Patent ID: 7493245
Filing Date: 2009-02-17
Classification: D04B,G01N,G06F,G06T

Abstract:
1. A computer implemented method for simulating an image of a twisted yarn in which twisting of a plurality of yarns is simulated and an image of a twisted yarn is formed, the method comprising: an image input step of inputting images of the plurality of yarns used for twisting, each in a form of an extended line; an abstracting step of producing, based on the images that have been input in the image input step, an abstracted model of each of the yarns that extends in one direction and has a certain cross-section of a predetermined mathematizable shape to abstract each of the yarns, and of setting correspondence between each of the abstracted models and the images; a twisting step of twisting, according to a predetermined condition, the abstracted models of the plurality of yarns that have been abstracted in the abstracting step and of producing an abstracted model of a twisted yarn in a form extending along a central axis thereof; a projection step of projecting the abstracted model of the twisted yarn that has been produced in the twisting step onto a plane that is in parallel with the central axis; and an image reproduction step of reproducing, based on the correspondence that has been set in the abstracting step, the images of the yarns on corresponding projected images of the abstracted models of the yarns included in the abstracted model of the twisted yarn that has been projected onto the plane in the projection step.