Yarn parameterization and fabrics prediction using image processing

This paper presents the main characteristics and functionalities of a system based on image processing techniques applied to quality assessment of yarns. In Textile Industry we used image processing to determine yarn mass parameters as well as yarn production characteristics. A low cost solution based on a web-pc camera plus the optics of a low cost analogue microscope and a software tool based on IMAQ Vision from LabVIEW was designed. Several tests were performed and compared with other methodologies of yarn parameterization validating the proposed solution. With the results one can support that this can be an alternative solution to the traditional yarn testers, with several advantages (among others, low cost, weight, volume, easy maintenance and reduced hardware). Moreover, this yarn parameterization can be used to assess the quality of the fabrics resultant

Computer simulation of woven structures based on actual yarn photographs

A method has been developed to obtain computer simulations of woven fabric structures based on photographs taken from actual yarns along their lengths. Yarn images are obtained using a digital video camera taking snapshots along the length of an actual yarn drawn intermittently by a yam drawing arrangement designed. The fabric simulations are confined to single fabrics of plain, matt and twill weaves. Yarn curves in the fabric structure are modelled mathematically and projections of yam images in the perpendicular direction to fabric surface are obtained by suitable software developed

Computer simulation of woven structures based on actual yarn photographs

A method has been developed to obtain computer simulations of woven fabric structures based on photographs taken from actual yarns along their lengths. Yarn images are obtained using a digital video camera taking snapshots along the length of an actual yarn drawn intermittently by a yarn drawing arrangement designed. The fabric simulations are confined to single fabrics of plain, matt and twill weaves. Yarn curves in the fabric structure are modelled mathematically and projections of yarn images in the perpendicular direction to fabric surface are obtained by suitable software developed. © Springer-Verlag Berlin Heidelberg 2007