CN109624414B - Correction system and correction method based on image processing - Google Patents
Correction system and correction method based on image processing Download PDFInfo
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- CN109624414B CN109624414B CN201811557685.4A CN201811557685A CN109624414B CN 109624414 B CN109624414 B CN 109624414B CN 201811557685 A CN201811557685 A CN 201811557685A CN 109624414 B CN109624414 B CN 109624414B
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- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
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Abstract
The embodiment of the application provides a correction system and a correction method based on image processing, wherein a preheating cylinder is used for preheating conveyed base paper, and image shooting equipment is used for shooting to obtain image information of a paperboard obtained after preheating, bonding and cutting. The obtained image information is analyzed by the image processing apparatus to obtain the bending direction and bending data of the sheet, and the bending direction and bending data are sent to the feedback control apparatus. And finally, the feedback control equipment adjusts the wrap angle amount of the preheating cylinder according to the bending direction and the bending data of the paperboard so as to change the temperature of the base paper and correct the flatness of the obtained paperboard. According to the correction mode, the bending direction and the bending data of the paperboard are obtained by shooting the image and analyzing the image, and the flatness of the subsequent paperboard is improved by utilizing the feedback control equipment to perform real-time and automatic adjustment, so that the cost is lower, the realization is more convenient, the delay is lower, and the feedback is more timely.
Description
Technical Field
The invention relates to the technical field of automatic control, in particular to a correction system and a correction method based on image processing.
Background
In the production process of the paperboard, the paperboard can be bent to a certain degree due to various factors (uneven base paper moisture, untimely temperature adjustment during production speed change, mechanical reasons and the like). At present, the correction of the bending of the paperboard is mainly solved by human eyes or installing certain auxiliary tools, the current auxiliary tool mainly adopts the laser ranging technology, and whether the paperboard is flat or not is judged through multipoint ranging. After judging whether the paper board is flat or not, the wrap angle amount of the preheating cylinder is adjusted, so that the moisture of the paper board is adjusted. The technology adopting laser multipoint distance measurement needs a plurality of laser detection devices during implementation, multipoint distance statistics and conversion are carried out, the cost is high, and the realization is complex.
Disclosure of Invention
In view of the above, the present application provides a correction system and a correction method based on image processing to improve the above problem.
The embodiment of the application provides a correction system based on image processing, which comprises image shooting equipment, image processing equipment, feedback control equipment and a preheating cylinder, wherein the image processing equipment is respectively connected with the image shooting equipment and the feedback control equipment;
the preheating cylinder is used for preheating the conveyed base paper;
the image shooting equipment is used for shooting the image information of the paperboard which is preheated by the preheating cylinder and is obtained through the bonding and cutting processes, and sending the image information to the image processing equipment;
the image processing equipment is used for analyzing and processing the image information to obtain the bending direction and the bending data of the paperboard and sending the bending direction and the bending data to the feedback control equipment;
and the feedback control equipment is used for adjusting the wrap angle amount of the preheating cylinder according to the bending direction and the bending data so as to change the temperature of the base paper and correct the flatness of the obtained paperboard.
Optionally, the image processing apparatus obtains the bending data of the sheet by:
the image processing device is used for obtaining the highest point and the lowest point of the paper board in the image information relative to a reference plane in a first direction perpendicular to the reference plane;
and obtaining a first coordinate value of the highest point in the first direction and a second coordinate value of the lowest point in the first direction, and obtaining bending data of the paperboard according to the first coordinate value and the second coordinate value.
Optionally, the image processing apparatus obtains the bending direction of the sheet by:
detecting whether the highest point exists in two end points of the paper board in the image information in a second direction perpendicular to the first direction;
if the highest point exists in the two end points, determining that the paperboard is bent upwards;
and if the highest point does not exist in the two end points, determining that the paperboard is bent downwards.
Optionally, the calibration system further comprises an adjusting mechanism, and the adjusting mechanism is respectively connected with the preheating cylinder and the feedback control device;
the feedback control equipment is used for correspondingly increasing the wrap angle amount of the preheating cylinder through the adjusting mechanism according to the bending data when the bending direction is upward bending; or
And the feedback control equipment is used for correspondingly reducing the wrap angle amount of the preheating cylinder through the adjusting mechanism according to the bending data when the bending direction is downward bending.
Optionally, the system further comprises a sensing device, which is disposed in the preheating cylinder and connected to the feedback control device, and is configured to monitor a wrap angle amount of the base paper in the preheating cylinder and send the monitored wrap angle amount to the feedback control device.
The embodiment of the application also provides a correction method based on image processing, which is applied to a correction system based on image processing, wherein the system comprises an image shooting device, an image processing device, a feedback control device and a preheating cylinder, and the method comprises the following steps:
the preheating cylinder preheats the conveyed base paper;
the image shooting equipment shoots image information of the paperboard which is preheated by the preheating cylinder and subjected to the bonding and cutting processes, and sends the image information to the image processing equipment;
the image processing equipment analyzes and processes the image information to obtain the bending direction and the bending data of the paperboard and sends the bending direction and the bending data to the feedback control equipment;
and the feedback control equipment adjusts the wrap angle amount of the preheating cylinder according to the bending direction and the bending data so as to change the temperature of the base paper and correct the flatness of the obtained paperboard.
Optionally, the step of analyzing and processing the image information by the image processing device to obtain the bending direction and the bending data of the paper sheet includes:
the image processing device obtains the highest point and the lowest point of the paper board in the image information relative to a reference plane in a first direction perpendicular to the reference plane;
obtaining a first coordinate value of the highest point in the first direction and a second coordinate value of the lowest point in the first direction, and obtaining bending data of the paperboard according to the first coordinate value and the second coordinate value;
and determining the bending direction of the paperboard according to the coordinate information of two end points of the paperboard in a second direction perpendicular to the first direction in the first direction.
Optionally, the step of determining the bending direction of the cardboard according to the coordinate information of two end points of the cardboard in a second direction perpendicular to the first direction in the first direction further comprises:
detecting whether the highest point in a first direction exists in two end points of the paper board in the image information in a second direction perpendicular to the first direction;
if the highest point exists in the two end points, determining that the paperboard is bent upwards;
and if the highest point does not exist in the two end points, determining that the paperboard is bent downwards.
Optionally, the correction system further includes an adjusting mechanism, and the step of adjusting the wrap angle amount of the preheating cylinder by the feedback control device according to the bending direction and the bending data to change the base paper temperature so as to correct the flatness of the obtained paperboard includes:
when the bending direction is upward bending, the feedback control equipment correspondingly increases the wrap angle amount of the preheating cylinder through the adjusting mechanism according to the bending data so as to change the temperature of the base paper and modify the flatness of the obtained paperboard; or
And when the bending direction is downward bending, the feedback control equipment correspondingly reduces the wrap angle amount of the preheating cylinder through the adjusting mechanism according to the bending data so as to change the temperature of the base paper and correct the flatness of the obtained paperboard.
Optionally, the system further comprises a sensing device, and the method further comprises:
the sensing equipment monitors the wrap angle amount of the base paper in the preheating cylinder and sends the monitored wrap angle amount to the feedback control equipment.
According to the correction system and the correction method based on image processing, the preheating cylinder is used for preheating the conveyed base paper, and the image shooting equipment is used for shooting to obtain the image information of the paperboard obtained after preheating, bonding and cutting. The obtained image information is analyzed by the image processing apparatus to obtain the bending direction and bending data of the sheet, and the bending direction and bending data are sent to the feedback control apparatus. And finally, the feedback control equipment adjusts the wrap angle amount of the preheating cylinder according to the bending direction and the bending data of the paperboard so as to change the temperature of the base paper and correct the flatness of the obtained paperboard. According to the correction mode, the bending direction and the bending data of the paperboard are obtained by shooting the image and analyzing the image, and the flatness of the subsequent paperboard is improved by utilizing the feedback control equipment to perform real-time and automatic adjustment, so that the cost is lower, the realization is more convenient, the delay is lower, and the feedback is more timely.
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 block diagram of a correction system based on image processing according to an embodiment of the present disclosure.
Fig. 2 is one of schematic structural diagrams of a paperboard provided in an embodiment of the present application.
Fig. 3 is a second schematic structural diagram of a paperboard provided in the embodiment of the present application.
Fig. 4 is a second block diagram of a correction system based on image processing according to an embodiment of the present application.
Fig. 5 is a flowchart of a correction method based on image processing according to an embodiment of the present application.
Icon: 100-preheating a cylinder; 200-an image capture device; 300-an image processing device; 400-a feedback control device; 500-an adjustment mechanism; 600-sensing device.
Detailed Description
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.
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.
Referring to fig. 1, an embodiment of the present application provides a correction system based on image processing, which includes an image capturing apparatus 200, an image processing apparatus 300, a feedback control apparatus 400, and a preheating cylinder 100. The image processing apparatus 300 is connected to the image capturing apparatus 200 and the feedback control apparatus 400, respectively, and the feedback control apparatus 400 is also connected to the preheating cylinder 100.
Wherein, the preheating cylinder 100 is used for preheating the body paper that is carried to preheating cylinder 100, preheating cylinder 100 can include multistage preheating cylinder, for example one-level preheating cylinder, second grade preheating cylinder and tertiary preheating cylinder, and the body paper can include corrugated paper 1, corrugated paper 2 and corrugated paper 3. The corrugated paper 1, the corrugated paper 2 and the corrugated paper 3 can be preheated by a first-stage preheating cylinder, a second-stage preheating cylinder and a third-stage preheating cylinder respectively.
The corrugated paper 1, the corrugated paper 2 and the corrugated paper 3 after the preheating treatment are dried and bonded, and the paperboard is obtained after the paperboard cutting procedure.
The image photographing apparatus 200 is disposed at a sheet output position to photograph the resulting image information of the sheet and transmit the resulting image information to the image processing apparatus 300. In this embodiment, the image capturing apparatus 200 may be a capturing apparatus with an image capturing function, such as an image capturing apparatus and a snapshot camera, and the specific type of the image capturing apparatus is not limited in this embodiment.
The image processing apparatus 300, after receiving the image information sent by the image capturing apparatus 200, performs analysis processing on the image information to obtain the bending direction and bending data of the paper sheet. And transmits the bending direction and the bending data to the feedback control apparatus 400.
In this embodiment, the image processing apparatus 300 is a processing apparatus having data and image processing functions, such as a microprocessor, and the like, and the specific type of this embodiment is not limited.
The feedback control apparatus 400, upon receiving the bending direction and the bending data of the board, will adjust the wrap angle amount of the preheating cylinder 100 according to the obtained bending direction and bending data to change the base paper temperature to modify the flatness of the obtained board.
In the present embodiment, the image processing apparatus 300 may obtain the bending direction and the bending data of the sheet in the image by performing analysis processing on the image obtained by the image capturing apparatus 200. Optionally, the image processing apparatus 300 may be configured to obtain the highest point and the lowest point of the cardboard in the image information relative to a reference plane in a first direction perpendicular to the reference plane. Wherein the reference plane may be a plane on which the cardboard is placed, such as a floor, a table top, etc. And the first direction perpendicular to the reference plane may be a vertical direction.
As shown in fig. 2, if the bending direction of the paperboard is upward bending, the lowest point of the paperboard may be point a and the highest point of the paperboard may be point B or point C, or point B and point C, in the vertical direction. In this case, a first coordinate value of the highest point (i.e., point B and/or point C) in the vertical direction may be obtained, and a second coordinate value of the lowest point (point a) in the vertical direction may be obtained. And then bending data of the paperboard is obtained according to the obtained first coordinate value of the highest point and the second coordinate value of the lowest point.
For example, the bending data of the cardboard can be obtained directly according to the difference value between the highest point and the lowest point, or a preset number of points are selected between the highest point and the lowest point, and the coordinate values of each point in the first direction are respectively obtained, and then the bending data of the cardboard is obtained according to the first coordinate value of the highest point, the second coordinate value of the lowest point and the coordinate values of each point in the middle. Specifically, the present embodiment is not limited, and may be set according to actual requirements.
Further, as shown in fig. 3, if the bending direction of the cardboard is downward bending, the lowest point of the cardboard in the vertical direction may be D point or E point in fig. 3, or both D point and E point may be the lowest point. And the highest point of the cardboard may be point F in the figure. In this case, a first coordinate value of the highest point (F point) in the vertical direction and a second coordinate value of the lowest point (D point and/or E point) in the vertical direction may be obtained. And then bending data of the paperboard is obtained according to the obtained first coordinate value of the highest point and the second coordinate value of the lowest point.
Also, as in the above case, the bending data of the sheet may be directly obtained from the first coordinate value of the highest point and the second coordinate value of the lowest point. On the basis, the coordinate values of a plurality of points in the middle of the highest point and the lowest point can be combined to obtain the bending data of the paperboard, and the method is not limited in details.
Alternatively, in the present embodiment, the image processing apparatus 300 may also derive the bending direction of the sheet according to the processing of the image information, which is important for the subsequent adjustment of the wrap angle amount of the preheating cylinder 100.
Alternatively, the image processing apparatus 300 may detect whether the cardboard in the image information has a highest point among two end points in a second direction perpendicular to the first direction. Wherein the second direction may be a horizontal direction. That is, as shown in fig. 2, both end points of the sheet in the second direction may be a point B and a point C.
On the basis of obtaining the two end points, whether the highest point exists in the two end points is detected, namely whether one point exists in the two end points is the highest point in the points on the paperboard. As shown in fig. 2, if the paperboard is curved upward, i.e., the paperboard assumes a concave shape, the middle portion of the paperboard is below and the two ends of the paperboard are above. If the two ends of the paper board are at the same height, the two end points of the paper board are the highest points, and if the two ends of the paper board are not at the same height, one highest point exists in the two end points of the paper board. Thus, if the highest point exists in both ends of the sheet, the sheet can be determined to be bent upward.
Further, if shown in fig. 3, the two end points of the sheet in the second direction are point D and point F. When the cardboard is bent downward, the cardboard assumes a convex shape with the middle of the cardboard being located above, and if the two ends of the cardboard are located below, the highest point among the two ends of the cardboard is unlikely to exist, and therefore, in this case, it is determined that the cardboard is bent downward.
Referring to fig. 4, in the present embodiment, the calibration system further includes an adjusting mechanism 500, and the adjusting mechanism 500 is connected to the preheating cylinder 100 and the feedback control apparatus 400, respectively.
In addition, the correction system further includes a sensing apparatus 600, and the sensing apparatus 600 is disposed in the preheating cylinder 100 and connected to the feedback control apparatus 400. The sensing apparatus 600 may be used to monitor the amount of wrap angle of the base paper in the preheating cylinder 100 and transmit the monitored amount of wrap angle to the feedback control apparatus 400.
The feedback control apparatus 400, after receiving the bending direction and the bending data of the sheet sent from the image processing apparatus 300, adjusts the wrap angle amount of the preheating cylinder 100 by the adjustment mechanism 500 according to the bending direction and the bending data.
Optionally, the feedback control apparatus 400 is configured to correspondingly increase the wrap angle amount of the preheating cylinder 100 by the adjusting mechanism 500 according to the bending data when the bending direction of the paper sheet is upward bending.
And when the bending direction of the sheet is a downward bending, the feedback control apparatus 400 may correspondingly decrease the wrap angle amount of the preheating cylinder 100 through the adjusting mechanism 500 according to the bending data.
Through the above processes, an image of the board can be photographed by the image photographing apparatus 200, the bending direction and bending data of the board can be obtained based on the visual processing and the image recognition, and the wrap angle amount of the preheating cylinder 100 can be adjusted by the feedback control apparatus 400. Compared with the existing laser ranging mode, the method does not need to be provided with a plurality of laser ranging instruments, only needs one image shooting device 200, and is simpler in system device. Moreover, the effects of timely feedback and timely control can be realized, and the real-time performance is better.
In addition, referring to fig. 5, an embodiment of the present application further provides a correction method applied to the image processing, where the correction method specifically includes the following steps:
in step S110, the preheating cylinder 100 preheats the base paper conveyed thereto.
In step S120, the image capturing apparatus 200 captures image information of the board preheated by the preheating cylinder 100 and subjected to the bonding and cutting processes, and transmits the image information to the image processing apparatus 300.
In step S130, the image processing apparatus 300 performs analysis processing on the image information to obtain a bending direction and bending data of the paper sheet, and sends the bending direction and bending data to the feedback control apparatus 400.
In step S140, the feedback control device 400 adjusts the wrap angle amount of the preheating cylinder 100 according to the bending direction and the bending data to change the base paper temperature so as to correct the flatness of the obtained paperboard.
Wherein, the step S130 may include the following sub-steps:
the image processing device 300 obtains the highest point and the lowest point of the cardboard in the image information relative to a reference plane in a first direction perpendicular to the reference plane.
And obtaining a first coordinate value of the highest point in the first direction and a second coordinate value of the lowest point in the first direction, and obtaining bending data of the paperboard according to the first coordinate value and the second coordinate value.
And determining the bending direction of the paperboard according to the coordinate information of two end points of the paperboard in a second direction perpendicular to the first direction in the first direction.
In the present embodiment, the image processing apparatus 300 may determine the bending direction of the sheet according to the following procedure:
detecting whether the highest point in the first direction exists in two end points of the paper board in the image information in a second direction perpendicular to the first direction, and if the highest point exists in the two end points, determining that the paper board is bent upwards. And if the highest point does not exist in the two end points, determining that the paperboard is bent downwards.
In the present embodiment, the feedback control apparatus 400 may adjust the wrap angle amount of the preheating cylinder 100 by:
when the bending direction is upward bending, the feedback control apparatus 400 correspondingly increases the wrap angle amount of the preheating cylinder 100 through the adjusting mechanism 500 according to the bending data to change the base paper temperature so as to modify the flatness of the obtained paperboard. Or when the bending direction is downward bending, the feedback control device 400 correspondingly reduces the wrap angle amount of the preheating cylinder 100 through the adjusting mechanism 500 according to the bending data to change the base paper temperature so as to correct the flatness of the obtained paperboard.
In this embodiment, the calibration system further includes a sensing device 600, and the method further includes the following steps:
the sensing apparatus 600 monitors the wrap angle amount of the base paper in the preheating cylinder 100, and transmits the monitored wrap angle amount to the feedback control apparatus 400.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the method described above may refer to the corresponding process in the foregoing system, and will not be described in too much detail herein.
In summary, according to the correction system and the correction method based on image processing provided by the embodiment of the present application, the preheating cylinder 100 preheats the base paper conveyed thereto, and the image shooting device 200 is used to shoot the image information of the paperboard obtained after preheating, bonding and cutting. The obtained image information is subjected to analysis processing by the image processing apparatus 300 to obtain the bending direction and bending data of the sheet, and the bending direction and bending data are sent to the feedback control apparatus 400. Finally, the feedback control apparatus 400 adjusts the wrap angle amount of the preheating cylinder 100 according to the bending direction and the bending data of the board to change the base paper temperature to correct the flatness of the resulting board. According to the correction mode, the bending direction and the bending data of the paperboard are obtained by shooting the image and analyzing the image, and the flatness of the subsequent paperboard is improved by utilizing the feedback control equipment 400 to perform real-time and automatic adjustment, so that the cost is lower, the realization is more convenient, the delay is lower, and the feedback is more timely.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. 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.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. A correction system based on image processing is characterized in that the system comprises an image shooting device, an image processing device, a feedback control device and a preheating cylinder, wherein the image processing device is respectively connected with the image shooting device and the feedback control device, and the feedback control device is also connected with the preheating cylinder;
the preheating cylinder is used for preheating the conveyed base paper;
the image shooting equipment is used for shooting the image information of the paperboard which is preheated by the preheating cylinder and is obtained through the bonding and cutting processes, and sending the image information to the image processing equipment;
the image processing equipment is used for analyzing and processing the image information to obtain the bending direction and the bending data of the paperboard and sending the bending direction and the bending data to the feedback control equipment;
the feedback control equipment is used for adjusting the wrap angle amount of the preheating cylinder according to the bending direction and the bending data so as to change the temperature of the base paper and correct the flatness of the obtained paperboard;
wherein the image processing apparatus obtains the bending data of the sheet by:
the image processing device is used for obtaining the highest point and the lowest point of the paper board in the image information relative to a reference plane in a first direction perpendicular to the reference plane;
and obtaining a first coordinate value of the highest point in the first direction and a second coordinate value of the lowest point in the first direction, and obtaining bending data of the paperboard according to the first coordinate value and the second coordinate value.
2. The image-processing-based correction system according to claim 1, wherein the image processing apparatus obtains the bending direction of the sheet by:
detecting whether the highest point exists in two end points of the paper board in the image information in a second direction perpendicular to the first direction;
if the highest point exists in the two end points, determining that the paperboard is bent upwards;
and if the highest point does not exist in the two end points, determining that the paperboard is bent downwards.
3. The image-processing-based correction system of claim 2, further comprising adjustment mechanisms connected to the pre-heating cylinder and the feedback control device, respectively;
the feedback control equipment is used for correspondingly increasing the wrap angle amount of the preheating cylinder through the adjusting mechanism according to the bending data when the bending direction is upward bending; or
And the feedback control equipment is used for correspondingly reducing the wrap angle amount of the preheating cylinder through the adjusting mechanism according to the bending data when the bending direction is downward bending.
4. The image-processing-based correction system of claim 1, further comprising a sensing device disposed in the preheating cylinder and connected to the feedback control device for monitoring the wrap angle amount of the base paper in the preheating cylinder and sending the monitored wrap angle amount to the feedback control device.
5. An image processing-based correction method applied to an image processing-based correction system including an image capturing apparatus, an image processing apparatus, a feedback control apparatus, and a warm-up cylinder, the method comprising:
the preheating cylinder preheats the conveyed base paper;
the image shooting equipment shoots image information of the paperboard which is preheated by the preheating cylinder and subjected to the bonding and cutting processes, and sends the image information to the image processing equipment;
the image processing equipment analyzes and processes the image information to obtain the bending direction and the bending data of the paperboard and sends the bending direction and the bending data to the feedback control equipment;
the feedback control equipment adjusts the wrap angle amount of the preheating cylinder according to the bending direction and the bending data so as to change the temperature of the base paper and correct the flatness of the obtained paperboard;
the image processing device analyzes and processes the image information to obtain the bending direction and the bending data of the paper board, and comprises the following steps:
the image processing device obtains the highest point and the lowest point of the paper board in the image information relative to a reference plane in a first direction perpendicular to the reference plane;
obtaining a first coordinate value of the highest point in the first direction and a second coordinate value of the lowest point in the first direction, and obtaining bending data of the paperboard according to the first coordinate value and the second coordinate value;
and determining the bending direction of the paperboard according to the coordinate information of two end points of the paperboard in a second direction perpendicular to the first direction in the first direction.
6. The image-processing-based correction method according to claim 5, wherein the step of determining the bending direction of the sheet from coordinate information in the first direction of both end points of the sheet in a second direction perpendicular to the first direction further comprises:
detecting whether the highest point in a first direction exists in two end points of the paper board in the image information in a second direction perpendicular to the first direction;
if the highest point exists in the two end points, determining that the paperboard is bent upwards;
and if the highest point does not exist in the two end points, determining that the paperboard is bent downwards.
7. The image-processing-based correction method according to claim 6, wherein the correction system further comprises an adjustment mechanism, and the step of adjusting the wrap angle amount of the preheating cylinder by the feedback control device according to the bending direction and the bending data to change the base paper temperature to correct the flatness of the obtained paper board comprises:
when the bending direction is upward bending, the feedback control equipment correspondingly increases the wrap angle amount of the preheating cylinder through the adjusting mechanism according to the bending data so as to change the temperature of the base paper and modify the flatness of the obtained paperboard; or
And when the bending direction is downward bending, the feedback control equipment correspondingly reduces the wrap angle amount of the preheating cylinder through the adjusting mechanism according to the bending data so as to change the temperature of the base paper and correct the flatness of the obtained paperboard.
8. The image-processing-based correction method of claim 5, wherein the system further comprises a sensing device, the method further comprising:
the sensing equipment monitors the wrap angle amount of the base paper in the preheating cylinder and sends the monitored wrap angle amount to the feedback control equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811557685.4A CN109624414B (en) | 2018-12-19 | 2018-12-19 | Correction system and correction method based on image processing |
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| CN201811557685.4A CN109624414B (en) | 2018-12-19 | 2018-12-19 | Correction system and correction method based on image processing |
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