Functional glass imaging detection method, device and system

Abstract

This application provides a method, apparatus, and system for imaging detection of functional glass. The method includes projecting a preset pattern onto the functional glass; the preset pattern is capable of being projected onto different interfaces of the functional glass, forming at least a first projected image, a second projected image, and a third projected image; acquiring a first image at a first detection position, including at least the first and second projected images, and a second image, including at least the first, second, and third projected images; the first image is a monochrome image, and the second image is a color image; and color information parameters of the first and / or third projected images are obtained by compensating the second image using the first image. The functional glass imaging detection method, apparatus, and system provided by this application are beneficial for accurately detecting the imaging color information of functional glass.

Description

Technical Field

[0001] This application relates to the field of imaging detection technology, specifically to a method, apparatus, and system for imaging detection of functional glass. Background Technology

[0002] In the automotive industry, the application of head-up displays (HUDs) on glass is becoming increasingly common. Simultaneously, it is crucial to incorporate coatings into the glass to enhance its optical and physical properties. However, the difference between the refractive index of the coating and that of the glass can affect the HUD's display quality, particularly color reproduction. Therefore, achieving effective imaging and detection of such glass has become a key technical challenge. Summary of the Invention

[0003] This application provides a method, apparatus, and system for imaging detection of functional glass, which is beneficial for accurately detecting the imaging color information of functional glass.

[0004] On the one hand, this application provides a method for imaging and detecting functional glass, including:

[0005] A preset pattern is emitted toward the functional glass; the preset pattern is reflective at different interfaces of the functional glass and forms at least a first projected image, a second projected image, and a third projected image.

[0006] At the first detection position, a first image including at least the first projection image and the second projection image, and a second image including at least the first projection image, the second projection image and the third projection image are acquired respectively; wherein, the first image is a monochrome image and the second image is a color image;

[0007] The color information parameters of the first projected image and / or the third projected image are obtained by compensating the second image using the first image.

[0008] On the other hand, this application also provides a functional glass imaging detection device, including a light source, a monochrome camera, a color camera, and a processor, wherein the processor is electrically connected to the monochrome camera and the color camera, and the functional glass imaging detection device is used to implement the functional glass imaging detection method.

[0009] Furthermore, this application also provides a functional glass imaging inspection system, including the functional glass to be inspected and the functional glass imaging inspection device.

[0010] The functional glass imaging detection method provided in this application emits a preset pattern onto the functional glass. Since the preset pattern can be reflected at different interfaces of the functional glass and form at least a first projection image, a second projection image, and a third projection image, a first image including at least the first projection image and the second projection image is obtained at a first detection position, and a second image including at least the first projection image, the second projection image, and the third projection image is obtained. The first image is a monochrome image and the second image is a color image. In this way, the second image can be compensated based on the relevant information of the first projection image and / or the second projection image in the first image, so that the first projection image and / or the second projection image in the second image are weakened or even eliminated. Therefore, the color information parameters of the first projection image and / or the third projection image can be obtained based on the compensated second image, thereby realizing the color detection of the first projection image and / or the third projection image. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below.

[0012] Figure 1 A schematic flowchart of a functional glass imaging detection method provided in an embodiment of this application;

[0013] Figure 2 A schematic diagram of a preset pattern provided for an embodiment of this application;

[0014] Figure 3 A schematic diagram of a standard image provided for an embodiment of this application;

[0015] Figure 4 for Figure 1 The flowchart of the functional glass imaging detection method shown includes steps S301 and S302 in step S30 and steps S40 including steps S401, S402 and S403 in step S401.

[0016] Figure 5 A schematic diagram of a compensated second image provided in an embodiment of this application;

[0017] Figure 6 for Figure 1 The functional glass imaging detection method shown also includes a flowchart of step S50.

[0018] Figure 7 for Figure 1 The illustrated functional glass imaging detection method also includes a flowchart of step S60.

[0019] Figure 8 for Figure 1The functional glass imaging detection method shown also includes a flowchart of step S10.

[0020] Figure 9 for Figure 1 The illustrated functional glass imaging detection method also includes a flowchart of step S70.

[0021] Figure 10 for Figure 9 The flowchart of step S70 in the functional glass imaging detection method shown includes steps S701 and S702.

[0022] Figure 11 This is a schematic diagram of the structure of the functional glass imaging detection device provided in the embodiments of this application;

[0023] Figure 12 This is a schematic diagram of the structure of the functional glass imaging detection system provided in the embodiments of this application. Detailed Implementation

[0024] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the embodiments described in this application are only a part of the embodiments, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without creative effort are within the protection scope of this application.

[0025] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0026] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, such as: an apparatus or system comprising one or more components is not limited to the one or more components listed, but may optionally include one or more components not listed but inherent to the exemplified product, or one or more components that it should have based on the described function; a method comprising one or more steps is not limited to the steps listed, but may optionally include one or more steps not listed but implied by the exemplified steps.

[0027] like Figure 1 As shown, Figure 1This is a schematic flowchart illustrating a functional glass imaging detection method provided in an embodiment of this application. In one possible application scenario, the functional glass can be a windshield of an automobile. The functional glass includes a glass body and a functional layer. The functional layer includes, but is not limited to, a coating layer, a dimming layer, and a color layer. When the functional layer is a coating layer, it includes, but is not limited to, an infrared reflective coating layer and an electrically heated coating layer. The functional glass imaging detection method includes, but is not limited to, the following steps S20, S30, and S40.

[0028] S20: Emit a preset pattern to the functional glass; the preset pattern is capable of being reflected at different interfaces of the functional glass and forming at least a first projected image, a second projected image and a third projected image;

[0029] S30: At the first detection position, acquire a first image that includes at least the first projection image and the second projection image, and a second image that includes at least the first projection image, the second projection image and the third projection image; wherein, the first image is a monochrome image and the second image is a color image;

[0030] S40: After compensating the second image using the first image, obtain the color information parameters of the first projected image and / or the third projected image.

[0031] Please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of a preset pattern provided in an embodiment of this application. Figure 3 This is a schematic diagram of a standard pattern provided in an embodiment of this application. The preset pattern in step S20, "emitting a preset pattern to the functional glass," can be a pre-deformed standard pattern. It is understood that the preset pattern has a certain degree of deformation compared to the standard pattern. The preset pattern can be obtained through simulation. In the functional glass imaging detection method, a preset pattern is emitted to the functional glass to be detected using a preset light source. The deformation of the preset pattern relative to the standard pattern can be determined based on the positional relationship between the light source and the functional glass. In the application scenario of detecting the HUD display effect of a windshield, the positional relationship between the light source and the functional glass can correspond to the positional relationship between the HUD light source and the windshield in the automotive industry. In other words, the scene projected by the light source onto the functional glass can simulate the actual scene projected by the HUD light source onto the windshield in the automotive industry. This application does not specifically limit the size, shape, or color of the preset pattern.

[0032] The functional glass includes at least a first interface, a second interface, and a third interface. A preset pattern is reflected on the first interface of the functional glass to form a first projected image. The preset pattern is reflected on the second interface of the functional glass to form a second projected image. The preset pattern is reflected on the third interface of the functional glass to form a third projected image. One of the first, second, and third interfaces can be the interface formed between the inner surface of the functional glass and the air; another of the first, second, and third interfaces can be the interface formed between the outer surface of the functional glass and the air; and yet another of the first, second, and third interfaces can be the interface formed between the glass body and the functional layer of the functional glass. In the application scenario of detecting the HUD display effect of the windshield, the inner surface of the functional glass refers to the surface of the windshield facing the interior of the vehicle, and the outer surface of the functional glass refers to the surface of the windshield facing the exterior of the vehicle.

[0033] Since the preset pattern is emitted at different interfaces of the functional glass to form a first projected image, a second projected image, and a third projected image, the first projected image, the second projected image, and the third projected image may exhibit different colors. Therefore, this application provides a functional glass imaging detection method that can be used to detect the color of at least one of the first projected image, the second projected image, and the third projected image. In the following embodiments, unless otherwise specified, the first projected image is used as the primary image, and the second projected image and the third projected image are different secondary images to describe in detail the functional glass imaging detection method provided in this application. Among them, the secondary image can also be understood as a ghost image in some embodiments. When the functional glass has three or more interfaces, the imaging of the functional glass may produce double ghost images or multiple ghost images.

[0034] like Figure 4 As shown, step S30 may include steps S301 and S302.

[0035] S301: Take a picture at the first detection position using a monochrome camera to obtain a first image that includes at least the first projected image and the second projected image;

[0036] S302: Take a picture at the first detection position using a color camera to obtain a second image that includes at least the first projected image, the second projected image, and the third projected image.

[0037] Understandably, the first image acquired by a monochrome camera is a monochrome image, and the second image acquired by a color camera is a color image. Since both the monochrome and color cameras capture images from the same first detection position, the positional relationships between the first and second projected images in the first image and between the first and second projected images in the second image are identical. Specifically, the first and second projected images in the first image may not overlap, or may partially overlap. Similarly, the first and third projected images in the second image may not overlap, or may partially overlap; the first and third projected images may not overlap, or may partially overlap, or may completely overlap; and the second and third projected images may partially overlap.

[0038] In one possible embodiment, the monochrome camera can move in step S301, and the color camera can move in step S302. During functional glass imaging detection, the monochrome camera can be controlled to move to a first detection position to acquire a first image. The methods by which the monochrome camera moves to the first detection position include, but are not limited to, moving and / or rotating the monochrome camera from its original position to the first detection position. Similarly, during functional glass imaging detection, the color camera can be controlled to move to the first detection position to acquire a second image. The methods by which the color camera moves to the first detection position include, but are not limited to, moving and / or rotating the color camera from its original position to the first detection position.

[0039] This application does not impose a specific limitation on the order in which the first image and the second image are acquired in step S30. The following embodiments use the example of acquiring the first image first, followed by the second image. Of course, in other possible embodiments, the second image can be acquired first, followed by the first image.

[0040] In applications that test the HUD display effect on windshields, the positional relationship between the first detection position and the functional glass corresponds to the positional relationship between a driver's eyes and the windshield when in the driver's seat in the automotive industry. In other words, the scene where monochrome or color cameras take pictures at the first detection position can simulate the actual scene in the automotive industry where the human eye views the HUD display image on the windshield.

[0041] In step S40, “using the first image to compensate the second image” includes, but is not limited to, identifying the position and corresponding gray value of the second projected image in the first image, and weakening the second projected image in the second image based on the position and corresponding gray value of the second projected image; or, identifying the position and corresponding gray value of the first projected image and the second projected image in the first image, and weakening the first projected image and the second projected image in the second image based on the position and corresponding gray value of the first projected image and the second projected image.

[0042] Since the first image includes a first projection image and a second projection image, but does not include a third projection image, and the second image includes the first projection image, the second projection image, and the third projection image, the position and corresponding grayscale value of the second projection image can be identified based on the first image. Therefore, based on the identified position and corresponding grayscale value of the second projection image, compensation processing can be performed on the second image, so that there is basically no overlap between the second projection image and the first projection image and the third projection image in the compensated second image. Thus, the color information parameters of the first projection image and / or the third projection image can be obtained based on the compensated second image.

[0043] Step S40, "obtaining color information parameters of the first projected image and / or the third projected image," includes, but is not limited to, obtaining color parameters, brightness parameters, and saturation parameters of the first projected image, and / or obtaining color parameters, brightness parameters, and saturation parameters of the third projected image. Optionally, obtaining color information parameters of the first projected image and / or the third projected image may include obtaining at least one of the following: obtaining the brightness contrast between the third projected image and the first projected image; obtaining the brightness of the first projected image in each visible light color band; obtaining the brightness of the first projected image in the "R," "G," and "B" color channels; obtaining the brightness of the third projected image in each visible light color band; and obtaining the brightness of the third projected image in the "R," "G," and "B" color channels.

[0044] The functional glass imaging detection method provided in this application emits a preset pattern onto the functional glass. Since the preset pattern can be reflected at different interfaces of the functional glass and form at least a first projection image, a second projection image, and a third projection image, a first image including at least the first projection image and the second projection image is obtained at a first detection position, and a second image including at least the first projection image, the second projection image, and the third projection image is obtained. The first image is a monochrome image and the second image is a color image. In this way, the second image can be compensated based on the relevant information of the first projection image and / or the second projection image in the first image, so that the first projection image and / or the second projection image in the second image are weakened or even eliminated. Therefore, the color information parameters of the first projection image and / or the third projection image can be obtained based on the compensated second image, thereby realizing the color detection of the first projection image and / or the third projection image.

[0045] In one possible embodiment, such as Figure 4 As shown, step S40 may include the following steps: S401, S402 and S403.

[0046] S401: Identify the pixel corresponding to the position of the second projected image in the first image, and record the grayscale value of the second projected image.

[0047] S402: Perform compensation processing in the second image to compensate the color channel values ​​calculated from the grayscale values ​​of the second projected image at the corresponding pixels in the second image;

[0048] S403: In the second image after compensation processing, obtain the color information parameters of the first projected image and / or the third projected image.

[0049] Understandably, in this embodiment, step S40 "using the first image to compensate the second image" means identifying the position and corresponding grayscale value of the second projected image in the first image, and weakening the second projected image in the second image based on the position and corresponding grayscale value of the second projected image.

[0050] The identification of the second projected image can be based on a threshold. When the contrast between the second projected image and the first projected image is lower than this threshold, the second projected image can be ignored. For example, if the grayscale value of the first projected image is above 240, and the grayscale value of the second projected image is 10%-50% of that of the first projected image, then it can be deduced that areas with grayscale values ​​between 20 and 120 are typically considered the second projected image, while areas with grayscale values ​​below 20 are considered to have no second projected image.

[0051] Furthermore, a mask can be created using the identified second projected image. The second projected image region in the created mask is distinguished from the remaining regions. When the computational cost of each pixel in the second projected image is high, the grayscale data of the second projected image can also be stored using a sampling method.

[0052] For each pixel in the second image, if it corresponds to a position in the second projected image in the mask, a new RGB value for that pixel is calculated. The new RGB value is obtained by multiplying the original RGB value by an adjustment factor. For example, the new RGB value and the original RGB value satisfy the following relationship:

[0053] CI rgb ′(x,y)=CI rgb (x,y)×(1-ratio(x,y))

[0054] Among them, CI rgb (x,y) represents the RGB values ​​in the second image, and ratio(x,y) is the ratio of the brightness of the second projected image to the brightness of the first projected image. CI rgb′(x,y) are the RGB values ​​of the compensated second image. If color balance needs to be maintained, the adjustment coefficients of the RGB channels can be fine-tuned to ensure the naturalness of the color adjustment in the second image.

[0055] In one possible application scenario, in step S402, "compensation processing is performed on the second image to compensate the color channel values ​​calculated from the grayscale values ​​of the second projected image at the corresponding pixels in the second image," and then the second image is as follows: Figure 5 As shown. Figure 5 Part A represents the third projected image, Part B represents the first projected image, and the side of the first projected image opposite to the third projected image is the second projected image (see Part C for details). In actual detection, the first and second projected images can be white or other colors, and the third projected image can be red or other colors. The first and second projected images have essentially the same color, but differ in brightness. The third projected image has a different color from both the first and second projected images. The second projected image is almost invisible in the compensated second image.

[0056] Furthermore, such as Figure 6 As shown, the functional glass imaging detection method may further include the following step S50.

[0057] S50: Based on the first projected image and the second projected image in the first image, calculate and obtain the relevant parameters of the second projected image.

[0058] The relevant parameters of the second projected image include at least one of the following: the distance between the second projected image and the first projected image, the brightness of the second projected image, and the contrast between the second projected image and the first projected image.

[0059] In this embodiment, the functional glass imaging detection method can also detect the position and color of the second projected image, which is beneficial for analyzing the influence of the second projected image on functional glass imaging.

[0060] Furthermore, the calculation of the distance between the second projected image and the first projected image, and the brightness of the second projected image in step S50, can be used to implement the above step S401.

[0061] Furthermore, such as Figure 7 As shown, the first image also includes a standard image. The functional glass imaging detection method may further include the following step S60.

[0062] S60: Calculate and obtain the distortion parameters of the first projected image using the first projected image in the first image and the standard image.

[0063] The distortion parameters of the first projected image include at least one of the following: rotation amount, aspect ratio, magnification, displacement, and deformation amount.

[0064] Specifically, by obtaining the actual position (position in the first projected image) and nominal position (position in the standard image) of each detection unit (such as a point or line) in the first image, the distortion parameters of the first projected image can be obtained through mathematical calculation.

[0065] The standard image is formed by capturing a preset standard pattern at the first detection position using a monochrome camera. This application does not specify the size or shape of the standard pattern.

[0066] In this embodiment, the functional glass imaging detection method can also detect the distortion of the first projected image, which is beneficial for analyzing the distortion of the first projected image in functional glass imaging.

[0067] The reflection spectral characteristics of the third projected image are different from those of the first and / or second projected images. The first image is obtained by filtering based on the reflection spectral characteristics of the third projected image.

[0068] Understandably, by setting a filter in a monochrome camera based on the reflection spectrum of the functional layer, the first image captured by the monochrome camera can include a first projected image and a second projected image, but not a third projected image. Understandably, the monochrome camera filters out the third projected image during imaging.

[0069] In one possible embodiment, the filter made based on the reflectance spectral characteristics of the third projected image can be a monochromatic bandpass filter. In another possible embodiment, the filter made based on the reflectance spectral characteristics of the third projected image can be a band-specific cutoff filter.

[0070] The functional glass includes an outer glass panel, an inner glass panel, an adhesive layer, and a functional layer. The outer glass panel includes a first surface and a second surface, and the inner glass panel includes a third surface and a fourth surface. The adhesive layer connects the second surface of the outer glass panel and the third surface of the inner glass panel. The functional layer is disposed on at least one of the second surface, the third surface, the fourth surface, and the interior of the adhesive layer. The first projected image is formed by reflecting the preset pattern onto the fourth surface of the functional glass. The second projected image is formed by reflecting the preset pattern onto the first surface of the functional glass. The third projected image is formed by reflecting the preset pattern onto the surface of the functional layer of the functional glass.

[0071] Understandably, the functional glass is laminated glass. The glass body includes an inner glass panel and an outer glass panel stacked together, with a functional layer sandwiched between the inner and outer glass panels. The outer glass panel includes a first surface and a second surface, which are opposite to each other. The inner glass panel includes a third surface and a fourth surface, which are opposite to each other. The surface of the inner glass panel facing away from the outer glass panel forms the fourth surface of the functional glass. The fourth surface of the functional glass is the inner surface of the functional glass. The surface of the outer glass panel facing away from the inner glass panel forms the first surface of the functional glass. The first surface of the functional glass is the outer surface of the functional glass. In one possible embodiment, the functional layer is sandwiched between the second surface of the outer glass panel and the third surface of the inner glass panel. The functional glass also includes an adhesive layer connecting the second surface of the outer glass panel and the third surface of the inner glass panel. The functional layer sandwiched between the second surface of the outer glass panel and the third surface of the inner glass panel can be disposed on at least one of the second surface, the third surface, and the adhesive layer. In another possible embodiment, the functional layer can be disposed on the fourth surface of the inner glass panel. In addition, the functional layer can also be disposed inside the adhesive layer, for example, the functional layer is sandwiched between two adhesive layers.

[0072] The first projected image formed by the reflection of the preset pattern on the fourth surface of the functional glass can be understood as the primary image. The second projected image formed by the reflection of the preset pattern on the first surface of the functional glass can be understood as the first secondary image. The third projected image formed by the reflection of the preset pattern on the surface of the functional layer of the functional glass can be understood as the second secondary image.

[0073] In this embodiment, color information parameters of the first projected image are obtained by compensating the second image using the first image, thereby enabling color detection of the main image. Similarly, color information parameters of the third projected image are obtained by compensating the second image using the first image, enabling color detection of the second image. Obtaining the color detection of the second image is beneficial for analyzing the color influence of the functional layer in functional glass imaging.

[0074] In this embodiment, since the second projected image is formed by secondary reflection from the outer surface of the functional glass, and the reflectivity of the functional glass is relatively stable, it usually does not produce visible color deviations to the incident light. Therefore, color detection of the second projected image does not require color detection. Thus, in the first image, the pixel corresponding to the position of the second projected image is identified, and its grayscale value is recorded. For the corresponding pixel in the second image, the corresponding RGB or other color channel values ​​calculated from the grayscale value are compensated (using reasonable calculation methods such as subtraction, weighted summation, etc.). Other calculation methods, such as calculation after filtering, are also used. The processed second image can retain both the first and third projected images, and the position of the third projected image is very easy to capture; alternatively, only the third projected image can be retained.

[0075] The position of the functional layer within the functional glass affects the imaging process differently. In the above embodiments, for functional glass where the functional layer is located between the inner and outer glass plates of the glass body (i.e., between the second and third surfaces), the third projected image formed by the preset pattern reflected by the functional layer affects the visual effect of the image and causes a certain color deviation. In this case, determining the color-related parameters of the first and / or third projected images can include determining the color of the third projected image, as well as determining the brightness, contrast, and other information between the third and first projected images. For functional glass where the functional layer is located on the surface of the inner glass plate opposite to the outer glass plate (i.e., on the fourth surface), the third projected image formed by the preset pattern reflected by the functional layer basically overlaps with the first projected image, with minimal ghosting, mainly causing color deviation. In this case, determining the color information parameters of the third projected image can include determining the color of the third projected image.

[0076] In addition, such as Figure 8 As shown, the functional glass imaging detection method provided in this application may further include the following step S10.

[0077] S10: Set the functional glass to be tested at the first preset position, set the light source emitting the preset pattern at the first target position, and set the standard pattern at the second target position;

[0078] In one possible embodiment, step S10, "setting the functional glass to be tested at a first preset position," may include: mounting the functional glass to be tested on the glass support of the functional glass imaging detection device.

[0079] In this embodiment, the functional glass and the glass support can remain relatively fixed during a single test. During multiple tests, the glass support can move and / or rotate the functional glass according to specific testing requirements. During each test, the functional glass can be tilted at a preset angle relative to the horizontal reference plane of the functional glass imaging testing device. For example, in an application scenario that tests the HUD display effect of a windshield, the preset angle can be between 20° and 70°.

[0080] Step S10, “Setting a light source for emitting a preset pattern at the first target location,” may include: mounting the light source on the light source bracket of the functional glass imaging detection device.

[0081] In this embodiment, the light source and its support can remain relatively fixed during a single test. During multiple tests, the support can move and / or rotate the light source according to specific testing requirements. In each test, the light source can be positioned on the inner surface of the functional glass, away from its outer surface. In other words, the light source projects light towards the inner surface of the functional glass.

[0082] Step S10, “Setting a standard pattern at the second target position,” may include: moving a calibration target with a standard pattern to the second target position.

[0083] In this embodiment, the standard pattern can be directly formed on the calibration target or fixed on the calibration target. During the testing process, the position of the standard pattern can be adjusted according to the actual testing scenario, or the position of the standard pattern can remain fixed.

[0084] The order in which the functional glass, light source, and standard pattern are set in step S10 above is not limited. The first preset position can be located between the second target position and the first detection position. Since the monochrome camera or color camera takes pictures at the first detection position, placing the first preset position between the second target position and the first detection position can prevent the standard pattern from blocking the reflected light from the functional glass.

[0085] Furthermore, such as Figure 9 As shown, after step S30, the functional glass imaging detection method provided in this application may further include the following step S70.

[0086] S70: At the second detection position, acquire a first image that includes at least the first projection image and the second projection image, and a second image that includes at least the first projection image, the second projection image and the third projection image.

[0087] In one possible embodiment, such as Figure 10 As shown, step S70 may include steps S701 and S702.

[0088] S701: Take a picture at the second detection position using a monochrome camera to obtain a first image that includes at least the first projected image and the second projected image;

[0089] S702: Take a picture at the second detection position using a color camera to obtain a second image that includes at least the first projected image, the second projected image, and the third projected image.

[0090] Step S701 and step S301 above involve the monochrome camera acquiring a first image at different detection positions. Step S702 and step S302 above involve the color camera acquiring a second image at different detection positions.

[0091] It is understood that the functional glass imaging detection method provided in this application includes, but is not limited to, detection at a first detection position using a monochrome camera and a color camera, and also includes detection at a second detection position using a monochrome camera and a color camera. Furthermore, the number of detection positions can be increased to acquire the first and second images at more detection positions. Thus, the functional glass imaging detection method can achieve imaging detection at different distances and angles. In other words, for a single functional glass to be detected, multiple detections at different positions can be performed. Optionally, the number of detection positions can be 5-15.

[0092] like Figure 11 As shown, Figure 11 This is a schematic diagram of the structure of a functional glass imaging detection device 100 provided in an embodiment of this application. The functional glass imaging detection device 100 is used to implement the functional glass imaging detection method described in any of the above embodiments. The functional glass imaging detection device 100 includes a light source, a monochrome camera 9, a color camera 10, and a processor.

[0093] The light source can be a projector or a lightbox. When the light source is a projector, the light-emitting unit (i.e., the unit that generates the preset pattern) includes, but is not limited to, thin-film transistors, liquid crystal displays, reflective displays, and metal-oxide-semiconductor systems. When the light source is a lightbox, the backlight can be a light-emitting diode, and the light-emitting side of the backlight can be milled with a cover plate to create a pre-deformed standard pattern. The standard pattern can be a printed pattern, a laser pattern, a screen-printed pattern, or a spray-painted pattern. The light source can emit white light. The luminous intensity of the light source can be greater than or equal to 12000 cd / m². 2 .

[0094] The monochrome camera 9 is equipped with a filter made according to the reflection spectrum of the functional layer. The aperture, lens focal length, working distance, and other parameters of the monochrome camera 9 must be adapted to the projection distance between the light source and the functional glass. The color camera 10 has the same aperture, lens focal length, working distance, and other parameters as the monochrome camera 9. The sensors of both the monochrome camera 9 and the color camera 10 can be CCD or CMOS, etc. The sensor sizes of both the monochrome camera 9 and the color camera 10 can be 2 / 3", 1 / 1.7", 1 / 1.8", etc. In one possible embodiment, the sensors of both the monochrome camera 9 and the color camera 10 can be large-sized sensors. The resolution of both the monochrome camera 9 and the color camera 10 can be greater than 12M pixels. In this embodiment, the brightness sensing spectrum of the color camera 10 should conform to the CIE 1931 XYZ 2° standard observer model or the CIE 1964 XYZ 10° standard observer model.

[0095] The processor may include an image processor. The processor is electrically connected to the monochrome camera 9 and the color camera 10. The image processor can be directly or indirectly electrically connected to the monochrome camera 9 and the color camera 10. The processor is used to acquire a first image from the monochrome camera 9 and a second image from the color camera 10. The processor is capable of parsing the first and second images, and using the first image to perform compensation processing on the second image to obtain color information parameters of the first projected image and / or the third projected image.

[0096] Furthermore, the functional glass imaging inspection device 100 also includes a first base 2, a calibration target 1, a second base 3, and a glass support 13. The calibration target 1 is disposed on the first base 2 and is used to set a standard pattern. The glass support 13 is disposed on the second base 3 and is used to support the functional glass to be inspected. The light source, the monochrome camera 9, and the color camera 10 are all disposed on the second base 3.

[0097] The calibration target 1 and the first base 2 can be fixedly connected or movably connected. The standard pattern can be directly molded onto the calibration target 1, or it can be attached to the calibration target 1 by pasting, adsorption, or other methods. The glass holder 13 and the second base 3 can be fixedly connected or movably connected. The light source and the second base 3 can be fixedly connected or movably connected. The monochrome camera 9 and the second base 3 can be fixedly connected or movably connected. The color camera 10 and the second base 3 can be fixedly connected or movably connected. A fixed connection means that there is essentially no relative movement between the two, while a movable connection means that there can be relative movement between them, including but not limited to movement and rotation.

[0098] In one possible embodiment, the calibration target 1 is movably connected to the first base 2, the glass holder 13 is movably connected to the second base 3, the light source is movably connected to the second base 3, the monochrome camera 9 is movably connected to the second base 3, and the color camera 10 is movably connected to the second base 3. It is understood that the calibration target 1 can move relative to the first base 2, the glass holder 13 can move relative to the second base 3, the light source can move relative to the second base 3, the monochrome camera 9 can move relative to the second base 3, and the color camera 10 can move relative to the second base 3.

[0099] Furthermore, the functional glass imaging detection device 100 also includes a light source bracket 12 and a camera bracket 11 disposed on the second base 3. Both the light source bracket 12 and the camera bracket 11 are movable relative to the second base 3 along a first direction. The light source is disposed on the second base 3 via the light source bracket 12. The monochrome camera 9 and the color camera 10 are disposed on the second base 3 via the camera bracket 11.

[0100] This application does not specify the material or size of the light source bracket 12 or the camera bracket 11. For the first direction, please refer to the appendix. Figure 11 The X-axis direction is shown in the figure. The movement of the light source bracket 12 and the camera bracket 11 relative to the second base 3 along the first direction is independent of each other. During the detection process, the light source can be moved along the first direction by the light source bracket 12, and / or the monochrome camera 9 and the color camera 10 can be moved along the first direction by the camera bracket 11.

[0101] By setting up the light source bracket 12 and the camera bracket 11, it is easier to support the light source, the monochrome camera 9 and the color camera 10, and to realize the movement of the light source, the monochrome camera 9 and the color camera 10.

[0102] The glass bracket 13 can drive the functional glass to rotate relative to the second base 3 about a first axis. The light source bracket 12 can drive the light source to move relative to the second base 3 along a second direction, rotate about the first axis, and rotate about a second axis. The camera bracket 11 can drive the monochrome camera 9 to move relative to the second base 3 along the second direction, rotate about the first axis, and rotate about a third axis. The camera bracket 11 can drive the color camera 10 to move relative to the second base 3 along the second direction, rotate about the first axis, and rotate about the third axis. Wherein, the second direction is perpendicular to the first direction, the first axis is perpendicular to and perpendicular to the first direction, the second axis is parallel to the first direction, and the third axis is parallel to the second direction.

[0103] Understandably, the functional glass, driven by the glass support 13, can rotate in one direction and has a free end. The rotation of the glass support 13 around the first axis can be referred to the attached diagram. Figure 11 As shown in Figure a, the light source, driven by the light source support 12, can move in two directions and rotate in two directions, possessing four degrees of freedom. The second direction can be referenced in the appendix. Figure 11 The Z-axis direction. The rotation of the light source around the first axis can be referenced in the appendix. Figure 11 As shown in Figure b. The rotation of the light source about the second axis can be referenced in Appendix. Figure 10As shown in Figure e, the monochrome camera 9, driven by the camera mount 11, can move in two directions and rotate in two directions, possessing four degrees of freedom. The rotation of the monochrome camera 9 around the first axis can be referenced in the appendix. Figure 11 As shown in Figure c. The rotation of the color camera 10 around the third axis can be referenced in the appendix. Figure 11 As shown in Figure d. The color camera 10, driven by the camera mount 11, can move in two directions and rotate in two directions, possessing four degrees of freedom. The rotation of the color camera 10 around the first axis can be referred to the attached figure. Figure 11 As shown in Figure c. The rotation of the color camera 10 around the third axis can be referenced in the appendix. Figure 11 As shown in d.

[0104] In one possible embodiment, such as Figure 11 As shown, the glass support 13 includes a first sub-support 6 and a second sub-support 7 rotatably connected. The first sub-support 6 is disposed on the second base 3 and slidably connected to the second base 3, and the functional glass is disposed on the second sub-support 7. The light source support 12 includes a third sub-support 4 and a fourth sub-support 5 rotatably connected. The third sub-support 4 is disposed on the second base 3 and slidably connected to the second base 3, and the light source is disposed on the fourth sub-support 5.

[0105] In one possible embodiment, such as Figure 11 As shown, the first base 2 and the second base 3 are separately disposed, and the first base 2 can move relative to the second base 3 along the first direction. The calibration target 1 is slidably connected to the first base 2, and the calibration target 1 can move relative to the first base 2 along the second direction.

[0106] Understandably, the height of the calibration target 1 is adjustable, ranging from 700-1500mm above the ground. Casters can be attached to the first base 2 to allow it to move freely on the ground.

[0107] like Figure 12 As shown, Figure 12 This is a schematic diagram of the structure of a functional glass imaging inspection system 1000 provided in an embodiment of this application. The functional glass imaging inspection system 1000 includes the functional glass 8 to be inspected and the functional glass imaging inspection device 100 described in any of the above embodiments.

[0108] This application does not specifically limit the material of the glass body or the material of the functional layer of the functional glass 8. The functional layer includes, but is not limited to, an infrared reflective film layer, an electrically heated film layer, a dimming material layer, a display layer, and a color film layer. In one possible embodiment, the functional layer may be disposed on the inner surface of the glass body. In another possible embodiment, the glass body may include an inner glass plate and an outer glass plate, and the functional layer may be disposed between the inner and outer glass plates, or on the surface of the inner glass plate facing away from the outer glass plate. In this embodiment, the surface of the inner glass plate facing away from the outer glass plate forms the inner surface of the glass body, and the surface of the outer glass plate facing away from the inner glass plate forms the inner surface of the glass body.

[0109] During the detection process, the standard image is located on one side of the functional glass 8, the monochrome camera 9 and the color camera 10 are located on the side of the functional glass 8 away from the standard image, and the light source is located on the side of the functional glass 8 facing the monochrome camera 9 and the color camera 10.

[0110] The features mentioned above in the specification, claims, and drawings can be combined in any way as long as they are meaningful within the scope of this application. The advantages and features described for the functional glass imaging inspection method are applied accordingly to the functional glass imaging inspection apparatus 100 and the functional glass imaging inspection system 1000.

[0111] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, and such improvements and refinements are also considered to be within the protection scope of this application.

Claims

1. A method for imaging and detecting functional glass, characterized in that, include: Emit a preset pattern to the functional glass; The preset pattern can be reflected on different interfaces of the functional glass and form at least a first projected image, a second projected image, and a third projected image. At the first detection position, a first image including at least the first projection image and the second projection image, and a second image including at least the first projection image, the second projection image and the third projection image are acquired respectively; wherein, the first image is a monochrome image and the second image is a color image; The color information parameters of the first projected image and / or the third projected image are obtained by compensating the second image using the first image.

2. The functional glass imaging detection method according to claim 1, characterized in that, The step of obtaining color information parameters of the first projected image and / or the third projected image after compensating the second image using the first image includes: Identify the pixel corresponding to the position of the second projected image in the first image, and record the grayscale value of the second projected image; In the second image, a compensation process is performed so that the color channel values ​​calculated from the grayscale values ​​of the second projected image are compensated for at the corresponding pixels in the second image. In the second image after compensation processing, the color information parameters of the first projected image and / or the third projected image are obtained.

3. The functional glass imaging detection method according to claim 1, characterized in that, The detection method further includes: Based on the first projected image and the second projected image in the first image, relevant parameters of the second projected image are calculated and obtained; wherein, the relevant parameters of the second projected image include at least one of the distance between the second projected image and the first projected image, the brightness of the second projected image, and the contrast between the second projected image and the first projected image.

4. The functional glass imaging detection method according to claim 1, characterized in that, The first image also includes a standard image, and the detection method further includes: The distortion parameters of the first projected image are calculated using the first projected image in the first image and the standard image; wherein, the distortion parameters of the first projected image include at least one of the rotation amount, aspect ratio, magnification, displacement amount, and deformation amount of the first projected image.

5. The functional glass imaging detection method according to any one of claims 1 to 4, characterized in that, The reflection spectral characteristics of the third projected image are different from those of the first projected image and / or the second projected image. The first image is obtained by filtering based on the reflection spectral characteristics of the third projected image.

6. The functional glass imaging detection method according to any one of claims 1 to 4, characterized in that, The functional glass includes an outer glass plate, an inner glass plate, an adhesive layer, and a functional layer. The outer glass plate includes a first surface and a second surface, and the inner glass plate includes a third surface and a fourth surface. The adhesive layer is connected between the second surface of the outer glass plate and the third surface of the inner glass plate. The functional layer is disposed on at least one of the second surface, the third surface, the fourth surface, and the interior of the adhesive layer; The first projected image is formed by the reflection of the preset pattern on the fourth surface of the functional glass; The second projected image is formed by reflecting the preset pattern onto the first surface of the functional glass; The third projected image is formed by the reflection of the preset pattern on the surface of the functional layer of the functional glass.

7. The functional glass imaging detection method according to any one of claims 1 to 4, characterized in that, The detection method further includes: At the second detection position, a first image including at least the first projection image and the second projection image, and a second image including at least the first projection image, the second projection image and the third projection image are acquired respectively.

8. A functional glass imaging detection device, characterized in that, The device includes a light source, a monochrome camera, a color camera, and a processor, wherein the processor is electrically connected to the monochrome camera and the color camera, and the functional glass imaging detection device is used to implement the functional glass imaging detection method according to any one of claims 1 to 7.

9. The functional glass imaging detection device according to claim 8, characterized in that, The detection device further includes a first base, a calibration target, a second base, and a glass support. The calibration target is disposed on the first base and is used to set a standard pattern. The glass support is disposed on the second base and is used to support the functional glass to be tested. The light source, the monochrome camera, and the color camera are all disposed on the second base.

10. The functional glass imaging detection device according to claim 9, characterized in that, The detection device further includes a light source bracket and a camera bracket mounted on the second base. Both the light source bracket and the camera bracket are movable relative to the second base along a first direction. The light source is mounted on the second base via the light source bracket, and the monochrome camera and the color camera are mounted on the second base via the camera bracket.

11. The functional glass imaging detection device according to claim 10, characterized in that, The glass bracket can drive the functional glass to rotate relative to the second base about a first axis; the light source bracket can drive the light source to move relative to the second base along a second direction, rotate about the first axis, and rotate about a second axis; the camera bracket can drive the monochrome camera to move relative to the second base along the second direction, rotate about the first axis, and rotate about a third axis; the camera bracket can drive the color camera to move relative to the second base along the second direction, rotate about the first axis, and rotate about the third axis; wherein, the second direction is perpendicular to the first direction, the first axis is perpendicular to the first direction and perpendicular to the first direction, the second axis is parallel to the first direction, and the third axis is parallel to the second direction.

12. The functional glass imaging detection device according to claim 11, characterized in that, The glass support includes a first sub-support and a second sub-support that are rotatably connected. The first sub-support is disposed on the second base and slidably connected to the second base. The functional glass is disposed on the second sub-support. The light source support includes a third sub-support and a fourth sub-support that are rotatably connected. The third sub-support is disposed on the second base and slidably connected to the second base. The light source is disposed on the fourth sub-support.

13. The functional glass imaging detection device according to claim 11, characterized in that, The first base and the second base are separately disposed, and the first base can move relative to the second base along the first direction; the calibration target is slidably connected to the first base, and the calibration target can move relative to the first base along the second direction.

14. A functional glass imaging detection system, characterized in that, It includes the functional glass to be tested and the functional glass imaging testing device according to any one of claims 8 to 13.

Images