| 摘要 |
Performing automatic inspection on the results of a print job that prints variable data, including multiple printed instances of a page containing variable graphics. The inspection is to detect printing defects on a printed instance. In one embodiment, the method includes dividing the page into multiple non-overlapping areas using a page division map. The non-overlapping areas include one or more static areas that include only static graphics and one or more areas that include variable graphics. The method includes capturing an image of the printed instance and, for each of the non-overlapping areas, retrieving an indication indicating whether or not the area includes any variable graphics, retrieving a rasterized image of an instant of the area from a memory location according to the indication, and comparing the rasterized image with the captured image of the area to detect any printing defects in the area of the printed instance. |
| 主权项 |
1. A method of operating an inspection system for inspecting a job of printing, the printing to generate a sequence of printed instances of a page, each printed instance having an instance-identifier in the sequence, the page including a plurality of elements including one or more static elements that are fixed from instance to instance and one or more variable elements that vary from instance to instance, the inspecting to detect any printing defects in a printed instance, the method comprising:
capturing an image of the printed instance; dividing the page into multiple non-overlapping areas, the dividing using a division map prepared for the page, the non-overlapping areas including one or more areas that each does not include even one variable part of any variable element, and one or more areas that each includes variable graphics comprising at least a variable part of at least one variable element, each non-overlapping area having an area-identifier according to the division map;for each of the non-overlapping areas:
retrieving an indication from a pre-stored data structure prepared by a data-structure-forming method, the retrieved indication indicating whether the area is a static area that includes no variable data or the area includes at least a part of at least one variable element; retrieving a rasterized image from a memory location according to the indication, the rasterized image being generated by rasterizing each element and element part in the area of the page; comparing the rasterized image with the area of the captured image to detect any printing defects in the area of the printed instance,wherein the retrieving of the rasterized image depends on the retrieved indication, and comprises:
in the case that the indication indicates that the area is a static area that does not include any variable element or any variable part thereof, retrieving a rasterized static image from a first memory location, the rasterized static image being generated by rasterizing the one or more element and element parts in the static area of the page; and in the case that the indication indicates that the area is a variable area that includes, together with any static data, at least a variable part of at least one variable element, retrieving a rasterized variable image from a second memory location, the rasterized variable image retrieved form a set of rasterized variable images that each includes one instance of any included variable element or variable part, the determination using the instance-identifier of the printed instance in the sequence, andwherein the first memory location and the second memory location are accessed using the area-identifier of the area according to the division map. |
