter Olsson; Funktionell zoologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Gallus gallus; receptor noise; visual modelling; animal training; colour discrimination; colour constancy;

   Sammanfattning : Birds use colour vision for many biologically relevant behaviours such as foraging and mate choice. Bird colour vision is mediated by four types of single cones, giving them an extra dimension of colour information compared to trichromatic humans. LÄS MER

5. 4. Liksom ett par nya ögon. Frithiof Holmgren och synsinnets problematik

   Författare :Jan-Eric Olsén; Avdelningen för idé- och lärdomshistoria; []
   Nyckelord :HUMANIORA; HUMANITIES; history of ideas; History of philosophy; vivisections; colour perception; colour-blindness; the visual organ; the human body; sensations; scientific ideals; industrial technology; Frithiof Holmgren; scientific instruments; physiological experiments; laboratory medicine; physiology; Filosofins historia; idéhistoria; History of science; Vetenskapshistoria;

   Sammanfattning : This study deals with research on the visual organ as pursued in experimental physiology during the latter half of the nineteenth-century. In the 1850's och 60's experimental physiology developed as a new, scientific discipline within the curriculum of western medicine. LÄS MER

7. 5. Bird Vision: Spatial acuity and colour discrimination in bright and dim light

   Författare :Olle Lind; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Animal vision; Visual ecology; Colour vision; Spatial acuity; Spatial contrast sensitivity; Dim light; Visual modelling; Behavioural experiments; Birds; Psittaciformes;

   Sammanfattning : Birds use vision to guide navigation, foraging and mate choice, and studies of the limitations in bird visual perception are most helpful for the understanding of bird ecology. Here, I present four studies of bird vision in bright and dim light. LÄS MER