CN107012717B - A kind of paper production control device and method - Google Patents
A kind of paper production control device and method Download PDFInfo
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- CN107012717B CN107012717B CN201710221156.6A CN201710221156A CN107012717B CN 107012717 B CN107012717 B CN 107012717B CN 201710221156 A CN201710221156 A CN 201710221156A CN 107012717 B CN107012717 B CN 107012717B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000000195 production control method Methods 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000007900 aqueous suspension Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/0009—Paper-making control systems
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/94—Investigating contamination, e.g. dust
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8411—Application to online plant, process monitoring
- G01N2021/8416—Application to online plant, process monitoring and process controlling, not otherwise provided for
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Paper (AREA)
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Abstract
The present invention provides a kind of paper production control device and methods, including：The video for receiving the video flowing for acquiring paper production machine production paper by camera, and is streaming to analyzer by network hard disk video recorder；The analyzer is converted to gray-scale map for the image in the video flowing by reception, and according to the gray value of pixel in the gray-scale map, detects and whether there is spot in the paper of production, and exports control instruction according to testing result；The control instruction is used to control the production operation mode of the paper production machine.Invention additionally discloses corresponding paper production control methods.
Description
Technical Field
The invention relates to the technical field of communication, in particular to paper production control equipment and a paper production control method.
Background
At present, paper is mainly produced by a mechanical paper making machine, wherein the paper making machine comprises 3 main parts for finishing the forming, pressing and drying processes, and is provided with necessary finishing, reeling and transmission devices, auxiliary systems for pulp supply, pulp and white water circulation, vacuum, ventilation and exhaust, broken paper treatment, lubrication, automatic control and the like, and the machine is used for making paper by carrying out the processes of filter screen dehydration forming, mechanical extrusion dehydration, drying and the like on pulp water suspension meeting the paper making requirements. However, in the process of producing paper, it is impossible to automatically detect whether stains are present in the paper, and even further, it is impossible to automatically control the production mode of the paper machine when stains are present in the paper.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide a paper production apparatus and method in an attempt to solve or at least alleviate the above-presented problems.
In a first aspect, an embodiment of the present invention provides a paper production control apparatus including:
the network hard disk video recorder is used for receiving a video stream of the paper produced by the paper producing machine collected by the camera and transmitting the video stream to the analyzer;
the analyzer is used for converting the image in the received video stream into a gray-scale image, detecting whether stains exist in the produced paper or not according to the gray-scale value of a pixel point in the gray-scale image, and outputting a control instruction according to the detection result; the control instructions are used for controlling the production operation mode of the paper production machine.
Optionally, the method further comprises:
the PLC interface is used for receiving the control instruction of the analyzer and transmitting the control instruction to the PLC;
and the PLC is used for controlling the production operation mode of the paper production machine according to the control instruction.
Optionally, the analyzer is specifically configured to:
when the analyzer detects the presence of a stain in the produced paper, the control instructions include one or more of the following instructions:
cutting the paper;
suspending paper production;
reducing the paper production speed.
Optionally, the analyzer is specifically configured to detect the presence of stains in the produced paper according to the following steps:
determining the number of pixel points of which the corresponding gray values exceed a first gray threshold value according to the gray values of the pixel points in the gray map;
and when the number of the pixel points is larger than a first number threshold value, determining that stains exist in the produced paper.
Optionally, the analyzer is specifically configured to detect the presence of stains in the produced paper according to the following steps:
dividing the gray scale image into a plurality of pixel blocks according to a set pixel range;
aiming at each divided pixel block, determining the number of the pixel points of which the corresponding gray values exceed a second gray threshold value in the pixel block according to the gray value of each pixel point in the pixel block;
and determining whether stains exist in the produced paper or not according to the number of the pixel points corresponding to each divided pixel block.
Optionally, the analyzer is specifically configured to:
when the number of the pixel points corresponding to at least one pixel block in the divided pixel blocks exceeds a second number threshold, determining that stains exist in the produced paper; or,
determining the number of pixel blocks of which the number of the corresponding pixel points exceeds a second number threshold according to the number of the pixel points corresponding to each divided pixel block;
and when the number of the pixel blocks exceeds a third number threshold value, determining that stains exist in the produced paper.
In a second aspect, embodiments of the present application provide a paper production control method, including:
receiving a video stream of the paper produced by the paper producing machine through a camera by adopting a network hard disk video recorder;
converting an image in a received video stream into a grayscale image;
detecting whether stains exist in the produced paper or not according to the gray values of the pixel points in the gray map;
and controlling the production operation mode of the paper production machine according to the detection result.
Optionally, the detecting whether stains exist in the produced paper according to the gray value of the pixel point in the gray map includes:
determining the number of pixel points of which the corresponding gray values exceed a first gray threshold value according to the gray values of the pixel points in the gray map;
and when the number of the pixel points is larger than a first number threshold value, determining that stains exist in the produced paper.
Optionally, the detecting whether stains exist in the produced paper according to the gray value of the pixel point in the gray map includes:
dividing the gray scale image into a plurality of pixel blocks according to a set pixel range;
aiming at each divided pixel block, determining the number of the pixel points of which the corresponding gray values exceed a second gray threshold value in the pixel block according to the gray value of each pixel point in the pixel block;
and determining whether stains exist in the produced paper or not according to the number of the pixel points corresponding to each divided pixel block.
Optionally, the determining whether stains exist in the produced paper according to the number of the pixel points corresponding to each divided pixel block includes:
when the number of the pixel points corresponding to at least one pixel block in the divided pixel blocks exceeds a second number threshold, determining that stains exist in the produced paper; or,
determining the number of pixel blocks of which the number of the corresponding pixel points exceeds a second number threshold according to the number of the pixel points corresponding to each divided pixel block;
and when the number of the pixel blocks exceeds a third number threshold value, determining that stains exist in the produced paper.
According to the technical scheme of the invention, the image in the video stream is converted into the gray-scale image, whether the produced paper is stained or not is detected according to the gray-scale value of the pixel point in the gray-scale image, the control instruction is generated according to the detection result, and the working mode of the paper production machine is controlled, so that the production quality of the paper can be effectively improved, the labor cost is reduced, and the working efficiency is improved.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a paper production apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a gray scale image comprising a pixel block according to an embodiment of the present invention;
FIG. 3 is a schematic view of a gray scale image of stains according to an embodiment of the present invention;
FIG. 4 is a schematic view of another gray scale stain map provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of an application scenario provided in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a paper production apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a paper production control device and method, which are used for solving the problems that in the prior art, paper stains cannot be detected in the paper production process, and the paper production is controlled when the stains are generated in the paper. The device and the method are based on the same inventive concept, and because the principles of solving the problems of the device and the method are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.
Fig. 1 is a schematic structural diagram of a paper production apparatus according to an embodiment of the present invention. As shown in fig. 1, the apparatus includes: a network video recorder 110 and an analyzer 120.
The network hard disk recorder 110 is used for receiving a video stream of paper produced by the paper producing machine through a camera and transmitting the video stream to the analyzer.
The Network Video Recorder (NVR) is a Video recording device, and is used in cooperation with a Network camera or a Video encoder to record digital Video streams transmitted through a Network, and can be interconnected with devices located at any positions of the Network to realize rapid deployment without being limited by regions.
The camera may be, but is not limited to, a webcam (IPC), a video encoder (DVS), a depth camera, a mobile terminal with a camera function, and the like, and the video stream is generally a digital video stream, which is not limited in this respect.
The analyzer 120 is configured to convert an image in the received video stream into a gray-scale image, detect whether stains exist in the produced paper according to gray-scale values of pixel points in the gray-scale image, and output a control instruction according to a detection result. Wherein the control instructions are used for controlling the production operation mode of the paper production machine.
The analyzer may be, but is not limited to, a computing device, a terminal with processing functionality, a server, etc., as the present invention is not limited in this respect.
Generally, an image in the video stream refers to an image in the video stream, the image is a color image, that is, the color of each pixel in the image is determined by 3 components, namely red (R), green (G), and blue (B), and the value interval of each component is [0, 255 ].
As can be seen from the above discussion, the image is binarized to generate a gray scale map, and the gray scale value of each pixel in the gray scale map is 0 to 255.
Optionally, the analyzer 120 is specifically configured to detect the presence of stains in the produced paper according to the following steps:
determining the number of pixel points of which the corresponding gray values exceed a first gray threshold value according to the gray values of the pixel points in the gray map;
and when the number of the pixel points is larger than the first number threshold value, determining that stains exist in the produced paper.
For example, the gray value of each pixel in the gray map is counted, and the number of pixels with gray values greater than a first gray threshold, for example, 100, is screened from the statistical result. And if the number of the screened pixel points is larger than a first number threshold (such as 100), determining that the paper has stains. The size of the first gray threshold and the first number threshold should be determined as the case may be, and the examples herein are merely illustrative.
Optionally, the analyzer 120 is specifically configured to detect the presence of stains in the produced paper according to the following steps:
dividing the gray scale image into a plurality of pixel blocks according to a set pixel range;
aiming at each divided pixel block, determining the number of the pixel points of which the corresponding gray values exceed a second gray threshold value in the pixel block according to the gray value of each pixel point in the pixel block;
and determining whether stains exist in the produced paper or not according to the number of the pixel points corresponding to each divided pixel block.
For example, referring to fig. 2, the gray scale map is divided into 4 pixel blocks in a set pixel range (e.g., n × n), the gray scale value of each pixel in each pixel block is counted, and the number of the pixels in each pixel block whose gray scale value is greater than a second gray scale threshold, e.g., 50, is counted. The magnitude of the second gray level threshold should be determined according to the specific situation, and is not limited herein.
Optionally, the analyzer 120 determines whether stains exist in the produced paper according to the number of the pixel points corresponding to each of the divided pixel blocks, and is implemented by any one of the following manners:
when the number of the pixel points corresponding to at least one pixel block in the divided pixel blocks exceeds a second number threshold, determining that stains exist in the produced paper;
or,
determining the number of pixel blocks of which the number of the corresponding pixel points exceeds a second number threshold according to the number of the pixel points corresponding to each divided pixel block;
and when the number of the pixel blocks exceeds a third number threshold value, determining that stains exist in the produced paper.
For example, referring to fig. 3, it is counted whether the number of pixel points in each pixel block (4 pixel blocks) that are greater than the second gray threshold exceeds a second number threshold (for example, 50), and as long as the above situation is found in one pixel block, it is considered that stains exist in the produced paper. The size of the second number threshold should be determined according to the specific situation and is not limited herein.
For example, referring to fig. 4, the number of pixels having a gray value greater than the second gray threshold in each pixel block (e.g., 4 pixel blocks) is counted, and the number of pixels having a gray value greater than the second gray threshold (e.g., 2 pixel blocks) is counted. Subsequently, it is determined whether the number of pixel blocks exceeds a third number threshold (e.g., 1), and if the number of pixel blocks exceeds the third number threshold, it is determined that stains are present in the produced paper.
Optionally, the analyzer 120 is specifically configured to include one or more of the following instructions in the control instructions when the analyzer detects the presence of a stain in the produced paper:
cutting the paper; suspending paper production; reducing the paper production speed.
For example, upon determining that stains are present in the produced paper, a control instruction is generated that can control a cutter in the paper producing machine to cut the stained paper while the paper producing machine can continue to produce paper; or the control instruction can control the paper production machine to suspend paper production work, field workers process the paper, and the workers restart the paper production machine; alternatively, the control instructions may control the paper production machine to reduce the paper production speed, i.e., reduce the speed of the paper production machine, so that the operator can process the soiled paper and subsequently resume the speed of the paper production machine.
As an alternative embodiment, the present invention may further include: a Programmable Logic Controller (PLC) interface and a Programmable Logic Controller (PLC).
And the PLC interface is used for receiving the control instruction of the analyzer and transmitting the control instruction to the PLC. And the PLC is used for controlling the production operation mode of the paper production machine according to the control instruction.
For example, referring to fig. 5, the analyzer, upon detecting the presence of contaminants in the paper and generating a control command, sends the control command to the PLC via the PLC interface, which controls the paper production machine to perform operations such as cutting the paper, pausing paper production, reducing paper production speed, and the like. There are various controllers for controlling the operation of the paper machine, and the present invention is not limited thereto.
According to the technical scheme of the invention, the image in the video stream is converted into the gray-scale image, whether the produced paper is stained or not is detected according to the gray-scale value of the pixel point in the gray-scale image, the control instruction is generated according to the detection result, and the working mode of the paper production machine is controlled, so that the production quality of the paper can be effectively improved, the labor cost is reduced, and the working efficiency is improved.
Fig. 6 is a flowchart of a paper production control method according to an embodiment of the present invention. As shown in fig. 6, the method is executed in the sheet production control apparatus, starting at step S610.
In step S610, a network hard disk recorder is used to receive a video stream of paper produced by a paper producing machine through a camera.
In step S620, the image in the received video stream is converted into a grayscale map.
In step S630, whether stains exist in the produced paper is detected according to the gray values of the pixel points in the gray map.
Optionally, the detecting whether stains exist in the produced paper according to the gray value of the pixel point in the gray map includes:
determining the number of pixel points of which the corresponding gray values exceed a first gray threshold value according to the gray values of the pixel points in the gray map;
and when the number of the pixel points is larger than a first number threshold value, determining that stains exist in the produced paper.
Optionally, the detecting whether stains exist in the produced paper according to the gray value of the pixel point in the gray map includes:
dividing the gray scale image into a plurality of pixel blocks according to a set pixel range;
aiming at each divided pixel block, determining the number of the pixel points of which the corresponding gray values exceed a second gray threshold value in the pixel block according to the gray value of each pixel point in the pixel block;
and determining whether stains exist in the produced paper or not according to the number of the pixel points corresponding to each divided pixel block.
Optionally, the determining whether stains exist in the produced paper according to the number of the pixel points corresponding to each divided pixel block includes:
when the number of the pixel points corresponding to at least one pixel block in the divided pixel blocks exceeds a second number threshold, determining that stains exist in the produced paper; or,
determining the number of pixel blocks of which the number of the corresponding pixel points exceeds a second number threshold according to the number of the pixel points corresponding to each divided pixel block;
and when the number of the pixel blocks exceeds a third number threshold value, determining that stains exist in the produced paper.
In step S640, the production operation mode of the paper sheet producing machine is controlled according to the detection result.
Optionally, according to one or more of the following instructions: cutting the paper; suspending paper production; the production operation mode of the paper production machine is controlled by reducing the paper production speed.
The paper production control device provided by the embodiment of the invention can be specific hardware on the device or software or firmware installed on the device. The device provided by the embodiment of the present invention has the same implementation principle and technical effect as the method embodiments, and for the sake of brief description, reference may be made to the corresponding contents in the method embodiments without reference to the device embodiments. It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the foregoing systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments provided by the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures, and moreover, the terms "first", "second", "third", etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the present invention in its spirit and scope. Are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A paper production control apparatus characterized by comprising:
the network hard disk video recorder is used for receiving a video stream of the paper produced by the paper producing machine collected by the camera and transmitting the video stream to the analyzer;
the analyzer is used for converting an image in a received video stream into a gray-scale image, dividing the gray-scale image into a plurality of pixel blocks according to a set pixel range, determining the number of pixel points with gray values exceeding a gray-scale threshold value in each divided pixel block according to the gray value of each pixel point in the pixel block, determining whether stains exist in the produced paper according to the number of the pixel points corresponding to each divided pixel block, and when the number of the pixel points corresponding to at least one pixel block in the divided pixel blocks exceeds a first number threshold value, determining that stains exist in the produced paper and outputting a control instruction according to a detection result; the control instructions are used for controlling the production operation mode of the paper production machine.
2. The apparatus of claim 1, further comprising:
the PLC interface is used for receiving the control instruction of the analyzer and transmitting the control instruction to the PLC;
and the PLC is used for controlling the production operation mode of the paper production machine according to the control instruction.
3. The apparatus of claim 1, wherein the analyzer is specifically to:
when the analyzer detects the presence of a stain in the produced paper, the control instructions include one or more of the following instructions:
cutting the paper;
suspending paper production;
reducing the paper production speed.
4. The apparatus of claim 1, wherein the analyzer is specifically to:
determining the number of pixel blocks of which the number of the corresponding pixel points exceeds a first number threshold according to the number of the pixel points corresponding to each divided pixel block;
and when the number of the pixel blocks exceeds a second number threshold value, determining that stains exist in the produced paper.
5. A paper production control method characterized by comprising:
receiving a video stream of the paper produced by the paper producing machine through a camera by adopting a network hard disk video recorder;
converting an image in a received video stream into a grayscale image;
dividing the gray scale image into a plurality of pixel blocks according to a set pixel range;
aiming at each divided pixel block, determining the number of the pixel points of which the corresponding gray values exceed a gray threshold value in the pixel block according to the gray value of each pixel point in the pixel block;
determining whether stains exist in the produced paper or not according to the number of the pixel points corresponding to each divided pixel block;
when the number of the pixel points corresponding to at least one pixel block in the divided pixel blocks exceeds a first number threshold, determining that stains exist in the produced paper;
and controlling the production operation mode of the paper production machine according to the detection result.
6. The method of claim 5, wherein said determining whether stains are present in the produced paper according to the number of said pixel points corresponding to said each divided pixel block comprises:
determining the number of pixel blocks of which the number of the corresponding pixel points exceeds a first number threshold according to the number of the pixel points corresponding to each divided pixel block;
and when the number of the pixel blocks exceeds a second number threshold value, determining that stains exist in the produced paper.
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| CN108460900A (en) * | 2018-03-02 | 2018-08-28 | 深圳怡化电脑股份有限公司 | A kind of method, apparatus, equipment and storage medium for calculating bank note and being stained grade |
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| JPH04352895A (en) * | 1991-05-30 | 1992-12-07 | Toshiba Corp | Controller of paper machine |
| WO2005076230A1 (en) * | 2004-02-05 | 2005-08-18 | Nv Bekaert Sa | Optical system for controlling value documents |
| WO2009099150A1 (en) * | 2008-02-05 | 2009-08-13 | Kabushiki Kaisha Toshiba | Paper sheet processing device and paper sheet processing method |
| CN202002894U (en) * | 2011-01-10 | 2011-10-05 | 山东轻工业学院 | Quick online paper flaw detecting system based on machine vision |
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| US9753444B2 (en) * | 2013-03-06 | 2017-09-05 | Mitsubishi Electric Corporation | Programmable controller, programmable controller system, and method of creating execution error information |
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| CN104297255B (en) * | 2014-10-15 | 2015-08-26 | 西安交通大学 | A kind of dixie cup defective vision detection method and system and device |
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2017
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