Line array camera stabilizing device detection system and detection method

Abstract

The present disclosure relates to a line array camera stabilizing device detection system and method, the detection system comprising a stabilizing device; a line array camera is fixed on the stabilizing device, and the stabilizing device is fixed on a vibration exciter; the line array camera is electrically connected with a processing device; a collimator is arranged in front of the line array camera, one end of the collimator away from the line array camera is fixed with a reticle, and the reticle is provided with a light source; the lens of the line array camera is at the same horizontal height as the central axis of the collimator; and the line array camera comprises a TDICCD camera and an optical lens. The stabilizing performance of the device is detected by the collimator, the reticle, the vibration exciter and the like, the experimental environment is simple and easy to build, and the test cost can be saved.

Description

Technical Field

[0001] This disclosure relates to the technical field of aerial remote sensing imaging, and in particular to a detection system and method for a linear array camera stabilization device. Background Technology

[0002] Airborne line array cameras are widely used in the field of airborne remote sensing imaging technology. When performing remote sensing imaging tasks, line array cameras need to be installed on airborne remote sensing stabilization devices to provide a stable imaging environment and ensure that the quality of the line array images meets the application standards.

[0003] When using a line scan camera for imaging, the object distance is typically greater than one kilometer. Therefore, setting up an experimental environment for a line scan camera is difficult and requires significant experimental costs. Summary of the Invention

[0004] This disclosure provides a detection system and method for a linear array camera stabilization device, which reduces the cost of constructing an experimental environment for linear array cameras.

[0005] In a first aspect, embodiments of this disclosure provide a detection system for a line scan camera stabilization device, the detection system including a stabilization device;

[0006] A linear array camera is fixed on the stabilizing device, and the stabilizing device is fixed on the exciter; the linear array camera is electrically connected to a processing device.

[0007] A collimator is provided in front of the line scan camera, and a reticle is fixed to the end of the collimator away from the line scan camera. A light source is provided on the reticle.

[0008] Preferably, the lens of the line scan camera is at the same horizontal level as the central axis of the collimator.

[0009] Preferably, the line array camera includes a TDICCD camera and an optical lens.

[0010] Secondly, embodiments of this disclosure provide a method for detecting a line scan camera stabilization device, the method comprising:

[0011] The stabilizing device is fixed to the vibrator, and the linear array camera is fixed to the stabilizing device. The linear array camera includes a TDICCD camera and an optical lens.

[0012] The reticle is mounted on the collimator, and the lens of the line scan camera is at the same horizontal level as the central axis of the collimator, which is equipped with a light source.

[0013] Turn on the light source on the collimator to generate a parallel beam of light so as to acquire the first image generated by the line scan camera in a stable state.

[0014] Turn on the exciter and the stabilizing device, and acquire the second image generated by the line scan camera under vibration.

[0015] Based on the first image and the second image, the stability performance of the stabilizing device is determined.

[0016] Preferably, determining the stability performance of the stabilization device based on the first image and the second image includes:

[0017] The first angle between the line scan camera and the reticle in a stable state is determined based on the first width of the imaging result in the first image.

[0018] The second angle between the line scan camera and the reticle under vibration is determined based on the second width of the imaging result in the second image.

[0019] The stability performance of the stabilizing device is determined based on the difference between the second angle and the first angle.

[0020] Preferably, determining the stability performance of the stabilizing device based on the difference between the second angle and the first angle includes:

[0021] The target difference interval is determined in multiple difference intervals based on the difference between the second angle and the first angle, and each of the multiple difference intervals corresponds to a stability performance level;

[0022] The stability performance level of the stabilizing device is determined by the stability performance level corresponding to the target difference range.

[0023] Preferably, the first angle is determined based on the following formula:

[0024]

[0025] Where θ1 is the first angle, h1 is the first width, x is the width of the reticle, and y is the width of the TDICCD camera;

[0026] The second angle is determined based on the following formula:

[0027]

[0028] Where θ2 is the second angle, h2 is the second width, x is the width of the reticle, and y is the width of the TDICCD camera.

[0029] According to embodiments of this disclosure, a line scan camera is used to image under both stable and vibrating conditions via a collimator and a reticle. This allows for the determination of the angle between the line scan camera and the reticle under stable and vibrating conditions based on the width of the imaged images under these conditions. The stability performance of the stabilization device can then be determined based on the difference between the two angles. This disclosure utilizes a collimator, reticle, and vibrator to test the stability performance of the stabilization device. The experimental environment is simple and easy to set up, saving on testing costs.

[0030] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure, and are not intended to unduly limit this disclosure.

[0032] Figure 1 This is a schematic diagram of a detection system for a line scan camera stabilization device according to an exemplary embodiment;

[0033] Figure 2 This is a flowchart illustrating a method for detecting a line scan camera stabilization device according to an exemplary embodiment. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions of this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings.

[0035] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0036] This disclosure provides a schematic diagram of a detection system for a line scan camera stabilization device, as shown in the embodiments below. Figure 1 As shown, the detection system includes a stabilizing device;

[0037] A line scan camera is fixed on a stabilizing device, which is also fixed to an exciter. The line scan camera is electrically connected to a processing device. A collimator is positioned in front of the line scan camera, and a reticle is fixed to the end of the collimator away from the line scan camera. A light source is positioned on the reticle.

[0038] According to embodiments of this disclosure, the lens of the line scan camera is at the same horizontal level as the central axis of the collimator; the line scan camera includes a TDICCD camera and an optical lens.

[0039] In practical applications, the number of reticles can be set according to specific implementation requirements, and this embodiment does not limit the number of reticles; at the same time, the mounting angle of the reticle on the collimator can be set randomly, and this embodiment does not specifically limit the mounting angle of the reticle on the collimator. In this embodiment, the mounting angle of the reticle on the collimator can be 30 degrees or 45 degrees.

[0040] According to embodiments of this disclosure, the processing device may include a terminal device, which may include a mobile phone, a tablet computer, a server, etc.

[0041] Embodiments of this disclosure also provide a method for detecting a line scan camera stabilization device, such as... Figure 2 As shown, the detection method includes the following steps:

[0042] S101, the stabilizing device is fixed to the vibrator, and the line scan camera is fixed to the stabilizing device. The line scan camera includes a TDICCD camera and an optical lens.

[0043] S102, the reticle is mounted on the collimator, and the lens of the line scan camera is at the same horizontal level as the central axis of the collimator. A light source is set on the collimator.

[0044] S103, turn on the light source on the collimator to make the collimator generate a parallel beam of light in order to acquire the first image generated by the line scan camera in a stable state.

[0045] S104, turn on the exciter and stabilization device, and acquire the second image generated by the line scan camera under vibration.

[0046] S105, based on the first image and the second image, determine the stability performance of the stabilizing device.

[0047] First, the stabilizing device is fixed to the vibrator, and then the line scan camera is fixed to the stabilizing device. In this embodiment, the line scan camera includes a TDICCD camera and an optical lens.

[0048] In this embodiment, the stabilization device may include a three-axis autonomous stabilization platform or similar devices, and the exciter can cause the stabilization device to vibrate.

[0049] Next, the reticle is mounted on the collimator with the light source, and the lens of the line scan camera is aligned with the central axis of the collimator at the same horizontal level.

[0050] In this embodiment, the angle between the reticle and the vertical direction is 30 degrees or 45 degrees. In practical applications, the number of reticles can be set according to specific implementation requirements, and this embodiment does not limit the number of reticles; at the same time, the installation angle of the reticle on the collimator can be set randomly, and this embodiment does not specifically limit the installation angle of the reticle on the collimator.

[0051] After all the devices are fixed in place, the light source on the collimator can be turned on to generate a parallel beam of light, so as to obtain the first image generated by the line scan camera in a stable state; then, the exciter and stabilization device are turned on to obtain the second image generated by the line scan camera in a vibrating state.

[0052] Finally, the stability performance of the stabilizing device can be determined based on the first and second images.

[0053] In this embodiment, a first angle between the line scan camera and the reticle in a stable state can be determined based on the first width of the imaging result in the first image; then, a second angle between the line scan camera and the reticle in a vibrating state can be determined based on the second width of the imaging result in the second image; finally, the stability performance of the stabilization device is determined based on the difference between the second angle and the first angle.

[0054] When determining the stability performance of a stabilizing device based on the difference between a second angle and a first angle, a target difference range is determined from multiple difference ranges based on the difference between the second angle and the first angle. Each of these difference ranges corresponds to a stability performance level. The stability performance level of the stabilizing device is then determined by the stability performance level corresponding to the target difference range. It should be noted that the smaller the difference between the second angle and the first angle, the better the stability performance of the stabilizing device.

[0055] In practical applications, multiple difference ranges can be set. For example, difference ranges can include 0–5 degrees, 5–10 degrees, 10–15 degrees, and 15–20 degrees. Correspondingly, the number of stability performance levels can be determined by the number of difference ranges. For example, stability performance levels can include Level 1, Level 2, Level 3, and Level 4. Specifically, the 0–5 degree difference range can correspond to Level 1, the 5–10 degree difference range to Level 2, the 10–15 degree difference range to Level 3, and the 15–20 degree difference range to Level 4.

[0056] Based on the above embodiments, if the difference between the second angle and the first angle is 3 degrees, then 0 to 5 degrees is the corresponding target difference range, and accordingly, the stability performance level of the stabilizing device is level one.

[0057] It should be noted that the difference range and stability performance level in the embodiments of this disclosure are only illustrative embodiments. The difference range and stability performance level can be specifically set according to specific implementation needs.

[0058] In the above embodiment, assuming θ1 (0 < θ1 < π) is the first angle, h1 is the first width, x is the width of the reticle, and y is the width of the TDICCD camera, the first width can be represented by the following formula (1):

[0059]

[0060] The first angle is determined based on the following formula (2):

[0061]

[0062] Assuming θ2 (0 < θ2 < π) is the second angle, h2 is the second width, x is the width of the reticle, and y is the width of the TDICCD camera, then the second width can be expressed by the following formula (3):

[0063]

[0064] The second angle is determined based on the following formula (4):

[0065]

[0066] The difference between the first angle and the second angle can be determined by the following formula (5):

[0067]

[0068] Where θ3 is the difference between the first angle and the second angle.

[0069] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0070] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A linear array camera stabilizing device detection system characterized by, The detection system includes a stabilization device; A linear array camera is fixed on the stabilizing device, and the stabilizing device is fixed on the exciter; the linear array camera is electrically connected to a processing device. A collimator is provided in front of the line scan camera, and a reticle is fixed to the end of the collimator away from the line scan camera. A light source is provided on the reticle. The processing device is specifically used for: Acquire a first image generated by the line scan camera in a stable state, and a second image generated in a vibrating state; The first angle between the line scan camera and the reticle in a stable state is determined based on the first width of the imaging result in the first image. The second angle between the line scan camera and the reticle under vibration is determined based on the second width of the imaging result in the second image. The stability performance of the stabilizing device is determined based on the difference between the second angle and the first angle. The calculation of the first angle and the second angle is based on the width of the reticle and the width of the TDICCD camera in the line scan camera.

2. In the detection system according to claim 1, the lens of the line scan camera and the central axis of the collimator are at the same horizontal height.

3. The detection system of claim 1, wherein, The line array camera includes a TDICCD camera and an optical lens.

4. A method for detecting a stabilization device in a linear scan camera, characterized in that, The method includes: The stabilizing device is fixed to the vibrator, and the linear array camera is fixed to the stabilizing device. The linear array camera includes a TDICCD camera and an optical lens. The reticle is mounted on the collimator, and the lens of the line scan camera is at the same horizontal level as the central axis of the collimator, which is equipped with a light source. Turn on the light source on the collimator to generate a parallel beam of light so as to acquire the first image generated by the line scan camera in a stable state. Turn on the exciter and the stabilizing device, and acquire the second image generated by the line scan camera under vibration. Based on the first image and the second image, determine the stability performance of the stabilizing device; Determining the stability performance of the stabilization device based on the first image and the second image includes: The first angle between the line scan camera and the reticle in a stable state is determined based on the first width of the imaging result in the first image. The second angle between the line scan camera and the reticle under vibration is determined based on the second width of the imaging result in the second image. The stability performance of the stabilizing device is determined based on the difference between the second angle and the first angle. The calculation of the first angle and the second angle is based on the width of the reticle and the width of the TDICCD camera in the line scan camera.

5. The detection method according to claim 4, characterized in that, Determining the stability performance of the stabilizing device based on the difference between the second angle and the first angle includes: The target difference interval is determined in multiple difference intervals based on the difference between the second angle and the first angle, and each of the multiple difference intervals corresponds to a stability performance level; The stability performance level of the stabilizing device is determined by the stability performance level corresponding to the target difference range.

6. The detection method according to claim 4, characterized in that, The first angle is determined based on the following formula: ； in, From the first angle, The first width, The width of the reticle. The width of the TDICCD camera; The second angle is determined based on the following formula: ； in, For the second angle, For the second width, The width of the reticle. This refers to the width of the TDICCD camera.

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