Image inspection method with a plurality of cameras

An inspection method and image technology, applied in image enhancement, image analysis, signal generator with multiple pick-up devices, etc., can solve the problem that printing personnel cannot engage in printing monitoring

Active Publication Date: 2017-09-12
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This resulted in a huge workload for the printing staff, during which time the printing staff could not engage in other necessary matters of printing monitoring

Method used

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  • Image inspection method with a plurality of cameras
  • Image inspection method with a plurality of cameras
  • Image inspection method with a plurality of cameras

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Embodiment Construction

[0041] Figure 8 The flow of the method according to the invention is schematically shown. The printing job is started with the print job data and is image-captured with the camera system 32 of the image inspection system 28 during continuous printing. here, in Figure 9 An image inspection system 28 is schematically shown in . In addition to the printing press 31 itself, the image inspection system 28 includes a camera system 32 installed in the printing press 31 and an image processing computer 33 connected directly to the camera system 32 and to the control computer 29 of the printing press 31 . In this case, the control computer 29 forms the interface to the user 27 with its display 30 . The camera system 32 itself is in Figure 10 is schematically shown again. The camera system 32 is installed inside the printing press 31 (usually after the last printing unit) and comprises two digital cameras 35 arranged horizontally side by side in the form of electronic line scan...

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Abstract

A digital image inspection method checks printing material processing machine products by recording digital printed partial images using recording devices and combining partial images in an image processing computer forming a digital overall image causing abutment edges at an overlap. The image processing computer inspects the digital overall image and transmits a result to a machine control computer. The image processing computer creates a new image, only containing detected edges, using edge detection methods after combining partial images forming a digital overall image. The image processing computer uses known positions of abutment edges of recording devices to create a further new image only containing regions with abutment edges of recording devices. The image processing computer overlays the new images, providing a resultant image containing only edges along abutment edges of recording devices. The image processing computer applies the resultant image to the digital overall image, defining masking zones in the resultant digital overall image not being checked by image inspection.

Description

technical field [0001] The invention relates to a digital image inspection method using multiple cameras. [0002] The invention is in the technical field of automated quality control of printed products. Background technique [0003] In the printing industry, the automatic quality control of the printed products produced has been known for a long time. For this purpose, the produced printed product is usually image-wise detected using a camera system consisting of one or more digital cameras. In this case, the digital camera can be installed both inside the printing press (advantageously after the last printing unit) or outside the printing press on the stacker. [0004] In this case, a system with an internally installed digital camera is in most cases an integral part of the printing press itself, whereas an image inspection system with an externally installed digital camera is mostly external and Systems that work independently, however, these external and independent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/04G01N21/89G06V10/147
CPCG01N21/8914H04N23/10G06V10/993G06V10/147H04N23/13G06T7/13B41F7/02G06K15/02G06T7/0004G06T11/60G06T2207/10004G06T2207/10024G06T2207/20221G06T2207/30144
Inventor F·许曼
Owner HEIDELBERGER DRUCKMASCHINEN AG
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