Fisheye image splicing and collecting device

Abstract

The utility model discloses a fisheye image splicing and collecting device which comprises a lens support, one end of the lens support is provided with a front field fisheye lens module, the other end of the lens support is provided with a rear field fisheye lens module, and the optical axes of the front field fisheye lens module and the rear field fisheye lens module are overlapped; the prism is arranged between the front view field fisheye lens module and the rear view field fisheye lens module, and the prism is located at the center of a connecting line of the optical center of the lens support and the optical center of the front view field fisheye lens module; the protection frame is mounted at the bottom of the lens support, an image acquisition circuit board is mounted at the inner bottom of the protection frame, an image sensor is arranged at the top of the image acquisition circuit board, and a flexible flat cable wiring seat penetrating through the protection frame is arranged on the image acquisition circuit board; the beneficial effects of the utility model are that through the designed supporting part, the supporting of the flexible flat cable wire holder is increased, the looseness of the flexible flat cable wire holder is reduced, and the accuracy of image acquisition is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of image acquisition, and in particular relates to a fisheye image splicing acquisition device. Background Art

[0002] Fisheye images are images taken using a camera with a fisheye lens; a fisheye lens is a special ultra-wide-angle lens with a field of view of 180 to 270 degrees. It is named "fisheye lens" because its visual effect is like a fish's eye observing the scenery on the water surface and the structure of the lens is very similar to that of a fish's eye.

[0003] With the rapid development of computer vision and image processing technologies, fisheye image stitching technology has shown broad application prospects and great value in many fields. Due to its ultra-wide viewing angle, fisheye lenses can capture a wider field of view than traditional lenses, and therefore have been widely used in surveillance and security, virtual reality, panoramic photography, autonomous driving, robot navigation and other fields.

[0004] Fisheye image stitching technology involves registering, correcting, and fusing overlapping images captured by multiple fisheye lenses to create seamless panoramic or 360° surround-view images. This technology requires not only high-precision image stitching algorithms but also reliable image acquisition devices to provide high-quality raw image data. It can be used in the following scenarios:

[0005] Surveillance and security: In large public places such as airports, train stations, and shopping malls, fisheye image stitching can achieve full-scale surveillance without blind spots, improving security and prevention capabilities.

[0006] Virtual Reality: In VR devices, panoramic images generated by fisheye image stitching technology can provide a more immersive experience, enhancing the user's sense of interaction and realism;

[0007] Panoramic photography: For photographers who need to capture wide scenes, fisheye image stitching can simplify the shooting process and improve shooting efficiency;

[0008] Autonomous driving: In autonomous vehicles, fisheye image stitching devices can generate panoramic images of the vehicle's surroundings in real time, helping the vehicle achieve more accurate navigation and obstacle avoidance.

[0009] Robot navigation: In robot navigation systems, fisheye image stitching technology can provide comprehensive environmental information, helping robots achieve more intelligent path planning and autonomous navigation.

[0010] Publication number CN204948207U discloses a panoramic image acquisition device comprising a fisheye lens module, an image sensor, and a signal transmission line. The device comprises two groups of fisheye lens modules, whose optical axes overlap and are arranged at opposite ends of the same optical axis. A prism is disposed at the center of the line connecting the optical centers of the two groups of fisheye lens modules. Below the prism is an image sensor that simultaneously captures images from both fisheye lens modules. The image sensor and flexible cable connector are arranged on an image acquisition circuit board. This patent has the following problems:

[0011] After the flexible cable connector is spliced, due to the lack of support, it will become loose over time, affecting the accuracy of image acquisition. Utility Model Content

[0012] The purpose of the utility model is to provide a fisheye image splicing and acquisition device, which increases the support for the flexible cable connection socket by adding a supporting component.

[0013] To achieve the above purpose, the present invention provides the following technical solutions: a fisheye image splicing acquisition device, comprising

[0014] A lens mount, wherein a front-view fisheye lens module is provided at one end of the lens mount and a rear-view fisheye lens module is provided at the other end, and the optical axes of the front-view fisheye lens module and the rear-view fisheye lens module overlap;

[0015] A prism, wherein the prism is disposed between the front-view fisheye lens module and the rear-view fisheye lens module, and the prism is located at the center of a line connecting the lens holder and the optical center of the front-view fisheye lens module;

[0016] A protective frame is mounted on the bottom of the lens holder, and an image acquisition circuit board is mounted on the inner bottom of the protective frame. An image sensor is disposed on the top of the image acquisition circuit board, and a flexible cable connection socket is disposed on the image acquisition circuit board and passes through the protective frame;

[0017] The supporting component includes support bases each provided at the bottom of the front-field fisheye lens module and the rear-field fisheye lens module, a support plate provided on the inner side surfaces of the two support bases, a fixing column provided on the top of the support plate, a fixing groove provided on the top of the fixing column, a movable column with one end embedded in the fixing groove and the other end resting on the flexible cable terminal socket, and an adjustment bolt provided on the fixing column for locking the movable column.

[0018] Preferably, a threaded hole is provided inside the fixing column, and the adjusting bolt passes through the threaded hole.

[0019] Preferably, the support base is a "U"-shaped structure, and a fixing ear is provided on the support base, and a fixing hole is opened inside the fixing ear.

[0020] Preferably, a protective plate is hingedly connected to the front surface of the protective frame, and a protruding handle is provided at one end of the protective plate.

[0021] Preferably, a slot is provided on the top of the protective plate, and a connecting piece is installed on the front surface of the protective frame.

[0022] Preferably, an insertion rod is movably provided on the connecting piece, and one end of the insertion rod can be inserted into the interior of the slot.

[0023] Preferably, the insertion rod is a "T"-shaped structure, and a through hole for the insertion rod to pass through is provided inside the connecting piece.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] Through the designed support components, the support for the flexible cable terminal block is increased, the looseness of the flexible cable terminal block is reduced, and the accuracy of image acquisition is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the utility model;

[0027] Figure 2 This is a schematic diagram of a partial cross-sectional structure of the utility model;

[0028] Figure 3 For the utility model Figure 2 Schematic diagram of the enlarged structure of the N region;

[0029] Figure 4 For the utility model Figure 1 Schematic diagram of the enlarged structure of the M region;

[0030] In the figure: 1. Lens holder; 2. Front-field fisheye lens module; 3. Rear-field fisheye lens module; 4. Prism; 5. Support seat; 6. Support plate; 61. Fixed column; 610. Fixed slot; 62. Movable column; 63. Adjustment bolt; 7. Protective frame; 71. Image acquisition circuit board; 72. Image sensor; 73. Flexible cable terminal block; 74. Protective plate; 740. Protruding handle; 741. Slot; 8. Connecting piece; 9. Insert rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1

[0033] See also Figures 1-4 , is the first embodiment of the present utility model, which provides a fisheye image stitching acquisition device, comprising

[0034] A lens holder 1, with a front-view fisheye lens module 2 disposed at one end and a rear-view fisheye lens module 3 disposed at the other end, thereby realizing the addition of the front-view fisheye lens module 2 and the rear-view fisheye lens module 3, and with the optical axes of the front-view fisheye lens module 2 and the rear-view fisheye lens module 3 overlapping and being relatively arranged at the two ends of the same optical axis;

[0035] Prism 4, prism 4 is arranged between the front field fisheye lens module 2 and the rear field fisheye lens module 3, and prism 4 is located at the center of the line connecting the optical centers of the lens holder 1 and the front field fisheye lens module 2, realizing the addition of prism 4;

[0036] The protective frame 7 is installed at the bottom of the lens holder 1, realizing the addition of the protective frame 7 and increasing the protection performance by using the protective frame 7. An image acquisition circuit board 71 is installed at the inner bottom of the protective frame 7, realizing the addition of the image acquisition circuit board 71. An image sensor 72 is provided on the top of the image acquisition circuit board 71. The image sensor 72 is used to collect images of the front-view fisheye lens module 2 and the rear-view fisheye lens module 3. The light of the front and rear fields is synchronously focused by the fisheye lens module to form an image and then reflected to the image sensor 72 by the reflective surface of the prism 4. The prism 4 is located directly above the image sensor 72, and its tip is facing the dividing line of 1 / 2 of the length of the image sensor 72. A flexible flat cable terminal block 73 that passes through the protective frame 7 is provided on the image acquisition circuit board 71, realizing the addition of the flexible flat cable terminal block 73.

[0037] The supporting components include support bases 5, both of which are arranged at the bottom of the front field fisheye lens module 2 and the rear field fisheye lens module 3, so as to realize the addition of support bases 5, support plates 6 arranged on the inner sides of the two support bases 5, and the stability of the connection between the two support bases 5 is increased by the support plates 6, and a fixing column 61 is arranged on the top of the support plate 6, and the support for the fixing column 61 is increased by the support plate 6, and a fixing groove 610 is provided on the top of the fixing column 61, so as to realize the opening of the fixing groove 610, and a movable column 62 with one end embedded in the fixing groove 610 and the other end resting on the soft cable terminal holder 73, and the movable column 62 can rest on the soft cable terminal holder 73, thereby increasing the support for the soft cable terminal holder 73 and reducing the looseness of the soft cable terminal holder 73, thereby ensuring the accuracy of image acquisition, and an adjustment bolt 63 is provided on the fixed column 61 to lock the movable column 62, and the adjustment bolt 63 can stabilize the adjusted movable column 62.

[0038] In this embodiment, preferably, a threaded hole is opened inside the fixing column 61 to realize the opening of the threaded hole, and the adjusting bolt 63 passes through the threaded hole, and the thread on the adjusting bolt 63 can cooperate with the threaded hole.

[0039] In this embodiment, preferably, the support seat 5 is a "U"-shaped structure, and a fixing ear is provided on the support seat 5 to realize the addition of the fixing ear. A fixing hole is opened inside the fixing ear to facilitate passing a screw through the fixing hole to achieve the stability of the fixing ear, thereby achieving a stable installation of the support seat 5.

[0040] In this embodiment, preferably, a protective plate 74 is hinged on the front surface of the protective frame 7, which can increase the protective performance, and a protruding handle 740 is provided at one end of the protective plate 74, which increases the convenience of opening the protective plate 74.

[0041] Example 2

[0042] See also Figures 1-4 , which is the second embodiment of the present utility model, is based on the previous embodiment, except that:

[0043] A slot 741 is provided at the top of the protective plate 74, which enables the opening of the slot 741. A connecting piece 8 is installed on the front surface of the protective frame 7, which enables the addition of the connecting piece 8. A plug rod 9 is movably provided on the connecting piece 8, which enables the addition of the plug rod 9, and one end of the plug rod 9 can be inserted into the interior of the slot 741. The plug rod 9 is a "T"-shaped structure, and a through hole is provided inside the connecting piece 8 for the plug rod 9 to pass through. When the plug rod 9 is inserted into the slot 741, it helps to increase the stability of the closing of the protective plate 74. When the plug rod 9 is detached from the slot 741, it makes it easier to open the protective plate 74.

[0044] It should be noted that the specific structures and working principles of the lens holder 1, the front-view fisheye lens module 2, the rear-view fisheye lens module 3, the prism 4, the image acquisition circuit board 71, the image sensor 72, and the flexible cable connector 73 in this application have been disclosed in the panoramic image acquisition device with the publication number CN204948207U.

[0045] The fisheye image stitching and acquisition device in this application realizes the complete unification of image quality of different fields of view in the panoramic image and the complete synchronization of the pictures; there is only one video output, which greatly simplifies the data acquisition task and panoramic stitching task of the later image processing, reducing the difficulty and cost; the number of image sensor chips and the number of lenses are reduced, which reduces the cost of the image acquisition system, and the imaging quality is higher and the image quality is more stable.

[0046] The working principle and usage process of the present invention are as follows: the fixing ears are stabilized by passing screws through the fixing holes, thereby achieving stable installation of the support base 5, the movable column 62 is against the flexible cable terminal holder 73, and the adjustment bolt 63 stabilizes the adjusted movable column 62, thereby increasing support for the flexible cable terminal holder 73, reducing looseness of the flexible cable terminal holder 73, and ensuring accurate image acquisition.

[0047] Although the embodiments of the present invention have been shown and described, please refer to the detailed description above. It will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fisheye image stitching and acquisition device, characterized by: include A lens support (1), wherein a front-view fisheye lens module (2) is provided at one end of the lens support (1), and a rear-view fisheye lens module (3) is provided at the other end, and the optical axes of the front-view fisheye lens module (2) and the rear-view fisheye lens module (3) overlap; A prism (4), wherein the prism (4) is arranged between the front-view fisheye lens module (2) and the rear-view fisheye lens module (3), and the prism (4) is located at the center of a line connecting the optical centers of the lens holder (1) and the front-view fisheye lens module (2); A protective frame (7), the protective frame (7) being mounted on the bottom of the lens support (1), and an image acquisition circuit board (71) being mounted on the inner bottom of the protective frame (7), an image sensor (72) being disposed on the top of the image acquisition circuit board (71), and a flexible flat cable connection seat (73) penetrating the protective frame (7) being disposed on the image acquisition circuit board (71); A supporting component comprises a supporting seat (5) both arranged at the bottom of the front field fisheye lens module (2) and the rear field fisheye lens module (3), a supporting plate (6) arranged on the inner side of the two supporting seats (5), a fixing column (61) arranged on the top of the supporting plate (6), a fixing groove (610) provided on the top of the fixing column (61), a movable column (62) with one end embedded in the fixing groove (610) and the other end resting on the flexible cable terminal seat (73), and an adjusting bolt (63) arranged on the fixing column (61) for locking the movable column (62).

2. The fisheye image stitching and acquisition device according to claim 1, characterized in that: A threaded hole is provided inside the fixing column (61), and the adjusting bolt (63) passes through the threaded hole.

3. The fisheye image stitching and acquisition device according to claim 1, characterized in that: The support seat (5) is a "U"-shaped structure, and a fixing ear is provided on the support seat (5), and a fixing hole is provided inside the fixing ear.

4. The fisheye image stitching and acquisition device according to claim 1, characterized in that: A protective plate (74) is hingedly connected to the front surface of the protective frame (7), and a protruding handle (740) is provided at one end of the protective plate (74).

5. The fisheye image stitching and acquisition device according to claim 4, characterized in that: A slot (741) is provided on the top of the protection plate (74), and a connecting piece (8) is installed on the front surface of the protection frame (7).

6. The fisheye image stitching and acquisition device according to claim 5, characterized in that: An insertion rod (9) is movably provided on the connecting piece (8), and one end of the insertion rod (9) can be inserted into the interior of the slot (741).

7. The fisheye image stitching and acquisition device according to claim 6, characterized in that: The insertion rod (9) is a "T"-shaped structure, and a through hole for the insertion rod (9) to pass through is provided inside the connecting piece (8).

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