Method for automatic trap selection for correcting for plate misregistration in colour printing

摘要: A method for automatic compensation misregistration of printing plates in polychromatic document pages or images, which a trapping map image is superimposed upon the structured graphic representing layout page from it derived, so as to prevent light leaks and other errors at boundaries between color regions within image. Traps are selected automatically applied boundary comprising set different original The selection process uses results plurality separate methods ranking possible traps each assigned an overall score by means weighted sum ranks obtained methods, with resulting used basis trap among traps. weights applicable previously determined according several such least squares fit procedure judged subjectively "experts" correlated methods.