CN219573053U

CN219573053U - Target for photogrammetry

Info

Publication number: CN219573053U
Application number: CN202321743013.9U
Authority: CN
Inventors: 黄惠; 陈鑫; 谢科; 田育菡; 罗利刚; 刘鹏; 覃茂欢; 陈焕圳; 付鸫; 蒋书龙
Original assignee: Shenzhen University
Current assignee: Shenzhen University
Priority date: 2023-07-05
Filing date: 2023-07-05
Publication date: 2023-08-22
Anticipated expiration: 2033-07-05

Abstract

The utility model relates to the technical field of photogrammetry auxiliary tools, and provides a target for photogrammetry, which comprises: the position connecting piece is used for being inserted into the foundation; the seat body is arranged on the position connecting piece in an adjustable way, and a level gauge is arranged on one side, away from the position connecting piece, of the seat body and is used for detecting the levelness of the seat body; the target plate is connected to the seat body, and is provided with a pointing piece which is used for indicating the direction; the marking part is arranged on the surface of the target plate or/and the surface of the pointing piece and is used for marking the position. The utility model has the advantages of being matched with an imager for imaging, and being convenient for quickly determining the azimuth information and the horizontal information of the image control point in the image in aerial photogrammetry.

Description

Target for photogrammetry

Technical Field

The utility model relates to the technical field of photogrammetry auxiliary tools, in particular to a target for photogrammetry.

Background

In photogrammetry, for example, in aerophotography, an imaging device (camera) mounted on an aircraft is used to capture an image control point on the ground, and the captured image is used to analyze the image. In the process of photogrammetry, images of the image control points at different times are required to be shot, the azimuth (east, west, south and north) and the horizontal condition of the image control points are determined by measuring the image control points in the shot images through other measuring instruments, so that the position change, the horizontal change and the azimuth change of the image control points are obtained, and data analysis is performed through the obtained information of the position change, the horizontal change and the azimuth change in the processing application of subsequent photogrammetry.

However, the conventional photographed mark positions are usually only marks, such as a "ten" mark painted by paint, and only the photographed position can be marked, and only the positional change relationship can be obtained in the photographing measurement, and the azimuth information and the horizontal information at the position are not clear.

Accordingly, the existing situation and technology is still in need of improvement and development.

Disclosure of Invention

The utility model aims to provide a target for photogrammetry, which has the advantages of being matched with an imager for imaging, and being convenient for quickly determining azimuth information and horizontal information of an image control point in an image during aerial photogrammetry.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the present utility model provides a target for photogrammetry, comprising:

the position connecting piece is used for being inserted into the foundation;

the seat body is arranged on the position connecting piece in an adjustable way, and a level gauge is arranged on one side, away from the position connecting piece, of the seat body and is used for detecting the levelness of the seat body;

the target plate is connected to the seat body, and is provided with a pointing piece which is used for indicating the direction;

the marking part is arranged on the surface of the target plate or/and the surface of the pointing piece and is used for marking the position.

In one embodiment, the base comprises a base plate, a position connecting piece is connected to the bottom surface of the base plate, a first counter bore is formed in the upper surface of the base plate, and the level gauge is embedded in the first counter bore.

In one embodiment, baffles are arranged at the peripheral edges of the base plate and enclose an installation cavity;

the target plate is embedded in the mounting cavity.

In one embodiment, a clamping groove is formed at the edge of the base body and communicated with the mounting cavity;

the edge of the target plate is provided with a clamping block which is embedded in the clamping groove, so that the target plate is embedded in the mounting cavity.

In one embodiment, the target plate is connected to the base by a snap.

In one embodiment, a second counterbore is provided in the upper surface of the target plate and the pointer is embedded in the second counterbore.

In one embodiment, the pointing element is a compass, which is bonded within the second counterbore.

In one embodiment, the identification portion comprises an identification sticker adhered to a surface of the target plate or/and a surface of the pointing element.

In one embodiment, the position connector comprises: the connecting rod is used for being inserted into the foundation;

the universal ball locking structure is characterized in that one end of the universal ball locking structure is connected with the connecting rod, the other end of the universal ball locking structure is connected with the seat body, and the angle between the seat body and the connecting rod can be adjusted through the universal ball locking structure.

In one embodiment, the housing is a rigid housing and the target plate is a rigid plate.

The target for photogrammetry provided by the utility model has the beneficial effects that: can insert this target in the ground through the position connection spare and fix, through setting up the spirit level on the pedestal, after the target is fixed, can directly detect the levelness of pedestal through the spirit level, and then adjust the pedestal, make the pedestal reach the levelness of predetermineeing and fix. Through connecting the target plate on the pedestal, set up the direction piece on making the target plate, the direction piece is used for instructing the position to can directly perceivedly detect the position of target, for example what the north-south direction of its thing is on one side respectively. The identification portion is used to identify the location by being provided on the surface of the target plate or/and the surface of the pointing element. When the imaging device is matched with an external imaging device, the photo of the target is shot through the imaging device, so that the center position indicated by the identification part can be intuitively positioned in the photo, the position is intuitively embodied as a measuring position, and the identification degree of photogrammetry is improved. Images of different times of the image control points acquired in aerial photogrammetry can be compared to directly obtain azimuth change information and horizontal change information of the targets, so that azimuth and horizontal planes can be conveniently and rapidly determined in aerial photogrammetry, and the working efficiency and accuracy of photogrammetry are improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a target for photogrammetry according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a target for photogrammetry according to an embodiment of the present utility model;

FIG. 3 is a schematic view of another view of a target for photogrammetry according to an embodiment of the present utility model;

fig. 4 is an exploded view of a position connector for a photogrammetric target according to an embodiment of the present utility model.

The reference numerals in the drawings: 100. A position connector; 110. a connecting rod; 120. a universal ball locking structure; 121. adjusting the ball head; 122. a screw gland; 200. a base; 210. a base plate; 211. a first counterbore; 220. a baffle; 221. a mounting cavity; 230. a clamping groove; 240. a boss; 241. a bulb accommodating cavity; 300. a target plate; 310. a clamping block; 320. a second counterbore; 400. a marking part; 500. a level gauge; 600. a pointing member.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings, and are merely for convenience of description and are not to be construed as limiting the present technical solution. The terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.

As shown in fig. 1 and 2, the present embodiment proposes a target for photogrammetry, which is used for being inserted into a preset position on the ground and being matched with an imager for imaging, so as to mark the position of an imaging control point. The target of the present embodiment mainly includes: position connector 100, housing 200, target plate 300, and marker 400. The position connecting piece 100 is used for being inserted into a preset position on a foundation, the seat body 200 is adjustably arranged on the position connecting piece 100, a level meter 500 is arranged on one side, away from the position connecting piece 100, of the seat body 200, and the level meter 500 is used for detecting levelness of the seat body 200; the support to the seat body 200 is realized through the position connecting piece 100 fixed on the foundation, and the levelness of the seat body 200 is adjustable because the seat body 200 is adjustably arranged on the position connecting piece 100, so that the levelness of the seat body 200 can be detected through the level meter 500 on the seat body 200, and a user can adjust the seat body 200 according to the levelness. Or the base 200 and the position connector 100 are adjusted to a preset state, for example, the base 200 and the position connector 100 are mutually perpendicular, after the base 200 is in a horizontal state and is inserted into a foundation for fixing, in the process of shooting the base 200 at different times, after an imager acquires an image of an image control point, the position change of the base 200 and the levelness change after comparison at different times are intuitively acquired from the image, so that the horizontal information of the image control point is acquired. The target plate 300 is connected to the seat body 200, and a pointing piece 600 is arranged on the target plate 300, wherein the pointing piece 600 is used for indicating the direction; the pointing element 600 may be used for orientation indication using the principles of a compass. When the target plate 300 is fixed on the base 200, the imager acquires the image of the image control point, and then the specific direction pointed by the pointing element 600 can be shot, so that the pointing information can be intuitively acquired from the image, and the direction information of the image control point can be acquired. The marking part 400 is provided on the surface of the target plate 300 or/and the surface of the pointing element, and the marking part 400 is used for marking the position. The center position of the target plate 300 can be identified by the identification part 400.

The working principle of the target for photogrammetry provided by the embodiment is as follows: can insert the target in the ground through position connection 100 fixed, through setting up the spirit level on the pedestal 200, after the target is fixed, can directly detect the levelness of pedestal 200 through spirit level 500, and then adjust the pedestal, and then confirm the levelness of target directly perceivedly. By connecting the target plate 300 to the base 200, the pointing element 600 is disposed on the target plate 300, and the pointing element 600 is used for indicating the direction, so that the direction of the target can be intuitively detected, for example, which side is the north-south direction of the target. The identification portion 400 is used to identify a location by providing the identification portion 400 on the surface of the target plate 300 and/or the surface of the pointing element. When matched with an external imager, the photo of the target is shot by the imager, so that the center position indicated by the identification part 400 can be intuitively obtained in the photo, and the position is intuitively represented by the measuring position, thereby improving the identification degree of photogrammetry. The images of different times of the image control points acquired in the aerial photogrammetry can be compared to directly obtain azimuth change information and horizontal change information of the targets, so that the azimuth and the horizontal plane can be conveniently and rapidly determined in the aerial photogrammetry, and the azimuth and horizontal judgment process can be omitted in some subsequent photogrammetry applications, so that the working efficiency and the accuracy of the photogrammetry are improved.

As shown in fig. 1 and 3, further, the position connector 100 in this embodiment specifically includes: the connecting rod 110 and the universal ball locking structure 120. The connecting rod 110 may be a circular tube, which is conveniently inserted into the ground, and the circular tube extends a predetermined length in the up-down direction, and the upper end of the connecting rod 110 is connected with the universal ball locking structure 120, so that the universal ball locking structure 120 is exposed outside the ground after the connecting rod 110 is inserted into the ground. The lower end of the universal ball locking structure 120 is connected with the connecting rod 110, the upper end is connected with the seat body 200, and the angle between the seat body 200 and the connecting rod 110 can be adjusted through the universal ball locking structure 120. The universal ball locking structure 120 may include: adjusting ball 121 and screw gland 122. The adjusting ball 121 is fixedly connected to the upper end of the connecting rod 110, and a through hole is formed in the lower surface of the screw gland 122, so that the screw gland 122 is sleeved on the connecting rod 110. As shown in fig. 3 and 4, in a specific structure, a boss 240 is disposed on a lower surface of the base 200, a ball accommodating cavity 241 is disposed on a lower surface of the boss 240, and the adjusting ball 121 is accommodated in the ball accommodating cavity 241 and can rotate, so that the connecting rod 110 can move relative to the base 200. An external thread is formed on the outer wall of the boss 240, an internal thread is formed on the inner wall of the screw gland 122, the screw gland 122 is connected to the boss 240 in a threaded connection manner and can move up and down through screwing, and the screw gland 122 is abutted to the adjusting ball 121 through the bottom of the screw gland 122 after moving upwards, so that the adjusting ball 121 is fixed, and the position of the connecting rod 110 and the seat body 200 is fixed. If the adjustment is to be performed, the bottom of the screw gland 122 is loosened from the adjusting ball 121 after the screw gland 122 is moved downwards, so that the adjusting ball 121 can move in the ball accommodating cavity 241, and an adjustable function is realized.

As shown in fig. 1 and 2, further, the seat body 200 in this embodiment includes a specific seat plate 210, the bottom surface of the seat plate 210 is connected to the position connector 100, a first counter bore 211 is formed on the upper surface of the seat plate 210, and the level gauge is embedded in the first counter bore 211. The level in this embodiment may be a bubble level commonly used in the market. The level gauge can be fixed on the base plate 210 through the first counter bore 211, so that the level gauge is convenient to detach and install. And moreover, by adopting a counter bore mode, the level gauge can be arranged in a sinking mode, and the space in the upper and lower directions is not occupied, so that the thickness of the whole target is reduced.

The base plate in this embodiment may be a square base plate. The first counterbore 211 may be provided in a central position of the base plate 210 so that the image photographed by the imager may display horizontal information in a middle position.

As shown in fig. 1 and 2, further, the peripheral edge of the base plate 210 in this embodiment is provided with a baffle 220, the baffle 220 encloses a mounting cavity 221, the base plate 210 in this embodiment adopts a square shape, the corresponding baffle 220 encloses a square mounting cavity 221, and the target plate 300 is embedded in the mounting cavity 221. Therefore, the target plate 300 adopts a square structure corresponding to the mounting cavity 221, so that when the square target plate 300 is embedded into the square mounting cavity 221, the square target plate 300 cannot move in the mounting cavity 221 in the horizontal direction, and the target plate 300 and the base 200 can be stably connected, so that the target is more convenient to use.

The target plate 300 in this embodiment is a hard plate, the base is a hard base, and the hard plate and the hard base may be made of hard and non-deformable aluminum alloy plate. Therefore, the stability of the structure can be ensured, the structure cannot be deformed when being used for a long time, and the accuracy of photogrammetry is ensured.

As shown in fig. 1 and 2, further, a clamping groove 230 is formed at the edge of the base 200, and the clamping groove 230 is communicated with the mounting cavity 221. The edge of the target plate 300 is provided with a clamping block 310, and the clamping block 310 is embedded in the clamping groove 230, so that the target plate 300 is embedded in the mounting cavity 221. In a specific structure, two clamping grooves 230 are provided, the two clamping grooves 230 are respectively formed on the baffle plates 220 on the left side and the right side, two corresponding clamping blocks 310 are provided, and the two clamping blocks 310 are positioned on the left side and the right side of the target plate 300 and protrude out of the edges of the target plate 300. Therefore, after the target plate 300 is embedded in the mounting cavity 221, the two clamping blocks 310 are embedded in the clamping grooves 230 embedded in the two sides respectively, further limiting of the target plate 300 can be achieved, if the two clamping blocks 310 are arranged in a staggered manner in the left-right direction, the target plate 300 can only enter the mounting cavity 221 in one direction, and accordingly a foolproof effect is achieved.

In other structures, in order to realize the fixed connection of the target plate and the base body, a through hole can be formed in the clamping block, a threaded hole is formed in the bottom surface of the clamping groove, and the through hole is connected to the threaded hole by penetrating a screw, so that the threaded connection of the target plate and the base body is realized.

As shown in fig. 1 and 2, in this embodiment, the target board 300 and the base 200 are connected by a fastener (not shown). The fastener can adopt common structures such as a clamp, and the like, and is simple in connection and convenient to detach.

As shown in fig. 1 and 2, further, a second counterbore 320 is formed on the upper surface of the target plate 300 in the present embodiment, and the pointing element is embedded in the second counterbore 320. The second counterbore 320 may be disposed in a central location of the target plate 300. The pointing element 600 can be fixed on the target plate 300 through the second counter bore 320, so as to facilitate the disassembly and assembly of the pointing element 600. Moreover, by adopting the counter bore mode, the pointing piece 600 can be arranged in a sinking mode, and the space in the up-down direction is not occupied, so that the thickness of the whole target is reduced.

As shown in fig. 1 and 2, further, the pointing element in this embodiment may be a compass, and the compass is adhered in the second counterbore 320. The pointing element may also be other pointing structures, such as a digital display compass or the like.

The upper housing of the pointing member 600 is a transparent housing. Thus, even if both the compass and the level 500 are disposed at the center of the target, the external imager can capture the azimuth information of the compass and the level information of the level 500.

As shown in fig. 1 and 2, the label 400 in this embodiment further includes a label sticker adhered to the surface of the target board 300 and/or the surface of the pointing element. The center position of the target plate is determined by attaching a label sticker to the upper surface of the target plate 300 and/or the upper surface of the pointing element, so that the center of the target can be determined directly through an image by an external imager in the photogrammetry process, and the position of the image control point is determined.

In summary, according to the target for photogrammetry provided by the utility model, by arranging the level gauge and the pointing element, when an external imager performs photogrammetry, the azimuth information and the horizontal information of the target can be directly obtained from the photographed image, so that the azimuth and the horizontal plane can be conveniently and rapidly determined in aerial photogrammetry, and the process of judging the azimuth and the horizontal plane can be omitted in some subsequent photogrammetry applications, thereby improving the working efficiency and the accuracy of the photogrammetry.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A target for photogrammetry, comprising: a position connector for insertion into a foundation;

the seat body is arranged on the position connecting piece in an adjustable mode, a level gauge is arranged on one side, away from the position connecting piece, of the seat body, and the level gauge is used for detecting the levelness of the seat body;

the target plate is connected to the base body, and is provided with a pointing piece which is used for indicating the direction;

the identification part is arranged on the surface of the target plate or/and the surface of the pointing piece and is used for identifying the position.

2. The target for photogrammetry of claim 1, wherein: the base comprises a base plate, the bottom surface of the base plate is connected with the position connecting piece, a first counter bore is formed in the upper surface of the base plate, and the level gauge is embedded in the first counter bore.

3. The target for photogrammetry according to claim 2, wherein: baffles are arranged at the peripheral edges of the base plate, and the baffles enclose an installation cavity;

the target plate is embedded in the mounting cavity.

4. A target for photogrammetry as claimed in claim 3, wherein: a clamping groove is formed in the edge of the base body and communicated with the mounting cavity;

the edge of the target plate is provided with a clamping block, and the clamping block is embedded in the clamping groove, so that the target plate is embedded in the mounting cavity.

5. The target for photogrammetry of claim 4, wherein the target plate is connected to the housing by a snap fitting.

6. The target for photogrammetry of claim 1, wherein a second counterbore is formed in the upper surface of the target plate, the pointer being embedded in the second counterbore.

7. The target for photogrammetry of claim 6, wherein the pointing element is a compass, the compass being bonded within the second counterbore.

8. A target for photogrammetry according to claim 1, wherein the identification portion comprises an identification decal adhered to the surface of the target plate or/and the surface of the pointing element.

9. The target for photogrammetry of claim 1, wherein the positional connection comprises: the connecting rod is used for being inserted into the foundation;

the universal ball locking structure, universal ball locking structure one end is connected the connecting rod, and the other end is connected the pedestal, the pedestal pass through universal ball locking structure and adjust with the angle of connecting rod.

10. The target for photogrammetry of any one of claims 1 to 9, wherein the target plate is a rigid plate and the housing is a rigid housing.