Influences of colour, size and smoothness on visual conspicuity of basic geometric shapes

• Main Authors: Mei-Ting Liu, 劉美廷
• Other Authors: Li-Chen Ou
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/3qsjj9

碩士 === 國立臺灣科技大學 === 色彩與照明科技研究所 === 104 === In this colourful world which is information overload, how can we efficiently get the right information we need? Efficiently visual searching is important. More conspicuous the target is, more attention the target can attract. The relationship between conspicuity and colour attributes, size and smoothness was investigated in this study. Two experiments were conducted in this study. The first experiment was psychological quantification of size and smoothness of rounded triangles, with various round corner ratio, i.e. the diameter of the round corner divided by the height of the shape. The second experiment was conspicuity experiment. The first experiment used psychophysical methods to develop models of psychological quantification of size and smoothness. The models were used to set up the test shapes for use in the second experiment. The visual conspicuity was defined in this study as the reciprocal of reaction time. Observers were asked to find the target from twenty-four shapes as soon as possible. The experiment had four parts : (1) the test of reaction time for mouse movement, (2) the influence of characteristics of the shape on conspicuity, (3) the influence of colours on conspicuity, (4) developing and testing the conspicuity model. The model of mouse movement was derived in the first part of the experiment to exclude the influence of the position of the target. The conspicuity models based on the impact of size, smoothness and colour were developed in the second and the third parts. A final version of the conspicuity model was derived on the basis of the three models for size, smoothness and colour, and was tested in the fourth part of the experiment with satisfactory predictive performance.