JP2021105628A - Article imaging device - Google Patents

Article imaging device Download PDF

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JP2021105628A
JP2021105628A JP2019235587A JP2019235587A JP2021105628A JP 2021105628 A JP2021105628 A JP 2021105628A JP 2019235587 A JP2019235587 A JP 2019235587A JP 2019235587 A JP2019235587 A JP 2019235587A JP 2021105628 A JP2021105628 A JP 2021105628A
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article
container
light
housing
space
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JP7411928B2 (en
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貴文 矢野
Takafumi Yano
貴文 矢野
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Rutilea Inc
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Rutilea Inc
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Abstract

To provide an article imaging device capable of minimizing a surface area that becomes a blind spot from a light source, to illuminate a surface of an article in a wide range.SOLUTION: An article imaging device 10 comprising a plurality of light sources 22 that illuminates an article 40, and a camera 24 that images the article 40, comprises a housing 12 that surrounds an article space 30 in which the article 40 is arranged by a light blocking member that blocks light. At least one set of light sources 22 is arranged at positions facing each other with the article space 30 interposed therebetween.SELECTED DRAWING: Figure 2

Description

本発明は、物品を照明する複数の光源と、物品を撮影するカメラと、を備える物品撮影装置に関する。 The present invention relates to an article photographing device including a plurality of light sources for illuminating an article and a camera for photographing an article.

特許文献１には、鋳物等の物品の表面に存在する欠陥を検出する装置が開示される。この装置は、物品の周囲に配置される複数の光源を順次個別に発光させ、発光毎にカメラで物品を撮影することにより、撮影条件の異なる複数の画像を取得する。物品の表面に欠陥が存在する場合は、欠陥特有の影または反射が発生する。この装置は、そのような影または反射を欠陥として検出する。 Patent Document 1 discloses an apparatus for detecting defects existing on the surface of an article such as a casting. This device acquires a plurality of images having different shooting conditions by sequentially and individually emitting light from a plurality of light sources arranged around the article and photographing the article with a camera for each light emission. If defects are present on the surface of the article, shadows or reflections specific to the defects will occur. The device detects such shadows or reflections as defects.

特開２０１９−３２２６８号公報Japanese Unexamined Patent Publication No. 2019-32268

特許文献１の装置において、光源から死角になる表面部位に欠陥が存在する場合には、その欠陥自体が影に含まれるため、欠陥に起因する影や反射が発生しない。このため、光源から死角になる表面部位に存在する欠陥は検出されにくい。 In the apparatus of Patent Document 1, when a defect exists in the surface portion that becomes a blind spot from the light source, the defect itself is included in the shadow, so that the shadow or reflection due to the defect does not occur. Therefore, it is difficult to detect defects existing on the surface portion that becomes a blind spot from the light source.

本発明はこのような課題を考慮してなされたものであり、光源から死角になる表面部位を極力少なくして、物品の表面を広範囲に照明することができる物品撮影装置を提供することを目的とする。 The present invention has been made in consideration of such a problem, and an object of the present invention is to provide an article photographing apparatus capable of illuminating the surface of an article in a wide range by minimizing the surface portion that becomes a blind spot from a light source. And.

本発明の態様は、
物品を照明する複数の光源と、前記物品を撮影するカメラと、を備える物品撮影装置であって、
光を遮断する光遮断部材により前記物品が配置される物品空間を囲繞する筐体を備え、
少なくとも１組の前記光源は、前記物品空間を挟んで互いに対向する位置に配置される。 Aspects of the present invention are
An article photographing device including a plurality of light sources for illuminating an article and a camera for photographing the article.
A housing that surrounds the article space in which the article is placed by a light blocking member that blocks light is provided.
At least one set of the light sources is arranged at positions facing each other across the article space.

本発明によれば、光源から死角になる表面部位が少なくなり、物品の表面を広範囲に照明することができる。また、照明条件のばらつきをなくすことができる。 According to the present invention, the surface portion that becomes a blind spot from the light source is reduced, and the surface of the article can be illuminated in a wide range. In addition, it is possible to eliminate variations in lighting conditions.

図１は物品撮影装置の部分断面を示す斜視図である。FIG. 1 is a perspective view showing a partial cross section of the article photographing apparatus. 図２は図１のＩＩ−ＩＩ線断面を示す図である。FIG. 2 is a diagram showing a cross section taken along line II-II of FIG. 図３は図１のＩＩＩ−ＩＩＩ線断面を示す図である。FIG. 3 is a diagram showing a cross section taken along line III-III of FIG. 図４は図１のＩＶ−ＩＶ線断面を示す図である。FIG. 4 is a diagram showing a cross section taken along line IV-IV of FIG. 図５は物品の高さと容器の半径と支持部材の半径を示す図である。FIG. 5 is a diagram showing the height of the article, the radius of the container, and the radius of the support member.

以下、本発明に係る物品撮影装置について、好適な実施形態を挙げ、添付の図面を参照して詳細に説明する。 Hereinafter, the article photographing apparatus according to the present invention will be described in detail with reference to the accompanying drawings with reference to suitable embodiments.

以下では説明の便宜のために、互いに直交する２軸をＸ軸およびＹ軸とし、更にＸ軸およびＹ軸と直交する１軸をＺ軸とする。そして、Ｘ軸の＋方向に向かう方向をＸ方向とし、−方向に向かう方向を−Ｘ方向とする。同様に、Ｙ軸の＋方向に向かう方向をＹ方向とし、−方向に向かう方向を−Ｙ方向とし、Ｚ軸の＋方向に向かう方向をＺ方向とし、−方向に向かう方向を−Ｚ方向とする。なお、本実施形態ではＹ方向は鉛直上方向であり−Ｙ方向は鉛直下方向とする。 In the following, for convenience of explanation, two axes orthogonal to each other will be referred to as an X-axis and a Y-axis, and one axis orthogonal to the X-axis and the Y-axis will be referred to as a Z-axis. Then, the direction toward the + direction of the X axis is defined as the X direction, and the direction toward the − direction is defined as the −X direction. Similarly, the direction toward the + direction of the Y axis is the Y direction, the direction toward the-direction is the -Y direction, the direction toward the + direction of the Z axis is the Z direction, and the direction toward the-direction is the -Z direction. do. In the present embodiment, the Y direction is the vertically upward direction and the −Y direction is the vertically downward direction.

［１．物品撮影装置１０の構成］
図１〜図４に示されるように、物品撮影装置１０は、筐体１２と、鏡体１４と、容器１８と、支持部材２０と、複数の光源２２と、複数のカメラ２４と、を備える。物品撮影装置１０は、筐体１２の内部空間に物品４０の置き位置としての物品空間３０を含み、物品空間３０に置かれる物品４０を１以上の方向から同時に照明して撮影する。物品４０は、容器１８の内部空間よりも小さければどのような物であってもよい。物品４０として、例えば車両の部品等が想定される。 [1. Configuration of article photographing device 10]
As shown in FIGS. 1 to 4, the article photographing apparatus 10 includes a housing 12, a mirror body 14, a container 18, a support member 20, a plurality of light sources 22, and a plurality of cameras 24. .. The article photographing device 10 includes the article space 30 as a placement position of the article 40 in the internal space of the housing 12, and simultaneously illuminates the article 40 placed in the article space 30 from one or more directions to take a picture. The article 40 may be any object as long as it is smaller than the internal space of the container 18. As the article 40, for example, a vehicle part or the like is assumed.

筐体１２は、物品空間３０に対して６つの方向（Ｘ方向、−Ｘ方向、Ｙ方向、−Ｙ方向、Ｚ方向、−Ｚ方向）に配置された板状部材により組み立てられる６面体である。各板状部材は、光を遮断する光遮断部材であり、例えば有色の樹脂（アクリル樹脂等）や金属等で形成される。筐体１２は、光遮断部材により容器１８を囲繞する。筐体１２の一部、例えば相対的にＹ方向側に配置される蓋部１２ａ（６面体の１面）は収容部１２ｂ（６面体の５面）に対して着脱自在である。 The housing 12 is a hexahedron assembled by plate-shaped members arranged in six directions (X direction, −X direction, Y direction, −Y direction, Z direction, −Z direction) with respect to the article space 30. .. Each plate-shaped member is a light blocking member that blocks light, and is formed of, for example, a colored resin (acrylic resin or the like), a metal, or the like. The housing 12 surrounds the container 18 with a light blocking member. A part of the housing 12, for example, the lid portion 12a (one surface of the hexahedron) arranged relatively on the Y direction side is removable from the accommodating portion 12b (five surfaces of the hexahedron).

鏡体１４は、筐体１２の６つの内面に貼り付けられる。鏡体１４の鏡面１４ａは、筐体１２の内側に向けられる。鏡体１４は、筐体１２の内面全面を覆うことが好ましい。鏡体１４は、筐体１２の内側の方向から入射する光を筐体１２の内側に散乱させる。 The mirror body 14 is attached to the six inner surfaces of the housing 12. The mirror surface 14a of the mirror body 14 is directed to the inside of the housing 12. The mirror body 14 preferably covers the entire inner surface of the housing 12. The mirror body 14 scatters light incident from the inside of the housing 12 inside the housing 12.

容器１８は、中空の球体であり、半透明の部材、例えば樹脂（アクリル樹脂等）で形成される。ここでいう半透明というのは、部材の一面側から入射した光の一部を他面側に透過する一方で、部材の一面側にある物体の形が他面側から明確に見えない程度の透明度であることをいう。容器１８の内部には物品空間３０を含む球状の空間が形成される。すなわち、容器１８は、半透明の部材により物品空間３０を囲繞する。容器１８は、−Ｙ方向側の鏡体１４に取り付けられた透明の基台１６に載せられる。容器１８の中心と筐体１２の中心は一致する。容器１８の一部、例えばＹ方向側に配置される上半体１８ａは−Ｙ方向側に配置される下半体１８ｂに対して着脱自在である。 The container 18 is a hollow sphere and is made of a translucent member, for example, a resin (acrylic resin or the like). Translucent here means that while part of the light incident from one side of the member is transmitted to the other side, the shape of the object on one side of the member cannot be clearly seen from the other side. It means that it is transparent. A spherical space including the article space 30 is formed inside the container 18. That is, the container 18 surrounds the article space 30 with a translucent member. The container 18 is placed on a transparent base 16 attached to the mirror body 14 on the −Y direction side. The center of the container 18 and the center of the housing 12 coincide with each other. A part of the container 18, for example, the upper half body 18a arranged on the Y direction side is removable with respect to the lower half body 18b arranged on the −Y direction side.

支持部材２０は、透明の板状部材、例えば樹脂（アクリル樹脂等）で形成される。支持部材２０の外周形状は、容器１８の内周形状と一致する。容器１８の内周形状が円である場合、支持部材２０の外周形状も円である。支持部材２０は水平にされた状態で容器１８の内部に収容される。支持部材２０の外周部分が容器１８の内周部分に当接することで、支持部材２０は容器１８の内部で適当な高さ位置に保持される。支持部材２０は、物品４０を−Ｙ方向側（下方側）から支持する。支持部材２０の半径ｒは、物品４０の高さに応じて設定される。本実施形態では、物品４０の中心位置を適宜調整するために、物品４０の高さに応じた複数の支持部材２０、具体的には半径ｒが異なる複数の支持部材２０が予め用意されている。 The support member 20 is formed of a transparent plate-shaped member, for example, a resin (acrylic resin or the like). The outer peripheral shape of the support member 20 matches the inner peripheral shape of the container 18. When the inner peripheral shape of the container 18 is circular, the outer peripheral shape of the support member 20 is also circular. The support member 20 is housed inside the container 18 in a horizontal state. When the outer peripheral portion of the support member 20 comes into contact with the inner peripheral portion of the container 18, the support member 20 is held at an appropriate height position inside the container 18. The support member 20 supports the article 40 from the −Y direction side (lower side). The radius r of the support member 20 is set according to the height of the article 40. In the present embodiment, in order to appropriately adjust the center position of the article 40, a plurality of support members 20 according to the height of the article 40, specifically, a plurality of support members 20 having different radii r are prepared in advance. ..

光源２２は、物品空間３０に置かれた物品４０を照明するＬＥＤである。各光源２２は、筐体１２と容器１８との間に配置される。本実施形態では、光源２２が６つの鏡面１４ａのそれぞれの中心位置に取り付けられる。つまり、Ｘ方向側の鏡面１４ａに取り付けられる光源２２と−Ｘ方向側の鏡面１４ａに取り付けられる光源２２は、物品空間３０を挟んで互いに対向する。Ｙ方向側の鏡面１４ａに取り付けられる光源２２と−Ｙ方向側の鏡面１４ａに取り付けられる光源２２は、物品空間３０を挟んで互いに対向する。Ｚ方向側の鏡面１４ａに取り付けられる光源２２と−Ｚ方向側の鏡面１４ａに取り付けられる光源２２は、物品空間３０を挟んで互いに対向する。各光源２２は、図示しない照明用回路に電気的に接続される。 The light source 22 is an LED that illuminates the article 40 placed in the article space 30. Each light source 22 is arranged between the housing 12 and the container 18. In this embodiment, the light source 22 is attached to the center position of each of the six mirror surfaces 14a. That is, the light source 22 attached to the mirror surface 14a on the X direction side and the light source 22 attached to the mirror surface 14a on the −X direction side face each other with the article space 30 interposed therebetween. The light source 22 attached to the mirror surface 14a on the Y direction side and the light source 22 attached to the mirror surface 14a on the −Y direction side face each other with the article space 30 interposed therebetween. The light source 22 attached to the mirror surface 14a on the Z direction side and the light source 22 attached to the mirror surface 14a on the −Z direction side face each other with the article space 30 interposed therebetween. Each light source 22 is electrically connected to an illumination circuit (not shown).

カメラ２４は、容器１８の内部に配置される。本実施形態では、複数のカメラ２４が、その光軸を物品空間３０に向けた状態で、容器１８の内周面に取り付けられる。例えば、図２に示されるように、容器１８の中心位置を原点とするＸＹ座標系において、容器１８の内周面のうち、仰俯角が４５度となる４つの位置に、それぞれ１つずつカメラ２４が取り付けられる。また、図３に示されるように、容器１８の中心位置を原点とするＺＹ座標系において、容器１８の内周面のうち、仰俯角が４５度となる４つの位置に、それぞれ１つずつカメラ２４が取り付けられる。また、図４に示されるように、容器１８の中心位置を原点とするＸＺ座標系において、容器１８の内周面のうち、仰俯角が４５度となる４つの位置に、それぞれ１つずつカメラ２４が取り付けられる。各カメラ２４は、図示しない制御回路に電気的に接続される。 The camera 24 is arranged inside the container 18. In the present embodiment, the plurality of cameras 24 are attached to the inner peripheral surface of the container 18 with their optical axes oriented toward the article space 30. For example, as shown in FIG. 2, in the XY coordinate system with the center position of the container 18 as the origin, one camera is provided at each of the four positions of the inner peripheral surface of the container 18 at which the elevation / depression angle is 45 degrees. 24 is attached. Further, as shown in FIG. 3, in the ZY coordinate system with the center position of the container 18 as the origin, one camera is provided at each of the four positions of the inner peripheral surface of the container 18 at which the elevation / depression angle is 45 degrees. 24 is attached. Further, as shown in FIG. 4, in the XZ coordinate system with the center position of the container 18 as the origin, one camera is provided at each of the four positions of the inner peripheral surface of the container 18 at which the elevation / depression angle is 45 degrees. 24 is attached. Each camera 24 is electrically connected to a control circuit (not shown).

［２．物品４０の撮影〜検査の流れ］
撮影開始前、筐体１２の蓋部１２ａが収容部１２ｂから取り外され、更に容器１８の上半体１８ａが下半体１８ｂから取り外される。この状態で、筐体１２および容器１８の内部は開放される。次に、撮影対象（検査対象）の物品４０の高さに見合った支持部材２０が選択される。 [2. Photographing of article 40-inspection flow]
Before the start of photographing, the lid portion 12a of the housing 12 is removed from the accommodating portion 12b, and the upper half body 18a of the container 18 is further removed from the lower half body 18b. In this state, the insides of the housing 12 and the container 18 are opened. Next, the support member 20 suitable for the height of the article 40 to be photographed (inspected) is selected.

図５に示されるように、物品４０の高さをＨとし、容器１８の内周の半径をＲとすると、物品４０の中心と容器１８の中心を一致させることができる支持部材２０の半径ｒは、下記（１）式により算出される。 As shown in FIG. 5, where H is the height of the article 40 and R is the radius of the inner circumference of the container 18, the radius r of the support member 20 capable of aligning the center of the article 40 with the center of the container 18. Is calculated by the following equation (1).

Figure 2021105628
Figure 2021105628

上記（１）式の算出結果に最も近い半径ｒの支持部材２０が選択される。選択された支持部材２０は、その外周部分が容器１８の内周部分に当接し、容器１８の内部に保持される。物品４０は、物品空間３０、すなわち支持部材２０の上面の中心位置に置かれる。このとき、適切な支持部材２０が選択されているため、物品４０の中心と容器１８および筐体１２の中心は概ね一致する。その後、容器１８の上半体１８ａが下半体１８ｂに取り付けられ、筐体１２の蓋部１２ａが収容部１２ｂに取り付けられる。 The support member 20 having the radius r closest to the calculation result of the above equation (1) is selected. The outer peripheral portion of the selected support member 20 abuts on the inner peripheral portion of the container 18 and is held inside the container 18. The article 40 is placed at the center position of the article space 30, that is, the upper surface of the support member 20. At this time, since the appropriate support member 20 is selected, the center of the article 40 and the center of the container 18 and the housing 12 substantially coincide with each other. After that, the upper half body 18a of the container 18 is attached to the lower half body 18b, and the lid portion 12a of the housing 12 is attached to the accommodating portion 12b.

撮影者が物品撮影装置１０の撮影スイッチ（不図示）を操作すると、照明用回路に電流が供給され、複数の光源２２が同時にかつ瞬間的に発光する。更に、制御回路から撮影信号が出力され、複数のカメラ２４が物品４０を同時に撮影する。各カメラ２４は、撮影により取得した画像データを記憶装置（不図示）に出力する。 When the photographer operates the photographing switch (not shown) of the article photographing device 10, a current is supplied to the illumination circuit, and the plurality of light sources 22 emit light at the same time and instantaneously. Further, a photographing signal is output from the control circuit, and a plurality of cameras 24 simultaneously photograph the article 40. Each camera 24 outputs the image data acquired by shooting to a storage device (not shown).

撮影終了後、筐体１２の蓋部１２ａが収容部１２ｂから取り外され、更に容器１８の上半体１８ａが下半体１８ｂから取り外される。この状態で、筐体１２および容器１８の内部は開放される。物品４０は、物品空間３０から取り出される。 After the imaging is completed, the lid portion 12a of the housing 12 is removed from the housing portion 12b, and the upper half body 18a of the container 18 is further removed from the lower half body 18b. In this state, the insides of the housing 12 and the container 18 are opened. The article 40 is taken out of the article space 30.

図示しない検査装置は、撮影された物品４０の画像データを記憶装置から読み込み、物品４０の表面の画像認識を行い、欠陥（傷、へこみ等）の有無を判定する。 An inspection device (not shown) reads the image data of the photographed article 40 from the storage device, recognizes the image of the surface of the article 40, and determines the presence or absence of defects (scratches, dents, etc.).

［３．物品４０の照明］
１組の光源２２は、相対する２つの方向（Ｘ方向側と−Ｘ方向側、Ｙ方向側と−Ｙ方向側、Ｚ方向側と−Ｚ方向側）から物品４０を照明するため、物品４０の広範囲を照明することができる。 [3. Lighting of article 40]
Since one set of light sources 22 illuminates the article 40 from two opposing directions (X-direction side and -X-direction side, Y-direction side and -Y-direction side, Z-direction side and -Z-direction side), the article 40 Can illuminate a wide area of.

光源２２から放射される光の一部（第１光という）は、容器１８を外周側から内周側に透過して物品４０に入射する。また、光源２２から放射される光の一部（第２光という）は、いずれかの鏡面１４ａに入射する。また、光源２２から放射される光の一部（第３光という）は、容器１８の外周面で散乱し、または、容器１８を外周側から内周側に透過した後に内周側から外周側に透過し、いずれかの鏡面１４ａに入射する。鏡面１４ａに入射した光（第２光と第３光）は散乱する。散乱光の一部は、容器１８を外周側から内周側に透過して物品４０に入射する。また、散乱光の一部は、いずれかの鏡面１４ａに入射し再び散乱する。このように物品４０は、光源２２から放射される直接光（第１光）と、鏡面１４ａで散乱する間接光（第２光と第３光）により照明される。更に、光源２２および鏡面１４ａは物品４０の全方向に配置されるため、物品４０の全面が照明される。 A part of the light emitted from the light source 22 (referred to as the first light) passes through the container 18 from the outer peripheral side to the inner peripheral side and enters the article 40. Further, a part of the light emitted from the light source 22 (referred to as the second light) is incident on any of the mirror surfaces 14a. Further, a part of the light emitted from the light source 22 (referred to as the third light) is scattered on the outer peripheral surface of the container 18, or is transmitted from the outer peripheral side to the inner peripheral side of the container 18 and then from the inner peripheral side to the outer peripheral side. And incident on any of the mirror surfaces 14a. The light (second light and third light) incident on the mirror surface 14a is scattered. A part of the scattered light passes through the container 18 from the outer peripheral side to the inner peripheral side and enters the article 40. Further, a part of the scattered light is incident on one of the mirror surfaces 14a and scattered again. In this way, the article 40 is illuminated by the direct light (first light) emitted from the light source 22 and the indirect light (second light and third light) scattered on the mirror surface 14a. Further, since the light source 22 and the mirror surface 14a are arranged in all directions of the article 40, the entire surface of the article 40 is illuminated.

筐体１２は光遮断部材で形成されるため、筐体１２の外部の環境光は、筐体１２の内部に透過しない。また、光源２２から放射される光は、筐体１２の外部に透過しない。 Since the housing 12 is formed of a light blocking member, ambient light outside the housing 12 does not pass through the inside of the housing 12. Further, the light radiated from the light source 22 does not pass through the outside of the housing 12.

［４．変形例］
上述した実施形態は様々な変形が可能である。例えば、筐体１２の蓋部１２ａは、収容部１２ｂに対して着脱自在である代わりに開閉自在であってもよい。同様に、容器１８の上半体１８ａは、下半体１８ｂに対して着脱自在である代わりに開閉自在であってもよい。 [4. Modification example]
The above-described embodiment can be modified in various ways. For example, the lid portion 12a of the housing 12 may be openable and closable instead of being detachable from the accommodating portion 12b. Similarly, the upper half body 18a of the container 18 may be openable and closable instead of being detachable with respect to the lower half body 18b.

容器１８の形状は球体でなくてもよい。例えば、容器１８は、複数の多角形からなる正多面体であってもよい。また、正多面体が有する面の数とカメラ２４の数が一致し、各面にカメラ２４が取り付けられてもよい。また、正多面体が有する頂点の数とカメラ２４の数が一致し、各頂点にカメラ２４が取り付けられてもよい。 The shape of the container 18 does not have to be spherical. For example, the container 18 may be a regular polyhedron composed of a plurality of polygons. Further, the number of faces of the regular polyhedron and the number of cameras 24 may match, and the camera 24 may be attached to each face. Further, the number of vertices of the regular polyhedron and the number of cameras 24 may match, and the camera 24 may be attached to each vertex.

光源２２の数および配置は上述した形態に限られない。光源２２は、鏡面１４ａの中心位置以外の位置に取り付けられてもよい。但し、光源２２は少なくとも２つ必要であり、少なくとも１組の光源２２は、物品空間３０を挟んで互いに対向する位置に配置される必要がある。また、光源２２は、鏡面１４ａに取り付けられる代わりに容器１８の外周面に取り付けられてもよい。また、光源２２は、ＬＥＤの代わりにキセノンランプであってもよい。 The number and arrangement of the light sources 22 are not limited to those described above. The light source 22 may be mounted at a position other than the center position of the mirror surface 14a. However, at least two light sources 22 are required, and at least one set of light sources 22 needs to be arranged at positions facing each other with the article space 30 interposed therebetween. Further, the light source 22 may be attached to the outer peripheral surface of the container 18 instead of being attached to the mirror surface 14a. Further, the light source 22 may be a xenon lamp instead of the LED.

カメラ２４の数および配置は上述した形態に限られない。カメラ２４は、物品４０の撮影対象部分の正面に配置されていればよい。また、カメラ２４の本体が容器１８の外周面に取り付けられ、カメラ２４のレンズが容器１８を貫通する孔に挿入されていてもよい。カメラ２４の数は１個でもよい。また、光源２２から物品４０に直接入射する光（直接光）をカメラ２４が遮らないように、１組の光源２２の間以外の位置にカメラ２４が配置されてもよい。 The number and arrangement of the cameras 24 are not limited to those described above. The camera 24 may be arranged in front of the part to be photographed of the article 40. Further, the main body of the camera 24 may be attached to the outer peripheral surface of the container 18, and the lens of the camera 24 may be inserted into a hole penetrating the container 18. The number of cameras 24 may be one. Further, the camera 24 may be arranged at a position other than between the set of light sources 22 so that the camera 24 does not block the light (direct light) directly incident on the article 40 from the light source 22.

基台１６はなくてもよい。この場合、容器１８は、その外周面が周囲にある６つの鏡面１４ａに当接することにより筐体１２の内部の定位置に保持される。 The base 16 may not be present. In this case, the container 18 is held in a fixed position inside the housing 12 by abutting the outer peripheral surface thereof with the six mirror surfaces 14a around it.

［５．実施形態から得られる発明］
上記実施形態から把握しうる発明について、以下に記載する。 [5. Invention obtained from the embodiment]
The inventions that can be grasped from the above embodiments are described below.

本発明の態様において、
物品４０を照明する複数の光源２２と、前記物品４０を撮影するカメラ２４と、を備える物品撮影装置１０であって、
光を遮断する光遮断部材により前記物品４０が配置される物品空間３０を囲繞する筐体１２を備え、
少なくとも１組の前記光源２２は、前記物品空間３０を挟んで互いに対向する位置に配置される。 In aspects of the invention
An article photographing device 10 including a plurality of light sources 22 for illuminating the article 40 and a camera 24 for photographing the article 40.
A housing 12 that surrounds an article space 30 in which the article 40 is arranged by a light blocking member that blocks light is provided.
At least one set of the light sources 22 are arranged at positions facing each other with the article space 30 interposed therebetween.

上記構成によれば、互いに対向して配置される１組の光源２２により物品４０を照明するため、一方からの照明により物品４０の表面に発生する影を他方からの照明により相殺することができる。従って、光源２２から死角になる表面部位が少なくなり、物品４０の表面を広範囲に照明することができる。また、最低限の数の光源２２で効果的に物品４０を照明することができる。また、上記構成によれば、筐体１２が光遮断部材で形成されるため、筐体１２の外部の環境光の影響を受けることなく物品４０を照明することができる。すなわち、照明条件のばらつきをなくすことができる。 According to the above configuration, since the article 40 is illuminated by a set of light sources 22 arranged opposite to each other, the shadow generated on the surface of the article 40 by the illumination from one side can be canceled by the illumination from the other side. .. Therefore, the number of surface portions that become blind spots from the light source 22 is reduced, and the surface of the article 40 can be illuminated over a wide range. In addition, the article 40 can be effectively illuminated with the minimum number of light sources 22. Further, according to the above configuration, since the housing 12 is formed of the light blocking member, the article 40 can be illuminated without being affected by the ambient light outside the housing 12. That is, it is possible to eliminate variations in lighting conditions.

本発明の態様において、
入射した光を散乱させる鏡体１４を前記筐体１２の内部に備え、
前記鏡体１４の鏡面１４ａは、前記物品空間３０に向けられてもよい。 In aspects of the invention
A mirror body 14 that scatters incident light is provided inside the housing 12.
The mirror surface 14a of the mirror body 14 may be directed to the article space 30.

上記構成によれば、光源２２により物品４０を直接的に照明するだけでなく、鏡体１４により物品４０を間接的に照明するため、物品４０の表面をより広範囲に照明することができ、より広範囲に影を相殺することができる。従って、光源２２から死角になる表面部位がより少なくなり、物品４０の表面をより広範囲に照明することができる。 According to the above configuration, not only the article 40 is directly illuminated by the light source 22, but also the article 40 is indirectly illuminated by the mirror body 14, so that the surface of the article 40 can be illuminated in a wider range. Shadows can be offset over a wide area. Therefore, the surface portion that becomes a blind spot from the light source 22 is reduced, and the surface of the article 40 can be illuminated in a wider range.

本発明の態様において、
前記物品空間３０を囲繞し、また、前記カメラ２４の光軸を前記物品空間３０に向けた状態で前記カメラ２４を保持する容器１８を備え、
前記筐体１２は、前記光遮断部材により前記容器１８を囲繞してもよい。 In aspects of the invention
A container 18 that surrounds the article space 30 and holds the camera 24 with the optical axis of the camera 24 oriented toward the article space 30 is provided.
The housing 12 may surround the container 18 with the light blocking member.

本発明の態様において、
前記容器１８は、球体または多面体であってもよい。 In aspects of the invention
The container 18 may be a sphere or a polyhedron.

上記構成によれば、容器１８が球体または多面体であるため、容器１８の内部の任意の位置（例えば容器１８の中心位置）に対するカメラ２４の相対位置を特定しやすい。 According to the above configuration, since the container 18 is a sphere or a polyhedron, it is easy to identify the relative position of the camera 24 with respect to an arbitrary position inside the container 18 (for example, the center position of the container 18).

本発明の態様において、
前記容器１８は、半透明であってもよい。 In aspects of the invention
The container 18 may be translucent.

上記構成によれば、容器１８が半透明であるため、容器１８の外部の光を容器１８の内部の物品空間３０に向けて透過させることができ、その一方で、容器１８の外部がカメラ２４により撮影されることを防止することができる。 According to the above configuration, since the container 18 is translucent, the light outside the container 18 can be transmitted toward the article space 30 inside the container 18, while the outside of the container 18 is the camera 24. It is possible to prevent the image being taken by.

本発明の態様において、
前記容器１８は、複数の前記カメラ２４を保持してもよい。 In aspects of the invention
The container 18 may hold a plurality of the cameras 24.

上記構成によれば、様々な方向から撮影した物品４０の画像を取得することができ、更に互いに隣接するカメラ２４をステレオカメラとして使用することにより物品４０の立体的な画像を取得することができる。 According to the above configuration, images of the article 40 taken from various directions can be acquired, and a three-dimensional image of the article 40 can be acquired by using the cameras 24 adjacent to each other as a stereo camera. ..

本発明の態様において、
前記物品４０を下方側から支持するとともに高さ方向に変位自在である透明の支持部材２０を更に備えてもよい。 In aspects of the invention
A transparent support member 20 that supports the article 40 from below and is freely displaceable in the height direction may be further provided.

上記構成によれば、物品４０の高さ位置を調節することができるため、物品４０の大きさに関わらず、物品４０の中心と物品空間３０の中心とを略一致させることができる。また、上記構成によれば、支持部材２０が透明であるため、物品４０を全方向から撮影することができる。 According to the above configuration, since the height position of the article 40 can be adjusted, the center of the article 40 and the center of the article space 30 can be substantially aligned regardless of the size of the article 40. Further, according to the above configuration, since the support member 20 is transparent, the article 40 can be photographed from all directions.

本発明の態様において、
前記筐体１２は、立方体であり、
前記筐体１２の各面は、少なくとも１つの前記光源２２を保持してもよい。 In aspects of the invention
The housing 12 is a cube and
Each surface of the housing 12 may hold at least one light source 22.

上記構成によれば、物品４０の６面を照明することができるため、物品４０の表面に影が発生しにくくなる。 According to the above configuration, since the six surfaces of the article 40 can be illuminated, shadows are less likely to be generated on the surface of the article 40.

なお、本発明に係る物品撮影装置は、上述の実施形態に限らず、本発明の要旨を逸脱することなく、種々の構成を採り得ることはもちろんである。 It should be noted that the article photographing apparatus according to the present invention is not limited to the above-described embodiment, and of course, various configurations can be adopted without deviating from the gist of the present invention.

１２…筐体 １４…鏡体
１８…容器 ２０…支持部材
２２…光源 ２４…カメラ
３０…物品空間 ４０…物品 12 ... Housing 14 ... Mirror body 18 ... Container 20 ... Support member 22 ... Light source 24 ... Camera 30 ... Article space 40 ... Article

Claims (8)

物品を照明する複数の光源と、前記物品を撮影するカメラと、を備える物品撮影装置であって、
光を遮断する光遮断部材により前記物品が配置される物品空間を囲繞する筐体を備え、
少なくとも１組の前記光源は、前記物品空間を挟んで互いに対向する位置に配置される、物品撮影装置。 An article photographing device including a plurality of light sources for illuminating an article and a camera for photographing the article.
A housing that surrounds the article space in which the article is placed by a light blocking member that blocks light is provided.
An article photographing device in which at least one set of the light sources is arranged at positions facing each other across the article space. 請求項１に記載の物品撮影装置であって、
入射した光を散乱させる鏡体を前記筐体の内部に備え、
前記鏡体の鏡面は、前記物品空間に向けられる、物品撮影装置。 The article photographing apparatus according to claim 1.
A mirror body that scatters the incident light is provided inside the housing.
An article photographing device in which the mirror surface of the mirror body is directed to the article space. 請求項１または２に記載の物品撮影装置であって、
前記物品空間を囲繞し、また、前記カメラの光軸を前記物品空間に向けた状態で前記カメラを保持する容器を備え、
前記筐体は、前記光遮断部材により前記容器を囲繞する、物品撮影装置。 The article photographing apparatus according to claim 1 or 2.
A container that surrounds the article space and holds the camera with the optical axis of the camera oriented toward the article space is provided.
The housing is an article photographing device that surrounds the container with the light blocking member. 請求項３に記載の物品撮影装置であって、
前記容器は、球体または多面体である、物品撮影装置。 The article photographing apparatus according to claim 3.
An article photographing device in which the container is a sphere or a polyhedron. 請求項３または４に記載の物品撮影装置であって、
前記容器は、半透明である、物品撮影装置。 The article photographing apparatus according to claim 3 or 4.
The container is a translucent article photographing device. 請求項３〜５のいずれか１項に記載の物品撮影装置であって、
前記容器は、複数の前記カメラを保持する、物品撮影装置。 The article photographing apparatus according to any one of claims 3 to 5.
The container is an article photographing device that holds a plurality of the cameras. 請求項１〜６のいずれか１項に記載の物品撮影装置であって、
前記物品を下方側から支持するとともに高さ方向に変位自在である透明の支持部材を更に備える、物品撮影装置。 The article photographing apparatus according to any one of claims 1 to 6.
An article photographing apparatus further comprising a transparent supporting member that supports the article from the lower side and is freely displaceable in the height direction. 請求項７に記載の物品撮影装置であって、
前記筐体は、立方体であり、
前記筐体の各面は、少なくとも１つの前記光源を保持する、物品撮影装置。 The article photographing apparatus according to claim 7.
The housing is a cube and
An article photographing device in which each surface of the housing holds at least one of the light sources.
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