Texture optimization plate for optimizing texture precision of three-dimensional scanning system
The texture optimization board with defined patterns on a base plate addresses inaccurate texture mapping in three-dimensional scanning, improving precision and consistency of texture capture and reconstruction.
Patent Information
- Application Number
- CN202421659111.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-12
AI Technical Summary
Existing 3D scanning devices have problems with inaccurate texture mapping when reconstructing HD maps.
Design a texture optimization board, with the substrate equipped with first and second texture optimization patterns in specific arrangements, and obtain point clouds and texture pictures of the texture optimization board through a three-dimensional scanning system, optimize texture mapping parameters, and ensure the accurate correspondence between the texture map and the three-dimensional grid.
The texture accuracy of the three-dimensional scanning system is improved, ensuring the exact correspondence between the texture map and the three-dimensional grid, and improving the accuracy and consistency of the three-dimensional model.
Smart Images
Figure CN223110071U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of three-dimensional scanning, in particular to a texture optimization board for optimizing the texture accuracy of a three-dimensional scanning system. Background Art
[0002] The structured light three-dimensional scanning system reconstructs the surface contour of the scanned target by calculating the depth information of the target, and obtains a digital three-dimensional mesh. If a realistic three-dimensional effect is desired, high-definition three-dimensional texture mapping technology support is also required. The digital three-dimensional model is divided into two parts. One part is the three-dimensional mesh, which represents the spatial structure; the other part is the texture map, which represents the color information. To evaluate the accuracy of a digital three-dimensional model, both the accuracy of the three-dimensional mesh model and the accuracy of the texture map mapping relationship need to be examined. For example, when the three-dimensional mesh shows the concave and convex information of the human eye in a certain area, the corresponding texture map should originally display a colored human eye picture, and the details of the texture picture correspond one by one to the concave and convex details of the mesh model. If there are obvious deviations or even incorrect displays as eyebrows or even noses due to texture mapping accuracy problems, then this digital three-dimensional model is inaccurate or even wrong. Therefore, there is a problem with the mapping accuracy between the texture map and the three-dimensional mesh. However, currently, there is a problem of inaccurate texture mapping when three-dimensional scanning devices reconstruct high-definition texture maps. Summary of the Utility Model
[0003] The main purpose of the utility model is to provide a texture optimization board for optimizing the texture accuracy of a three-dimensional scanning system, aiming to solve the problem of inaccurate texture mapping when existing three-dimensional scanning devices reconstruct high-definition texture maps.
[0004] To achieve the above object, the utility model provides a texture optimization board for optimizing the texture accuracy of a three-dimensional scanning system, including a substrate, on which a first texture optimization pattern and a second texture optimization pattern are provided;
[0005] The first texture optimization pattern is set in three groups. The first group of texture optimization patterns is evenly distributed in a rectangle, the second group of texture optimization patterns is evenly distributed in a square, and the third group of texture optimization patterns is evenly distributed in a straight line along the axis direction of the substrate; the rectangle formed by the first group of texture optimization patterns and the square formed by the second group of texture optimization patterns are both coaxially arranged with the substrate, and the square is located inside the rectangle; the second texture optimization pattern is set to one, and the second texture optimization pattern is located between the rectangle and the square.
[0006] Optionally, the first group of texture optimization patterns is set to four, and the four texture optimization patterns are respectively located at the end corners of the substrate.
[0007] Optionally, the second group of the texture optimization patterns is set to four, and the four texture optimization patterns are respectively located at the four corner ends of the square.
[0008] Optionally, the third group of the texture optimization patterns is set to three, and the three texture optimization patterns are respectively located at the trisection points of the substrate axis.
[0009] Optionally, the second texture optimization pattern is located between one of the corner ends of the rectangle and the square.
[0010] Optionally, the first texture optimization pattern is set to a hollow circular ring structure, and the second texture optimization pattern is set to a hollow rectangular ring structure.
[0011] Optionally, the length of the substrate is set to 300 mm, the width is set to 200 mm, and the thickness is set to 5 mm.
[0012] Optionally, the substrate is set to an acrylic one-piece forming structure.
[0013] Optionally, the inner circle radius of the first texture optimization pattern is set to 3 mm, and the outer circle radius is set to 8 mm.
[0014] Optionally, the inner rectangle length of the second texture optimization pattern is set to 10 mm, the width is set to 2 mm, the outer rectangle length of the second texture optimization pattern is set to 20 mm, and the width is set to 13 mm.
[0015] The beneficial effects of the present utility model are as follows: A texture optimization board is provided for the three-dimensional scanning system. The texture optimization board can be placed within the working range of the three-dimensional scanning system to perform a three-dimensional scan, respectively obtaining unit point clouds and texture pictures for subsequent texture accuracy optimization of the three-dimensional scanning system. A standardized surface is provided for the three-dimensional scanning system to ensure the accuracy and consistency of texture capture during the scanning process. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.
[0017] Figure 1 It is the printed pattern of the texture optimization board of the present utility model;
[0018] Figure 2 It is the texture of the texture optimization board scanned by the three-dimensional scanning system of the present utility model;
[0019] Figure 3 It is the point cloud of the texture optimization board scanned by the three-dimensional scanning system of the present utility model;
[0020] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0022] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.
[0023] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, then the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0024] An embodiment of the present utility model provides a texture optimization board for optimizing the texture accuracy of a three-dimensional scanning system, including a substrate, and a first texture optimization pattern and a second texture optimization pattern are provided on the substrate;
[0025] Reference Figure 1, the first texture optimization pattern is set to three groups. The first group of the texture optimization patterns are evenly distributed in a rectangle, the second group of the texture optimization patterns are evenly distributed in a square, and the third group of the texture optimization patterns are evenly distributed in a straight line along the axis direction of the substrate. The rectangle formed by the first group of the texture optimization patterns and the square formed by the second group of the texture optimization patterns are both coaxially arranged with the substrate, and the square is located inside the rectangle. The second texture optimization pattern is set to one, and the second texture optimization pattern is located between the rectangle and the square.
[0026] This embodiment provides a texture optimization board for an existing three-dimensional scanning system. The three-dimensional scanning system scans this texture optimization board, and then extracts the three-dimensional coordinates and two-dimensional coordinates of a series of points marked on the texture optimization board respectively. By calculating the error of mapping the three-dimensional coordinates to the two-dimensional coordinates, the texture mapping parameters with the smallest error are found to complete the optimization of the texture accuracy of the three-dimensional scanning system.
[0027] Specifically, the first group of the texture optimization patterns is set to four, and the four texture optimization patterns are respectively located at the end corners of the substrate. The second group of the texture optimization patterns is set to four, and the four texture optimization patterns are respectively located at the four end corners of the square. The third group of the texture optimization patterns is set to three, and the three texture optimization patterns are respectively located at the three equal division points of the axis of the substrate. The second texture optimization pattern is located between one of the end corners of the rectangle and the square.
[0028] In this embodiment, in order to ensure better optimization accuracy, in accordance with the principle of uniform sampling of the working range of the three-dimensional scanning device, the first texture optimization patterns are basically evenly distributed on the substrate. It neither biases towards the optimization of a certain local area nor adds too many optimization points to increase the subsequent workload of the operator, making the optimization accuracy higher. At the same time, a second texture optimization pattern is set to play an anti-fooling role to prevent the problem of upside-down in the up-down, left-right directions.
[0029] Before scanning, first ensure that the light source and camera of the three-dimensional scanning system are correctly configured and calibrated. This step ensures that the scanning system can accurately obtain image data.
[0030] During scanning, the three-dimensional scanning system irradiates the surface of the texture optimization board through the light source, and the camera captures the light reflected from the surface of the texture optimization board. The software of the three-dimensional scanning system processes the captured image data and analyzes the reflection pattern and color information of the light. Based on the data captured from the surface of the texture optimization board, the scanning system generates a texture mapping, which describes the spatial distribution, color, and details of the texture. These data can be directly applied to subsequent three-dimensional modeling or rendering processes. Adjust the light source, camera, or software settings according to the actual scanning effect to optimize the quality and accuracy of texture capture. Regularly using the texture optimization board helps to calibrate and optimize the three-dimensional scanning system.
[0031] Furthermore, the first texture optimization pattern is set as a hollow circular ring structure, and the second texture optimization pattern is set as a hollow rectangular ring structure. Then, the texture optimization plate is placed within the scanning area, ensuring that its surface is aligned with the light source and camera of the scanning system.
[0032] It should be noted that the black hollow circular ring will form a three-dimensional point cloud in the shape of an isolated small circular island under the three-dimensional scanning system, as Figure 3 shown. By analyzing this small circular island, the center of the hollow circular ring can be obtained by fitting, thereby realizing the extraction of the three-dimensional coordinates of the center. The hollow rectangle, as a special shape in the entire optimization plate, is very easy to distinguish, facilitating the operator to quickly realize the correspondence between the point cloud data after three-dimensional reconstruction and the two-dimensional texture picture, and there will be no problem of being upside down left and right.
[0033] Furthermore, the length of the substrate is set to 300 mm, the width is set to 200 mm, and the thickness is set to 5 mm. The inner radius of the first texture optimization pattern is set to 3 mm, and the outer radius is set to 8 mm. The inner rectangle length of the second texture optimization pattern is set to 10 mm, the width is set to 2 mm, and the outer rectangle length of the second texture optimization pattern is set to 20 mm, the width is set to 13 mm.
[0034] It should be noted that the working range of the three-dimensional scanning device for scanning the human face is approximately 300 mm * 200 mm. By using a substrate of this size, the accuracy optimization within the effective working range of the three-dimensional scanning device can be achieved with one three-dimensional scan. The 5-mm acrylic board not only ensures the hardness and quality of the substrate but also takes into account the compactness and cost of the product. The size selection of the first texture optimization pattern and the second texture optimization pattern not only meets the requirement that the patterns can be evenly arranged on the substrate but also satisfies the requirement for accurate scanning of the scanning system.
[0035] Furthermore, the substrate is set as an integrally formed acrylic structure. It should be noted that the material of the texture optimization plate should have the characteristic of maximizing light reflection or scattering so that the scanning system can accurately perceive the surface details and colors. In this embodiment, an acrylic texture optimization plate is selected to meet the requirements of the texture optimization plate and improve the scanning accuracy of the scanning system.
[0036] The above are only optional embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, is included within the patent protection scope of the present utility model.
Claims
1. A texture optimization board for optimizing the texture accuracy of a three-dimensional scanning system, characterized in that, It includes a substrate, on which a first texture optimization pattern and a second texture optimization pattern are provided; The first texture optimization pattern is set to three groups. The first group of the texture optimization patterns are evenly distributed in a rectangular shape, the second group of the texture optimization patterns are evenly distributed in a square shape, and the third group of the texture optimization patterns are evenly distributed in a straight line along the axis direction of the substrate; The rectangle formed by the first group of the texture optimization patterns and the square formed by the second group of the texture optimization patterns are both coaxially arranged with the substrate, and the square is located inside the rectangle; The second texture optimization pattern is set to one, and the second texture optimization pattern is located between the rectangle and the square.
2. The texture optimization board for optimizing the texture accuracy of a three-dimensional scanning system according to claim 1, characterized in that, The first group of the texture optimization patterns is set to four, and the four texture optimization patterns are respectively located at the end corners of the substrate.
3. The texture optimization board for optimizing the texture accuracy of a three-dimensional scanning system according to claim 1, characterized in that, The second group of the texture optimization patterns is set to four, and the four texture optimization patterns are respectively located at the four end corners of the square.
4. The texture optimization board for optimizing the texture accuracy of a three-dimensional scanning system according to claim 1, wherein The third group of the texture optimization patterns is set to three, and the three texture optimization patterns are respectively located at the trisection points of the axis of the substrate.
5. The texture optimization board for optimizing the texture accuracy of the three-dimensional scanning system according to claim 1, wherein The second texture optimization pattern is located between one of the end corners of the rectangle and the square.
6. The texture optimization board for optimizing the texture accuracy of a three-dimensional scanning system according to any one of claims 1 to 5, characterized in that The first texture optimization pattern is set to a hollow circular ring structure, and the second texture optimization pattern is set to a hollow rectangular ring structure.
7. The texture optimization board for optimizing the texture accuracy of a three-dimensional scanning system according to claim 6, wherein The length of the substrate is set to 300 mm, the width is set to 200 mm, and the thickness is set to 5 mm.
8. The texture optimization board for optimizing the texture accuracy of a three-dimensional scanning system according to claim 7, characterized in that, The substrate is set to an integrally formed acrylic structure.
9. The texture optimization board for optimizing the texture accuracy of a three-dimensional scanning system according to claim 7, characterized in that The inner circle radius of the first texture optimization pattern is set to 3 mm, and the outer circle radius is set to 8 mm.
10. The texture optimization board for optimizing the texture accuracy of a three-dimensional scanning system according to claim 7, characterized in that, The inner rectangle length of the second texture optimization pattern is set to 10 mm, the width is set to 2 mm, and the outer rectangle length of the second texture optimization pattern is set to 20 mm, and the width is set to 13 mm.