Abstract: The shape of a leather sheet is inputted though a digitizer. The shape of the leather sheet is disposed inside a rectangle, and dummy parts are arranged around the leather sheet. Assuming the dummy parts as arranged parts, other parts are blocked and other parts are arranged inside the shape of the leather sheet. Attributes such as the orientation and presence/absence of the scratch are added to the shape data on the leather sheet, and parts are so arranged as to match the orientation and scratch allowability suited to the parts. Even a patterning device which handles only a rectangular shape can produce patterns on a sheet of irregular shape such as a leather sheet.

Abstract: The shape of a leather sheet is inputted though a digitizer. The shape of the leather sheet is disposed inside a rectangle, and dummy parts are arranged around the leather sheet. Assuming the dummy parts as arranged parts, other parts are blocked and other parts are arranged inside the shape of the leather sheet. Attributes such as the orientation and presence/absence of the scratch are added to the shape data on the leather sheet, and parts are so arranged as to match the orientation and scratch allowability suited to the parts. Even a patterning device which handles only a rectangular shape can produce patterns on a sheet of irregular shape such as a leather sheet.

Abstract: An automatic cutting machine teaching device includes image processing means and judgment means. The image processing means displays an image of a cutting area on a monitor and superimposes a cutting pattern of corrected making data on a position corresponding to the image of the cutting area displayed on the monitor. The judgment means judges whether the cutting pattern is entirely contained within the cutting area. If the cutting pattern is not entirely contained in the cutting area, the judgment means decides to cause an error and displays a portion of the cutting pattern out of the cutting area on the monitor.