JP3209658B2 - Face observation record creation device and face observation record creation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a face observation record creation apparatus and a face observation record creation method suitable for observing deformation of ground at a face.

[0002]

2. Description of the Related Art Conventionally, in a face formed by excavation of a tunnel, the degree of deformation of the ground at the face in a predetermined time period until the lining is constructed is grasped. He was monitoring the stable state of the ground. Further, the degree of deformation of the ground at the face is grasped by the degree of movement of the position of a crack or the like generated on the surface of the face. In other words, the degree of deformation of the ground at the face is grasped by sketching cracks or the like generated on the surface of the face by a free hand or the like at a predetermined time, creating an observation record, and creating the observation record at a predetermined time. By comparing observation records with each other, the degree of movement of the position of the crack was determined.

[0003]

According to the method of creating an observation record by sketching a face by freehand or the like, skill is required to create an accurate observation record, and the sketching work is complicated. Recently, a method has been proposed in which a face is photographed by a digital still camera and an observation record of the face is created based on the digital photographic image. By the way, in order to accurately grasp the degree of deformation of the ground at the face, a plurality of observation records to be compared with each other, that is, a plurality of observation records created at predetermined time intervals, each face the face in a certain direction. And from the position. Therefore, in the recently proposed method, in order to set the direction and position of photographing when photographing a face every predetermined time, to always have a constant direction and position in each photographing, in each photographing, It is conceivable to apply a method of always setting the camera in a fixed direction and position, but it has been difficult to set the direction and position of the camera accurately. In view of the above circumstances, the present invention, regardless of the difference in the direction and position of setting the camera, can always accurately grasp the observation record of the face viewed from a certain direction and position, that is, the degree of deformation of the ground, It is an object of the present invention to provide a face observation record creation device and a face observation record creation method that can easily create an accurate observation record.

[0004]

According to a first aspect of the present invention, a face approximate plane (KH) is formed at a predetermined position with respect to a tunnel face (43), and a positional relationship between the faces is known. The reference points (KT1 to KT5) are marked on the face approximate plane (KH), and the tunnel face (43) is marked.
With a predetermined camera focus (CF) and a shooting plane (SH1)
The camera coordinates (CZ) at which the is formed are transferred to the tunnel face (4).
3) The face is photographed on the photographing plane (SH1) together with the plurality of reference points in a form set for the face, and a face observation record (KK) is created based on the photographed image (SG1) obtained by photographing. In the observation record creation device (1), the face observation record creation device (1) includes an image storage unit (11) capable of storing the photographic image (SG1), and the image storage unit (11).
And the positional relationship between the plurality of reference point images (KZ1 to KZ5) in the photographic image (SG1) and the camera focal point (CF), and the plurality of reference points (KT1 to KT5).
The camera coordinates (CZ) based on the mutual positional relationship
A correction plane setting unit (7) for calculating and setting a correction plane (SH2) parallel to the face approximation plane (KH).
a), a photographic image (S) on the photographing plane (SH1) is provided.
G1) is provided with a projection conversion control unit (7b) for projecting and transforming the correction plane (SH2) calculated and set by the correction plane setting unit (7a) around the camera focal point (CF). An output unit (6) for outputting the photographic image (SG2) to the outside as a face observation record (KK) is provided. According to a second aspect of the present invention, when creating a face observation record (KK) for a tunnel face (43) in which a face approximate plane (KH) is formed at a predetermined position with respect to the tunnel face (43), With respect to the face approximate plane (KH), a plurality of reference points (K
T1 to KT5) and mark the tunnel face (4
3) and the plurality of reference points are set to a predetermined camera focus (C
F) and a plurality of reference point images in a photograph image (SG1) obtained by photographing on the photographing plane (SH1) by setting camera coordinates (CZ) on which the photographing plane (SH1) is formed. (KZ1 to KZ5) and the camera focus (CF)
And the plurality of reference points (KT1 to KT1).
5) The camera coordinates (C
Z), a correction plane (SH2) parallel to the face approximation plane (KH) is calculated and set, and the photographic image (SG1) on the photographing plane (SH1) is centered on the camera focal point (CF). Correction plane (SH2) calculated and set
To create a face observation record (KK). According to a third aspect of the present invention, in the face observation record creating method according to the second aspect, the plurality of reference points (KT1 to KT5) with respect to the face approximate plane (KH) are provided.
Are marked on the tunnel face (43) with a plurality of reference points (KT1 to KT5) whose positional relationship is known.
The method is characterized in that the tunnel support (45) marked with is marked and placed on the approximate face (KH) of the face. According to a fourth aspect of the present invention, in the face observation record creating method according to the second aspect of the present invention, a plurality of images of the tunnel face (43) on which the face approximate plane (KH) is set are taken at predetermined times (T). The tunnel face (43) is recorded over time based on a plurality of photographic images (SG1) obtained by performing the photographing a plurality of times. In addition,
The numbers and the like in parentheses indicate the corresponding elements in the drawings for convenience, and therefore, the present description is not limited to the description on the drawings. The same applies to the following “action” column.

[0005]

According to the first and second aspects of the present invention, the correction plane (SH2) is always parallel to the face approximation plane (KH) irrespective of the set position of the camera coordinates (CZ) at the time of photographing. And therefore the correction plane (SH
The photographic image (SG2) projectively transformed to 2) is always an orthographic image with respect to the face approximation plane (KH). Since the face approximate plane (KH) is formed at a predetermined position with respect to the tunnel face (43), the photographic image (SG2) projected and converted to the correction plane (SH2) is always the tunnel face (43). Becomes equal to an image taken from a certain direction.
In the third aspect of the present invention, a plurality of reference points (KT
1 to KT5) are marked on the tunnel support (45) that is not easily deformed due to a change in the ground pressure or the like, and the positional relationship between these reference points (KT1 to KT5) is hard to change due to a change in the ground pressure or the like. Further, in the fourth aspect of the present invention, the face observation record (KK) every predetermined time (T)
Are the tunnel face (43) viewed from a certain direction and position, respectively.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an example of a face observation device according to the present invention. FIG. 2 is a diagram showing a display of the face observation device shown in FIG. 1. FIG. Schematic diagram showing the positional relationship such as,
FIG. 4 is a diagram showing the vicinity of the face, FIG. 5 is a schematic diagram showing a plane of the approximate face of the face, a correction plane, and the positional relationship of the light beam and the like in FIG. 3, and FIG. FIG. 3 is a diagram showing a display of the device.

As shown in FIG. 4, a tunnel excavation site 40 has a tunnel 42 under construction which is constructed by excavating a ground 41 in a substantially horizontal direction. Are formed. An arch-shaped support 45 is installed near the face 43 in the tunnel 42, and no lining or the like has been constructed in the tunnel 42 near the face 43. Further, the surface of the face 43 is in a state close to a vertical plane, and the face approximate plane KH, which is a vertical plane close to the surface, is located at a predetermined position ( For example, it is set at a position separated by about 50 cm from the vertical plane on which the surface of the face 43 is approximated). Furthermore,
The shoring 45 is provided such that a side surface 45a of the shoring 45 opposite to the face 43 is disposed on the face approximate plane KH. Reference points KT1, KT2, and KT3 are marked near both lower end positions and near the upper end position of the arch, respectively. A suitable straight brace 46 is provided between the reference points KT1 and KT3 and between the reference points KT2 and KT3.
A and 46B (or tensioned ropes or the like) are installed, and reference points KT4 and KT5 are marked on the braces 46A and 46B, respectively. That is,
Since the side surface 45a of the support 45 is disposed on the approximate face KH, the reference points KT1 to KT5 are set with respect to the approximate face KH. In addition,
The distance between the reference points KT1, KT4 and the reference points KT4, KT3
The ratio between the distances is a known ratio Q1, reference points KT2 and KT5.
The ratio between the distance between the reference points KT5 and KT3 is a known ratio Q2, and the distance between the reference points KT1 and KT3 is a known distance P1.

In the tunnel 42, as shown in FIG.
A face observation device 1 according to the present invention is installed, and as shown in FIGS. 1 and 4, the face observation device 1 includes a control unit 2 and a camera 12 which is a known digital still camera. That is, the control unit 2 has a main control unit 3, and the main control unit 3 has an input unit 5, an output unit 6, an image correction unit 7, an image processing unit 9, and a display unit 10 via a bus line 3a. , And a memory unit 11 are connected. Note that the image correcting means 7 is provided with a correction plane setting section 7a and a projection conversion control section 7b, and the display means 10 is provided with a display control section 1
0a is provided. A display 10b is connected to the display controller 10a.
1 is connected to the camera 12.

[0009] Tunnel excavation site 40 and face observation device 1
Is configured as described above, a face observation record KK for the face 43 of the tunnel excavation site 40 is created using the face observation device 1, and the ground surface 41 in the face 43 is created based on the face observation record KK. In order to grasp the degree of deformation per time, the following is performed. That is, the first face observation record creation operation is performed. First, near the face 43 in the tunnel 42, as shown in FIG. 4, the camera 12 of the face observation device 1 captures an image of the face 43 (and the support 45 installed adjacent to the face 43). The photograph image SG1 which is a digital photograph image of the photographed face 43 is transmitted to the memory unit 11 of the control unit 2 and stored therein. Next, an operator (not shown) inputs an image display command through the input unit 5. The instruction is sent to the main control unit 3 via the bus line 3a.
The main control section 3 transmits the photographic image SG1 stored in the memory section 11 to the display control section 10a of the display means 10 based on the command. The display control unit 10a displays the photographic image SG1 on the display 10b as shown in FIG.
Is displayed as a planar visible image.

After the display, an operator (not shown) looks at the display 10b and obtains reference point images KZ1 to KZ5, which are images of the reference points KT1 to KT5 included in the photographic image SG1.
Is searched, and the display 10b is operated by operating the input unit 5.
A photograph image SG1 of these reference point images KZ1 to KZ5 is provided via a cursor 20 (shown in FIG. 2) which can be freely moved on the display 10b and can designate an arbitrary point on the display 10b.
Input of the position in. In addition to the designation input of the positions of the reference point images KZ1 to KZ5, the reference point KT
1, the ratio Q1 of the distance between KT4 and the distance between the reference points KT4 and KT3, the distance between the reference points KT2 and KT5, and the reference point KT
5. The ratio Q2 of the distance between KT3 and the distance P1 between the reference points KT1 and KT3 are input by operating the input unit 5 using numerical values or the like. The input positions of the reference point images KZ1 to KZ5, the ratios Q1, Q2, and the distance P1 are transmitted to the correction plane setting unit 7a of the image correction unit 7.

As shown in FIG. 3, the camera 12 is provided with predetermined camera coordinates CZ having a specific positional relationship with respect to the shooting direction and position. Camera focus CF and shooting plane SH1
Are formed. Therefore, the photographing of the face 43 is performed in such a manner that the camera coordinates CZ are set for the face 43, and the photographic image SG1 obtained by the photographing is projected on the photographing plane SH1 around the camera focal point CF. It is a statue. Further, since the positional relationship between the camera focal point CF at the camera coordinates CZ and the photographing plane SH1 (which is known as described above) is input in advance to the correction plane setting unit 7a, Reference point image KZ1
The positions of the reference point images KZ1 to KZ5 at the camera coordinates CZ and the camera focal point CF are known in the correction plane setting unit 7a by inputting the positions of the images .about.KZ5 in the photographic image SG1 (therefore, the positions on the photographing plane SH1). Becomes Further, the camera focal point CF and each of the reference point images KZ1 to KZ
It is known that the light beams L1 to L5, which are straight lines connecting the reference point images 5 and 5, pass through the reference points KT1 to KT5 corresponding to these reference point images KZ1 to KZ5, respectively, as shown in FIG. At 7a, the following operation is performed.
That is, first, the camera focal point CF existing on the same plane
And, for the light beams L1, L4, L3, the light beams L1, L4
On L4, L3, as shown in FIG.
Points X1, X4, and X3 that are movable on L3 are set. Next, a point X4 connects a line segment connecting the points X1 and X3 to the ratio Q
1 and the distance P1 (ie,
The positions of the points X1, X4, X3 are set to the reference point image KY1, so that the distance of the line connecting the points X1, X3 has a predetermined scale R1 with respect to the distance of the line connecting the reference points KT1, KT3). K
Determined as Y4, KY3. That is, the reference point KT4 is
As described above, since the line segment connecting the reference points KT1 and KT3 is divided by the ratio Q1, the reference point image KY4
Is a line segment connecting the reference point images KY1 and KY3 to the ratio Q1.
, The reference points KT1, KT
4, a straight line connecting KT3 and reference point images KY1, KY4, K
The straight line connecting Y3 is a straight line parallel to each other. After determining the reference point images KY1, KY4, and KY3, the correction plane setting unit 7a similarly performs the light fluxes L2, L5 for the camera focal point CF and the light fluxes L2, L5, L3 existing on the same plane. , L3, points X2, X5, and X3 that are movable on the light beams L2, L5, and L3 are set (not shown).
Next, the point X5 becomes a state in which the line segment connecting the points X2 and X3 is divided by the ratio Q2, and the positions of the points X2, X5 and X3 are set as the reference so that the point X3 coincides with the reference point image KY3. The point images are determined as KY2, KY5, and KY3. That is, the reference point KT5 is, as described above, the reference point KT2,
Since the line segment connecting KT3 is a point that is divided by the ratio Q2, the reference point image KY5 is a point that divides the line segment connecting the reference point images KY2 and KY3 by the ratio Q2. A straight line connecting KT2, KT5 and KT3 and the reference point image K
The straight line connecting Y2, KY5, and KY3 is a straight line parallel to each other.

Next, the correction plane setting unit 7a sets a plane including all the determined reference point images KY1 to KY5 on the camera coordinates CZ as a correction plane SH2. by the way,
A line segment connecting the reference points KT1, KT4, KT3 and a line segment connecting the reference points KT2, KT5, KT3 are included in the face approximation plane KH, and the reference points KT1, KT4, KT3
Reference point images KY1, KY4, KY3 parallel to the line segment connecting
And the line segment connecting the reference point images KY2, KY5, KY3 parallel to the line segment connecting the reference points KT2, KT5, KT3 are included in the correction plane SH2. The correction plane SH2 is parallel to each other. Next, the projective transformation control unit 7b performs projective transformation of each point of the photographic image SG1 on the photographing plane SH1 onto the modification plane SH2 with the camera focal point CF as the projection center, and converts the photographic image SG2 onto the modification plane SH2. Form. After the formation, the projection conversion control unit 7b transmits the photographic image SG2 to the display control unit 10a, and the display control unit 10a displays the photographic image SG2 on the display 10b as shown in FIG. Since the face approximate plane KH and the correction plane SH2 are parallel to each other, the photographic image SG2 on the correction plane SH2 is
(That is, the surface of the face 43 is assumed to exist approximately on the face approximate plane KH), which is substantially the same as the image taken from the front direction. Further, for the distance P1 between the reference points KT1 and KT3 on the face approximate plane KH, the photographic image SG
2 (that is, the reference point images KY1 and KY on the correction plane SH2)
Since the distance between the three is reduced by the predetermined scale R1, the photographic image SG2 is reduced in scale by using the face 43 (that is, the surface of the face 43 that is assumed to be approximately in the face approximate plane KH). An image reduced by R1 is obtained.

After the display, an operator (not shown) inputs an image processing command via the input unit 5. In response to the instruction, the image processing unit 9 causes the photographic image SG2 displayed on the display 10b to appear in the photographic image SG2 by a known image processing method, for example, due to a difference in shading or contrast between the images on the display 10b. Cracks 47 on face 43
Is detected and the crack image 47a is clearly displayed (or the crack image 47 shown on the display 10b by using a known handwriting input unit or the like, not shown).
The crack image 47a may be displayed sharply by tracing a. ). Thereafter, an operator (not shown) inputs an output command through the input unit 5. According to the command, the output unit 6 outputs the photographic image SG2 on which the image processing has been performed to the outside as a face observation record KK in the form of a printout or the like. With the output, the creation of the first face observation record KK was completed.

The second, third,... Face observation record creation operations are sequentially performed. That is, in the n-th (n is an integer of 2 or more) face observation record creation operation, first, the face 43
Is photographed by the camera 12. The photographing is performed after a predetermined time T has elapsed from the photographing by the camera 12 in the (n-1) th face observation record creation operation. In other words, the photographing in each face observation record creation operation is performed every predetermined time T. Next, the positional relationship between the reference point images KZ1 to KZ5 and the camera focal point CF and the positional relationship between the reference points KT1 to KT5 in the photographed image SG1 obtained in the same manner as in the first face observation record creation operation. , A correction plane SH2 parallel to the face approximation plane KH is calculated and set at the camera coordinates CZ, and the photographic image SG1 on the photographing plane SH1 is calculated centering on the camera focal point CF and the correction plane SH2 calculated and set. To a photograph image SG2, and the photograph image SG2 is output as a face observation record KK. After a plurality of face observation record creation operations are created as described above, a plurality of face observation records KK for each predetermined time T
Are compared with each other, the degree of movement of the position of the crack 47 is measured, and the degree of deformation of the ground 41 at the face 43 is estimated and grasped based on the degree of movement. That is, by grasping the degree of deformation of the ground 41 at the face 43 per predetermined time T, the ground 4 at the face 43 is determined.
1 is monitored for stability. Since the plurality of face observation records KK for each predetermined time T are all represented in the form of a photographic image SG2 substantially equal to an image of the face 43 taken from a certain direction, the direction in which the camera 12 is set at the time of shooting is set. Irrespective of the difference in position and position, the face observation record KK that always looks at the tunnel face from a fixed direction and position can be easily created, and the degree of deformation of the ground 41 per hour can be accurately grasped.

[0015]

As described above, according to the first aspect of the present invention, the face approximating plane such as the face approximating plane KH is used for the face 43.
The reference points such as a plurality of reference points KT1 to KT5, which are formed at predetermined positions with respect to the tunnel face and have a known positional relationship with each other, are marked on the face approximate plane, and the tunnel face is set at a predetermined position. Camera coordinates such as camera focal point CF and the like and camera coordinates CZ and the like at which a photographing plane such as the photographing plane SH1 is formed are set on the photographing plane together with the plurality of reference points in such a manner as to be set for the tunnel face. And
In a face observation record creation device for creating a face observation record such as a face observation record KK based on a photograph image such as a photograph image SG1 obtained by photographing, the face observation record creation device is a memory unit capable of storing the photograph image 11 and the like, and a positional relationship between a plurality of reference point images such as KZ1 to KZ5 in the photographic image stored in the image storage unit and the camera focus, and the plurality of reference points. A correction plane setting unit such as a correction plane setting unit 7a for calculating and setting a correction plane such as a correction plane SH2 parallel to the face approximation plane in the camera coordinates based on the mutual positional relationship is provided. A projection conversion control unit such as a projection conversion control unit 7b for projecting a photographic image on a plane into a correction plane calculated and set by the correction plane setting unit around the camera focal point is provided. Since the output unit such as the output unit 6 which outputs the converted photographic image such as the photographic image SG2 to the outside as a face observation record is provided, the correction plane is always set regardless of the setting position of the camera coordinates at the time of shooting. The plane is parallel to the face-approaching plane, so that the photographic image projectively transformed to the correction plane is always an orthographic image to the face-approaching plane. In addition, since the face approximating plane is formed at a predetermined position with respect to the tunnel face, the photographic image projected and converted to the correction plane is always equal to an image obtained by photographing the tunnel face from a certain direction. That is, the camera 1 at the time of shooting
Regardless of the difference in the direction and position of setting 2, the face observation record that always saw the tunnel face from a fixed direction and position,
That is, an accurate face observation record that can accurately grasp the degree of deformation per hour of the ground 41 can be easily created.

A second aspect of the present invention is a face such as a face observation record KK of a tunnel face in which a face approximate plane such as a face approximate plane KH is formed at a predetermined position with respect to a tunnel face such as the face 43. When creating an observation record, a plurality of reference points such as a plurality of reference points KT1 to KT5 whose relative positions are known are marked on the approximate face of the face, and the tunnel face and the plurality of reference points are determined by a predetermined number. A photograph image SG1 or the like obtained by photographing and photographing on the photographing plane in such a manner that a camera focal point such as a camera focal point CF and a camera coordinate plane such as a camera coordinate plane CZ on which a photographing plane such as a photographing plane SH1 is formed are set. Reference point images KZ1 to KZ in the photographic image of
A positional relationship between a reference point image such as Z5 and the camera focus;
Based on the positional relationship between the plurality of reference points, a correction plane such as a correction plane SH2 parallel to the face approximation plane is calculated and set in the camera coordinates, and the photographing plane is centered on the camera focal point. Since the above photographic image is configured to projectively transform the calculated and set correction plane to create a face observation record, the correction plane is always a face approximate plane regardless of the set position of the camera coordinates at the time of shooting. Therefore, the photographic image projectively transformed to the correction plane is always an orthographic image to the face approximation plane. In addition, since the face approximating plane is formed at a predetermined position with respect to the tunnel face, the photographic image projected and converted to the correction plane is always equal to an image obtained by photographing the tunnel face from a certain direction. That is, regardless of the difference in the direction and position of setting the camera 12 at the time of photographing, the face observation record in which the tunnel face is always viewed from a fixed direction and position, that is, the degree of deformation per hour of the ground 41 is accurately grasped. An accurate face observation record that can be created is easily created.

According to a third aspect of the present invention, in the face observation record creating method according to the second aspect, the marking of the plurality of reference points with respect to the approximate face of the face has a known positional relationship with respect to the tunnel face. Since a plurality of reference points are marked by installing a tunnel support such as a supporter 45 on which a plurality of reference points are marked, the plurality of reference points are located on the approximate plane of the face. Is marked on the tunnel support that is not easily deformed due to a change in the ground pressure. Therefore, the positional relationship between these reference points is unlikely to change due to a change in the ground pressure or the like. That is, in addition to the effect of the second invention, the reliability of the known positional relationship between the plurality of reference points is further improved, so that the reliability of the obtained face observation record is further improved.

According to a fourth aspect of the present invention, in the face observation record creating method according to the second aspect of the present invention, photographing of the tunnel face on which the approximate face of the face is set is performed a plurality of times every predetermined time T or the like. Based on a plurality of photographic images obtained by taking a plurality of times, a time-dependent face observation record of the tunnel face is created, so that the face observation record at a predetermined time interval is calculated by the tunnel The face is viewed from a certain direction or position. Therefore, in addition to the effect of the second invention, the ground 41 in the tunnel face
The degree of deformation per hour is
A more accurate grasp can be obtained by comparing the face observation records of the tunnel face viewed from a certain direction and position with each other.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of a face observation device according to the present invention.

FIG. 2 is a view showing a display of the face observation device shown in FIG. 1;

FIG. 3 is a schematic diagram showing a positional relationship between a camera coordinate and a face approximation plane at the time of camera photographing;

FIG. 4 is a view showing the vicinity of a face;

FIG. 5 is a schematic plan view showing a positional relationship between a face approximating plane, a correction plane, a light beam, and the like in FIG. 3;

FIG. 6 is a view showing a display of the face observation device shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Face observation record creation apparatus (face observation apparatus) 6 ... Output part 7a ... Correction plane setting part 7b ... Projection conversion control part 11 ... Image storage part (memory part) 43 ... Tunnel face (face) 45: Tunnel support (support) CF: Camera focus CZ: Camera coordinates KH: Face approximation plane KK: Face observation record KT1 to KT5 Reference point KZ1 to KZ5 Reference point image SG1 Photographic image SG2: Photographic image SH1: Photographing plane SH2: Modified plane T: Time

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-3145 (JP, A) JP-A-6-94455 (JP, A) JP-A 5-99670 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) G01C 7/06 E21D 9/06 301 G01C 15/04 G06T 7/00

Claims (4)

(57) [Claims] 1. A face approximating plane is formed at a predetermined position with respect to a tunnel face, a plurality of reference points whose positional relationship is known are marked on the face approximating plane, and the tunnel face is set at a predetermined position. In the form of setting a camera focal point and a camera coordinate on which a shooting plane is formed with respect to the face, shooting is performed on the shooting plane together with the plurality of reference points, and a face observation record is recorded based on a photographic image obtained by shooting. In the face observation record creation device to be created, the face observation record creation device has an image storage unit capable of storing the photographic image, and the plurality of reference point images in the photographic image stored in the image storage unit and the A correction plane setting for calculating and setting a correction plane parallel to the face approximation plane in the camera coordinates based on a positional relationship with a camera focus and a positional relationship between the plurality of reference points. A projection conversion control unit for projectively transforming the photographic image on the photographing plane to the correction plane calculated and set by the correction plane setting unit around the camera focal point, wherein the projection-converted photographic image is A face observation record creating apparatus including an output unit for outputting the face observation record to the outside. 2. When preparing a face observation record for a tunnel face in which a face approximate plane is formed at a predetermined position with respect to the tunnel face, a plurality of face relations are known with respect to the face approximate plane. The tunnel face and the plurality of reference points are photographed on the photographing plane in such a manner that a predetermined camera focus and camera coordinates at which the photographing plane is formed are set, and the photographing is performed. A positional relationship between the plurality of reference point images and the camera focus in a photographic image, and a correction plane parallel to the face approximation plane in the camera coordinates, based on the positional relationship between the plurality of reference points. A face observation record configured to calculate and set, and to project a face image on the photographing plane to the correction plane set and calculated to create a face observation record around the camera focus. Record making method. 3. The face observation record creating method according to claim 2, wherein the marking of the plurality of reference points on the approximate face of the face is performed by marking the plurality of reference points having a known positional relationship with each other on the tunnel face. A method for creating a face observation record, wherein the tunnel support constructed is installed in such a manner as to be positioned on the approximate face of the face. 4. Photographing a tunnel face on which a face approximate plane is set a plurality of times at predetermined time intervals, and based on a plurality of photographic images obtained by the plurality of times of photographing,
3. A method for creating a face observation record according to claim 2, wherein a face observation record over time of the tunnel face is created.