CN111389766A - Handheld article appearance detection method and device - Google Patents
Handheld article appearance detection method and device Download PDFInfo
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- CN111389766A CN111389766A CN202010321854.5A CN202010321854A CN111389766A CN 111389766 A CN111389766 A CN 111389766A CN 202010321854 A CN202010321854 A CN 202010321854A CN 111389766 A CN111389766 A CN 111389766A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
- B07C5/3422—Sorting according to other particular properties according to optical properties, e.g. colour using video scanning devices, e.g. TV-cameras
Abstract
The invention discloses a handheld article appearance detection method, which comprises the following steps: step one, inputting a standard image into a comparison library; step two, taking images of the article by holding the image taking device in hand, and identifying the images after image taking; and step three, comparing the image after image taking with a standard image, judging the image to be qualified when the similarity is greater than the percentage of a set threshold value, and judging the image to be unqualified when the similarity is less than the percentage of the set threshold value. Has the advantages that: the handheld structure is adopted to replace the existing customized fixing structure, so that the operation is convenient and fast, the operation is easy, and the cost is lower; can carry out the outward appearance detection of specific position or non-specific position to the article of not unidimensional through handheld device, detect the simple operation, and the rate of accuracy is high.
Description
Technical Field
The invention relates to the technical field of assembly line detection, in particular to a handheld article appearance detection device.
Background
At present, special visual inspection or customized equipment is mostly adopted when appearance inspection is carried out on a production line, the error rate of visual inspection is high, and the pertinence and the universality of the customized equipment are poor. Meanwhile, the similar articles on the market at present cannot realize appearance detection of articles with larger volumes by using a single lens, and if the similar articles are applied to large-scale article detection, multiple lenses are needed, so that the equipment is excessively large in size and expensive. The high cost cannot be borne by medium and small enterprises, the existing objects are difficult to upgrade, and special maintenance is needed in the later period. And the article detector is complex to operate and can be operated by a special training party. Therefore, the applicant has proposed a handheld appearance inspection device having excellent versatility.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a hand-held object appearance inspection device, and a preferable embodiment of the present invention includes: the detection device is convenient to use and carry out appearance detection on specific and non-specific positions of articles with different sizes, has high detection accuracy and other technical effects, and is explained in detail below.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a handheld article appearance detection method, which comprises the following steps:
step one, inputting a standard image into a comparison library;
step two, taking images of the article by holding the image taking device in hand, and identifying the images after image taking;
and step three, comparing the image after image taking with a standard image, judging the image to be qualified when the similarity is greater than the percentage of a set threshold value, and judging the image to be unqualified when the similarity is less than the percentage of the set threshold value.
The input standard image is obtained by photographing the appearance of the object through the image capturing device.
Wherein, the method also comprises a method for establishing a standard image, which comprises the steps of opening the image capturing device to capture images of each judgment surface of the appearance of the article,
step two, identifying the information of the space between the size, the proportion, the lines, the figures, the characters and the characters in the image, marking the information as characteristic data,
and step three, storing the graphic data and the characteristic data into a database to form a standard image.
And in the second step, conveying the articles through the conveying belt, entering a detection station, marking unqualified articles after detection is finished, and then rejecting the marked articles.
The method further comprises the step of adjusting a camera of the image capturing device to enable the image capturing range of the camera to be consistent with the angle of the product.
A handheld article appearance detection device comprises an outer frame of a rectangular frame structure, wherein a handheld portion is arranged at the bottom of the outer frame, an image acquisition portion is arranged on the inner side of the outer frame, a sliding frame for bearing the image acquisition portion is arranged on the inner side of the outer frame, the sliding frame is in sliding fit with the outer frame and can slide along the inner side of the outer frame in the horizontal direction, and a positioning structure matched with the sliding frame for positioning is arranged on the outer frame;
the image acquisition part is connected with the control host through a connecting wire.
Preferably, the positioning structure comprises two positioning frames and two positioning knobs, the two positioning frames and the two positioning knobs are respectively arranged on two symmetrical sides of the outer frame, and the positioning knobs penetrate through the positioning frames and then are in threaded fit with the sliding frame; and hole sites matched with the positioning knobs are formed on the positioning frames.
Preferably, two ends of the positioning frame are fixedly connected with the outer frame respectively, a sliding groove matched with the positioning knob is formed in the middle of the positioning frame along the length direction, and the positioning knob penetrates through the sliding groove and then is in threaded fit with the sliding frame.
Preferably, the positioning knob comprises a threaded portion and a knob cover, the threaded portion penetrates through the sliding groove and then is in threaded fit with the sliding frame, and the diameter of the knob cover is larger than the width of the sliding groove.
Preferably, the sliding frame consists of two side frames which are symmetrically arranged and a bearing plate which is arranged between the two side frames; the side frame comprises a vertical frame which is vertically arranged, an upper sliding plate which is arranged at the upper end of the vertical frame and a lower sliding plate which is arranged at the lower end of the vertical frame, and the upper sliding plate and the lower sliding plate are both horizontally arranged; the bearing plate is horizontally arranged, and two ends of the bearing plate are fixedly connected with the vertical frame respectively; and a threaded hole matched with the positioning knob is formed in the vertical frame.
Preferably, a wire arranging frame is arranged on the outer frame, a wire arranging pipe is arranged on the wire arranging frame, and the connecting wire penetrates through the wire arranging pipe.
Preferably, the outer frame is made of transparent acrylic materials.
The connecting wire is provided with a USB interface which is in communication connection with the control computer.
In conclusion, the beneficial effects of the invention are as follows: 1. the handheld structure is adopted to replace the existing customized fixing structure, so that the operation is convenient and fast, the operation is easy, and the cost is lower;
2. can carry out the outward appearance detection of specific position or non-specific position to the article of not unidimensional through handheld device, detect the simple operation, and the rate of accuracy is high.
3. The detection device communicates with the control computer through the USB interface, is plug and play, supports various control computers of a production line, and is very convenient to use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is a schematic left side view of the structure of FIG. 1;
FIG. 4 is a schematic top view of the outer frame of the present invention;
fig. 5 is a front view of the carriage of the present invention;
fig. 6 is a front view of the positioning knob of the present invention.
The reference numerals are explained below:
1. an outer frame; 2. an image acquisition unit; 3. positioning a knob; 31. a knob cover; 32. a threaded portion; 4. a hand-held portion; 5. a positioning frame; 6. a connecting wire; 7. a carriage; 71. a lower slide plate; 72. a threaded hole; 73. erecting; 74. an upper slide plate; 75. a carrier plate; 8. a chassis.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The embodiment 1 and the invention provide a handheld article appearance detection method, which comprises the following steps:
step one, inputting a standard image into a comparison library;
step two, taking images of the article by holding the image taking device in hand, and identifying the images after image taking;
and step three, comparing the image after image taking with a standard image, judging the image to be qualified when the similarity is greater than the percentage of a set threshold value, and judging the image to be unqualified when the similarity is less than the percentage of the set threshold value.
The input standard image is obtained by photographing the appearance of the object through the image capturing device.
Wherein, the method also comprises a method for establishing a standard image, which comprises the steps of opening the image capturing device to capture images of each judgment surface of the appearance of the article,
step two, identifying the information of the space between the size, the proportion, the lines, the figures, the characters and the characters in the image, marking the information as characteristic data,
and step three, storing the graphic data and the characteristic data into a database to form a standard image.
And in the second step, conveying the articles through the conveying belt, entering a detection station, marking unqualified articles after detection is finished, and then rejecting the marked articles.
The method further comprises the step of adjusting a camera of the image capturing device to enable the image capturing range of the camera to be consistent with the angle of the product.
The image matching algorithm of the core obtains matching similarity by using a function in Open CV3, and the development period is greatly shortened by adopting the existing algorithm. The system can support the generation of a standard image library, has low requirement on ambient light, and only needs to regenerate the standard image library after the environment changes. Meanwhile, when one product needs to finish a plurality of detection targets, the system can detect the detection targets one by one according to a set sequence, and omission is prevented. The handheld device is convenient for a user to quickly switch to other planes for appearance detection after finishing one plane detection. The default of the judgment standard threshold value of the similarity is 90%, and a user can flexibly modify the judgment threshold value according to the actual appearance detection requirement of the product.
The detector is used for detecting the appearance of a general factory product, particularly for detecting the printing, color, pattern, screw, adhesive tape and other simple repeatability of the product appearance, and has the characteristics of universality and simple maintenance.
The product has wide application range, can detect the appearance of a large product and detect the appearance, product labels and printing of common types of small products. The product is a handheld product, the operation is simple and convenient, and the operation interface is simple and easy to operate. And the detection accuracy is high.
And the system software prompts a standard chart during normal detection, and a tester aligns the detector at a corresponding position to be detected, if the similarity reaches a set threshold value. The interface can pop up the matching similarity and the judgment result, and simultaneously send out the prompt tones of 'qualified' or 'unqualified', and the like, when one product needs to be detected at multiple positions, the system can automatically jump out of the next standard graph required to be detected, and the prompt tones 'complete' can be generated after the completion of the detection. The detection of one product is finished.
Example 2
Referring to fig. 1 to 6, a handheld article appearance inspection device includes an outer frame 1 having a rectangular frame structure, a handheld portion 4 is disposed at the bottom of the outer frame 1, an image collecting portion 2 is disposed at the inner side of the outer frame 1, a carriage 7 for carrying the image collecting portion 2 is disposed at the inner side of the outer frame 1, the carriage 7 is in sliding fit with the outer frame 1 and can slide along the inner side of the outer frame 1 in the horizontal direction, a positioning structure for positioning the carriage 7 is disposed on the outer frame 1, a bottom frame 8 is disposed at the bottom of the outer frame 1, the bottom frame 8 is fixedly bonded to the bottom of the outer frame 1, and the handheld portion 4 is fixed to; the image acquisition part 2 is connected with the control host through the connecting wire 6, and after being connected with the control host through the connecting wire 6, the handheld part 4 is held by a hand, so that the image acquisition part 2 is aligned with the detection position of the appearance of the article, and the image information of the corresponding position can be acquired, can be displayed on the control host after being transmitted through the connecting wire 6 and is compared with the standard image information, thereby judging whether the article is intact.
As an optional implementation mode, the positioning structure comprises a positioning frame 5 and two positioning knobs 3, the positioning frame 5 and the two positioning knobs 3 are respectively arranged on two symmetrical sides of the outer frame 1, and the positioning knobs 3 penetrate through the positioning frame 5 and then are in threaded fit with the sliding frames 7; a hole site matched with the positioning knob 3 is formed on the positioning frame 5; two ends of a positioning frame 5 are respectively bonded and fixed on the outer frame 1, a sliding groove matched with the positioning knob 3 is formed in the middle of the positioning frame 5 along the length direction, and the positioning knob 3 penetrates through the sliding groove and then is in threaded fit with the sliding frame 7; the positioning knob 3 comprises a thread part 32 and a knob cover 31, the thread part 32 penetrates through the sliding groove and then is in thread fit with the sliding frame 7, and the diameter of the knob cover 31 is larger than the width of the sliding groove; the thread part 32 penetrates through the sliding groove and then is matched with the thread hole 72 on the vertical frame 73, the vertical frame 73 and the knob cover 31 are respectively arranged at two sides of the positioning frame 5, in the process of screwing the thread part 32, the knob cover 31 is tightly attached to the surface of the positioning frame 5, so that the vertical frame 73 is positioned, the whole sliding frame 7 and the whole image acquisition part 2 are fixed in position, and the position of the image acquisition part 2 is adjusted in such a way, so that the appearance image acquisition operation can be conveniently carried out on objects with different sizes.
The carriage 7 is composed of two side frames symmetrically arranged and a bearing plate 75 arranged between the two side frames; the side frame comprises a vertical frame 73 which is vertically arranged, an upper sliding plate 74 which is arranged at the upper end of the vertical frame 73 and a lower sliding plate 71 which is arranged at the lower end of the vertical frame 73, wherein the upper sliding plate 74 and the lower sliding plate 71 are both horizontally arranged; the bearing plate 75 is horizontally arranged and two ends of the bearing plate are fixedly connected with the vertical frame 73 respectively; a threaded hole 72 matched with the positioning knob 3 is formed on the vertical frame 73; a slide rail which is matched with the upper slide plate 74 and the lower slide plate 71 to slide is formed on the inner side of the outer frame 1;
the outer frame 1 is provided with a wire arranging frame which is provided with a wire arranging pipe, and the connecting wire 6 penetrates through the wire arranging pipe; the wire arranging frame is arranged at the tail part of the outer frame 1, the image acquisition part 2 faces the head part of the outer frame 1, and after the connecting wire 6 penetrates through the wire arranging tube, the connecting wire 6 can be prevented from swinging inside the outer frame 1, so that the position of the image acquisition part 2 can be conveniently adjusted;
the outer frame 1 is made of transparent acrylic materials, the outer frame 1 made of the transparent acrylic materials can reduce shielding of light, so that a light source does not need to be additionally arranged, and the sliding frame 7, the positioning frame 5 and the bottom frame 8 are made of the transparent acrylic materials.
The handheld structure is adopted to replace the existing customized fixing structure, so that the operation is convenient and fast, the operation is easy, and the cost is lower; can carry out the outward appearance detection of specific position or non-specific position to the article of not unidimensional through handheld device, detect the simple operation, and the rate of accuracy is high.
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 (10)
1. A method for detecting the appearance of a handheld article is characterized by comprising the following steps: the method comprises the following steps:
step one, inputting a standard image into a comparison library;
step two, taking images of the article by holding the image taking device in hand, and identifying the images after image taking;
and step three, comparing the image after image taking with a standard image, judging the image to be qualified when the similarity is greater than the percentage of a set threshold value, and judging the image to be unqualified when the similarity is less than the percentage of the set threshold value.
2. The method of claim 1, wherein the method comprises: the input standard image is obtained by photographing the appearance of the object through the image capturing device.
3. The method of claim 2, wherein the method comprises:
the method also comprises a method for establishing the standard image, which comprises the steps of opening the image capturing device to capture images of each judgment surface of the appearance of the article,
step two, identifying the information of the space between the size, the proportion, the lines, the figures, the characters and the characters in the image, marking the information as characteristic data,
and step three, storing the graphic data and the characteristic data into a database to form a standard image.
4. The method of claim 1, wherein the method comprises: and in the second step, conveying the articles through a conveying belt, entering a detection station, marking unqualified articles after detection is finished, and then rejecting the marked articles.
5. The method of claim 1, wherein the method comprises:
and adjusting a camera of the image capturing device to enable the image capturing range of the image capturing device to be consistent with the angle of the product.
6. An apparatus using the method for detecting the appearance of a handheld article according to any one of claims 1 to 5, characterized in that the apparatus includes an outer frame (1) having a rectangular frame structure, a handheld portion (4) is disposed at the bottom of the outer frame (1), an image acquisition portion (2) is disposed inside the outer frame (1), a carriage (7) for carrying the image acquisition portion (2) is disposed inside the outer frame (1), the carriage (7) is in sliding fit with the outer frame (1) and can slide horizontally along the inside of the outer frame (1), and a positioning structure for positioning the carriage (7) is disposed on the outer frame (1);
the image acquisition part (2) is connected with the control host through a connecting wire (6).
7. The hand-held article appearance inspection device of claim 5, wherein: the positioning structure comprises two positioning frames (5) and two positioning knobs (3), the two positioning frames (5) and the two positioning knobs (3) are respectively arranged on two symmetrical sides of the outer frame (1), and the positioning knobs (3) penetrate through the positioning frames (5) and then are in threaded fit with the sliding frames (7); and hole sites matched with the positioning knobs (3) are formed on the positioning frames (5).
8. The hand-held article appearance inspection device of claim 6, wherein: locating rack (5) both ends respectively in outer frame (1) fixed connection, just there is the cooperation locating rack (5) middle part along the length direction shaping the spout of location knob (3), location knob (3) run through behind the spout with balladeur train (7) screw-thread fit.
9. The hand-held article appearance inspection device of claim 7, wherein: the positioning knob (3) comprises a threaded portion (32) and a knob cover (31), the threaded portion (32) penetrates through the sliding groove and then is in threaded fit with the sliding frame (7), and the diameter of the knob cover (31) is larger than the width of the sliding groove.
10. The hand-held article appearance inspection device of claim 8, wherein: the sliding frame (7) consists of two side frames which are symmetrically arranged and a bearing plate (75) which is arranged between the two side frames; the side frame comprises a vertical frame (73) which is vertically arranged, an upper sliding plate (74) which is arranged at the upper end of the vertical frame (73) and a lower sliding plate (71) which is arranged at the lower end of the vertical frame (73), and the upper sliding plate (74) and the lower sliding plate (71) are both horizontally arranged; the bearing plate (75) is horizontally arranged, and two ends of the bearing plate are fixedly connected with the vertical frame (73) respectively; and a threaded hole (72) matched with the positioning knob (3) is formed in the vertical frame (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010321854.5A CN111389766A (en) | 2020-04-22 | 2020-04-22 | Handheld article appearance detection method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010321854.5A CN111389766A (en) | 2020-04-22 | 2020-04-22 | Handheld article appearance detection method and device |
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| CN111389766A true CN111389766A (en) | 2020-07-10 |
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| CN202010321854.5A Pending CN111389766A (en) | 2020-04-22 | 2020-04-22 | Handheld article appearance detection method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112969021A (en) * | 2020-10-30 | 2021-06-15 | 泰州镭昇光电科技有限公司 | Relay control platform and method using content search |
| CN113406125A (en) * | 2021-05-08 | 2021-09-17 | 瑞浦能源有限公司 | Ultrasonic welding inspection process method and system |
-
2020
- 2020-04-22 CN CN202010321854.5A patent/CN111389766A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112969021A (en) * | 2020-10-30 | 2021-06-15 | 泰州镭昇光电科技有限公司 | Relay control platform and method using content search |
| CN112969021B (en) * | 2020-10-30 | 2022-03-15 | 上海称意包装设备有限公司 | Relay control platform and method using content search |
| CN113406125A (en) * | 2021-05-08 | 2021-09-17 | 瑞浦能源有限公司 | Ultrasonic welding inspection process method and system |
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