Self-luminous sign for photogrammetry of motion parameters

Abstract

The utility model relates to a self-luminous sign for photogrammetry of motion parameters. The self-luminous sign comprises a multispectral luminous device, a four-quadrant sign, a light guide plate and a multifunctional circuit. The utility model aims to solve the problem that when the motion parameters of an object are measured by photogrammetry, the brightness of mark points on the moving object in an image is inconsistent when the illumination condition is poor or the environment is complex, so that the analysis precision of the object motion is reduced. According to the invention, the consistency of the brightness of the mark points on the moving object can be ensured, the dependence on external lighting equipment is reduced, and the energy consumption is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical photogrammetry field, concretely is a kind of self-luminous mark for photogrammetry motion parameter, it is matched in the photogrammetry system related to high-speed motion object posture measurement. BACKGROUND

[0002] Motion posture analysis usually adopts the mode of photogrammetry. Specifically, the mark points are pasted on the surface of the moving object, and the continuous time images of the moving object are shot by a high-speed camera, and the coordinates of the mark points on the moving object are tracked by using a visual algorithm to calculate the position and posture of the moving object. Therefore, the details and features of the mark points are crucial.

[0003] For example, when the airborne suspension device drops the airborne suspended weapon, the airborne suspended weapon moves at high speed, the exposure time of high-speed photography is short, which leads to a dark photogram, and makes the data analysis error larger, and even the mark points are lost. Even if additional light supplementing equipment is adopted, the above problems will occur due to uneven light and large moving area, and the light supplementing method also increases energy consumption. INVENTION CONTENTS

[0004] The utility model aims at:

[0005] The present application aims to provide a self-luminous mark for photogrammetry motion parameter, which solves the problem that the photogrammetry system is not ideal when the object motion parameter is photogrammed due to poor lighting conditions or complex environment. In addition, the traditional mark point has single function, lacks intelligence and self-adaptation, and cannot meet the high-precision and high-efficiency requirements of modern measurement technology.

[0006] The technical solution of the utility model is:

[0007] A self-luminous mark for photogrammetry motion parameter is provided, which comprises a multi-spectral light emitting device 1, a four-quadrant mark 2, a light guide plate 3 and a multifunctional circuit 4.

[0008] The mark point integrates the multi-spectral light emitting device 1, which can be adjusted in different spectral ranges of visible light, infrared light and ultraviolet light to adapt to optical sensors in different scenes. The multi-spectral light emitting device is located at the outer periphery of the light guide plate 3, and the four-quadrant mark 2 is located on the outer surface of the light guide plate. The local black area of the four-quadrant mark has the effect of absorbing light, and the local white area of the four-quadrant mark does not absorb light, thereby producing obvious optical characteristics, which are suitable for optical sensors.

[0009] The multifunctional circuit 4 comprises a central processing unit for controlling the working state of the multi-spectral light emitting device 1.

[0010] Further, the multispectral light emitting device is not limited to visible light, but also includes infrared light and ultraviolet light.

[0011] Further, the multifunctional circuit 4 has an open interface, and an external module can be installed to realize multifunctional control.

[0012] Further, the inner surface of the light guide plate is provided with a photosensitive module connected with the multifunctional circuit 4, so that the light emitting brightness of the multispectral light emitting device 1 can be automatically adjusted.

[0013] Further, the multifunctional circuit 4 is integrated with or installed with a high-frequency gyroscope and an accelerometer, so as to monitor the position and posture changes of the sign in real time.

[0014] Further, the multifunctional circuit 4 is integrated with or installed with a wireless data transmission module, so as to realize wireless data transmission and remote control between the sign and a remote control device.

[0015] Further, the multifunctional circuit has an intelligent power management module, so as to realize timing control and allow a user to set fixed light emitting time.

[0016] Further, the outer surface of the multispectral light emitting device 1 is attached with a shading device, so that light is diffused along the light guide plate 3.

[0017] Further, the multifunctional circuit 4 has an IO interface, which can be used for debugging, backup, monitoring and the like.

[0018] The utility model has the advantages that:

[0019] The utility model discloses a self -emitting mark for photogrammetry motion parameter, including multispectral light emitting device 1, four quadrant mark 2, light guide plate 3 and multi -functional circuit 4, the light intensity of the mark is detected by ambient light sensor, and the luminous brightness of the light mark point is adjusted automatically, ensures that can keep the best visibility under different illumination conditions, and realizes energy -conserving. The mark is favorable to improve the consistency of mark point brightness in the whole field of view, improve the precision of motion analysis, and with long endurance power management system, can satisfy the long -term measurement need of any time all day, do not need additional light supplement equipment any more, save energy. In addition, the mark is built -in high -frequency gyroscope and accelerometer, and the relative motion of mark point is monitored in real time, provides priori information for the interframe motion of photogrammetry, avoids mark point tracking loss. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structural schematic diagram of self -emitting mark;

[0021] Figure 2 It is the principle schematic diagram of self -emitting mark;

[0022] Wherein: 1-multispectral light emitting device, 2-four quadrant mark, 3-light guide plate, 4-multifunctional circuit board. DETAILED DESCRIPTION

[0023] The disclosed examples will be described more fully with reference to the accompanying drawings, in which some, but not all, of the disclosed examples are illustrated. Indeed, a great variety of examples can be described and many implementations are not described at all. This description is intended to be thorough and complete, and to fully convey the scope of the disclosure to those skilled in the art.

[0024] Example 1, as Figure 1 , provides a self-emitting mark for photogrammetry motion parameter, including multispectral light emitting device 1, four quadrant mark 2, light guide plate 3 and multi -functional circuit 4.

[0025] The mark point integrates multispectral light emitting device 1 and can be adjusted in different spectral ranges of visible light, infrared light and ultraviolet light to adapt to optical sensors in different scenes. The multispectral light emitting device is located at the outer periphery of the light guide plate 3, and the four-quadrant mark 2 is located on the outer surface of the light guide plate. The local black area of the four-quadrant mark has the effect of absorbing light, and the local white area of the four-quadrant mark does not absorb light, thereby producing obvious optical characteristics and adapting to optical sensors.

[0026] The multi -functional circuit 4 includes the central processing unit for controlling the working state of the multispectral light emitting device 1.

[0027] The self-emitting mark is not limited to visible light, but also includes infrared light and ultraviolet light.

[0028] Example 2, as Figure 1The application provides a self-luminous mark for photogrammetric motion parameter measurement, comprising a multi-spectrum light emitting device 1, a four-quadrant mark 2, a light guide plate 3 and a multifunctional circuit 4.

[0029] The mark point integrated multi-spectrum light emitting device 1 can be adjusted in different spectral ranges of visible light, infrared light and ultraviolet light to adapt to optical sensors in different scenes; the multi-spectrum light emitting device is located at the outer periphery of the light guide plate 3, and the four-quadrant mark 2 is located on the outer surface of the light guide plate; the local black area of the four-quadrant mark has the effect of absorbing light, and the local white area of the four-quadrant mark does not absorb light, thereby producing obvious optical characteristics and adapting to optical sensors.

[0030] The multifunctional circuit 4 comprises a central processing unit for controlling the working state of the multi-spectrum light emitting device 1.

[0031] The multi-spectrum light emitting device is not limited to visible light, but also includes infrared light and ultraviolet light.

[0032] The multifunctional circuit 4 has an open interface and can install an external module to realize multifunctional control. Similar to the PCI socket of a computer mainboard, the multifunctional circuit 4 can match various adapter boards.

[0033] The inner surface of the light guide plate is provided with a photosensitive module connected with the multifunctional circuit 4 to automatically adjust the luminous brightness of the multi-spectrum light emitting device 1. The photosensitive module has a self-adaptive brightness adjusting function, thereby reducing energy consumption and ensuring the brightness consistency of multiple points under complex light conditions in a wide range.

[0034] The multifunctional circuit 4 is integrated with or installed with a high-frequency gyroscope and an accelerometer to monitor the position and attitude changes of the mark in real time. The high-frequency gyroscope and the accelerometer can be connected to the multifunctional circuit as a whole as a position and attitude detection module to provide the relative motion of the mark between frames for optical photogrammetry, thereby avoiding the loss of mark point tracking in the optical algorithm.

[0035] The multifunctional circuit 4 is integrated with or installed with a wireless data transmission module to realize wireless data transmission and remote control between the mark and a remote control device. The wireless data transmission module is convenient for centralized processing and analysis of data. In addition, the wireless data transmission module of the mark also has the functions of supporting synchronous light emission and synchronous data transmission of multiple points and facilitating optical photogrammetry in a wide range.

[0036] The multifunctional circuit has an intelligent power management module and can realize timing control, allowing the user to set a fixed light emitting time. Once the set light emitting time is reached, the mark will automatically stop emitting light, thereby reducing the waste of energy.

[0037] The outer surface of the multispectral light emitting device 1 is attached with a light shielding device, so that the light is diffused along the light guide plate 3, and the light guide plate material has certain light transmittance. The four-quadrant mark is pasted on the outer surface of the light guide plate, and also has light transmittance. The utility model can be installed on the outer surface of a moving object, and the number and position can be increased or decreased according to the design measurement needs.

[0038] The multifunctional circuit 4 has an IO interface.

[0039] The description of the different advantageous arrangements has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the examples disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Moreover, different advantageous examples can provide different advantages as compared to other advantageous examples. The chosen examples or examples are chosen to best explain the principles of the example, the practical application, and to enable others skilled in the art to best exploit the disclosure. The disclosure is to be considered in all its novel aspects and not limited to the described and illustrated examples.

Claims

1. A self-illuminating marker for photogrammetry of motion parameters, characterized in that: It includes a multispectral light-emitting device (1), a four-quadrant marker (2), a light guide plate (3), and a multifunctional circuit (4); The logo integrates a multispectral light-emitting device (1) which can be adjusted within different spectral ranges of visible light, infrared light and ultraviolet light to adapt to optical sensors in different scenarios; the multispectral light-emitting device is located on the outer periphery of the light guide plate (3), and the four-quadrant logo (2) is located on the outer surface of the light guide plate; the local black area of ​​the four-quadrant logo has the effect of absorbing light, and the local white area of ​​the four-quadrant logo does not absorb light, thus producing obvious optical features and being compatible with optical sensors; The multifunctional circuit (4) includes a central processing unit for controlling the operating state of the multispectral light-emitting device.

2. The self-illuminating marker for photogrammetry of motion parameters according to claim 1, characterized in that: The multispectral light-emitting device is not limited to visible light, but also includes infrared light and ultraviolet light.

3. A self-illuminating marker for photogrammetry of motion parameters according to claim 1, characterized in that: The multifunctional circuit has an open interface, which can be used to install external modules to achieve multifunctional control.

4. A self-illuminating marker for photogrammetry of motion parameters according to claim 1, characterized in that: A photosensitive module is installed on the inner surface of the light guide plate. This photosensitive module is connected to the multifunctional circuit and automatically adjusts the luminous brightness of the multispectral light-emitting device.

5. A self-illuminating marker for photogrammetry of motion parameters according to claim 1, characterized in that: The multifunctional circuit integrates or is equipped with a high-frequency gyroscope and accelerometer to monitor the position and attitude changes of the marker in real time.

6. A self-illuminating marker for photogrammetry of motion parameters according to claim 1, characterized in that: The multifunctional circuit integrates or is equipped with a wireless data transmission module to enable wireless data transmission and remote control between the sign and the remote control device.

7. A self-illuminating marker for photogrammetric motion parameters according to claim 1, characterized in that: The multifunctional circuit has an intelligent power management module that enables timing control, allowing users to set a fixed emission time.

8. A self-illuminating marker for photogrammetry of motion parameters according to claim 1, characterized in that: The outer surface of the multispectral light-emitting device is covered with a light-shielding device, which allows light to diffuse along the light guide plate (3). The light guide plate material has a certain degree of light transmittance.

9. A self-illuminating marker for photogrammetry of motion parameters according to claim 1, characterized in that: The multifunctional circuit has an I / O interface.

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