Image detection with regionalized image resolution

A technology of image resolution and image detection, applied in image communication, analysis materials, measurement devices, etc., can solve the problems of cost factor increase, installation cost, etc.

Pending Publication Date: 2019-02-12
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this has the disadvantage that the installation outlay and thus the cost factor for the image detection system are thus considerably increased

Method used

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  • Image detection with regionalized image resolution
  • Image detection with regionalized image resolution
  • Image detection with regionalized image resolution

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Embodiment Construction

[0028] Modern image recording technologies (for example scanning strips 9 formed from CIS sensors, and CMOS cameras 9 ) have electronics that allow regionally different actuation of the image detection sensors. This property can be used to regionally vary the resolution at which the image data are transmitted to the attached image processing system, depending on the function (register measurement, image detection or color measurement). Internally, the sensor always operates at the highest resolution, however, this data is aggregated to the desired resolution in the electronics of this proximity sensor. This can be achieved not only in row direction but also in column direction by averaging several rows of image pixels. The scanning strips 9 comprise a plurality (>100) of assembled sensor modules which can be actuated independently. These single sensor modules can also operate at high speeds (>5m / s) with high image resolutions (600dpi).

[0029] In principle, these RGB scanni...

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Abstract

The invention relates to a method for image detection in a machine (14) for processing a substrate by means of a computer (12, 15), wherein image data (16) of a print job is analyzed through a computer (12, 15) during the prepress stage and divided into image regions (2, 3, 4) having different image contents, the different image regions (2, 3, 4) are assigned to different image resolutions, said printed image data (5) is photographed and analyzed by means of an image sensor (9) consisting of individual modules of the image detection system (10). The invention is characterized in that each individual module of the image sensor (9) is capable of applying different image resolutions and is thus driven and controlled by the computer (15) such that different image areas having respective different image resolutions (19) are taken and forwarded to the image detection system (10).

Description

technical field [0001] The invention relates to a method and a system for image detection in a printing press for quality assurance of printed products. [0002] The invention is in the technical field of automatic quality control. Background technique [0003] Many modern printing presses have automated image inspection systems, by means of which the printing results can be checked with regard to print quality. In the case of multicolor printing, not only the achieved target color values ​​are checked, but also the passer, ie the overprinting of the individual color separations. Also check (also in the case of monochrome printing) the register, ie the correct spacing to the edge of the printing substrate, and the general print quality. The latter is concerned with regard to the correct presentation of certain image objects for which it is important that these be presented correctly, for example with regard to edge transitions. Examples of this are barcodes or QR codes, f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88G01N21/956B41F33/00
CPCG01N21/8806G01N21/8851G01N21/95607B41F33/0036G01N2201/062G01N2021/8887H04N1/00002H04N1/00005H04N1/0005H04N1/00058H04N1/0402H04N1/0408H04N1/0426H04N1/0455
Inventor I·费尔根M·施奈德
Owner HEIDELBERGER DRUCKMASCHINEN AG
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