CN100488645C - Automatic classifying method and apparatus for egg specification - Google Patents
Automatic classifying method and apparatus for egg specification Download PDFInfo
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- CN100488645C CN100488645C CNB031185479A CN03118547A CN100488645C CN 100488645 C CN100488645 C CN 100488645C CN B031185479 A CNB031185479 A CN B031185479A CN 03118547 A CN03118547 A CN 03118547A CN 100488645 C CN100488645 C CN 100488645C
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Abstract
A method for automatically classifying egg products includes such steps as automatically taking 3 cross-section images of an eggin different directions, calculating their average area, the ratio of long axis to short axis and the slope of pixel profile, comparing them with references, and classifying according to compared result. Its equipment is composed of conveying belt, sensor, camera head, parallel light source, non-contact induction switch and computer with image acquisition board.
Description
Technical field
The present invention relates to a kind of egg product processing enterprise production operation the process method and the equipment thereof of sorting egg product specification automatically, method for separating that especially utilizes image to handle of being used for.
Background technology
Since late 1970s, China various places are set up large quantities of big-and-middle-sized egg product processing enterprise in succession, and the product of its production is the bright egg of listing, lime-preserved egg, salt egg etc.Must classify to the specification of egg product in its production operation process, reject those excessive, too small and special-shaped bright eggs, enter next process again, for large-scale egg product processing enterprise, day output need be handled more than 10 ten thousand eggs.At present domestic egg product processing enterprise is all by manually weighing, means such as eyesight judgement are carried out sorting, press more than 10 ten thousand eggs of day output, need employ more than 10 workman, need great amount of manpower like this, and the efficient of sorting is low, labour intensity is big, fatiguability also has subjectivity, makes the sorting quality instability.In addition, the great amount of manpower input has also improved production cost.
Summary of the invention
The purpose of this invention is to provide a kind of method and equipment thereof that is used for automatic sorting egg product specification, it can be used egg product horizontal cross-section image calculation procedure and come automatic sorting egg product specification, thereby change that the existing efficiency of separation of existing manual work mode is low, labour intensity is big, fatiguability, have shortcomings such as subjectivity, sorting quality instability, realize the automatic sorting of egg product specification and effective control of sorting quality.
In order to achieve the above object, the invention provides a kind of method that is used for automatic sorting egg product specification, it is characterized in that adopting the following step:
(1) the egg product image recognition software of desiring to execute the task is deposited in the memory under program of the computer system that has image acquisition board;
(2) start this computer working and inductive switch counting, extract a floor projection cross-sectional image of an egg product of taking;
(3) set threshold values according to the cross-sectional image grey scale signal and obtain the bianry image signal;
(4) pixel in calculating egg product cross section, how many pixels represents the egg product size;
(5) obtain the pixel of three varying level projecting sections of same egg product according to inductive switch counting, calculate its mean value;
(6) set the minimum and maximum threshold values of egg product floor projection cross section pixel, when egg product cross section pixel average during greater than maximum or less than minimum of a value, the defective signal of output egg product;
(7) when egg product floor projection cross section pixel average during, press bianry image and calculate major and minor axis direction and major and minor axis pixel less than maximum or greater than minimum of a value;
(8) set the minimum and maximum value of egg product bianry image major and minor axis pixel ratio, when bianry image major and minor axis pixel ratio during greater than maximum or less than minimum of a value, the defective signal of output egg product;
(9) when egg product major and minor axis pixel ratio during, calculate egg product floor projection cross section pixel profile slope less than maximum or greater than minimum of a value;
(10) set the minimum and maximum value of egg product cross section pixel profile slope, when the profile slope of egg product pixel during greater than maximum or less than minimum of a value, the defective signal of output egg product;
(11) when egg product cross section pixel profile slope during less than maximum or greater than minimum of a value, the qualified signal of output egg product.
In order to realize said method, the invention provides a kind of equipment that is used for automatic sorting egg product specification, it is by the egg product transmission line, camera, source of parallel light, inductive switch and a computer are formed, the transport tape of described transmission line has the shallow grooves of same intervals, the bottom of shallow grooves is made up of transparent material, vertical fixing is equipped with three cameras of being furnished with ccd sensor above transport tape, interval between described camera is identical with the interval of described shallow grooves, be installed with three sources of parallel light under described camera and the shallow grooves, described inductive switch of described the 3rd pick-up lens fixed installation, described computer is furnished with image acquisition board.
After having taked above-mentioned method and apparatus, in the production of egg product processing enterprise, can realize automatic sorting to the egg product specification, when making in the past by artificial separation, the situation that more than 100,000 egg product of day output needs more than 10 people to carry out operation is changed into: after realizing automatic sorting, only need 1 people's operation, and day output can reach more than 20 ten thousand, and the quality of sorting has simultaneously obtained effective control.
Description of drawings
Below in conjunction with drawings and embodiments the present invention is described in further detail.
Fig. 1 is a kind of computer program flow chart of the present invention.
Fig. 2 is the schematic side elevation of one embodiment of the present invention.
Fig. 3 is the schematic side elevation of transport tape shallow grooves shown in Figure 1.
Fig. 4 is the schematic plan of transport tape shallow grooves shown in Figure 1.
The specific embodiment
Fig. 1 the invention provides a kind of computer program comes the method for automatic sorting egg product specification to the calculating of egg product horizontal cross-section image pixel program flow diagram, adopt the following step: the egg product image recognition software of desiring to execute the task is deposited in the memory under program of the computer system that has image acquisition board, start the non-contact induction switch counting of three different cross section images of an egg product of this computer working and the differentiation that links to each other with computer, extract a floor projection cross-sectional image of an egg product of taking, set threshold values according to the cross-sectional image grey scale signal and obtain the bianry image signal and calculate the pixel in egg product cross section, how many pixels represents the egg product size.Count the pixel of three varying level projecting sections that obtain same egg product and calculate its mean value according to inductive switch, and the minimum and maximum threshold values of setting egg product floor projection cross section pixel, when egg product cross section pixel average during greater than maximum or less than minimum of a value, the defective signal of output egg product.When egg product floor projection cross section pixel average during, press bianry image and calculate major and minor axis direction and major and minor axis pixel, and set the minimum and maximum value of major and minor axis pixel ratio less than maximum or greater than minimum of a value.When major and minor axis pixel ratio during greater than maximum or less than minimum of a value, the defective signal of output egg product.When major and minor axis pixel ratio during less than maximum or greater than minimum of a value, calculate the slope of egg product floor projection cross section pixel profile, and the minimum and maximum value of setting egg product cross section pixel profile slope, when the profile slope of egg product cross section pixel during greater than maximum or less than minimum of a value, the defective signal of output egg product, when egg product cross section pixel profile slope during less than maximum or greater than minimum of a value, the qualified signal of output egg product.By aforementioned calculation and differentiation, just can automatically select satisfactory egg product specification like this to each egg product.
In order to achieve the above object, the invention provides one group of facilities and equipments, Fig. 2 and 4 is the schematic side elevation and the vertical view of one embodiment of the present invention.In order to control the accurate shooting of an egg product profile, identical at interval square shallow grooves 5 is set on transport tape, also can be round-shaped shallow grooves.The suitable groove width of the appropriate intervals between shallow grooves and the shallow grooves and each shallow grooves makes each shallow grooves to lay respectively to be fixedly mounted in the coverage of the camera 1,2,3 directly over the transmission line, shallow grooves has and egg product can be limited in the groove and can make egg product can obtain the image of three different cross sections in transmission for egg product suitable size of free rolling in groove.The interval of three cameras 1,2,3 is identical with the interval of groove 5, and each egg product can be taken by three times successively, obtains three different floor projection cross sections.For the floor projection that guarantees egg product is taken, as shown in Figure 3, be installed with source of parallel light 6,7,8 under each camera 1,2,3 and shallow grooves 5, each bottom portion of groove of transport tape is set with the transparent material 9 that can penetrate parallel rays, as organic glass etc., shallow grooves can be fixedlyed connected with transmission line, also can flexibly connect, each bottom portion of groove of transport tape links to each other part for arc with the side, can make egg product reduce impact in rolling, increase rollability, remain intact state.The light of source of parallel light 6,7,8 passes transparent material 9 and shines egg product being shot, make egg product being shot form the section of outline image of floor projection, such egg product is taken by three times in transmission successively, can obtain the floor projection cross section of three diverse locations, i.e. the image of camera 3 acquisitions and preceding secondary are three different cross section images of same egg product by the image that camera 2 and camera 1 obtain.Each camera 1,2,3 is equipped with the above black-white CCD sensor of resolution ratio 380 lines, image pick-up card can be with the image input computer system of taking, camera 3 also is equipped with the image that a non-contact induction switch 4 is used for differentiating three floor projection cross sections of same egg product in addition, and computer system can be calculated three varying level projecting sections of same egg product.
The present invention is not limited to above-mentioned method and apparatus, is equally applicable to other method and apparatus, as long as utilize the floor projection image of egg product profile to design and distinguish the method and apparatus of egg product specification, all belongs to scope of the present invention.
Claims (4)
1. method that is used for automatic sorting egg product specification is characterized in that adopting the following step:
(1) the egg product image recognition software of desiring to execute the task is deposited in the memory under program of the computer system that has image acquisition board;
(2) start this computer working and inductive switch counting, extract a floor projection cross-sectional image of an egg product of taking;
(3) set threshold values according to the cross-sectional image grey scale signal and obtain the bianry image signal;
(4) pixel in calculating egg product cross section, how many pixels represents the egg product size;
(5) obtain the pixel of three varying level projecting sections of same egg product according to inductive switch counting, calculate its mean value;
(6) set the minimum and maximum threshold values of egg product floor projection cross section pixel, when egg product cross section pixel average during greater than maximum or less than minimum of a value, the defective signal of output egg product;
(7) when egg product floor projection cross section pixel average during, press bianry image and calculate major and minor axis direction and major and minor axis pixel less than maximum or greater than minimum of a value;
(8) assert the minimum and maximum value of egg product bianry image major and minor axis pixel ratio, when bianry image major and minor axis pixel ratio during greater than maximum or less than minimum of a value, the defective signal of output egg product;
(9) when egg product major and minor axis pixel ratio during, calculate egg product floor projection cross section pixel profile slope less than maximum or greater than minimum of a value;
(10) set the minimum and maximum value of egg product cross section pixel profile slope, when the profile slope of egg product pixel during greater than maximum or less than minimum of a value, the defective signal of output egg product;
(11) when egg product cross section pixel profile slope during less than maximum or greater than minimum of a value, the qualified signal of output egg product.
2. realize the described equipment that is used for the method for automatic sorting egg product specification of claim 1 for one kind, it is by the egg product transmission line, camera, source of parallel light, non-contact induction switch and a computer are formed, it is characterized in that: the transport tape of described transmission line (10) has the shallow grooves (5) of same intervals, the bottom (9) of shallow grooves (5) is made up of transparent material, vertical fixing is equipped with three cameras (1 of being furnished with ccd sensor directly over transport tape (10), 2,3), described camera (1,2,3) interval is identical with the interval of described shallow grooves (5), described camera (1,2,3) with under the shallow grooves (5) fixedly mount source of parallel light (6,7,8), described camera (a 3) fixed installation described non-contact induction switch (4), described computer is furnished with image acquisition board.
3. according to the described equipment of claim 2, it is characterized in that: above-mentioned shallow grooves (5) is flexible connection with conveyer belt (10).
4, according to the described equipment of claim 2, it is characterized in that: above-mentioned shallow grooves (5) bottom links to each other with the side and partly is arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031185479A CN100488645C (en) | 2003-01-23 | 2003-01-23 | Automatic classifying method and apparatus for egg specification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031185479A CN100488645C (en) | 2003-01-23 | 2003-01-23 | Automatic classifying method and apparatus for egg specification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1456394A CN1456394A (en) | 2003-11-19 |
| CN100488645C true CN100488645C (en) | 2009-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031185479A Expired - Fee Related CN100488645C (en) | 2003-01-23 | 2003-01-23 | Automatic classifying method and apparatus for egg specification |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2630777T3 (en) * | 2005-08-31 | 2017-08-24 | Agro System Co., Ltd. | Egg counter to count eggs transferred by an egg collection conveyor |
| CN102502000B (en) * | 2011-10-25 | 2014-08-27 | 中国电子科技集团公司第四十一研究所 | Method for detecting lack and upending of cigarettes in cigarette packet on basis of machine vision technology |
| CN109804948B (en) * | 2019-03-21 | 2021-07-02 | 重庆兴蕊隆生态农业有限公司 | Automatic egg classifying, collecting and picking system |
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Effective date of registration: 20081212 Address after: Postal code of Hongxing Village, Jingyang Town, Fuqing, Fujian, China: 350303 Applicant after: Fuqing Yangguang Food Co., Ltd. Co-applicant after: Fuzhou University Address before: No. 523, industrial road, Fuzhou, Fuzhou University, Fujian 350002, China Applicant before: Fuzhou University |
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Owner name: SUNSHINE FOOD CO., LTD., FUQING CITY Free format text: FORMER OWNER: FUZHOU UNIV. Effective date: 20081212 |
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