View field consistency detection device based on multispectral fusion system and use method thereof

Abstract

The invention discloses a field-of-view consistency detection device based on a multispectral fusion system and a use method thereof. The device comprises a to-be-detected module, a reading module and a test module, the to-be-tested module comprises a to-be-tested product and a tool used for fixing the to-be-tested product. The reading module comprises an electric rotary table for fixing the tool, a control computer for controlling the electric rotary table and a control display; and the test module comprises an optical platform, a reflective collimator arranged on the surface of the optical platform, and a video computer and a video display which are adaptively connected with the product to be tested. According to the invention, technologies such as low illumination and infrared imaging, image fusion processing, multispectral same view field fusion imaging and the like are adopted, so that the adjustment and inspection of multispectral products are realized, the problems of difficulty in view field consistency detection, complexity in adjustment method and the like of the multispectral same view field products are solved, the operation difficulty of detection personnel is reduced, and the detection efficiency is improved. And the research content of multispectral fusion image quality improvement in the technical field of photoelectric detection is enriched.

Description

Technical Field

[0001] The present invention relates to the field of optical detection, and in particular to a field of view consistency detection device based on a multi-spectral fusion system and a method for using the device. Background Art

[0002] The number of optoelectronic sighting equipment with low-light detection and infrared detection capabilities is increasing. Among optoelectronic sighting equipment with multi-spectral fusion images, the better the field of view consistency of the two detection modes, the better the image quality after multi-spectral fusion, and the more optimal the optical performance of the whole equipment in the fusion mode. Therefore, ensuring the field of view consistency of each detection module is the key task of various multi-spectral fusion equipment.

[0003] In order to save time during the product prototype assembly and testing stage and the mass production inspection stage, there is an urgent need for a method that can quickly and conveniently detect the field of view consistency indicators of each detection module of the product. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to provide a field of view consistency detection device based on a multi-spectral fusion system, which can intuitively and quickly achieve high-precision detection when performing field of view consistency adjustment on each module of a product or performing field of view consistency inspection on the entire product.

[0005] Another object of the present invention is to provide a method for using a field of view consistency detection device based on a multi-spectral fusion system.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a field of view consistency detection device based on a multi-spectral fusion system, comprising a module to be tested, a reading module and a testing module; the module to be tested comprises a product to be tested and a tooling for fixing the product to be tested; the reading module comprises an electric turntable for fixing the tooling, a control computer for controlling the electric turntable, and a control display; the testing module comprises an optical platform, a reflective collimator placed on the surface of the optical platform and meeting the imaging of the product to be tested, a video computer and a video display adapted to be connected to the product to be tested.

[0007] Furthermore, the control computer has adaptation software for controlling the electric turntable, and the adaptation software can control the electric turntable to adjust the azimuth and pitch, and display and record the current azimuth and pitch angle values ​​through the control display.

[0008] The control computer and the electric turntable, and the product to be tested and the video display are all electrically connected via data cables.

[0009] The control computer and the control display, and the video computer and the video display are all connected via an HDMI interface.

[0010] The method for using the above-mentioned field of view consistency detection device based on the multi-spectral fusion system comprises the following steps:

[0011] 1) Place the product to be tested facing the reflective collimator, so that the product to be tested can observe the target wire of the collimator in the field of view. Connect the product to be tested to a video computer via a data cable and display the actual imaging picture of the product on a video monitor. Select fixed points at the center of the image and several other special positions on the video monitor as marking points.

[0012] 2) Control the electric turntable to record the field of view consistency data in low illumination or infrared mode respectively; specifically:

[0013] When the working mode of the product under test is in low illumination mode, the product under test transmits the acquired image to the video display via the data cable, and controls the electric turntable by operating the computer adaptation software to align the mark point O (x0, y0) of the video display with the crosshair of the parallel light tube; then record the mark point A1 (x0, y0) in low illumination mode respectively. 11 ,y 11 )、A2(x 21 ,y 21 )、A3(x 31 ,y 31 )、A4(x 41 ,y 41 ) is the horizontal angle value of the electric turntable after aligning the collimator crosshair, where the area between A1 and A2 is the 50% horizontal field of view in low illumination mode, and the area between A3 and A4 is the 100% horizontal field of view in low illumination mode; mark point B1 (x 12 ,y 12 )、B2(x 22 ,y 22 )、B3(x 32 ,y 32 )、B4(x 42 ,y 42 ) The pitch angle value of the electric turntable after aligning the collimator crosshair, where the area between B1 and B2 is a 50% pitch field of view in low illumination mode, and the area between B3 and B4 is a 100% pitch field of view in low illumination mode;

[0014] Then, switch the working mode of the product to be tested to infrared mode, and control the electric turntable by operating the computer adaptation software to align the mark point O′(x′0,y′0) on the video display with the crosshair of the collimator; then record the mark point A1′(x′ 11 ,y′ 11 )、A2′(x′ 21 ,y′ 21 )、A3′(x′ 31 ,y′ 31 )、A4′(x′41 ,y′ 41 ) is the horizontal angle value of the electric turntable after aligning the collimator crosshair, where the area between A1′ and A2′ is the 50% horizontal field of view of the infrared mode, and the area between A3′ and A4′ is the 100% horizontal field of view of the infrared mode; mark point B1′ (x′ 12 ,y′ 12 )、B2′(x′ 22 ,y′ 22 )、B3′(x′ 32 ,y′ 32 )、B4′(x′ 42 ,y′ 42 ) The pitch angle value of the electric turntable after aligning with the crosshair of the collimator, where the angle between B1′ and B2′ is 50% of the pitch field of view in the infrared mode, and the angle between B3′ and B4′ is 100% of the pitch field of view in the infrared mode;

[0015] 3) The data obtained in step 2) are calculated in sequence using the formulas in the following table:

[0016]

[0017]

[0018] Since the horizontal angle value and the pitch angle value in the 50% field of view are half of the full field of view, when comprehensively calculating the field of view consistency index, take Δ x50 , Δ y50 The double of Δ x100 , Δ y100 Then take the mean; that is:

[0019] Horizontal field of view consistency: Δ x =(2Δ x50 +Δ x100 ) / 2;

[0020] Pitch field consistency: Δ y =(2Δ y50 +Δ y100 ) / 2;

[0021] Thus, the horizontal field of view consistency (Δ x ) and pitch field consistency (Δ y ).

[0022] The beneficial effect of the present invention is that the method adopts the comprehensive evaluation method of 50% field of view consistency and 100% field of view consistency to detect the field of view consistency index of the multi-spectral same field of view fusion image. By adding the detection of 50% field of view consistency index, the consideration of distortion in the design stage is promoted, thereby reducing the influence of distortion on the quality of the fused image. Through the horizontal and pitch angle values ​​of the electric turntable when the cross target wire of the parallel light tube coincides with the corresponding marking point, eight groups of data of the horizontal 50% field of view, the horizontal 100% field of view, the pitch 50% field of view and the pitch 100% field of view of the low illumination and infrared detector can be obtained respectively, and the corresponding low illumination and infrared fields of view are subtracted and averaged to obtain the horizontal and pitch field of view consistency indicators respectively.

[0023] The present invention utilizes low-illumination imaging, infrared imaging, image fusion processing, multi-spectral same-field-of-view fusion imaging and other technologies to not only realize the calibration and inspection of multi-spectral products, but also solves the problems of difficult field-of-view consistency detection and complex calibration methods for multi-spectral same-field-of-view products, reduces the operational difficulty for detection personnel, and enriches the research content of improving the quality of multi-spectral fusion images in the field of optoelectronic detection technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The structure and technical features of the present invention are further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 It is a schematic diagram of the position of the marking points of the video display in the present invention.

[0027] See attached Figure 1 In the figure, 1. product to be tested, 2. data cable, 3. tooling, 4. electric turntable, 5. control computer, 6. control display, 7. video computer, 8. video display, 9. optical platform, 10. reflective collimator. DETAILED DESCRIPTION

[0028] Reference Figure 1-2 The figure shows an embodiment of the present invention, which discloses a field of view consistency detection device based on a multi-spectral fusion system, including a module to be tested, a reading module and a test module. The module to be tested includes a product to be tested 1, a data cable 2 between the product to be tested 1 and a video computer 7, and a tooling 3 for connecting the product to be tested 1 and an electric turntable 4. The reading module includes an electric turntable 4, a control computer 5 and a control display 6. The test module includes a video computer 7, a video display 8, an optical platform 9 and a reflective collimator 10.

[0029] The control computer 5 and the electric turntable 4 are connected through a data cable. The control computer 5 controls the electric turntable 4 to adjust the azimuth and pitch through the adaptation software, and displays and records the current azimuth and pitch angle values ​​of the electric turntable 4. The product 1 to be tested is fixed on the electric turntable 4 through the tooling 3. The product 1 to be tested faces the reflective collimator 10 placed on the optical platform 9, that is, the collimator target wire is observed in the product field of view. The product 1 to be tested is connected to the video computer 7 through the data cable 2 and the actual imaging screen of the product is displayed on the video display 8. Then, fixed points are selected as marking points at the center position of the image imaging and several other special positions on the video display 8. By recording several sets of electric turntable data (horizontal, pitch) and calculating according to the corresponding formula, the field of view consistency data of the product in two modes can be obtained.

[0030] In the embodiment, the electric turntable 4 adopts a high-precision turntable with a precision of 6″, and the display adopts a 2k high-definition display.

[0031] When the working mode of the product to be tested 1 is in the low illumination mode, the product to be tested transmits the acquired image to the video display 8 via the data cable, and controls the electric turntable 4 by the adaptation software of the control computer 5, so that the marking point O (x0, y0) of the video display 8 is aligned with the crosshair of the parallel light tube 10; then the marking point A1 (x0, y0) in the low illumination mode is recorded respectively. 11 ,y 11 )、A2(x 21 ,y 21 )、A3(x 31 ,y 31 )、A4(x 41 ,y 41 ) is the horizontal angle value of the electric turntable after aligning the collimator crosshair, where the area between A1 and A2 is the 50% horizontal field of view in low illumination mode, and the area between A3 and A4 is the 100% horizontal field of view in low illumination mode; mark point B1 (x 12 ,y 12 )、B2(x 22 ,y 22 )、B3(x 32 ,y 32 )、B4(x 42 ,y 42 ) is the pitch angle value of the electric turntable after aligning with the crosshair of the collimator, where the area between B1 and B2 is 50% of the pitch field of view in low illumination mode, and the area between B3 and B4 is 100% of the pitch field of view in low illumination mode.

[0032] Then, the working mode of the product to be tested 1 is switched to the infrared mode, and the electric turntable 4 is controlled by the adaptation software of the control computer 5 so that the marking point O′(x′0, y′0) of the video display 8 is aligned with the crosshair of the collimator; then, the marking point A1′(x′11 ,y′ 11 )、A2′(x′ 21 ,y′ 21 )、A3′(x′ 31 ,y′ 31 )、A4′(x′ 41 ,y′ 41 ) is the horizontal angle value of the electric turntable after aligning the collimator crosshair, where the area between A1′ and A2′ is the 50% horizontal field of view of the infrared mode, and the area between A3′ and A4′ is the 100% horizontal field of view of the infrared mode; mark point B1′ (x′ 12 ,y′ 12 )、B2′(x′ 22 ,y′ 22 )、B3′(x′ 32 ,y′ 32 )、B4′(x′ 42 ,y′ 42 ) The pitch angle value of the electric turntable after aligning the collimator cross target wire, where B1' and B2' are 50% pitch field of view in infrared mode, and B3' and B4' are 100% pitch field of view in infrared mode. At this time, the data in the following Table 1 can be obtained:

[0033] Table 1

[0034]

[0035] According to the data in Table 1, the data in Table 2 can be calculated:

[0036] Table 2

[0037] level Pitch 50% field of view difference <![CDATA[Δ x50 =|ω x50 -ω′ x50 |]]> <![CDATA[Δ y50 =|ω y50 -ω′ y50 |]]> 100% field of view difference <![CDATA[Δ x100 =|ω x100 -ω′ x100 |]]> <![CDATA[Δ y100 =|ω y100 -ω′ y100 |]]>

[0038] Because 50% of the field of view (including horizontal and pitch) is half of the full field of view, when comprehensively calculating the field of view consistency index, take Δ x50 , Δ y50 The double of Δ x100 , Δ y100 Then take the mean. That is:

[0039] Horizontal field of view consistency: Δ x =(2Δ x50 +Δ x100 ) / 2;

[0040] Pitch field consistency: Δ y =(2Δ y50 +Δ y100 ) / 2;

[0041] At this time, the horizontal field of view consistency (Δ x) and pitch field consistency (Δ y ).

Claims

1. A field of view consistency detection device based on a multi-spectral fusion system, characterized in that: It includes a module to be tested, a reading module and a testing module; the module to be tested includes a product to be tested and a tooling for fixing the product to be tested; the reading module includes an electric turntable for fixing the tooling, a control computer and a control display for controlling the electric turntable; the testing module includes an optical platform, a reflective collimator placed on the surface of the optical platform and capable of imaging the product to be tested, a video computer and a video display adapted to be connected to the product to be tested.

2. The field of view consistency detection device based on the multi-spectral fusion system according to claim 1, characterized in that: The control computer is provided with adaptation software for controlling the electric turntable, and the adaptation software can control the electric turntable to adjust the azimuth and pitch, and display and record the current azimuth and pitch angle values ​​through the control display.

3. The field of view consistency detection device based on the multi-spectral fusion system according to claim 1, characterized in that: The control computer and the electric turntable, and the product to be tested and the video display are all electrically connected via data cables.

4. The field of view consistency detection device based on the multi-spectral fusion system according to claim 1, characterized in that: The control computer and the control display, and the video computer and the video display are all connected via an HDMI interface.

5. The method for using the field of view consistency detection device based on the multi-spectral fusion system according to claim 1 is characterized in that The following steps are involved: 1) Place the product to be tested facing the reflective collimator, so that the product to be tested can observe the target wire of the collimator in the field of view. Connect the product to be tested to a video computer via a data cable and display the actual imaging picture of the product on a video monitor. Select fixed points at the center of the image and several other special positions on the video monitor as marking points. 2) Control the electric turntable to record the field of view consistency data in low illumination or infrared mode respectively; specifically: When the working mode of the product under test is in low illumination mode, the product under test transmits the acquired image to the video display via the data cable, and controls the electric turntable by operating the computer adaptation software to align the mark point O (x0, y0) of the video display with the crosshair of the parallel light tube; then record the mark point A1 (x0, y0) in low illumination mode respectively. 11 ,y 11 )、A2(x 21 ,y 21 )、A3(x 31 ,y 31 )、A4(x 41 ,y 41 ) is the horizontal angle value of the electric turntable after aligning the collimator crosshair, where the area between A1 and A2 is the 50% horizontal field of view in low illumination mode, and the area between A3 and A4 is the 100% horizontal field of view in low illumination mode; mark point B1 (x 12 ,y 12 )、B2(x 22 ,y 22 )、B3(x 32 ,y 32 )、B4(x 42 ,y 42 ) The pitch angle value of the electric turntable after aligning the collimator crosshair, where the area between B1 and B2 is a 50% pitch field of view in low illumination mode, and the area between B3 and B4 is a 100% pitch field of view in low illumination mode; Then, switch the working mode of the product to be tested to infrared mode, and control the electric turntable by operating the computer adaptation software to align the mark point O′(x′0,y′0) on the video display with the crosshair of the collimator; then record the mark point A1′(x′ 11 ,y′ 11 )、A2′(x′ 21 ,y′ 21 )、A3′(x′ 31 ,y′ 31 )、A4′(x′ 41 ,y′ 41 ) is the horizontal angle value of the electric turntable after aligning the collimator crosshair, where the area between A1′ and A2′ is the 50% horizontal field of view of the infrared mode, and the area between A3′ and A4′ is the 100% horizontal field of view of the infrared mode; mark point B1′ (x′ 12 ,y′ 12 )、B2′(x′ 22 ,y′ 22 )、B3′(x′ 32 ,y′ 32 )、B4′(x′ 42 ,y′ 42 ) The pitch angle value of the electric turntable after aligning with the crosshair of the collimator, where the angle between B1′ and B2′ is 50% of the pitch field of view in the infrared mode, and the angle between B3′ and B4′ is 100% of the pitch field of view in the infrared mode; 3) The data obtained in step 2) are calculated in sequence using the formulas in the following table: Since the horizontal angle value and the pitch angle value in the 50% field of view are half of the full field of view, when comprehensively calculating the field of view consistency index, take Δ x50 , Δ y50 The double of Δ x100 , Δ y100 Then take the mean; That is: Horizontal field of view consistency: Δ x =(2Δ x50 +Δ x100 ) / 2; Pitch field consistency: Δ y =(2Δ y50 +Δ y100 ) / 2; Thus, the horizontal field of view consistency (Δ x ) and pitch field consistency (Δ y ).

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