Photogrammetric target ball

Abstract

The utility model discloses a kind of photogrammetry target balls, it is related to photogrammetry technical field.The photogrammetry target ball includes sphere, sphere is the shell of inside hollow;Sphere includes the upper top surface of top and the lower bottom surface of bottom, and upper top surface and lower bottom surface are same size square structure, four edges of upper top surface extend outward and are provided with first connecting surface, two first connecting surfaces are connected between by second connecting surface, first connecting surface and second connecting surface extend and are provided with third connecting surface to lower bottom surface side, four side edges of lower bottom surface extend and are provided with fourth connecting surface to third connecting surface side, the top of fourth connecting surface is connected with corresponding third connecting surface, fourth connecting surface is same size square structure with third connecting surface, two fourth connecting surfaces are connected between by fifth connecting surface, and fifth connecting surface is connected with third connecting surface;First connecting surface, third connecting surface, fourth connecting surface and lower bottom surface are provided with coding point.

Description

Technical Field

[0001] This utility model relates to the field of photogrammetry technology, and specifically to a photogrammetric target ball. Background Technology

[0002] A photogrammetric target sphere is an indirect measurement tool used in photogrammetry. It is mainly used to provide high-precision, high-resolution reference data to help the system measure three-dimensional spatial coordinates and attitude.

[0003] Existing target sphere structures include cubes or combinations of multiple 6-20mm spheres. However, cube structures have low recognition rates, multi-sphere structures have low recognition rates, and data offset cannot be performed. Utility Model Content

[0004] Therefore, this utility model provides a photogrammetric target sphere to solve the problems existing in the above-mentioned technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A photogrammetric target sphere includes a sphere, wherein the sphere is a hollow shell;

[0007] The sphere includes an upper top surface and a lower bottom surface, both of which are square structures of the same size. The four sides of the upper top surface extend outward to form a first connecting surface. Adjacent first connecting surfaces are connected by a second connecting surface. The first connecting surface is a square structure of the same size as the upper top surface. The second connecting surface is an equilateral triangle. The first and second connecting surfaces extend towards the lower bottom surface to form a third connecting surface. The third connecting surface is a square structure of the same size as the first connecting surface. The four sides of the lower bottom surface extend towards the third connecting surface to form a fourth connecting surface. The top of the fourth connecting surface is connected to the corresponding third connecting surface. The fourth connecting surface is a square structure of the same size as the third connecting surface. Adjacent fourth connecting surfaces are connected by a fifth connecting surface, which is also connected to the third connecting surface.

[0008] The first connecting surface, the third connecting surface, the fourth connecting surface, and the bottom surface are all provided with coding points.

[0009] Optionally, a mounting hole is provided on the top surface for connecting the object to be tested.

[0010] Optionally, both the second and fifth connecting surfaces are provided with weight-reducing holes that penetrate the inside and outside of the sphere.

[0011] Optionally, the sphere is provided with a support frame inside, which is a support rod extending and fixed from the center of the sphere to the top surface, bottom surface, first connecting surface, third connecting surface and fourth connecting surface, and multiple support rods are fixedly connected at the center of the sphere.

[0012] Optionally, the sphere is made of photosensitive resin.

[0013] Optionally, the sphere is integrally formed.

[0014] This utility model has at least the following beneficial effects:

[0015] This invention sets the sphere as a polyhedral structure formed by an upper surface, a first connecting surface, a second connecting surface, a third connecting surface, a fourth connecting surface, and a fifth connecting surface. The first connecting surface, the third connecting surface, the fourth connecting surface, and the bottom surface are provided with coding points, so that the sphere can be observed from at least two surfaces with three coding points at different angles. By judging the posture of the sphere, the posture of the object fixed on the upper surface can be deduced, thereby improving the recognition rate. Attached Figure Description

[0016] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a first-view structural diagram of an embodiment of the present invention;

[0019] Figure 2 This is a second-view structural schematic diagram of an embodiment of the present invention;

[0020] Figure 3 This is an intentional use of a third-view structure according to an embodiment of the present invention;

[0021] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of section AA.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Top surface; 2. Bottom surface; 3. First connecting surface; 4. Second connecting surface; 5. Third connecting surface; 6. Fourth connecting surface; 7. Fifth connecting surface; 8. Mounting hole; 9. Weight reduction hole; 10. Support frame. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0025] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," "fourth," etc. (if present), in the specification, claims, and accompanying drawings of this utility model are intended to distinguish the objects they refer to. For solutions with a sequential flow, this terminology need not be interpreted as describing a specific order or sequence; for solutions with device structures, this terminology does not distinguish between matters of importance or positional relationships.

[0026] Furthermore, the terms “comprising,” “having,” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may also include other steps or units that are not expressly listed but are inherent to these processes, methods, products, or devices, or steps or units added based on further optimizations of the inventive concept.

[0027] like Figures 1-4 As shown, this utility model discloses a photogrammetric target sphere, which includes a sphere that is a hollow shell.

[0028] The sphere includes an upper top surface 1 and a lower bottom surface 2, both of which are square structures of the same size. The four sides of the upper top surface 1 extend outward to form a first connecting surface 3. Adjacent first connecting surfaces 3 are connected by a second connecting surface 4. The first connecting surface 3 is a square structure of the same size as the upper top surface 1, and the second connecting surface 4 is an equilateral triangle. The first connecting surface 3 and the second connecting surface 4 extend towards the lower bottom surface 2 to form a third connecting surface 5, which is a square structure of the same size as the first connecting surface 3. The four sides of the lower bottom surface 2 extend towards the third connecting surface 5 to form a fourth connecting surface 6. The top of the fourth connecting surface 6 is connected to the corresponding third connecting surface 5. The fourth connecting surface 6 is a square structure of the same size as the third connecting surface 5. Adjacent fourth connecting surfaces 6 are connected by a fifth connecting surface 7, which is also connected to the third connecting surface 5.

[0029] The first connecting surface 3, the third connecting surface 5, the fourth connecting surface 6, and the bottom surface 2 are all provided with coding points.

[0030] The aforementioned sphere can be made of photosensitive resin. The sphere has a polyhedral structure, with its outer shell integrally molded. Specifically, the sphere has an upper top surface 1 and a lower bottom surface 2 facing each other. Both the upper top surface 1 and the lower bottom surface 2 are square. Four sides of the upper top surface 1 extend towards the lower bottom surface 2, forming first connecting surfaces 3. Each first connecting surface 3 is a square of the same size as the upper top surface 1. Adjacent first connecting surfaces 3 form an equilateral triangle. A second connecting surface 4 is positioned between adjacent first connecting surfaces 3, connecting to the first connecting surfaces 3 on both sides. The bottom surface of each first connecting surface 3 and the bottom surface of each second connecting surface 4 form an equilateral triangle. A continuous octagonal structure, with a third connecting surface 5 extending downward from its bottom surface. The third connecting surface 5 is a square structure of the same size as the first connecting surface 3. The third connecting surface 5 is perpendicular to the top surface 1 and the bottom surface 2. Then, a fourth connecting surface 6 extends from the four sides of the bottom surface 2 toward the third connecting surface 5. The fourth connecting surface 6 is a square structure of the same size as the third connecting surface 5. At the same time, a fifth connecting surface 7 is set at the equilateral triangle formed by two adjacent fourth connecting surfaces 6. The top surface 1, the first connecting surface 3 and the second connecting surface 4 at the top and the bottom surface 2, the fourth connecting surface 6 and the fifth connecting surface 7 at the bottom are symmetrically arranged about the middle of the third connecting surface 5.

[0031] Then, coding points (except for the top surface 1) are set on the square surface of the polyhedral sphere to serve as the detection surface. The top surface 1 serves as the mounting surface of the object to be tested, and the triangular surface serves as the weight reduction surface.

[0032] In a further embodiment, the upper top surface 1 is provided with a mounting hole 8 for connecting the object to be tested.

[0033] Mounting holes 8 are provided on the top surface 1 described above. The specific number and position of the mounting holes 8 can be set according to the object to be measured. In this embodiment, four mounting holes 8 are provided, which are located near the four corners of the square surface. The mounting holes 8 are threaded holes and are used to install and fix them to the bolts on the object to be measured.

[0034] In a further embodiment, both the second connecting surface 4 and the fifth connecting surface 7 are provided with weight-reducing holes 9 that penetrate the inside and outside of the sphere.

[0035] On the triangular surfaces of the second connecting surface 4 and the fifth connecting surface 7, through holes are made to penetrate the interior of the sphere as weight-reducing holes 9 to reduce the weight of the sphere. The hollowness of the sphere also serves to reduce weight.

[0036] In some other embodiments, the sphere is provided with a support frame 10 inside. The support frame 10 is a support rod that extends and is fixed from the center of the sphere to the top surface 1, the bottom surface 2, the first connecting surface 3, the third connecting surface 5, and the fourth connecting surface 6. Multiple support rods are fixedly connected at the center of the sphere.

[0037] To ensure the stability of other spheres, a support frame 10 is installed inside the sphere. The support frame 10 consists of support rods that extend from the center of the sphere toward each surface and are fixed thereto. Multiple support rods are fixed together at the center of the sphere. The support rods are generally installed to support the square surface from the center of the sphere.

[0038] The sphere is made of photosensitive resin.

[0039] To further improve the stability of the sphere, the sphere is integrally molded. Multiple surfaces of the sphere are integrally molded.

[0040] The above specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0041] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

[0042] The present invention has been described in a relatively specific and detailed manner above through general description and specific embodiments. It should be noted that, without departing from the concept of the present invention, various modifications and improvements can be made to these specific embodiments, all of which fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A photogrammetric target sphere, characterized in that: Includes a sphere, wherein the sphere is a hollow shell; The sphere includes an upper top surface and a lower bottom surface, both of which are square structures of the same size. The four sides of the upper top surface extend outward to form a first connecting surface. Adjacent first connecting surfaces are connected by a second connecting surface. The first connecting surface is a square structure of the same size as the upper top surface. The second connecting surface is an equilateral triangle. The first and second connecting surfaces extend towards the lower bottom surface to form a third connecting surface. The third connecting surface is a square structure of the same size as the first connecting surface. The four sides of the lower bottom surface extend towards the third connecting surface to form a fourth connecting surface. The top of the fourth connecting surface is connected to the corresponding third connecting surface. The fourth connecting surface is a square structure of the same size as the third connecting surface. Adjacent fourth connecting surfaces are connected by a fifth connecting surface, which is also connected to the third connecting surface. The first connecting surface, the third connecting surface, the fourth connecting surface, and the bottom surface are all provided with coding points.

2. The photogrammetric target sphere according to claim 1, characterized in that: The top surface has mounting holes for connecting the object to be tested.

3. The photogrammetric target sphere according to claim 1, characterized in that: Both the second and fifth connecting surfaces have weight-reducing holes that penetrate the inside and outside of the sphere.

4. A photogrammetric target sphere according to claim 1, characterized in that: The sphere is equipped with a support frame inside. The support frame consists of a support rod that extends and is fixed from the center of the sphere to the top surface, bottom surface, first connecting surface, third connecting surface, and fourth connecting surface. Multiple support rods are fixedly connected at the center of the sphere.

5. A photogrammetric target sphere according to claim 1, characterized in that: The sphere is made of photosensitive resin.

6. A photogrammetric target sphere according to claim 1, characterized in that: The sphere is integrally molded.

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