Perceptual Dimensions And Evaluation Of Tactile Textures

Fabric tactile textures(namely handle) is a key evaluation for production and marketing area.In recent years,accompanied by the improvement of people's pursuit of the fabric's quality and comfort,as well as the needs of the virtual reproduction fabric touch technology in human-computer interaction platform, textiles' scholars are stimulated to concerned about the tactile texture's evaluation and application,particularly represented by the multi-classify forecast models proposed by KAWABATA,which is improved by the introduction of artificial intelligence algorithms.However,the results tend to deviate from the expected results and its generalization ability is weak.Therefore,it is necessary to study the tactile texture's neuro-psychology and psychological-physics properties and explore the essential of the tactile texture.In this paper,from the perspective of cognitive psychology,perceptual dimensions of tactile textures and characterization are discussed which is beneficial to the quantitative evaluation of fabric hand.The main research work and results carried out is listed as following:(1) Determination of tactile perceptual dimensionsFabric tactile textures are composed of multi-dimensional perceptual attributes; the focus of the study is to identify the primary components of tactile texture space,However,it is indeterminate as well as their meanings yet.In this study,by recordings of semantic experiments on implicit memory,a lot of tactile texture descriptors are collected,and then on that basis,through cluster analysis,together with factor analysis,perceptual dimensions of tactile texture are determined.By clustering analysis,smoothness-roughness,softness-hardness as well as thinness-thickness are judged to be the first three dimensional perceptual space; and the fourth dimension is considered about the sense of stick.The results from factor analysis indicate that the cumulative contribution ratio of the five sets of factors reaches to about 70%,indicating that the results of the cluster analysis can explain the majority perceptual attributes of the tactile texture of fabrics.(2) Identification and characterization of tactile perceptual dimensionsBased on research work(1),the determination of tactile perceptual dimensions, through further physical and psychological experiments of comparison and the estimated,the sensitivities of the tactile perception are discussed on the study of the fabric's surface roughness,bending stiffness,and physical thickness.In addition,a preliminary exploration are taken for the function and distribution of the value of textiles' sensory properties on each touch-dimensional,which found that the properties of the fabric touch psychometric yield to normal distribution function.(3) Tactile texture forecast base on the fabric propertiesBased on the results of the composition of tactile perceptual properties from research work(2),with physical properties measured by KES test,it is using multiple linear regression analysis to forecast the perceptual textile texture,and explaining it from the perspective of cognitive neuroscience.In this thesis,the study established the tactile texture space and analysis of the identification properties in a certain scope of each property dimensions.At the same time,predicted the multiple linear regression model of the perceptual dimensions,explained the dimensions from the perspective of cognitive neuroscience,which is contributed to the science quantitative characterization of fabric the tactile texture,and significant in guiding the production of some practical.