Multi-view circumferential scanning imaging system

Abstract

The utility model relates to a multi-view circumferential scanning imaging system. Comprising an array camera group, a rotary holder, an image processing module and a processing device, the array camera group comprises a base and two mounting side plates, the two mounting side plates are vertically mounted on the base, and the two mounting side plates are arranged at an included angle; a plurality of mounting areas are arranged between the two mounting side plates and the base from bottom to top, at least one image acquisition module is obliquely mounted in each mounting area, the vertical field angles of the image acquisition modules in the same mounting area are the same, and the vertical field angles of the image acquisition modules corresponding to the mounting areas are sequentially increased from bottom to top; the focal length of the image acquisition module corresponding to each mounting area is sequentially reduced from bottom to top, and the number of the image acquisition modules corresponding to each mounting area is sequentially reduced from bottom to top. According to the utility model, low-altitude full coverage can be realized, the horizontal field angle can reach 360 degrees, and the vertical field angle can reach 90 degrees.

Description

TECHNICAL FIELD

[0001] The utility model belongs to array imaging technical field especially relates to a multi -purpose week sweep imaging system. BACKGROUND

[0002] With the development of low altitude economy, it has become an important issue to ensure low altitude safety. The current week sweep system for low altitude detection mainly adopts photoelectric turntable and variable focus long focal length visible light or infrared lens, and is usually configured as a visible light lens or an infrared thermal imaging lens, and there is also a system with both. The system can track low altitude targets at a long distance, but due to the small field of view of the long focal length lens, the vertical field of view angle is not large enough, which cannot meet the requirements of modern low altitude detection. Therefore, it is urgent to develop a new type of week sweep system to provide a larger vertical field of view angle and higher imaging quality, which can detect both distant and near low altitude targets, actively find suspicious targets in the entire low altitude range, and provide accurate guidance for other systems. SUMMARY

[0003] The utility model provides a multi -purpose week sweep imaging system for low altitude detection to solve the problem of the current week sweep system vertical field of view is too small.

[0004] The technical scheme of the utility model is as follows: a multi -purpose week sweep imaging system, comprising: an array camera group, a rotating holder, an image processing module and a processing device, the array camera group comprises: a base, two mounting side plates, two mounting side plates are vertically installed on the base, and two mounting side plates are arranged at an angle.

[0005] A plurality of mounting areas are arranged from bottom to top between the two mounting side plates and the base, at least one image acquisition module is arranged in each mounting area, the vertical field of view angle of the image acquisition modules in the same mounting area is the same, the vertical field of view angle of the image acquisition modules corresponding to each mounting area increases from bottom to top in turn, the focal length of the image acquisition modules corresponding to each mounting area decreases from bottom to top in turn, and the number of image acquisition modules corresponding to each mounting area decreases from bottom to top in turn.

[0006] The rotating holder is installed below the base and is used to drive the array camera group to rotate. The processing device is in communication connection with the rotating holder, all the image acquisition modules are in communication connection with the image processing module, the image processing module is connected with the processing device, the processing device is used to control the rotating holder to rotate, the image processing module is used to collect images shot by all the image acquisition modules and send the images to the processing device, and the processing device is used to splice the shot images to form a panoramic photo.

[0007] Further, the number of the installation areas is four, the installation areas are sequentially from bottom to top the first installation area, the second installation area, the third installation area and the fourth installation area, the number of the image acquisition modules in the first installation area is ten, the number of the image acquisition modules in the second installation area is eight, the number of the image acquisition modules in the third installation area is two, and the number of the image acquisition modules in the fourth installation area is one.

[0008] Further, the image acquisition modules in the installation area are symmetrically arranged along the center line of the base.

[0009] Further, the image acquisition modules in the first installation area are arranged in two rows and five columns, and the image acquisition modules in the second installation area are arranged in two rows and four columns.

[0010] Further, the vertical field of view angle of the image acquisition modules in the first installation area is 0°-14°, the vertical field of view angle of the image acquisition modules in the second installation area is 14°-34°, the vertical field of view angle of the image acquisition modules in the third installation area is 34°-56°, and the vertical field of view angle of the image acquisition modules in the fourth installation area is 56°-90°.

[0011] Further, the number of the array camera groups is m, and the horizontal field of view angle of each array camera group is 360 / m, wherein m is a positive integer less than 10.

[0012] Further, an azimuth compensation swing mirror is mounted on the lens of all the image acquisition modules.

[0013] Further, the image acquisition module comprises a camera.

[0014] The beneficial effects of the present application are as follows: the present application can realize full coverage of low altitude, the horizontal field of view angle can reach 360°, and the vertical field of view angle can reach 90°; the present application is composed of multiple lenses with different focal lengths, and the lenses with different focal lengths are respectively responsible for different vertical field of view angles, so as to realize wider field of view and higher resolution; the present application increases the number of high focal length cameras for low altitude, thereby improving the detection capability and imaging accuracy of flying objects in the low altitude range. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the present application.

[0016] Figure 2 is a structural schematic view of the array camera group in the present application.

[0017] Figure 3 is a side view of the array camera group in the present application.

[0018] Figure 4It is a vertical field of view schematic diagram of the utility model. DETAILED DESCRIPTION

[0019] In order to make the person skilled in the art better understand the utility model scheme, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment, and the described embodiment is only a part of the embodiment of the utility model, not all. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor should belong to the protection scope of the utility model.

[0020] In the embodiment of the utility model, Figure 1 It is the structure schematic diagram provided according to the specific structure of a multi-view week scanning imaging system of the utility model, as Figure 1 The utility model includes:

[0021] Array camera group 1, rotating holder 4, image processing module 5 and processing device 6.

[0022] Wherein, array camera group 1 includes: base 11, two installation side plates 12, two installation side plates 12 are vertically installed on base 11, and two installation side plates 12 are arranged at an angle.

[0023] Multiple installation areas are arranged from bottom to top between two installation side plates 12 and base 11, at least one image acquisition module 3 is obliquely installed in each installation area, the vertical field angle of image acquisition module 3 in the same installation area is same, the vertical field angle of corresponding image acquisition module 3 of each installation area increases from bottom to top in turn, the focal length of corresponding image acquisition module 3 of each installation area decreases from bottom to top in turn, and the number of corresponding image acquisition module 3 of each installation area decreases from bottom to top in turn.

[0024] Rotating holder 4 is installed below base 11 and is used to drive array camera group 1 to rotate, processing device 6 is connected with rotating holder 4 in communication, all image acquisition modules are connected with image processing module 5 in communication, image processing module 5 is connected with processing device 6 in communication, processing device 6 is used to control rotating holder 4 to rotate, image processing module 5 is used to collect the image photographed by all image acquisition modules and send to processing device 6, and processing device 6 is used to splice the photographed image and form panoramic photo.

[0025] The processing device 6 sends a motion signal to the rotating holder 4, and the rotating holder 4 drives the array camera group 1 to rotate by the motor after receiving the motion signal, and the array camera group 1 rotates 360° at a certain speed to realize a horizontal field of view angle of 360°. The array camera group 1 is composed of a plurality of cameras with different focal lengths, and the camera lenses with different focal lengths are respectively responsible for different vertical field of view angles, so as to realize a vertical field of view angle of 90°.

[0026] The image processing module 5 sends the images captured by each image acquisition module to the processing device 6, and the image processing module 53 specifically converts the original images captured by the CMOS image sensor into YUV format images with higher quality and can be displayed through a processing flow, and the specific model is an SS928 chip, and the processing device 6 splices the captured images to form a panoramic photo, and the processing device 6 can be a computer, and it should be noted that the image splicing and fusion algorithm is a conventional technical means in the art, and therefore will not be described here. The processing device 6 can be connected to a display device for displaying the panoramic photo.

[0027] In an embodiment of the present application, the number of installation areas is four, and the installation areas are sequentially the first installation area 21, the second installation area 22, the third installation area 23 and the fourth installation area 24 from bottom to top, the number of cameras 3 in the first installation area 21 is 10, the number of cameras 3 in the second installation area 22 is 8, the number of cameras 3 in the third installation area 23 is 2, and the number of cameras 3 in the fourth installation area 24 is 1.

[0028] When multiple flying object targets appear at the same time, the present application can simultaneously track and cover multiple targets in the range, and simultaneously image multiple targets without affecting each other. When the low-altitude flying object flies through the coverage range of the array camera 3 at the same height, the imaging pixels of the flying object change within a certain range, ensuring that there are enough pixels for target recognition. The present application increases the number of high focal length cameras 3 for low altitude, thereby improving the detection capability and imaging accuracy of the flying object target in the low altitude range.

[0029] In an embodiment of the present application, the cameras 3 in the installation area are symmetrically arranged along the center line of the base 11. The cameras 3 in the first installation area 21 are arranged in two rows and five columns, and the cameras 3 in the second installation area 22 are arranged in two rows and four columns.

[0030] In an embodiment of the present application, as shown in Figure 3 Each camera is installed through a support, and the inclination angles of the supports of each installation area are different, and the inclination angles of the supports meet the vertical field of view angle of the camera. Figure 3As shown, the vertical field of view angle of the camera 3 in the first installation area 21 is 0°~14°, the vertical field of view angle of the camera 3 in the second installation area 22 is 14°~34°, the vertical field of view angle of the camera 3 in the third installation area 23 is 34°~56°, and the vertical field of view angle of the camera 3 in the fourth installation area 24 is 56°~90°.

[0031] In an embodiment of the present application, the image acquisition module comprises a CMOS image sensor or a camera. An azimuth compensation swing mirror is installed on the lens of each image acquisition module 3. The field of view offset generated by the swing of the azimuth compensation swing mirror each time is used to compensate the corresponding field of view angle of the imaging. The imaging field of view angle of different focal length lenses is different, and the control and synchronization of each swing mirror corresponding to the imaging field of view angle of different focal length lenses are also different. The field of view offset generated by the swing is used to compensate the field of view angle of the corresponding lens respectively. A centralized controller is used to control the field of view offset of multiple swing mirrors. When the focal length of the lens is larger, the field of view offset of the swing mirror is smaller. The imaging field of view angle of different focal length lenses is different, which causes the images of the imaging to be not aligned in the vertical direction. A detectable starting point is arranged on the rotating holder 4, which is used for image alignment. The alignment is performed once every 360° rotation.

[0032] Finally, it should be explained that the above specific embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is described in detail with reference to the examples, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application. All of them should be covered in the scope of the claims of the present application.

Claims

1. A multi-view panoramic imaging system, comprising: The array camera group (1), the rotating holder (4), the image processing module (5) and the processing device (6), the array camera group (1) comprises: a base (11), two mounting side plates (12), two mounting side plates (12) are vertically mounted on the base (11), and two mounting side plates (12) are arranged at an angle. A plurality of mounting areas are arranged from bottom to top between the two mounting side plates (12) and the base (11), at least one image acquisition module (3) is arranged in each mounting area, the vertical field of view angle of the image acquisition module (3) in the same mounting area is the same, the vertical field of view angle of the image acquisition module (3) corresponding to each mounting area increases from bottom to top, the focal length of the image acquisition module (3) corresponding to each mounting area decreases from bottom to top, and the number of image acquisition modules (3) corresponding to each mounting area decreases from bottom to top. The rotating holder (4) is installed below the base (11) and is used to drive the array camera group (1) to rotate, the processing device (6) is in communication connection with the rotating holder (4), all the image acquisition modules are in communication connection with the image processing module (5), the image processing module (5) is in communication connection with the processing device (6), the processing device (6) is used to control the rotating holder (4) to rotate, the image processing module (5) is used to collect images shot by all the image acquisition modules and send the images to the processing device (6), and the processing device (6) is used to splice the shot images to form a panoramic photo. The number of mounting areas is four, the mounting areas are sequentially a first mounting area (21), a second mounting area (22), a third mounting area (23) and a fourth mounting area (24) from bottom to top, the number of image acquisition modules (3) in the first mounting area (21) is ten, the number of image acquisition modules (3) in the second mounting area (22) is eight, the number of image acquisition modules (3) in the third mounting area (23) is two, and the number of image acquisition modules (3) in the fourth mounting area (24) is one.

2. The multi-object perimetric scanning imaging system of claim 1, wherein, The image acquisition modules (3) in the mounting area are symmetrically arranged along the center line of the base (11).

3. The multi-object perimetric scanning imaging system of claim 2, wherein, The image acquisition modules (3) in the first mounting area (21) are arranged in two rows and five columns, and the image acquisition modules (3) in the second mounting area (22) are arranged in two rows and four columns.

4. The multi-object perimetric scanning imaging system of claim 3, wherein, The vertical field of view angle of the image acquisition modules (3) in the first mounting area (21) is 0°-14°, the vertical field of view angle of the image acquisition modules (3) in the second mounting area (22) is 14°-34°, the vertical field of view angle of the image acquisition modules (3) in the third mounting area (23) is 34°-56°, and the vertical field of view angle of the image acquisition modules (3) in the fourth mounting area (24) is 56°-90°.

5. The multi-object perimetric scanning imaging system of claim 2, wherein, The number of array camera groups (1) is m, the horizontal field of view angle of each array camera group (1) is 360 / m, and m is a positive integer less than 10.

6. The multi-object perimetric scanning imaging system of claim 1, wherein, An azimuth compensation swing mirror is mounted on the lens of each image acquisition module (3).

7. The multi-object perimetric scanning imaging system of claim 1, wherein, ​ 8. The multi-object perimetric scanning imaging system of claim 1, wherein, The image acquisition module comprises a camera. The image acquisition module comprises a camera.

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