JP2003195394A - Outer periphery image recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shape recorder capable of photographing nearly the entire periphery of a photographing object without rotating the photographing object and capable of continuously photographing the photographing object in the longitudinal direction even if the photographing object is a long one. <P>SOLUTION: An outer peripheral image recorder has: a first reflection means 2 installed to surround the photographing place of the photographing object C; a second reflection means 3 receiving reflected light emitted from the first reflection means 2 at the prescribed position of the photographing object C in the longitudinal direction; and a photographing means 4 reflecting light received by means of the second reflection means 3 in the direction different from that of the first reflection means 2 to photograph the reflected light. The outer peripheral shape of the photographing object C is photographed and recorded. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer peripheral image recording apparatus for photographing and recording the outer peripheral shape of a cylindrical or cylindrical object to be photographed.

[0002]

2. Description of the Related Art A conventional peripheral image recording device is shown in FIG. 8, for example. This peripheral image recording device 9
0 is a cylindrical object (hereinafter referred to as the core) C
A camera 91 is installed above the core and the core C is rotated to photograph the entire circumference with a predetermined width.

Another conventional peripheral image recording apparatus is disclosed in, for example, Japanese Patent Laid-Open No. 2001-165637. In this outer peripheral image recording device, a cylindrical cylindrical mirror and a camera are arranged substantially coaxially, and a cylindrical object to be photographed on the inner peripheral surface of the cylindrical mirror is photographed by the camera.

[0004]

The conventional outer periphery image recording apparatus 90 shown in FIG. 8 has an advantage that it can capture the entire circumference of the core C, but captures the core C sampled by boring underground rock. In such a case, some cores C are soft and fragile, and when the core C is chucked and rotated, the shape of the outer peripheral surface to be photographed changes, and sometimes the core C is broken.

On the other hand, in the outer peripheral image recording apparatus disclosed in Japanese Unexamined Patent Publication No. 2001-165637, since the cylindrical mirror and the camera are coaxially arranged, the object to be photographed is moved in the axial direction to continuously photograph the object. In that case, there is a problem that the object to be photographed interferes with the camera, and the object to be photographed having a predetermined length or longer cannot be photographed.

The present invention has been made in consideration of such problems, and it is possible to photograph almost the entire circumference of an object to be photographed without rotating it, and further, even if the object to be photographed is a long object. The main object is to provide an outer peripheral image recording device that can continuously capture images in the longitudinal direction.

[0007]

In order to solve the above problems, the outer peripheral image recording apparatus according to the present invention employs the following means.

That is, as described in claim 1, the first reflecting means is installed so as to surround the photographing portion of the photographing object, and the first reflecting means is provided at a predetermined position in the longitudinal direction of the photographing object. And a photographing means for photographing the reflected light by reflecting the light received by the second reflecting means in a direction different from that of the first reflecting means. It is made by shooting and recording the shape.

In this means, the light from the object to be photographed set inside the first reflecting means is turned by the first reflecting means and reflected, and is provided in the longitudinal direction of the object to be photographed.
The second reflecting means changes the direction again and reflects the light, and the outer peripheral shape of the object to be photographed is photographed by the photographing means installed at a position where this light can be photographed.

Further, as described in claim 2, claim 1
In the outer peripheral image recording apparatus described above, the first reflecting means comprises a conical mirror.

In this means, the light from the object to be photographed hits the cone-shaped mirror and is reflected in the direction of the second reflecting means.

Further, as described in claim 3, claim 1
The outer peripheral image recording apparatus described above is characterized in that the first reflecting means comprises a cone-shaped half mirror, and an illuminating device that illuminates an object to be photographed through the half mirror is provided outside the half mirror.

According to this means, the illumination light from the illumination device provided outside the half mirror passes through the half mirror and illuminates the object to be photographed, whereby the light emitted from the object is a cone-shaped half mirror. It reflects in the direction of the second reflecting means.

Further, as described in claim 4, claim 1
The outer peripheral image recording device according to any one of
The reflecting means is composed of a plane mirror and is provided so as to be inclined with respect to the longitudinal direction of the object to be photographed.

In this means, the light reflected by the first reflecting means is reflected by the inclined plane mirror by changing its direction.

Further, as described in claim 5, claim 1
The outer peripheral image recording apparatus according to any one of 1 to 4,
The reflecting means is provided with a through hole through which the object to be photographed can pass.

With this means, the object to be photographed can be moved relative to the first reflecting means via the through hole.

Further, as described in claim 6, claim 1
The outer peripheral image recording device according to any one of 1 to 5,
The reflecting means is provided with a through hole through which the object to be photographed can pass.

With this means, the object to be photographed can be moved relative to the second reflecting means via the through hole.

That is, as described in claim 7, in the outer peripheral image recording apparatus according to any one of claims 1 to 6,
A scanning head unit incorporating the first reflecting unit, the second reflecting unit, and the photographing unit is configured to be movable relative to the object to be photographed, and the scanning head unit scans the object to be photographed in the longitudinal direction. It is characterized by

In this means, the first reflecting means, the second reflecting means and the photographing means are integrally incorporated so that they can be moved relative to the object to be photographed.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION A form of an outer peripheral image recording apparatus according to the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment (1) of an outer peripheral image recording apparatus according to the present invention.

In this embodiment, an outer peripheral image recording apparatus suitable for photographing and recording the outer peripheral shape of a core, which is a cylindrical inspection object obtained by boring a structure such as underground rock, is recorded over almost the entire circumference. The basic configuration is shown.

Here, the core C is often an unstable sample such as sedimentary soft rock having a low solidification degree and a high water content ratio, and it is necessary to quickly collect necessary data at the drilling site. There is something.

Peripheral image recording apparatus 100 of this embodiment
Is a first reflecting means 2 installed so as to surround a photographing location of the photographing object C, a second reflecting means 3 for receiving reflected light from the first reflecting means 2, and a second reflecting means 3. The image pickup means 4 for taking an image of the reflected light from and the illumination device 5 for illuminating the object C to be imaged are provided.

The first reflecting means 2 is a cone-shaped mirror, and here is a conical mirror 2. The conical mirror 2 includes a conical portion 21, a small-diameter portion 22, and a large-diameter portion 23, and is provided with a conical mirror surface (conical reflecting surface) 24 that reflects light on the inner surface (conical inner surface) of the conical portion 21. There is. Further, the small diameter portion 22 and the large diameter portion 23 are provided with through holes 25 and 26 through which the core C can pass. Also, the conical mirror surface 2
An optimum value of the cone angle α of 4 is determined by the distance L2 between the mirror 2 and the second reflecting means 3, and the like. The first reflecting means 2 is not limited to the conical shape, and may have another shape such as a parabolic shape.

The second reflecting means 3 is a plane mirror 3 and has a large diameter portion 23 of the mirror 2 so that the light from the core C reflected by the mirror 2 can be received at a predetermined position in the longitudinal direction of the core C.
It is provided on the side. The mirror surface 31 of the plane mirror 3 that reflects light is tilted with respect to the axis 1 of the core C by an angle θ with respect to the plane including the central axis 1 of the core C. Therefore, the light received by the plane mirror 3 is reflected in a direction different from that of the mirror 2. It is desirable that this angle θ be 45 degrees. Further, the plane mirror 3 is provided with a through hole 32 through which the core C can pass. The second reflecting means 3 is not limited to a plane mirror, and may be a concave mirror, for example.

The photographing means 4 is a small camera such as a CCD camera, and is provided in a direction perpendicular to the plane including the central axis 1 of the core C so that the reflected light from the plane mirror 3 can be photographed. The position of the camera 4 (distance L1 from the central axis 1 of the core C) is uniquely determined by the angle of view β of the camera, the cone angle α of the mirror 2, and the distance L2 between the mirror 2 and the plane mirror 3.

Peripheral image recording apparatus 100 having the above configuration
A method of photographing the inspection object (core) C by the method will be described below.

The outer peripheral image recording apparatus 100 is provided with a core support (not shown), and the core C sampled first is set on the core support. Then, when the core C is illuminated by the illumination device 5, the light 6 reflected in the vertical direction from the position P of the core C reaches the point Q on the conical mirror surface 24 of the mirror 2. Here, light is reflected, and the incident angle i is equal to the reflection angle i'according to the law of reflection. Therefore, the light 6 reflected by the conical mirror surface 24 (point Q) of the mirror 2 becomes like the reflected light 7. Reflect and proceed.

The reflected light 7 travels toward the plane mirror 3, and the plane mirror 3 also reflects the light. Since the incident angle j is equal to the reflection angle j'according to the law of reflection, the plane mirror 3
The light 7 reflected at point R is reflected and travels like reflected light 8. Thereby, the camera 4 can capture the reflected light 8.

Since the light 6 is emitted in the vertical direction from the entire circumference of the position P of the core C, the light 6'reflected at the point Q'on the conical mirror surface 24 of the mirror 2 is reflected as reflected light 7 '. Then, the light is reflected at the point R ′ of the plane mirror 3 as reflected light 8 ′.
In this way, the outer peripheral shape close to the entire circumference at the position P of the core C can be photographed. However, the light on the back side of the core C with respect to the camera 4 is blocked by the core 4, so that the photographable range is about 3/4 round.

Since the core C is mounted on the core support and moves in the horizontal direction at a speed that does not interfere with the photographing, the camera 4 captures continuous images in the longitudinal direction of the core 4.
The core C is fixed and the mirror 2, the plane mirror 3, the camera 4 are attached.
May be moved for each set.

The image photographed and recorded in this way can be reproduced and viewed, but it is converted into a developed image by using an image developing device (not shown). For example, the horizontal direction is the circumferential direction and the vertical direction is the vertical direction. Can be output on the photographic paper in the longitudinal direction of the core C. This makes it possible to easily investigate and analyze the core C. The principle of creating a developed image is as follows.

When the image of the camera is converted from analog to digital and developed on the first frame memory (not shown), the image can be handled for each pixel. Now, capture the image of the camera into the first frame memory,
When the pixel group corresponding to the circumference of the circle is sequentially fetched from the position P as a starting point and rearranged as a line of images in the second frame memory (not shown), the core C corresponding to the circumference is obtained.
A developed image of is obtained. Then, the core C is slightly moved to arrange the developed images, and continuous developed images of the core C are obtained. More specifically, the sensor detects the minute movement distance of the core support, and the electric signal generated therewith is used as a trigger signal to capture the image of the camera into the first frame memory as described above. Pixel groups corresponding to the circumference are sequentially taken in, rearranged as a row of images in the second frame memory, a developed image is created and displayed (visible on a monitor), and digitally recorded on a magnetic tape.

Not only the outer shape data but also the core C
Since other data (for example, magnetic susceptibility, core diameter, reflectivity, etc.) are also measured at the same time by other methods, those data will be stored together.

According to this embodiment, the light 6 from the object C to be photographed set inside the conical mirror 2 is reflected by the conical mirror 2 to change its direction, and the length of the object C to be photographed is changed. Since the light is reflected by the plane mirror 3 tilted in the direction and redirected again, the outer peripheral shape of the object C is photographed by the photographing means 4 installed at a position where the light 8 can be photographed. By moving the object C to be imaged relatively in the horizontal direction without rotating it, almost the entire circumference can be imaged.

Since the object C to be photographed is movable relative to the conical mirror 2 and the plane mirror 3 via the through holes 25, 26, 32, the object C to be photographed is a long object. However, it is possible to continuously shoot in the longitudinal direction.

It is obvious that the same action and effect can be obtained by moving the set of the mirror 2, the plane mirror 3 and the camera 4 while fixing the object C to be photographed.

Further, the plane mirror 3 which is the second reflecting means 3
Is placed on the side of the object to be photographed C without penetrating the object to be photographed C, the weight-shaped mirror 2 which is the first reflecting means 2 is tilted in accordance with the position of the plane mirror 3, and the position of the image taking means 4 is changed. Even by shifting, it is possible to take time and effort to adjust the position of each part and create a developed image.

FIG. 4 shows an embodiment (2) of the outer peripheral image recording apparatus according to the present invention.

In the outer peripheral image recording apparatus 200, the first reflecting means 2 is a cone-shaped half mirror 2 in comparison with the embodiment (1), and the illumination device 5 is outside the half mirror 2 and outside the cone shape. The change is that it is provided on the extension. Others are the same.

The half mirror 2 has a conical shape here. The half mirror 2 not only reflects light,
It is a mirror that allows light to pass by a predetermined amount (transmittance). Therefore, when the illumination device 5 is provided outside the conical half mirror 2, the light from the illumination device 5 can pass through the half mirror 2 and illuminate the core C.

The illumination device 5 is provided with a ring-shaped one outside the half mirror 2 so as to surround the half mirror 2. This allows light to pass through the half mirror and uniformly illuminate the entire circumference of the core C.

When the core C is set on the outer peripheral image recording device 200 and illuminated by the illuminating device 5, the light passing through the half mirror 1 strikes the core C vertically, so that a shadow is produced even if the core C has partial irregularities. It is possible to illuminate the entire circumference without causing it.

The light 6 from the core C is reflected by the half mirror 2 and the plane mirror 3 and is photographed by the camera 4 as described in the embodiment (1).

According to this embodiment, in addition to the same actions and effects as those of the above-mentioned embodiment (1),
Illumination light from the illumination device 5 provided outside the half mirror 2 passes through the half mirror 2 and illuminates the core C, whereby the light emitted from the core C is directed to the plane mirror 3 by the conical half mirror 2. Since it is made to reflect, it is possible to illuminate the entire circumference without creating a shadow, and a clearer core C
It is possible to photograph the outer peripheral shape of the.

FIGS. 5 to 6 show an embodiment (3) of the outer peripheral image recording apparatus according to the present invention.

This peripheral image recording device 300 is a device in which the basic construction of the embodiment (2) is made more concrete, and the core C is fixed and the first reflecting means 2 and the second reflecting means 2 are provided.
The reflecting means 3 and the photographing means 4 are moved.

In this outer peripheral image recording apparatus 300, a scanning head portion 9 incorporating a half mirror 2, a plane mirror 3 and a camera 4 is movable with respect to a core C. The core C is mounted on the core supporting base 10, and the core supporting base 10 has a shape capable of stably mounting the core C. Both ends of the core support base 10 are supported and attached to the apparatus main body 11.

Further, the scanning head portion 9 is movable by being guided by the two guide rails 13 by the moving mechanism 12. The moving mechanism 12 includes a motor 121, a bearing 122, a rotation / linear motion converting mechanism 123, and a shaft 1.
It is composed of 24 and is attached to the apparatus main body 11.

An operation panel 14 is provided on the main body 11 of the apparatus, and various SWs such as a power source, a shooting start SW and an end SW are attached to the apparatus main body 11 so that shooting can be automatically performed. In addition, the caster 15 and the fixing member 16 of the apparatus main body 11
And so on.

When the core C is set in the outer peripheral image recording apparatus 300 and the photographing start SW is pressed, the scanning head unit 9 moves on the guide rail 13 to scan the core C in the longitudinal direction. At that time, since the half mirror 2 is provided with the through holes 25 and 26 and the plane mirror 3 is provided with the through hole 32, the scanning head portion 9 can be freely moved.

According to this embodiment, in addition to the same actions and effects as those of the above-mentioned embodiment (2),
Since the half mirror 2, the plane mirror 3, and the photographing means 4 are integrally incorporated so as to be movable relative to the core C, the photographing of the core C can be performed more easily.

The scanning head unit 9 may be fixed and the core C may be moved.

FIG. 7 shows an embodiment (4) of an outer peripheral image recording apparatus according to the present invention.

The outer peripheral image recording apparatus 400 is an apparatus applicable to a subject C having a prismatic shape.
This embodiment is different from the embodiment (2) in that the first reflecting means 2 is a quadrangular pyramid-shaped half mirror 2 and a plurality of lighting devices 5 are provided in a linear shape, and the other is the embodiment (2). It is almost the same as.

The first reflecting means 2 has a quadrangular pyramid portion 21.
A small-diameter portion 22 and a large-diameter portion 23.
The inner surface (the inner surface of the cone) is provided with a quadrangular pyramid mirror surface (a quadrangular pyramid reflecting surface) 24 that reflects light. The small diameter portion 22 and the large diameter portion 23 have through holes 25 and 26 through which the object C to be photographed can pass.
Is provided.

The second reflecting means 3 is the same plane mirror 3 as in the embodiment (2), but the through hole 32 of the plane mirror 3 has a quadrangle according to the shape of the object C to be photographed.

The illumination device 5 is provided with three linear devices that surround the half mirror 2 outside the half mirror 2. Thereby, it is possible to uniformly illuminate the entire circumference of the object C to be photographed.

According to this embodiment, in addition to the same operation and effect as those of the above-mentioned embodiment (2),
It is possible to continuously image the three surfaces of the long prism-shaped object C to be imaged. There are various types of long rectangular prism-shaped imaging objects C, such as H-section steel and wood for construction, and the peripheral image recording device 400 can be used as an inspection device for those production sites.

Although common to the embodiments (1) to (3), the object to be imaged C is not limited to a core obtained by boring underground tissue, and most objects having a cylindrical or cylindrical shape, for example, , Various bottles and cans, water pipes, rolled steel, etc.
Obviously, it can be used as an inspection device for defects of products flowing on a belt conveyor.

[0064]

As described above, in the outer peripheral image recording apparatus according to the present invention, the light from the object to be photographed set inside the first reflecting means is reflected by the first reflecting means by changing its direction. , The second reflecting means provided in the longitudinal direction of the object to be imaged changes its direction and is reflected again, so that the outer peripheral shape of the object to be imaged is imaged by the imager installed at a position where this light can be imaged. Therefore, there is an effect that almost the entire circumference can be photographed by relatively moving the subject in the horizontal direction without rotating the subject.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment (1) of an outer peripheral image recording apparatus according to the present invention.

FIG. 2 is a sectional view showing an embodiment (1) of an outer peripheral image recording apparatus according to the present invention.

FIG. 3 is an enlarged cross-sectional view of a main part showing an embodiment (1) of an outer peripheral image recording apparatus according to the present invention.

FIG. 4 is a sectional view showing an embodiment (2) of the outer peripheral image recording apparatus according to the present invention.

FIG. 5 is a front view showing an embodiment (3) of the outer peripheral image recording apparatus according to the present invention.

6 is a sectional view taken along line XX of FIG. 5, showing an embodiment (3) of the outer peripheral image recording apparatus according to the present invention.

FIG. 7 is a perspective view showing an embodiment (4) of an outer peripheral image recording apparatus according to the present invention.

FIG. 8 is a perspective view showing a conventional peripheral image recording device.

[Explanation of symbols]

1 central axis 2 First reflection means (mirror) 3 Second reflection means (plane mirror) 4 Photography means (camera) 5 Lighting means 6 light 7 reflected light 8 reflected light 9 Scanning head section 10 core support 11 Device body 12 Moving mechanism 13 Guide rail 14 Operation panel 100 peripheral image recording device 200 Peripheral image recording device 300 peripheral image recording device

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G03B 15/02 G03B 15/02 C 17/17 17/17 H04N 5/225 H04N 5/225 Z F term ( Reference) 2H042 DB00 DB01 DD04 DD09 DE09 2H087 KA12 TA04 TA06 TA08 2H101 FF05 FF08 5C022 AA01 AB15 AB68 AC21 AC42 AC51 CA02

Claims (7)

[Claims] 1. A first reflecting means installed so as to surround a photographing location of an object to be photographed, and a second reflecting means for receiving reflected light from the first reflecting means at a predetermined position in the longitudinal direction of the object to be photographed. Means and a photographing means for photographing the reflected light by reflecting the light received by the second reflecting means in a direction different from that of the first reflecting means, and photographing and recording the outer peripheral shape of the photographing target. Recording device. 2. The outer peripheral image recording apparatus according to claim 1, wherein the first reflecting means is a conical mirror. 3. The outer peripheral image recording apparatus according to claim 1, wherein the first reflecting means is a cone-shaped half mirror,
An outer peripheral image recording device, comprising an illuminating device that passes through the half mirror and illuminates an object to be photographed outside the half mirror. 4. The outer peripheral image recording apparatus according to claim 1, wherein the second reflecting means is a plane mirror,
An outer peripheral image recording apparatus, which is provided so as to be inclined with respect to a longitudinal direction of an object to be photographed. 5. The outer peripheral image recording apparatus according to claim 1, wherein the first reflecting means has a through hole through which an object to be photographed can pass. 6. The outer peripheral image recording apparatus according to claim 1, wherein the second reflecting means has a through hole through which an object to be photographed can pass. 7. The outer peripheral image recording apparatus according to claim 1, wherein the scanning head part incorporating the first reflecting means, the second reflecting means, and the photographing means is relative to the object to be photographed. An outer peripheral image recording apparatus, which is configured to be movable and in which a scanning head unit scans an object to be photographed in a longitudinal direction thereof.