CN111703656A - Method for correcting orientation of circulating smoke box skin - Google Patents
Method for correcting orientation of circulating smoke box skin Download PDFInfo
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- CN111703656A CN111703656A CN202010426315.8A CN202010426315A CN111703656A CN 111703656 A CN111703656 A CN 111703656A CN 202010426315 A CN202010426315 A CN 202010426315A CN 111703656 A CN111703656 A CN 111703656A
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- key point
- matched
- key
- box skin
- detected
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B57/00—Automatic control, checking, warning, or safety devices
- B65B57/02—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of binding or wrapping material, containers, or packages
- B65B57/04—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of binding or wrapping material, containers, or packages and operating to control, or to stop, the feed of such material, containers, or packages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
- B65G47/24—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
- B65G47/24—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles
- B65G47/256—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles removing incorrectly orientated articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
- B65G2201/0235—Containers
- B65G2201/0258—Trays, totes or bins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/04—Detection means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Image Processing (AREA)
- Image Analysis (AREA)
Abstract
The invention discloses a method for correcting the orientation of a circulating smoke box skin, which comprises the steps of setting a standard image according to the brand of a box skin to be detected; acquiring a plurality of first key points on a standard image; acquiring a detected image of a current box skin to be detected; acquiring a plurality of second key points on the detected image; performing homography matching on the first key points and the second key points; judging whether the number of key point pairs formed after the first key point is matched with the second key point is larger than a first preset value or not; if yes, determining the coordinates of the matched first key point and the second key point; and obtaining the rotation correction angle of the current suitcase skin according to the coordinates of the matched first key point and the second key point. According to the method for correcting the orientation of the circulating smoke box skin, the orientation of the box skin is automatically recognized and corrected without manual participation, labor force is saved, and correction accuracy is improved.
Description
Technical Field
The invention relates to the technical field of tobacco, in particular to a method for correcting the orientation of a circulating smoke box skin.
Background
In the tobacco field, the use of circulating smoke boxes is being widely popularized. However, the circulating smoke box has the following difficulties in the use process: the positive and negative or each side orientation of circulation smoke box case skin is inconsistent, mix the case skin of other trade marks even in a kind of case skin, and the automatic case sealer of cigarette strip can only use the stationary plane, the case skin of fixed orientation, the positive and negative of case skin, the orientation difference can cause the automatic case sealer of cigarette strip to block, shut down, and mix in the case skin other trade marks and can cause serious quality defect accident, consequently, must check one by one circulation smoke box case skin through the manual work among the prior art, arrange in order, a large amount of labours have been wasted, and there is the phenomenon of looking over.
Disclosure of Invention
The invention aims to provide a method for correcting the orientation of a circulating smoke box skin, which aims to solve the problems in the prior art and realize accurate identification and adjustment of the orientation of the smoke box skin.
The invention provides a method for correcting the orientation of a circulating smoke box skin, which comprises the following steps:
setting a standard image according to the brand of the box skin to be detected;
acquiring a plurality of first key points on the standard image;
acquiring a detected image of a current box skin to be detected;
acquiring a plurality of second key points on the detected image;
performing homography matching on the first key point and the second key point;
judging whether the number of key point pairs formed after the first key points are matched with the second key points is larger than a first preset value or not;
if yes, determining the coordinates of the matched first key point and the second key point;
and obtaining the rotation correction angle of the current box skin according to the coordinates of the matched first key point and the matched second key point.
The method for correcting the orientation of the trunk skin of the circulating smoke box as described above, wherein preferably, if the result of determining whether the number of the key point pairs formed after the first key point is matched with the second key point is greater than a first preset value is negative, the method further includes:
judging whether the number of key point pairs formed after the first key points are matched with the second key points is larger than a second preset value and smaller than or equal to the first preset value;
and if so, rejecting the current box skin to be detected.
In the method for correcting the orientation of the trunk skin of the circulating smoke box, preferably, if the number of the key point pairs formed after the first key point is matched with the second key point is less than the second preset value, the detected image of the current trunk skin to be detected is obtained again.
The method for correcting the orientation of the circulating smoke box skin as described above, wherein preferably, the obtaining of the rotation correction angle of the current box skin according to the coordinates of the matched first key point and second key point specifically includes:
acquiring the mass center of the matched first key point coordinate and second key point coordinate;
translating the matched first key point coordinate and second key point coordinate by taking a mass center as an origin;
respectively calculating included angles of connecting lines of the matched first key point coordinate and the matched second key point coordinate with the origin relative to coordinate axes;
respectively calculating the average value of the quartiles of the two groups of included angles;
and calculating to obtain the difference value of the two average values, namely the rotation correction angle.
The method for correcting the orientation of the circulating smoke box skin, wherein preferably, the first key points comprise first front key points and first back key points, and the second key points comprise second front key points and second back key points;
the performing homography matching on the first key point and the second key point specifically includes:
performing homography matching on the first front key points and the second front key points, or performing homography matching on the first back key points and the second back key points;
if the number of key point pairs formed after the first front key points are matched with the second front key points is larger than a first preset value, determining that the detection surface of the current box skin to be detected is the front surface;
and if the number of the key point pairs formed after the first back key points are matched with the second back key points is larger than a first preset value, determining that the detection surface of the current box skin to be detected is the back surface.
The method for correcting the orientation of the circulation smoke box skin as described above, wherein preferably, the first key point and the second key point are obtained by a SIFT algorithm.
According to the method for correcting the orientation of the circulating smoke box skin, the orientation of the box skin is automatically recognized and corrected without manual participation, labor force is saved, and correction accuracy is improved.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a flowchart of a method for correcting the orientation of a circulating smoke box skin according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
As used in this disclosure, "first", "second": and the like, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "left", "right", etc. are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also change accordingly.
In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be intervening components between the specific component and the first component or the second component. When it is described that a specific component is connected to other components, the specific component may be directly connected to the other components without having an intervening component, or may be directly connected to the other components without having an intervening component.
All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
As shown in fig. 1, an embodiment of the present invention provides a method for correcting orientation of a recycling cigarette box skin, which includes the following steps:
and step S1, setting a standard image according to the brand of the box leather to be detected.
Wherein, the standard image is a qualified trunk skin image.
And step S2, acquiring a plurality of first key points on the standard image. The first keypoint may be obtained by a SIFT algorithm.
And step S3, acquiring a detected image of the current box skin to be detected.
And step S4, acquiring a plurality of second key points on the detected image. The second key point may be obtained by a SIFT algorithm.
And step S5, performing homography matching on the first key points and the second key points.
Step S6, judging whether the number of key point pairs formed after the first key point is matched with the second key point is larger than a first preset value; if so, the process proceeds to step S7.
In this embodiment, the first preset value may be 100, that is, when the number of key point pairs is greater than 100, the step S7 is performed. Wherein, partial key point pairs with smaller Hamming distance can be screened out as judged data.
And step S7, determining the coordinates of the matched first key point and the second key point.
And step S8, obtaining the rotation correction angle of the current suitcase skin according to the coordinates of the matched first key point and the second key point.
Therefore, compared with the prior art, the method for correcting the orientation of the circulating smoke box skin provided by the embodiment realizes automatic identification and correction of the orientation of the box skin under the condition of no need of manual participation, saves labor force and improves correction accuracy.
Further, if the result of step S6 is no, the method further includes:
step S61, judging whether the number of the key point pairs formed after the first key point is matched with the second key point is larger than a second preset value and smaller than or equal to a first preset value; if so, the process proceeds to step S62.
Wherein, the second preset value can be 10. When the number of the key point pairs formed after the first key point is matched with the second key point is 10-100, the situation that the measured image of the current box skin is not matched with the standard image is shown, namely, the brand of the box skin in the current detection is not matched with the brand of the box skin of the standard image, and the box skin of the unmatched brand can be removed at the moment, so that serious quality defect accidents caused by mixing other brands in the box skin are avoided.
And step S62, removing the current box skin to be detected.
Further, if the number of the key point pairs formed after the first key point is matched with the second key point is smaller than a second preset value, the detected image of the current box skin to be detected is obtained again.
In this embodiment, if the number of the key point pairs formed after the first key point is matched with the second key point is less than 10, it is indicated that the complete image of the box skin is not obtained, and at this time, the image of the box skin needs to be obtained again.
Further, step S8 specifically includes:
and step S81, acquiring the centroids of the matched first key point coordinates and second key point coordinates.
And step S82, translating the matched first key point coordinate and second key point coordinate by taking the center of mass as an origin.
And step S83, respectively calculating the included angles of the connecting lines of the matched first key point coordinate and second key point coordinate with the origin relative to the coordinate axis.
And step S84, calculating the average value of the quartiles of the two groups of included angles respectively.
And step S85, calculating to obtain the difference value of the two average values, namely the rotation correction angle.
It should be noted that the first keypoints include first obverse keypoints and first reverse keypoints, and the second keypoints include second obverse keypoints and second reverse keypoints.
Specifically, step S5 specifically includes:
and step S51, performing homography matching on the first front-side key points and the second front-side key points, or performing homography matching on the first back-side key points and the second back-side key points.
And step S52, if the number of the key point pairs formed after the first front key point is matched with the second front key point is larger than a first preset value, determining that the detection surface of the current box skin to be detected is the front surface.
And step S53, if the number of the key point pairs formed after the first back key points are matched with the second back key points is larger than a first preset value, determining that the detection surface of the current box skin to be detected is the back surface.
If the detection surface of the current box skin to be detected is determined to be the front surface, the box skin is enabled to continuously flow backwards; and if the detection surface of the current box skin to be detected is determined to be the reverse surface, the box skin is removed to avoid mixing into the box skins which are all the front surfaces, and meanwhile, the box skin is convenient to turn over and adjust on line and then put into use again.
The front surface and the back surface are two opposite surfaces on the box skin respectively, and the specific front surface and the specific back surface can be determined according to actual conditions.
According to the method for correcting the orientation of the circulating smoke box skin, provided by the embodiment of the invention, the automatic identification and correction of the orientation of the box skin are realized without manual participation, the labor force is saved, and the correction accuracy is improved.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (6)
1. A method for correcting the orientation of a circulating smoke box skin is characterized by comprising the following steps:
setting a standard image according to the brand of the box skin to be detected;
acquiring a plurality of first key points on the standard image;
acquiring a detected image of a current box skin to be detected;
acquiring a plurality of second key points on the detected image;
performing homography matching on the first key point and the second key point;
judging whether the number of key point pairs formed after the first key points are matched with the second key points is larger than a first preset value or not;
if yes, determining the coordinates of the matched first key point and the second key point;
and obtaining the rotation correction angle of the current box skin according to the coordinates of the matched first key point and the matched second key point.
2. The method of claim 1, wherein if the determination of whether the number of key point pairs formed after the matching of the first key point and the second key point is greater than a first predetermined value is negative, the method further comprises:
judging whether the number of key point pairs formed after the first key points are matched with the second key points is larger than a second preset value and smaller than or equal to the first preset value;
and if so, rejecting the current box skin to be detected.
3. The method for correcting the orientation of the circulating smoke box skin according to claim 2, wherein if the number of key point pairs formed after the first key point is matched with the second key point is less than the second preset value, the detected image of the current box skin to be detected is obtained again.
4. The method for correcting the orientation of the circulating smoke box according to claim 1, wherein the obtaining the rotation correction angle of the current box according to the coordinates of the matched first key point and the matched second key point specifically comprises:
acquiring the mass center of the matched first key point coordinate and second key point coordinate;
translating the matched first key point coordinate and second key point coordinate by taking a mass center as an origin;
respectively calculating included angles of connecting lines of the matched first key point coordinate and the matched second key point coordinate with the origin relative to coordinate axes;
respectively calculating the average value of the quartiles of the two groups of included angles;
and calculating to obtain the difference value of the two average values, namely the rotation correction angle.
5. The method of correcting for loop smoke box skin orientation of claim 1, wherein the first keypoints comprise first frontal keypoints and first reverse keypoints, and the second keypoints comprise second frontal keypoints and second reverse keypoints;
the performing homography matching on the first key point and the second key point specifically includes:
performing homography matching on the first front key points and the second front key points, or performing homography matching on the first back key points and the second back key points;
if the number of key point pairs formed after the first front key points are matched with the second front key points is larger than a first preset value, determining that the detection surface of the current box skin to be detected is the front surface;
and if the number of the key point pairs formed after the first back key points are matched with the second back key points is larger than a first preset value, determining that the detection surface of the current box skin to be detected is the back surface.
6. The method of claim 1, wherein the first keypoint and the second keypoint are obtained by a SIFT algorithm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010426315.8A CN111703656A (en) | 2020-05-19 | 2020-05-19 | Method for correcting orientation of circulating smoke box skin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010426315.8A CN111703656A (en) | 2020-05-19 | 2020-05-19 | Method for correcting orientation of circulating smoke box skin |
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| CN111703656A true CN111703656A (en) | 2020-09-25 |
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| CN202010426315.8A Pending CN111703656A (en) | 2020-05-19 | 2020-05-19 | Method for correcting orientation of circulating smoke box skin |
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Application publication date: 20200925 |