Fremgangsmåde og system til at detektere brugermarkeringer i en maskinlæsbar formular

• Main Authors: Pnevmatikakis, Aristodemos, Diamandis, Argiris
• Format: Patent
• Language: Danish
• Published: 15.01.2018
• Subjects: CALCULATING; COMPUTING; COUNTING; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

Method and system for detecting user marks, comprising placing a form in a field of view of a camera, wherein the form includes thereon at least a first fiducial mark and a second fiducial mark; wherein the fiducial marks both comprise an outline portion and an interior portion; detecting the first and second fiducial marks; utilizing the camera to generate an electronic image of at least a portion of the form; calculating a distance between at least the first fiducial mark and the second fiducial mark; detecting at least a first user marking cell on the form based at least in part upon the calculated distance between the first fiducial mark and the second fiducial mark; calculating a displacement vector of the detected first user marking cell versus an ideal planar position of the detected first user marking cell; detecting at least a second user marking cell on the form, wherein the second user marking cell is detected based at least in part upon the displacement vector of the detected first user marking cell; determining evidence of at the first and second user marks based at least in part upon a degree of brightness similarity between: (a) at least a portion of the electronic image surrounding the indicium bounding the respective user marking cell; and (b) at least a portion of the electronic image included inside the indicium bounding the respectiveuser marking cell.