JP2613527B2 - Livestock weight estimation method by image processing - Google Patents
Livestock weight estimation method by image processingInfo
- Publication number
- JP2613527B2 JP2613527B2 JP4202858A JP20285892A JP2613527B2 JP 2613527 B2 JP2613527 B2 JP 2613527B2 JP 4202858 A JP4202858 A JP 4202858A JP 20285892 A JP20285892 A JP 20285892A JP 2613527 B2 JP2613527 B2 JP 2613527B2
- Authority
- JP
- Japan
- Prior art keywords
- livestock
- weight
- projected area
- image processing
- estimation method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】この発明は、ビデオカメラにより
撮影された画像を使って家畜の体重を非接触で計測する
方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring the weight of livestock in a non-contact manner using images taken by a video camera.
【０００２】[0002]
【従来の技術】従来は、数多くの家畜をそれぞれ、個々
に直接体重計にのせなければ各々の体重を知ることがで
きなかった。2. Description of the Related Art Heretofore, it was not possible to know the weight of a large number of livestock unless each animal was directly placed on a weighing scale.
【０００３】[0003]
【発明が解決しようとする課題】これには次のような欠
点がある。 （イ）家畜は、静止しないため、大変計測しにくかっ
た。 （ロ）そのため、数多い家畜の体重の計測には、人手や
労力が多大にかかった。 （ハ）よって多くの場合、１、２回しか計測されなかっ
た。 （ニ）家畜の、より適切な管理を行うためには、非接触
式の簡易な体重計測方法が確立されなければならない。This has the following disadvantages. (A) Since livestock did not stand still, it was very difficult to measure. (B) Therefore, measuring the weight of many livestock requires a great deal of labor and labor. (C) Therefore, in many cases, measurement was performed only once or twice. (D) In order to manage livestock more appropriately, a simple non-contact weight measurement method must be established.
【０００４】[0004]
【課題を解決するための手段】本発明は、家畜の２次元
投影面積Ａと体重Ｗが Ａ＝ａＷｂという密接な関係に
あることを発見し、それを応用してさらに多数の家畜を
非接触て計測できる方法を発見した。ａ，ｂは、未知数
であるため、最低３頭（匹、羽等）の家畜について体重
をあらかじめ知る必要がある。また、ここでいう２次元
投影面積とは、繰り返し２回以上撮影した画像の平均値
である中心投影面積をいう。 （イ）すでに、体重を実際に計測した家畜３頭（’
”）の中からまずが餌箱を囲った板の内側で、
餌を食べている時、暗くした畜舎、または、夜間におい
てライトで光をあて、上方投影像をビデオカメラで
撮影する。 （ロ）それを画像処理機、及びコンピュータによっ
て白黒に分ける２値化処理を行い、中心投影面積を算出
する。 （ハ）家畜’”においても同様にする。Means for Solving the Problems The present invention, two-dimensional projection area A and weight W livestock discovered that a close relationship A = aW b, a larger number of livestock non by applying it I discovered a method that can be measured by contact. Since a and b are unknown numbers, it is necessary to know the weight of at least three livestock (animals, wings, etc.) in advance. In addition, the two-dimensional projected area here refers to a central projected area that is an average value of images repeatedly photographed two or more times. (B) Three livestock animals whose weight was actually measured ('
First of all, inside the plate surrounding the feed box,
During feeding, the light is illuminated by a darkened barn or a light at night, and an upward projection image is taken by a video camera. (B) Binarizing the image into black and white using an image processor and a computer to calculate the central projected area. (C) Do the same for livestock '".
【０００５】[0005]
【作用】それによって得られた投影面積を、，”
の順にそれぞれＡ１Ａ２Ａ３、その体重をＷ１Ｗ２Ｗ３
すると、 これを利用して計測したいそれぞれの家畜について、す
でに[Function] The projection area obtained by the above operation is expressed as ","
In the order of A 1 A 2 A 3 , and their weights as W 1 W 2 W 3
Then For each livestock you want to measure using this,
【課題を解決するための手段】（イ）（ロ）で述べた同
様の方法で、中心投影面積を算出すれば体重を実際に計
測することなく求めることができるわけである。If the central projected area is calculated by the same method as described in (a) and (b), the weight can be obtained without actually measuring the weight.
【０００６】[0006]
【実施例】本発明の実施例について説明する。豚含内に
撮影枠を作成した。固定枠はＬ字型綱で組み、豚を
放置する箇所は台板で作成した。白い豚とのコントラ
ストを得るため、床に黒色のゴムマット▲１１▼を設置
し、まわりの壁を黒く塗装した。床面より３１０ｃｍの
高さにＣＣＤカメラを設置した。鮮明な画像を得るた
め、１５０Ｗの白熱灯を２台、枠の中間に設置し、変
圧器を介して光量を調節した。画像処理システムは、
白黒２５６階調の画像処理器、コンピュータ、モニ
ター用白黒テレビ▲１０▼からなる。すでに体重を測定
済みの豚、，”についてそれぞれ５回ずつ撮影し
て各々の平均値を、投影面積とした。コンピュータによ
る処理なので、わずかな時間でその数値を出すことがで
きる。それを豚、，”順にＡ１Ａ２Ａ３とし、そ
の体重をＷ１Ｗ２Ｗ３とすると Ａ１；９６４ Ａ２＝３１３６ Ａ３＝４６３７ Ｗ１＝１０５ Ｗ２＝６１．２ Ｗ３＝１０９．８ な
のでＡ＝ａＷｂより定数ａが２００、ｂが０．６６９と
なり豚の場合 も中心投影面積から非接触で体重を求めることができ
る。横軸に体重Ｗ（ｋｇ）、縦軸に投影面積Ａ（ｃ
ｍ２）をとってできたグラフが図３である。これは最低
３点を求めればこの曲線を得られることがわかる。２点
でもわかるが、より正確なものを出すために３点とし
た。図４は確認のため豚３３頭について同様のことを行
ってみたが、この場合、実際に計測したものと、本発明
による方法で求めたものと相関係数は、０．９９９とい
う値であることからも、精度の高い数値を求めるうこと
ができるということを証明している。実測した体重と推
定体重の差は平均±０．９ｋｇであり、通常２〜３ｋｇ
の誤差は実際に計測した場合にも家畜が動くことによっ
て起こるものであるから、本発明による計測は、極めて
精度の高い方法といえる。豚に限らず、牛、馬等の家畜
全般において応用できる。An embodiment of the present invention will be described. A shooting frame was created inside the pig. The fixed frame was assembled with an L-shaped rope, and the place where the pig was left was made with a base plate. To obtain a contrast with white pigs, a black rubber mat (11) was installed on the floor, and the surrounding walls were painted black. A CCD camera was installed at a height of 310 cm from the floor. In order to obtain clear images, two 150 W incandescent lamps were installed in the middle of the frame, and the amount of light was adjusted via a transformer. The image processing system
It is composed of an image processor with 256 gray scales, a computer, and a black and white television (10) for monitor. For the pigs whose weight has already been measured, five times each was taken and the average value was taken as the projected area. Because of the processing by the computer, the numerical value can be obtained in a short time. , "Assuming A 1 A 2 A 3 in the order and its weight as W 1 W 2 W 3 , A 1 ; 964 A 2 = 3136 A 3 = 4637 W 1 = 105 W 2 = 61.2 W 3 = 109.8. So from A = aW b , the constant a is 200, b is 0.669, and the pig is Also, the weight can be obtained without contact from the central projected area. The horizontal axis represents body weight W (kg), and the vertical axis represents projected area A (c).
FIG. 3 shows a graph obtained by taking m 2 ). It can be seen that this curve can be obtained by obtaining at least three points. Although it can be understood from two points, three points were given to obtain a more accurate one. In FIG. 4, the same was performed for 33 pigs for confirmation. In this case, the correlation coefficient between the actually measured value and the value obtained by the method according to the present invention was 0.999. This proves that high-precision numerical values can be obtained. The difference between the measured weight and the estimated weight is an average ± 0.9 kg, usually 2-3 kg.
Is caused by the movement of livestock even when it is actually measured, so the measurement according to the present invention can be said to be an extremely accurate method. It can be applied not only to pigs but also to livestock in general such as cattle and horses.
【０００７】[0007]
【発明の効果】本発明の方法は、最低でも３回の実測を
必要とするものの、数多い家畜の体重を何回も非接触で
推定でき、また、その精度も極めて高いこともわかっ
た。実施例では、特別な枠を用いての撮影であったが、
実際には、単に豚舎の天井にカメラを設置して投影面積
が算出できるものであれば、何でもよいのである。家畜
の適切な管理を行う上で、その体重の非接触式の簡易な
計測方法は大変に役立つ、極めて画期的な方法である。Although the method of the present invention requires at least three actual measurements, it has been found that the weight of many livestock can be estimated many times in a non-contact manner and the accuracy is extremely high. In the example, the shooting was performed using a special frame.
Actually, anything can be used as long as the projected area can be calculated by simply installing a camera on the roof of a piggery. In order to properly manage livestock, a simple non-contact method of measuring their weight is a very useful and extremely innovative method.
【図１】本発明を実施するための一例を示した図であ
る。FIG. 1 is a diagram showing an example for implementing the present invention.
【図２】本発明を実施した際の斜視図である。FIG. 2 is a perspective view when the present invention is implemented.
【図３】本発明を実施した際に得ることのできた、豚の
投影面積▲１２▼と体重▲１３▼との関係を表したグラ
フである。FIG. 3 is a graph showing the relationship between the projected area (12) and the weight (13) of a pig, which can be obtained when the present invention is carried out.
【図４】３３頭の豚について、投影面積▲１２▼と体重
▲１３▼との関係を表したグラフである。FIG. 4 is a graph showing the relationship between projected area (12) and weight (13) for 33 pigs.
【符号の説明】 ，”は家畜（豚） は餌箱 は板 はラ
イト はビデオカメラ は画像処理器 はコンピ
ュータ はライト調節器（変圧器）は撮影枠 ▲１
０▼はモニターテレビ ▲１１▼はゴムマット ▲１２
▼は投影面積（ｃｍ２）▲１３▼は豚の体重（ｋｇ）[Explanation of the symbols], "means livestock (pig) is feed box, board is light, video camera is image processor, computer is light controller (transformer), shooting frame ▲ 1
0 ▼ is a monitor TV ▲ 11 ▼ is a rubber mat ▲ 12
▼ is the projected area (cm 2 ) ▲ 13 is the weight of the pig (kg)
Claims (1)
画像をコンピュータで処理し、その投影面積（Ａ）を算
出し、ａ，ｂを定数とする関係式Ａ＝ａＷｂに代入し
て、家畜の体重（Ｗ）を推定する方法1. A two-dimensional projected image of a livestock photographed by a video camera is processed by a computer, the projected area (A) is calculated, and the projected area (A) is substituted into a relational expression A = aW b where a and b are constants. Method for estimating weight (W) of livestock
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4202858A JP2613527B2 (en) | 1992-06-19 | 1992-06-19 | Livestock weight estimation method by image processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4202858A JP2613527B2 (en) | 1992-06-19 | 1992-06-19 | Livestock weight estimation method by image processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH063181A JPH063181A (en) | 1994-01-11 |
| JP2613527B2 true JP2613527B2 (en) | 1997-05-28 |
Family
ID=16464364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4202858A Expired - Lifetime JP2613527B2 (en) | 1992-06-19 | 1992-06-19 | Livestock weight estimation method by image processing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2613527B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8659764B2 (en) | 2009-02-27 | 2014-02-25 | Body Surface Translations, Inc. | Estimating physical parameters using three dimensional representations |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002286421A (en) * | 2001-03-28 | 2002-10-03 | Hideo Minagawa | Apparatus for measuring weight of animal |
| KR20030070207A (en) * | 2002-02-21 | 2003-08-29 | 대한민국 (관리부서 농촌진흥청) | measurement system of body parameters by using image processing |
| WO2010127277A2 (en) * | 2009-05-01 | 2010-11-04 | Texas Tech University System | Remote contactless stereoscopic mass estimation system |
| KR101293814B1 (en) * | 2011-12-12 | 2013-08-06 | 성균관대학교산학협력단 | Systems of estimating weight of chicken carcass and methods of estimating weight of chicken carcass |
| CN104344877B (en) * | 2014-10-30 | 2016-08-24 | 浙江大学 | The field enumeration Weighing method of a kind of chicken and system |
| WO2017208436A1 (en) | 2016-06-03 | 2017-12-07 | 株式会社オプティム | Animal weight estimation system, animal weight estimation method, and program |
| JP2020106422A (en) * | 2018-12-27 | 2020-07-09 | Ｎｔｔテクノクロス株式会社 | Weight estimation device, weight estimation method, and program |
| WO2021241085A1 (en) * | 2020-05-25 | 2021-12-02 | パナソニックＩｐマネジメント株式会社 | Livestock management system and livestock management method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5243693B2 (en) * | 1973-03-26 | 1977-11-01 | ||
| JPS6413407A (en) * | 1988-06-04 | 1989-01-18 | Caterpillar Mitsubishi Ltd | Measuring instrument for weight of transported body |
| JP2583973B2 (en) * | 1988-06-07 | 1997-02-19 | 松下電器産業株式会社 | Automatic air conditioner |
| JPH04122819A (en) * | 1990-09-14 | 1992-04-23 | Iseki & Co Ltd | Measuring equipment of weight of vegetables and fruits |
-
1992
- 1992-06-19 JP JP4202858A patent/JP2613527B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8659764B2 (en) | 2009-02-27 | 2014-02-25 | Body Surface Translations, Inc. | Estimating physical parameters using three dimensional representations |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH063181A (en) | 1994-01-11 |
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