Optical projection leveling device and method

Abstract

The present invention relates to an optical projection leveling device and method, which are used to level a target object. The optical projection leveling device includes: a light source generator, which is used to generate light; a pattern setting component, which is arranged on the light path of the light source generator, and is used to set the shape of the projection pattern formed after the light passes through the pattern setting component; a camera component, which is used to shoot the projection pattern formed on the surface of the target object; a processing module, which is used to obtain result information based on whether the projection pattern in the image shot by the camera component is straight on the surface of the target object; and an output component, which is used to output the result information. The present invention determines whether the target object is placed horizontally based on whether the projection pattern is straight on the surface of the target object. The operation is simple and easy, and it has the advantage of visualization.

Description

Technical Field

[0001] The invention relates to a calibration device, in particular to an optical projection leveling device, and also to an optical projection leveling method. Background Art

[0002] For vehicles equipped with ADAS (Advanced Driver Assistance System), when performing ADAS calibration, it is necessary to ensure that the vehicle and the ADAS calibration equipment are on the same level. Summary of the invention

[0003] Based on this, it is necessary to provide an optical projection leveling device.

[0004] An optical projection leveling device is used to level a target object, comprising: a light source generator, used to generate light; a pattern setting component, arranged on the optical path of the light source generator, used to set the shape of a projection pattern formed after the light passes through the pattern setting component; a camera component, used to photograph the projection pattern formed on the surface of the target object; a processing module, used to obtain result information based on whether the projection pattern in the image photographed by the camera component is straight on the surface of the target object; and an output component, used to output the result information.

[0005] In one of the embodiments, it also includes: a first filter component, arranged in the optical path of the light output of the light source generator, for filtering out light with wavelengths outside a first preset band; a second filter component, arranged in front of the lens of the camera component, for filtering out light with wavelengths outside a second preset band to prevent light of these wavelengths from entering the lens, and the second preset band includes the first preset band.

[0006] In one embodiment, the first preset wavelength band and the second preset wavelength band are wavelength bands to which the camera assembly can be sensitive.

[0007] In one embodiment, the first preset band of the first filter component is adjustable, the second preset band of the second filter component is adjustable, the processing module is used to adjust the first preset band and the second preset band, and the processing module adjusts the band to the second preset band including the first preset band when the optical projection leveling device is working.

[0008] In one of the embodiments, a projection adjuster is further included to adjust the clarity of the projection pattern on the surface of the target object.

[0009] In one embodiment, the pattern setting component includes a grating component.

[0010] In one embodiment, the output component includes a display component, and the result information includes a determination result of whether the target object is placed horizontally.

[0011] In one of the embodiments, an interactive component is also included, and the interactive component is used for users to perform interactive operations.

[0012] In one embodiment, the target object is a vehicle.

[0013] In one of the embodiments, the optical projection leveling device is applied to an ADAS calibration device.

[0014] The optical projection leveling device can judge whether the target object is placed horizontally according to whether the projection pattern is straight on the surface of the target object. The operation is simple and easy, and the device has the advantage of visualization.

[0015] It is also necessary to provide an optical projection leveling method, comprising:

[0016] The optical projection leveling device as described in any of the aforementioned embodiments is arranged on a levelable support; the optical projection leveling device placed on the levelable support is adjusted to be horizontal; a projection pattern is formed on the surface of a target object by the optical projection leveling device; and whether the target object is placed horizontally is determined based on whether the projection pattern is straight on the surface of the target object.

[0017] In one of the embodiments, the optical projection leveling device further includes a projection adjuster, and the method further includes a step of adjusting the clarity of the projection pattern on the surface of the target object by the projection adjuster.

[0018] In one embodiment, the optical projection leveling device also includes: a first filter component, arranged in the optical path of the light source generator, for filtering out light with wavelengths outside a first preset band, and the first preset band of the first filter component is adjustable; a second filter component, arranged in front of the lens of the camera component, for filtering out light with wavelengths outside a second preset band to prevent light of these wavelengths from entering the lens, and the second preset band of the second filter component is adjustable; wherein the second preset band includes the first preset band, and the method also includes a step in which the processing module adjusts the first preset band and the second preset band to obtain imaging under light of different wavelengths, and the second preset band after adjustment includes the first preset band after adjustment.

[0019] It is also necessary to provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps in the method of any of the above embodiments are implemented.

[0020] It is also necessary to provide a computer device, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the steps in the method described in any of the above embodiments are implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to better describe and illustrate the embodiments and / or examples of the inventions disclosed herein, reference may be made to one or more drawings. The additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the disclosed inventions, the embodiments and / or examples currently described, and the best modes of these inventions currently understood.

[0022] Figure 1 is a structural block diagram of an optical projection leveling device in one embodiment;

[0023] Figure 2 is a schematic diagram of a projection pattern formed by an optical projection leveling device;

[0024] Figure 3a is a schematic diagram of a projection pattern on a target object when the target object and the optical projection leveling device are on the same plane in one embodiment, Figure 3b is a schematic diagram of a projection pattern on a target object when the target object is tilted relative to the optical projection leveling device;

[0025] Figure 4 is a structural block diagram of an optical projection leveling device in another embodiment;

[0026] Figure 5 Detailed description of the invention The figure is a flow chart of an optical projection leveling method in one embodiment. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] It should be understood that when an element or layer is referred to as being "on, adjacent to, connected to or coupled to other elements or layers, it may be directly on, adjacent to, connected to or coupled to other elements or layers, or there may be intervening elements or layers. In contrast, when an element is referred to as being "directly on, directly adjacent to, directly connected to or directly coupled to other elements or layers, there may be no intervening elements or layers. It should be understood that, although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer or part discussed below may be represented as a second element, component, region, layer or part.

[0030] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present invention. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0031] The optical projection leveling device provided in the present application is used to level a target object. Figure 1 1 is a block diagram of an optical projection leveling device in an embodiment. In this embodiment, the optical projection leveling device includes an optical projection component 10, a projection image processing component 20 and an auxiliary component 30. The optical projection component 10 includes a light source generator 12 and a pattern setting component 14. The light source generator 12 can convert energy such as electrical energy into a light source to form visible light, invisible light or laser (not limited to red laser, green laser, infrared, ultraviolet, etc.) of different wavelengths. Laser can be used to obtain a better projection effect. In one embodiment of the present application, the light emission wavelength of the light source generator 12 is adjustable.

[0032] The pattern setting component 14 is disposed on the optical path of the light source generator 12, and is used to set the shape of the projection pattern formed after the light passes through the pattern setting component 14. In one embodiment of the present application, the pattern setting component 14 includes a grating component. After the light generated by the light source generator 12 passes through the grating, it is projected on the surface of the target object to form different patterns, such as regular (such as grids, concentric circles, dot matrix) and irregular (such as text and other special-shaped patterns) various projection patterns, refer to Figure 2 .

[0033] The projection image processing component 20 includes a camera assembly 24 and a processing module 22. The camera assembly 24 forms an image based on light and is used to shoot the projection pattern formed on the surface of the target object. A camera assembly 24 that can form an image based on visible light and / or invisible light can be selected. The camera assembly 24 transmits the captured image information to the processing module 22, and the processing module 22 obtains result information based on whether the projection pattern is straight on the surface of the target object. The processing module 22 includes a processor.

[0034] See also Figure 3a and Figure 3b , in the figure, the projection pattern is a cross, Figure 3a The projection pattern is aligned on the surface of the target object 40, so it can be determined that the target object and the optical projection leveling device are on the same plane; Figure 3b The projection pattern is skewed on the surface of the target object 40 , so it can be determined that the target object is skewed relative to the optical projection leveling device.

[0035] The auxiliary component 30 includes an output component 32. The output component 32 is used to output the result information obtained by the processing module 22. In one embodiment of the present application, the output component 32 outputs or displays the result information (that is, the output component 32 includes a display component). The output component 32 outputs in a manner including but not limited to an indicator light, a network, a USB, etc., and the display manner includes but is not limited to an LCD (liquid crystal display), an HDMI (high-definition multimedia interface) screen projection, etc.

[0036] See also Figure 4 In one embodiment of the present application, the auxiliary component 30 further includes an interactive component 34. The interactive component 34 is used for users to perform interactive operations, and the interactive methods include but are not limited to: buttons / knobs, touch, etc. The processing module 22 performs image / graphic analysis on the image information (projected image of the target object surface) captured by the camera component 24, and displays the results through the output component 32, and completes user interaction through the interactive component 34. Further, the processing module 22 can be used to:

[0037] 1. Image acquisition and preliminary processing.

[0038] 2. Image recognition and image analysis.

[0039] 3. Output the result data to the output component 32 (including but not limited to indicator light, network, USB, etc.), which can be output to the display component for display. The display content is not limited to: original camera image, projected image, processed image, processing result, reference correction value, etc.

[0040] 4. Cooperate with the interactive component 34 to perform interactive processing, including but not limited to: parameter configuration, user operation instructions, identification point selection, display mode switching, etc.

[0041] The optical projection leveling device can judge whether the target object is placed horizontally according to whether the projection pattern is straight on the surface of the target object. The operation is simple and easy, and the device has the advantage of visualization.

[0042] exist Figure 4 In the illustrated embodiment, the optical projection component 10 further includes a first filter assembly 16. The first filter assembly 16 is disposed on the light path of the light source generator 12, and is used to filter out light of wavelengths outside the first preset wavelength band. The first filter assembly 16 is provided to obtain a clearer projection pattern. It is understandable that the first preset wavelength band should be a wavelength band that the camera assembly 24 can sense.

[0043] In one embodiment of the present application, the projection image processing component 20 further includes a second filter component 26. The second filter component 26 is disposed in front of the lens of the camera component 24, and is used to filter out light with wavelengths outside the second preset wavelength band, thereby preventing light outside the second preset wavelength band from entering the lens of the camera component 24. The second preset wavelength band should include the first preset wavelength band, so that the light emitted by the light source generator 12 can pass through the second filter component 26 after being reflected by the target object. It can be understood that the second preset wavelength band should be a wavelength band that the camera component 24 can be sensitive to.

[0044] In one embodiment of the present application, the first filter component 16 and the second filter component 26 support the switching of multiple filter modes, that is, the wavelength range of the first preset band and the wavelength range of the second preset band are adjustable. In one embodiment of the present application, the first preset band and the second preset band are adjusted by the processing module 22. In one embodiment of the present application, the adjustment of the first preset band and the second preset band should be linked, that is, after each adjustment, it should be ensured that the second preset band contains the first preset band. When leveling the same target object, by adjusting the first preset band and the second preset band, the imaging effect under different light wavelengths can be obtained, which can improve the accuracy of the result. Due to environmental interference during projection and imaging of the optical projection leveling device, different ambient lights have different light bands. If there is doubt about the recognition of the projection pattern under the current first preset band and the second preset band or when it cannot be accurately judged, the filter component can be switched (that is, the first preset band and the second preset band are switched to another wavelength or band).

[0045] In one embodiment of the present application, the processing module 22 can also automatically adjust the background color of the imaging according to different first preset bands and second preset bands, so that the imaging effect can be seen more quickly and accurately.

[0046] exist Figure 4 In the illustrated embodiment, the optical projection component 10 further includes a projection regulator 18. The projection regulator 18 is used to adjust the clarity of the projection pattern on the surface of the target object. The projection regulator 18 can be arranged between the light source generator 12 and the first filter assembly 16. In one embodiment of the present application, the processing module 22 can automatically control the projection regulator 18, thereby automatically adjusting the clarity of the projection pattern on the surface of the target object.

[0047] exist Figure 4 In the illustrated embodiment, the auxiliary component 30 further includes a power supply assembly 36. The power supply assembly 36 is used to supply power to various components in the optical projection leveling device, and supports multiple types of power inputs.

[0048] In one embodiment of the present application, the optical projection leveling device is used to level a vehicle, and an object (such as a hood or a car window) with a bilaterally symmetrical or highly recognizable shape of the vehicle is used for projection, and whether the target object is placed horizontally is determined based on whether the projection pattern is straight on the surface of the target object. Furthermore, the optical projection leveling device is used in an ADAS (Advanced Driver Assistance System) calibration device to determine whether the vehicle and the ADAS device are on the same horizontal plane.

[0049] The present application accordingly provides an optical projection leveling method. Figure 5 1 is a flow chart of an optical projection leveling method in one embodiment, comprising the following steps:

[0050] S510, placing an optical projection leveling device on a leveling support.

[0051] The leveling support may be a bracket or the like.

[0052] S520, adjusting the optical projection leveling device placed on the leveling support to be horizontal.

[0053] The method for determining whether the optical projection leveling device is level can be carried out by methods known in the art, such as a level bubble, suspended gravity, etc., which will not be described in detail here.

[0054] S530, forming a projection pattern on the surface of the target object by using an optical projection leveling device.

[0055] Optical projection leveling equipment includes:

[0056] A light source generator, for generating light;

[0057] A pattern setting component is arranged on the optical path of the light source generator, and is used to set the shape of the projection pattern formed after the light passes through the pattern setting component;

[0058] The camera assembly is used to shoot the projection pattern formed on the surface of the target object.

[0059] Step S530 After the optical projection leveling device is adjusted to a horizontal level, the optical projection leveling device is turned on, and a suitable projection pattern, wavelength, etc. are selected for projection, so as to form a projection pattern on the surface of the target object. In one embodiment of the present application, the optical projection leveling device further includes an interactive component. The interactive component is used for interactive operation by the user, and the user can select a projection pattern, wavelength, etc. for projection through the interactive component. The interactive method includes but is not limited to: buttons / knobs, touch, etc.

[0060] S540: Determine whether the target object is placed horizontally according to whether the projection pattern is straight on the surface of the target object.

[0061] The optical projection leveling equipment also includes:

[0062] A processing module, used for obtaining result information according to whether the projection pattern in the image taken by the camera assembly is straight on the surface of the target object;

[0063] The output component is used to output the result information.

[0064] The processing module identifies various situations such as deformation of the projection pattern based on the image information captured by the camera component, and determines whether it is symmetrical.

[0065] In one embodiment of the present application, the output component includes a display component, which can display the result information, and the user can correct the placement of the target object, the optical projection leveling device or the ADAS device according to the result information.

[0066] In one embodiment of the present application, the optical projection leveling device further includes a projection adjuster, and between steps S530 and S540 there is further included a step of adjusting the clarity of the projection pattern on the surface of the target object by the projection adjuster.

[0067] In one embodiment of the present application, the optical projection leveling device further includes:

[0068] A first filter component is arranged on the optical path of the light source generator, and is used to filter out light with wavelengths outside a first preset wavelength band, and the first preset wavelength band of the first filter component is adjustable;

[0069] A second filter component is disposed in front of the lens of the camera component, and is used to filter out light with wavelengths outside a second preset wavelength band to prevent the light with these wavelengths from entering the lens of the camera component, and the second preset wavelength band of the second filter component is adjustable;

[0070] The second preset band includes the first preset band, and the optical projection leveling method further includes a step in which a processing module adjusts the first preset band and the second preset band to obtain imaging under light of different wavelengths, and the second preset band after adjustment includes the first preset band after adjustment.

[0071] It should be understood that, although the various steps in the flowchart of the present application are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the present application may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0072] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0073] The present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps in the method described in any of the above embodiments are implemented.

[0074] The present application also provides a computer device, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the steps in the method described in any of the above embodiments are implemented.

[0075] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", "ideal embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0076] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An optical projection leveling device, used for leveling a target object, characterized in that: The optical projection leveling device is applied to an ADAS calibration device, and the optical projection leveling device comprises: A light source generator, for generating light; A pattern setting component is arranged on the optical path of the light source generator, and is used to set the shape of the projection pattern formed after the light passes through the pattern setting component; A camera assembly, used for photographing the projection pattern formed on the surface of the target object; A processing module, used to obtain result information according to whether the projection pattern in the image taken by the camera assembly is straight on the surface of the target object; if the projection pattern is straight on the surface of the target object, the target object and the optical projection leveling device are on the same plane; The output component is used to output the result information.

2. The optical projection leveling device according to claim 1, characterized in that: Also includes: A first filter component is arranged on the optical path of the light source generator, and is used to filter out light with wavelengths outside the first preset wavelength band; The second filter component is arranged in front of the lens of the camera component, and is used for filtering out the light with wavelengths outside the second preset wavelength band to prevent the light with these wavelengths from entering the lens, and the second preset wavelength band includes the first preset wavelength band.

3. The optical projection leveling device according to claim 2, characterized in that: The first preset band of the first filter component is adjustable, the second preset band of the second filter component is adjustable, the processing module is used to adjust the first preset band and the second preset band, and the processing module adjusts the band to the second preset band including the first preset band when the optical projection leveling device is working.

4. The optical projection leveling device according to claim 1, characterized in that: It also includes a projection adjuster for adjusting the clarity of the projection pattern on the surface of the target object.

5. The optical projection leveling device according to claim 1, characterized in that: The pattern setting assembly includes a grating assembly.

6. The optical projection leveling device according to claim 1, characterized in that: The output component includes a display component, and the result information includes a judgment result of whether the target object is placed horizontally.

7. The optical projection leveling device according to claim 1, characterized in that: The target object is a vehicle.

8. An optical projection leveling method, characterized in that: include: Arranging the optical projection leveling device as claimed in claim 1 on a leveling support; Adjusting the optical projection leveling device placed on the leveling support to be horizontal; Forming a projection pattern on the surface of the target object by means of the optical projection leveling device; Whether the target object is placed horizontally is determined based on whether the projection pattern is straight on the surface of the target object.

9. The optical projection leveling method according to claim 8, characterized in that: The optical projection leveling device further includes a projection adjuster, and the method further includes a step of adjusting the clarity of the projection pattern on the surface of the target object by the projection adjuster.

10. The optical projection leveling method according to claim 8, characterized in that: The optical projection leveling device also includes: A first filter component is arranged on the optical path of the light source generator, and is used to filter out light with wavelengths outside a first preset wavelength band, and the first preset wavelength band of the first filter component is adjustable; A second filter component is disposed in front of the lens of the camera component, and is used to filter out light with wavelengths outside a second preset wavelength band to prevent the light with these wavelengths from entering the lens, and the second preset wavelength band of the second filter component is adjustable; The second preset band includes the first preset band, and the method further includes a step in which a processing module adjusts the first preset band and the second preset band to obtain imaging under light of different wavelengths, and the adjusted second preset band includes the adjusted first preset band.

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