Street text image acquisition equipment based on scene text detection and recognition technology

Abstract

The present invention discloses a street text image acquisition device based on scene text detection and recognition technology, including a base and a collection device body, and also including: a storage slot, which is constructed on the top of the base; a mounting plate, which is fixed to the bottom of the collection device body, and the mounting plate is adapted to the storage slot; a storage mechanism, which is used to drive the mounting plate to be stored in the storage slot or to drive the mounting plate to be removed from the storage slot. The street text image acquisition device based on scene text detection and recognition technology provided by the present invention acquires images and captures scene text pictures through a camera, and classifies the captured scene text pictures through a controller, and provides automated data acquisition for subsequent intelligent management of street text by performing scene recognition on the scene text pictures.

Description

Technical Field

[0001] The present invention relates to the technical field of data processing, and in particular to a street text image acquisition device based on scene text detection and recognition technology. Background Art

[0002] Image retrieval and image recognition technologies based on image content are key technologies for image data processing. Not only that, image retrieval and image recognition technologies also have important applications in real life, such as street scene text recognition. It can detect, identify, check for duplicates, and merge text images such as plaques, advertisements, slogans, etc. in street scenes through scene text detection technology and multi-language recognition technology. It can be used for accurate and rapid collection of street text images, standardized management of street text, public opinion monitoring, and other fields.

[0003] For example, the authorized patent with the authorization announcement number CN109002784B and the authorization announcement date April 13, 2021, and the name of "Street Scene Recognition Method and System", includes: obtaining training sample pairs used in this round of training; inputting each training sample pair of the obtained at least one training sample pair into the entrances corresponding to the branches of a neural network with two branches, and using the neural network to determine the first feature and the second feature for the input training sample pairs respectively; matching the comparison structure obtained by comparing the first feature and the second feature with the annotation value of the corresponding training sample pair; and training the neural network in this round according to the matching results; after multiple rounds of training of the neural network, a street scene recognition model is obtained. Using the training method of the street scene recognition model provided by the present application scheme, a street scene recognition model with high recognition accuracy can be obtained. The present application also provides a training system for a street scene recognition model, a street scene recognition method, a system and an electronic device.

[0004] Most of the existing street text image acquisition devices are mounted on the roof. The acquisition device collects street scene images as the vehicle moves. In order to obtain a better field of view, the acquisition device is generally mounted at a higher position on the roof. Obviously, when in use, the distance between the body of the acquisition device and its base is large, and the center of gravity is high. When installing, disassembling or transporting it, the acquisition device is prone to tilt or even fall over, which will cause damage to its body. Summary of the invention

[0005] The purpose of the present invention is to provide a street text image acquisition device based on scene text detection and recognition technology to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] The street text image acquisition device based on scene text detection and recognition technology includes a base and a collection device body, and also includes:

[0008] A storage slot, which is constructed on the top of the base;

[0009] A mounting plate, which is fixed to the bottom of the collection device body, and the mounting plate is adapted to the storage slot;

[0010] The storage mechanism is used to drive the mounting plate to be stored in the storage slot or to drive the mounting plate to be removed from the storage slot.

[0011] The above-mentioned street text image acquisition device based on scene text detection and recognition technology, the control center is provided with:

[0012] Recognition module: used to perform scene recognition and / or text recognition on the images captured by the camera;

[0013] A classification module, which classifies the image according to the results of the scene recognition and text recognition;

[0014] A processing module performs processing based on the classification result and a preset processing logic and outputs the processing result.

[0015] The recognition module is also used to recognize and output the text on the plaque.

[0016] The above-mentioned street text image acquisition device based on scene text detection and recognition technology, the recognition module is also used to recognize the plaque in the picture.

[0017] In the above-mentioned street text image acquisition device based on scene text detection and recognition technology, the classification module recognizes the plaque based on the appearance characteristics, color characteristics and text characteristics of the plaque.

[0018] In the above-mentioned street text image acquisition device based on scene text detection and recognition technology, the classification module recognizes the same plaque in different pictures, and outputs a plaque in one of the pictures as a representative based on the recognition result.

[0019] The above-mentioned street text image acquisition device based on scene text detection and recognition technology, the storage mechanism includes two rotating shafts rotatably connected in the storage slot, both ends of the two rotating shafts are fixed with hinged rods, the top ends of the four hinged rods are rotatably connected to the mounting plate, a driving groove is constructed in the storage slot, a rack is slidably connected in the driving groove, gears are fixed on the two rotating shafts, and the two gears are meshed with the racks.

[0020] The above-mentioned street text image acquisition device based on scene text detection and recognition technology has four clamping blocks arranged in the storage slot, and the four hinged rods are each constructed with a clamping slot on one side away from the rotating axis, and a trigger mechanism is arranged in the storage slot.

[0021] The above-mentioned street text image acquisition device based on scene text detection and recognition technology has two mounting rods fixed at the bottom of the base, and the mounting rods are configured with mounting grooves along their length directions. Two connecting rods are slidably connected in the mounting grooves, and connecting heads are provided at the ends of the two connecting rods. Two threaded rods are rotatably connected in the mounting grooves through bearings, and the two threaded rods are respectively threadedly connected to the two connecting rods, and a first bevel gear is fixed at one end of the two threaded rods close to each other, and a second bevel gear is rotatably connected to one side of the mounting rod through a bearing, and the two first bevel gears are meshed with the second bevel gear.

[0022] In the above-mentioned street text image acquisition device based on scene text detection and recognition technology, the connecting rod is detachably connected to the connecting head, and the connecting head is provided in multiple groups.

[0023] The above-mentioned street text image acquisition device based on scene text detection and recognition technology has a sleeve fixed on the second bevel gear, and a through groove connected to the sleeve is constructed inside the second bevel gear. A driving rod is inserted on the mounting rod, and the driving rod is inserted in the through groove and the sleeve. A protrusion is fixed on the driving rod, and a groove is constructed at one end of the through groove close to the protrusion.

[0024] The above-mentioned street text image acquisition device based on scene text detection and recognition technology has a connecting groove connected to the installation groove on the base, an elastic ring is fixed in the connecting groove, the driving rod extends into the connecting groove, and a ball is installed on the driving rod, and the ball abuts against the inner wall of the elastic ring.

[0025] In the above-mentioned street text image acquisition device based on scene text detection and recognition technology, a first limiting mechanism is arranged in the connecting groove, which is used to limit the movement of the driving rod along the connecting groove.

[0026] In the above-mentioned street text image acquisition device based on scene text detection and recognition technology, a second limiting mechanism is arranged in the connecting groove, which is used to limit the movement of the rack along the driving groove.

[0027] In the above-mentioned street text image acquisition device based on scene text detection and recognition technology, a third limiting mechanism is arranged in the connecting groove, which is used to limit the two driving rods from moving sequentially along the connecting groove.

[0028] In the above technical scheme, the street text image acquisition device based on scene text detection and recognition technology provided by the present invention drives the movement of the mounting plate by setting a storage mechanism. When the acquisition device body is working, the mounting plate is moved to a position higher than the base to improve its overall center of gravity, so as to facilitate the acquisition device body to obtain a better field of view. When the acquisition device body is idle, the mounting plate is moved to the storage slot, thereby reducing the distance between the acquisition device body and the base to lower its overall center of gravity and facilitate its installation, disassembly or transportation. The advantage of such a setting is that the position of the acquisition device body can be changed according to the use status of the acquisition device body to change its overall center of gravity and obtain a better use effect.

[0029] The image is acquired through the camera and the scene text picture is captured, and the captured scene text picture is classified through the controller, such as formal displays such as store fronts or informal displays such as small advertisements on telephone poles. By performing scene recognition on scene text pictures, such as plaques, large advertisements or small advertisements posted on windows or walls, junk advertisements, slogans, road signs, etc. on objects such as walls, ground, telephone poles, etc., merging (taking multiple pictures at different angles and merging the same category), screening (selecting the best picture based on specific application needs, for example, capturing more single-sided pictures when managing plaques, capturing 2 pictures for curved or corner plaques, etc.), etc., automatic data collection is provided for the subsequent intelligent management of street text. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0031] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0032] Figure 2 A top view provided for an embodiment of the present invention;

[0033] Figure 3 The embodiment of the present invention provides Figure 2 Middle AA section view;

[0034] Figure 4 The embodiment of the present invention provides Figure 2 Middle BB section view;

[0035] Figure 5 The embodiment of the present invention provides Figure 2 Middle CC section view;

[0036] Figure 6The embodiment of the present invention provides Figure 3 The enlarged schematic diagram at D in the middle;

[0037] Figure 7 The embodiment of the present invention provides Figure 3 The enlarged schematic diagram at E in the middle;

[0038] Figure 8 The embodiment of the present invention provides Figure 4 Enlarged schematic diagram at F in the middle.

[0039] Description of reference numerals:

[0040] 1. Base; 2. Collection equipment body; 3. Storage slot; 4. Mounting plate; 51. Rotating shaft; 52. Articulated rod; 53. Driving slot; 54. Rack; 55. Gear; 56. Electric telescopic rod; 61. Snap-on block; 62. Snap-on slot; 63. Connecting block; 64. Trigger rod; 65. Electromagnet; 66. Reset spring; 67. Electrode sheet; 71. Mounting rod; 72. Connecting rod; 73. Connecting head; 74. Fitting slot; 75. Threaded rod; 76. First bevel gear; 77. Second bevel gear; 78. Handle; 81. sleeve; 82. driving rod; 83. raised portion; 84. groove portion; 91. connecting groove; 92. elastic ring; 93. raised ball; 94. expansion groove; 101. first wedge block; 102. first spring; 103. second wedge block; 111. brake rod; 112. second spring; 113. roller; 114. adapter groove; 115. arc-shaped tooth plate; 116. annular tooth pattern; 121. limiting rod; 122. third spring; 123. limiting groove; 124. limiting ball; 125. annular inclined groove. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] Reference Figure 1-8 The street text image acquisition device based on scene text detection and recognition technology provided by an embodiment of the present invention includes a base 1 and a collection device body 2, and also includes: a storage slot 3, which is constructed on the top of the base 1; a mounting plate 4, which is fixed to the bottom of the collection device body 2, and the mounting plate 4 is adapted to the storage slot 3; a storage mechanism, which is used to drive the mounting plate 4 to be stored in the storage slot 3 or drive the mounting plate 4 to be moved out of the storage slot 3.

[0043] Specifically, the acquisition device body includes a camera and a control center. The control center is a central control system of the street text image acquisition device, which is used to control the rotation of the camera, receive and process the pictures taken by the camera. The control center is provided with an identification module, a classification module and a processing module. The identification module is used to perform scene recognition and / or text recognition on the pictures collected by the camera. The text recognition and the text in the pictures and / or plaques are used to extract in advance. The corresponding text can greatly reduce the scope of subsequent processing and improve the ability to directly lock the corresponding subject. The scene recognition is whether these text logos are in the correct position, such as above or on both sides of the store's door head, instead of occupying the sidewalk; the classification module classifies the pictures according to the results of the scene recognition and text recognition, that is, it divides the normal arrangement and the illegal arrangement such as occupying the sidewalk, etc. The processing module processes and outputs the processing results based on the classification results and the pre-set processing logic, such as outputting the illegal arrangement for the corresponding personnel to re-confirm and perform subsequent on-site processing, which greatly saves manpower. Scene text detection technology and multi-language recognition technology need to be based on the image captured by the acquisition device body 2, and text detection and recognition are existing technologies. The acquisition device body 2 is generally a camera or a vehicle-mounted gimbal, which is also an existing technology and will not be elaborated.

[0044] In addition, one of the cores of this embodiment is to automatically identify the plaques of merchants. The recognition module is also used to identify the plaques in the pictures. Since the plaques have obvious features, such as a rectangular shape, obvious color distinction on the outer edge, and bright words in large fonts on the plaques, the classification module can identify the plaques based on the appearance features, color features, and text features of the plaques. After identifying the same plaque in different pictures, and outputting a plaque in one of the pictures as a representative based on the recognition result, the output here can be the clearest, the most positive, or the best of these two factors. The representative plaque is output to the processing module, and the processing module processes and outputs the processing result based on the classification result and the pre-set processing logic.

[0045] The innovation of this embodiment is that the acquisition device body 2 is fixed on the mounting plate 4, and then the base 1 is fixed to the roof. When the acquisition device is moving with the vehicle to acquire street scene images, the mounting plate 4 is driven to move to the working position (that is, the mounting plate 4 is higher than the specified position of the base 1) by the storage mechanism, thereby raising the height of the acquisition device body 2 and improving the center of gravity of the entire device, so that the acquisition device body 2 can obtain a better field of view. When the acquisition device body 2 is idle, the mounting plate 4 is moved to the storage position (that is, the mounting plate 4 is stored in the specified position in the storage slot 3) by the storage mechanism, thereby lowering the height of the acquisition device body 2 and lowering the center of gravity of the entire device, so that the acquisition device body 2 can be installed, disassembled or carried conveniently. In this way, the center of gravity height of the entire device can be adjusted according to the use status of the acquisition device body 2 to obtain a better use effect.

[0046] The storage mechanism can be a telescopic rod structure (not shown), and the two ends of the telescopic rod are respectively fixed on the storage groove 3 and the mounting plate 4, so that when the telescopic rod is extended, the mounting plate 4 is driven to move to the working position, or when the telescopic rod is retracted, the mounting plate 4 is driven to move to the storage position. The telescopic rod structure can be manual or electric. This is a prior art and can be directly applied without further explanation.

[0047] In another embodiment provided by the present invention, the storage mechanism includes two rotating shafts 51 rotatably connected in the storage groove 3, and a hinged rod 52 is fixed at each end of the two rotating shafts 51 (that is, four hinged rods 52 are rotatably connected in the storage groove 3, and the four hinged rods 52 have the same length), and the four hinged rods 52 are paired in pairs and are respectively fixed at the two ends of a rotating shaft 51. In fact, the two ends of the rotating shaft 51 each constitute the rotating shaft of two hinged rods 52, and the top ends of the four hinged rods 52 are rotatably connected to the mounting plate 4. A driving groove 53 is constructed in the storage groove 3, and a rack 54 is slidably connected in the driving groove 53. Gears 55 are fixed on the two rotating shafts 51, and the two gears 55 are meshed with the racks 54. Specifically, An electric telescopic rod 56 is fixed in the driving groove 53, and the electric telescopic rod 56 is arranged along the length direction of the driving groove 53, and the telescopic end of the electric telescopic rod 56 is fixed on the rack 54. The two rotating shafts 51 are arranged along the width direction of the base 1, and the lengths of the two rotating shafts 51 are different. In the width direction of the base 1, the ends of the two rotating shafts 51 are staggered, and the two rotating shafts 51 are staggered in the length direction of the base 1. The two hinged rods 52 away from the electric telescopic rod 56 are configured with arc grooves. The function is that when in use, the rack 54 can be driven to slide in the driving groove 53 through the extension and contraction of the electric telescopic rod 56. Since the two gears 55 are meshed with the rack 54, the rack 54 can be driven synchronously and in the same direction during the sliding process. The two gears 55 rotate, thereby driving the two rotating shafts 51 to rotate synchronously and in the same direction. During the synchronous and unidirectional rotation of the two rotating shafts 51, the multiple hinged rods 52, the bottom edge of the mounting plate 4 and the bottom edge of the storage slot 3 maintain a parallelogram shape, that is, the bottom edge of the mounting plate 4 remains parallel to the bottom edge of the storage slot 3, and with the synchronous rotation of the multiple hinged rods 52, the mounting plate 4 will move between the working position and the storage position. The advantage is that, firstly, the movement of the mounting plate 4 can be controlled by driving the rack 54 to move in the driving slot 53, so that the mounting plate 4 moves to the working position or the storage position, and during the process of the mounting plate 4 changing its position, it always remains parallel to the base 1. When the base 1 is stably fixed on the top of the vehicle, the collection equipment on the mounting plate 4 The main body 2 is basically in a stable state, thereby improving the stability of the acquisition device main body 2. Secondly, multiple hinged rods 52 are arranged in a staggered manner. When the mounting plate 4 moves to the working position, the multiple hinged rods 52 are in a state vertical to the base 1, and the height of the mounting plate 4 is increased as much as possible, so that the acquisition device main body 2 obtains a better field of view. When the mounting plate 4 moves to the storage position, the multiple hinged rods 52 are arranged in a staggered manner and will not interfere with each other, so that the mounting plate 4 can be completely received in the storage slot 3. Thirdly, when the mounting plate 4 moves to the storage position, the rotating shaft 51 close to the electric telescopic rod 56 will be embedded in the arc groove on the two hinged rods 52 away from the electric telescopic rod 56, and the rotating shaft 51 and the arc groove do not contact, thereby avoiding mutual interference between the rotating shaft 51 and the hinged rod 52.

[0048] Furthermore, four clamping blocks 61 are provided in the storage slot 3, and a clamping slot 62 is constructed on one side of the four hinged rods 52 away from the rotating shaft 51. A trigger mechanism is provided in the storage slot 3. When the mounting plate 4 moves to the working position, the trigger mechanism triggers and drives the four clamping blocks 61 to move into the corresponding clamping slots 62. When the mounting plate 4 leaves the working position, the trigger mechanism drives the four clamping blocks 61 to leave the corresponding clamping slots 62. Specifically, the trigger mechanism includes four connecting blocks 63 fixed in the storage slot 3, and the four connecting blocks 63 are respectively located at the two ends of the two rotating shafts 51 (that is, a connecting block 63 is respectively provided at the two ends of a rotating shaft 51). A movable groove is constructed in the four connecting blocks 63. The four clamping blocks 61 are respectively provided with movable grooves. The trigger rod 64 is fixed on the clamping block 61, and the trigger rod 64 is an iron rod. An electromagnet 65 is fixed on the inner wall of the movable groove. A reset spring 66 is fixed on the inner wall of the movable groove. The other end of the reset spring 66 is fixed on the trigger rod 64. The electromagnet 65 and the reset spring 66 are both located on the side of the trigger rod 64 close to the clamping groove 62. The trigger mechanism also includes an electrode sheet 67 fixed on the edge of the driving groove 53 and the end of the rack 54. The two electrode sheets 67 are electrically connected to the multiple electromagnets 65. When the rack 54 moves to the edge of the driving groove 53, the mounting plate 4 is in the working position. At this time, the two electrode sheets 67 are in contact to energize the multiple electromagnets 65. The function is to drive the mounting plate 4 to move to the working position when the rack 54 When the electric telescopic rod 56 starts to retract, the mounting plate 4 moves to the storage position. At this time, the two electrode sheets 67 are not in contact, thereby powering on the electromagnets 65. After the electromagnets 65 are powered on, they attract the corresponding trigger rods 64 to move along the movable grooves, thereby driving the trigger rods 64 to squeeze the reset springs 66 and approach the corresponding electromagnet 65 side, thereby driving the clamping block 61 to move into the corresponding clamping groove 62, thereby further restricting the articulated rod 52 through the clamping block 61. Conversely, when the electric telescopic rod 56 starts to retract, the mounting plate 4 moves to the storage position. At this time, the two electrode sheets 67 are not in contact, thereby powering off the electromagnets 65. The trigger rods 64 move along the movable grooves under the elastic force of the reset springs 66. The movable groove is reset, thereby driving multiple clamping blocks 61 to move out of the corresponding clamping grooves 62 to release the restriction on the hinged rod 52. The advantages are that, first, when the rack 54 moves to the edge of the driving groove 53, the two electrode sheets 67 contact each other, thereby driving multiple clamping blocks 61 to move into the corresponding clamping grooves 62. At this time, the mounting plate 4 moves to the working position, thereby improving the stability of the collection device body 2 on the mounting plate 4. Second, at the moment when the rack 54 leaves the edge of the driving groove 53, the two electrode sheets 67 separate, and the electromagnet 65 is instantly powered off, thereby driving multiple clamping blocks 61 to move out of the corresponding clamping grooves 62 instantly under the action of the reset spring 66. This process takes a short time and will not affect the rack 54 driving the multiple hinged rods 52 to rotate.This avoids the situation where the clamping block 61 is not disengaged in time and affects the rotation of the hinge rod 52.

[0049] Furthermore, two mounting rods 71 ​​are fixed to the bottom of the base 1, and the mounting rod 71 is configured with a mounting groove along its length direction. Two connecting rods 72 are slidably connected in the mounting groove, and the ends of the two connecting rods 72 are provided with connecting heads 73 (that is, four connecting heads 73 are provided on the base 1, one at each end of a connecting rod 72), and the connecting head 73 is configured with an engaging groove 74 adapted to the outer wall of the automobile luggage rack (most vehicles are provided with two opposite luggage racks on the top). Two threaded rods 75 are rotatably connected in the mounting groove through bearings, and the thread rotation directions of the two threaded rods 75 are the same. The two threaded rods 75 are respectively threadedly connected to the two connecting rods 72, and a first bevel gear 76 is fixed to the ends of the two threaded rods 75 that are close to each other. A second bevel gear 77 is rotatably connected to one side of the mounting rod 71 through a bearing, and the two first bevel gears 76 are meshed with the second bevel gear 77. Specifically, a handle 78 is fixed on the second bevel gear 77, and the handle 78 is located outside the mounting rod 71 and is used to drive the second bevel gear 7 The two first bevel gears 76 are arranged on opposite sides of the second bevel gear 77. When in use, turning the handle 78 can drive the second bevel gear 77 to rotate. When the second bevel gear 77 rotates, the two first bevel gears 76 can be driven to rotate synchronously and in the opposite direction, thereby driving the two threaded rods 75 to rotate synchronously and in the opposite direction. Since the threads of the two threaded rods 75 have the same rotation direction, the two threaded rods 75 can drive the two connecting rods 72 to move closer to or away from each other along the mounting grooves during the synchronous and opposite rotation, thereby driving the two connecting heads 73 to move closer to or away from each other. The advantage is that the engaging grooves 74 on the connecting heads 73 can be fitted to the outer wall of the luggage rack of the car. When the two connecting heads 73 on one mounting rod 71 are close to each other, the two connecting heads 73 can be fitted to the outer walls of the two luggage racks on the top of the car, thereby fixing the base 1 on the luggage rack on the top of the car through the connecting heads 73. In addition, two mounting rods 71 ​​are provided on the base 1 to increase the connectivity between the base 1 and the luggage rack of the car, thereby further improving the stability of the device on the base 1.

[0050] Furthermore, the connecting rod 72 is detachably connected to the connecting head 73, and the connecting head 73 is provided with multiple groups. Specifically, the connection method of the connecting rod 72 and the connecting head 73 can be a lock connection or a bolt connection. The difference between the multiple groups of connecting heads 73 lies in the different positions and shapes of the fitting grooves 74. The position of the fitting grooves 74 can be located on the side of the connecting head 73 close to or away from the mounting rod 71. The different shapes of the fitting grooves 74 are used to adapt to the luggage racks of different vehicle lines. The advantage is that, firstly, by providing multiple groups of connecting heads 73, the connecting heads adapted to the vehicle luggage rack can be selected by replacement. 73, thereby improving the application range of the device, and secondly, when the fitting groove 74 is located on the side of the connecting head 73 close to the mounting rod 71, the two connecting heads 73 on one mounting rod 71 are clamped on the two outer walls of the luggage rack of the car by being close to each other, and when the fitting groove 74 is located on the side of the connecting head 73 away from the mounting rod 71, the two connecting heads 73 on one mounting rod 71 are fixed to the two outer walls of the luggage rack of the car by being away from each other, thereby selecting a more stable fixing method according to the shape of the luggage rack of the car, and further improving the connectivity between the base 1 and the luggage rack of the car.

[0051] In another embodiment provided by the present invention, a sleeve 81 is fixed on the second bevel gear 77, and the sleeve 81 and the second bevel gear 77 are coaxially arranged. A through groove connected to the sleeve 81 is configured on the inner hole of the second bevel gear 77, and a driving rod 82 is inserted on the mounting rod 71, and the driving rod 82 is inserted in the through groove and the sleeve 81, and a protrusion 83 is fixed on the driving rod 82, and a groove portion 84 is configured at one end of the through groove close to the protrusion 83. Specifically, the handle 78 is fixed to the end of the driving rod 82 located outside the mounting rod 71. When in use, the driving rod 82 can be driven to move into the through groove by axially pressing the handle 78. At the same time, the protrusion 83 on the driving rod 82 will be stuck in the corresponding groove portion 84, so that the driving rod 82 can drive the second bevel gear 77 to rotate through the protrusion 83 and the groove portion 84. The gears 77 rotate synchronously, thereby driving the two connecting blocks 63 to move closer to or away from each other. Conversely, pulling the handle 78 can drive the driving rod 82 to move outward, thereby moving the protrusion 83 out of the groove 84 to release the engagement between the driving rod 82 and the second bevel gear 77. The advantage is that when the position of the connecting head 73 needs to be changed, the handle 78 is pressed to make the protrusion 83 enter the groove 84, so that the handle 78 can drive the second bevel gear 77 to rotate, which is convenient for adjusting the position of the connecting head 73. After the position of the connecting head 73 is determined, the handle 78 is pulled outward to move the protrusion 83 out of the groove 84, thereby releasing the driving force of the handle 78 on the second bevel gear 77, thereby avoiding the situation where the connecting head 73 and the car luggage rack are unstable due to vibration or accidental contact with the handle 78 after the base 1 is fixed on the top of the car.

[0052] Further, the base 1 is provided with a connecting groove 91 connected with the mounting groove, an elastic ring 92 is fixed in the connecting groove 91, the driving rod 82 extends into the connecting groove 91, a protruding ball 93 is installed on the driving rod 82, and the protruding ball 93 abuts against the inner wall of the elastic ring 92. Specifically, the connecting groove 91 is arranged along the length direction of the base 1, and the two sides of the connecting groove 91 are respectively connected with the mounting grooves of the two mounting rods 71, and the two driving rods 82 are inserted in the connecting groove 91, and two connecting grooves connected with the connecting groove 91 are symmetrically constructed. The expansion groove 94 is provided with two elastic rings 92, and the two elastic rings 92 are respectively located in the two expansion grooves 94. The diameters of the two ends of the elastic ring 92 are larger and the diameters in the middle are smaller, that is, the middle is thin and the two ends are thick. The two ends of the elastic ring 92 are fixed to the inner wall of the expansion groove 94. The function is that, under normal circumstances, the raised ball 93 on the driving rod 82 is attached to the inner wall of one end of the elastic ring 92. At this time, the driving rod 82 can rotate normally and cannot move along the connecting groove 91. When an external force is applied (when the handle 78 is pressed or the handle 78 is pulled out), the protruding ball 93 on the driving rod 82 is pressed against the inner wall of one end of the elastic ring 92. The raised ball 93 will then squeeze the smaller diameter portion of the elastic ring 92 and move to the other end of the elastic ring 92. When the raised ball 93 is located at the smaller diameter portion of the elastic ring 92, the elastic force of the elastic ring 92 will force the raised ball 93 to move to one end of the elastic ring 92, that is, the raised ball 93 can only stay at the two ends of the elastic ring 92 and will not stay in the middle of the elastic ring 92. The advantage is that the position of the drive rod 82 can be limited by the elastic ring 92. When the handle 78 is pressed, the raised ball 93 will squeeze the elastic ring 92. The elastic ring 92 moves to the end of the elastic ring 92 away from the corresponding handle 78. At this time, the protrusion 83 on the driving rod 82 completely enters the groove 84, and rotating the handle 78 can drive the second bevel gear 77 to rotate. When the handle 78 is pulled out, the protruding ball 93 moves to the other end of the elastic ring 92. At this time, the protrusion 83 on the driving rod 82 completely moves out of the groove 84, and rotating the handle 78 will not drive the second bevel gear 77 to rotate. In this way, the driving rod 82 can be limited to be in two states, and the state of the driving rod 82 can be switched by external force.

[0053] In one embodiment provided by the present invention, a first limiting mechanism is provided in the connecting groove 91, which is used to limit the two driving rods 82 from moving in sequence along the connecting groove 91. Specifically, the first limiting mechanism includes a first slide groove constructed on the connecting groove 91 and connected to the connecting groove 91, a first wedge block 101 is slidably connected in the first slide groove, a first spring 102 is fixed to the inner wall of the first slide groove, the other end of the first spring 102 is fixed to the first wedge block 101, and a second wedge block 103 is slidably connected to the inner wall of the connecting groove 91 along its length direction, and the first wedge block 101 and the second wedge block 103 are both constructed with mutually matching inclined surfaces, away from the rotating shaft 51. The end of the driving rod 82 on the side abuts against the outer wall of the first wedge block 101, and the end of the driving rod 82 on the side close to the rotating shaft 51 abuts against the outer wall of the second wedge block 103. The function is that when the handles 78 on the two mounting rods 71 ​​are operated respectively, the handle 78 on the side close to the rotating shaft 51 is pressed first to drive the driving rod 82 on the side close to the rotating shaft 51 to squeeze the second wedge block 103, so that the second wedge block 103 slides along the connecting groove 91 and presses the first wedge block 101 through the inclined surface, so that the first wedge block 101 squeezes the first spring 102 and moves into the first sliding groove, so that the first wedge block 101 is no longer in contact with the driving rod 82 on the side away from the rotating shaft 51. The end of the moving rod 82 is in conflict, so that the staff can press the handle 78 on the side away from the rotating shaft 51, thereby restricting the staff to operate the two driving rods 82 in sequence, first pressing the handle 78 on the side close to the rotating shaft 51 before pressing the handle 78 on the side away from the rotating shaft 51. The advantage is that when the mounting plate 4 is in the storage position, the center of gravity of the entire device is lower and biased to the side away from the rotating shaft 51. When disassembling the base 1, if there is only one operator, he or she needs to operate the handle 78 on the side close to the rotating shaft 51 first, and then operate the other handle 78. Since the center of gravity of the car is biased to the side away from the rotating shaft 51, the operator is not in a position to release the handle 78 when the mounting plate 4 is in the storage position. After the two connectors 73 on the side close to the rotating shaft 51 are connected to the luggage rack of the automobile, the connection between the base 1 and the luggage rack of the automobile depends entirely on the other two connectors 73 (i.e., the two connectors 73 far away from the rotating shaft 51), and the center of gravity of the entire device is also on the same side. This can effectively improve the stability when the device is disassembled, and try to avoid damage to the device caused by the center of gravity deviating from the support point when the device is disassembled. Then, the connection between the other two connectors 73 and the luggage rack of the automobile is released, and the device can be removed at the same time. If there are many operators, the two handles 78 can be pressed in succession, and then the connection between the connectors 73 on both sides and the luggage rack of the automobile can be released simultaneously.

[0054] Furthermore, a second limiting mechanism is provided in the connecting groove 91, which is used to limit the movement of the driving rod 82 along the connecting groove 91. Specifically, the second limiting mechanism is provided on a side of the connecting groove 91 close to the rotating shaft 51, and the second limiting mechanism includes a second slide groove constructed on the connecting groove 91, and the two sides of the second slide groove are respectively connected to the connecting groove 91 and the driving groove 53, and a brake rod 111 is slidably connected in the second slide groove, and a second spring 112 is fixed to the inner wall of the second slide groove, and the other end of the second spring 112 is fixed to the brake rod 111, and a roller 113 is installed at one end of the brake rod 111 close to the driving groove 53, and a gear rack 54 is configured to adapt to the roller 113. The adapter groove 114 is matched with the adapter groove 114, and the end of the brake rod 111 away from the roller 113 is constructed with an arc-shaped tooth plate 115, and the driving rod 82 is fixed with an annular tooth pattern 116. The function is that when the rack 54 drives the mounting plate 4 to move to the storage position, the adapter groove 114 moves to the top of the second slide groove. At this time, under the elastic force of the second spring 112, the brake rod 111 moves along the second slide groove to the side of the rack 54, so that the arc-shaped tooth plate 115 moves to a position where it is disengaged from the annular tooth pattern 116. At this time, the driving rod 82 can move along the connecting groove 91 (that is, the driving rod 82 can move to the position of driving the second bevel gear 77). Conversely, when the rack 54 drives the mounting plate 4 to move to the storage position, the adapter groove 114 moves to the top of the second slide groove. 4 starts to drive the mounting plate 4 to leave the storage position, the adapter groove 114 on the rack 54 can resist the roller 113, so that the brake rod 111 stretches the second spring 112 and moves to the side of the driving rod 82, so that the arc-shaped tooth plate 115 on the brake rod 111 is clamped to the annular tooth pattern 116 on the driving rod 82, thereby limiting the driving rod 82 from moving along the connecting groove 91. The advantage is that, first, when the mounting plate 4 moves to the storage position, the arc-shaped tooth plate 115 is disengaged from the annular tooth pattern 116. At this time, the staff can operate the driving rod 82 to change the position of the connecting head 73 to disassemble or install the device. When it is not in the storage position, the arc-shaped tooth plate 115 remains engaged with the annular tooth pattern 116. At this time, the driving rod 82 can rotate, but cannot move along the connecting groove 91 (that is, the driving rod 82 cannot move to the position of driving the second bevel gear 77 to rotate). This is to limit the operating specifications of the staff and try to avoid possible damage caused by forced operation when the mounting plate 4 is not moved to the storage position. Secondly, after the driving rod 82 on the side close to the rotating shaft 51 is restricted, it cannot squeeze the second wedge block 103 along the connecting groove 91, so that the other driving rod 82 cannot move along the connecting groove 91, thereby synchronously restricting the two driving rods 82 from moving along the connecting groove 91.

[0055] Furthermore, a third limiting mechanism is provided in the connecting groove 91, which is used to limit the movement of the rack 54 along the driving groove 53. Specifically, the third limiting mechanism includes two third sliding grooves symmetrically constructed on the connecting groove 91, and the two sides of the third sliding groove are respectively connected to the connecting groove 91 and the driving groove 53. A limiting rod 121 is slidably connected in the third sliding groove, and a third spring 122 is fixed in the third sliding groove. The other end of the third spring 122 is fixed on the limiting rod 121. A limiting groove 123 adapted to the limiting rod 121 is constructed on the rack 54, and a limiting ball 124 is installed at the end of the limiting rod 121 away from the rack 54. The end of the driving rod 82 away from the handle 78 is constructed with an annular inclined groove 1 25, the diameter of the annular bevel groove 125 near the handle 78 is greater than the diameter of the side near the first wedge block 101, and the limiting ball 124 abuts against the annular bevel groove 125. The function is that when the rack 54 drives the mounting plate 4 to move to the storage position, the limiting groove 123 is located above the corresponding third slide groove. Under the elastic force of the third spring 122, the limiting rod 121 will not enter the limiting groove 123. At this time, if the handle 78 is pressed to move the driving rod 82 to the position where the second bevel gear 77 can be driven, the limiting ball 124 can be forced to move into the third slide groove through the annular bevel groove 125, and the limiting rod 121 moves into the limiting groove 123, thereby limiting the rack 54 from moving. 4 moves in the driving groove 53. Conversely, when the two driving rods 82 move to the position where they cannot drive the second bevel gear 77, the limiting rod 121 is disengaged from the limiting groove 123 under the elastic force of the third spring 122, thereby releasing the restriction on the rack 54. The advantage is that when the mounting plate 4 moves to the storage position, the staff can press the two handles 78 so that the two driving rods 82 can drive the corresponding second bevel gear 77 to rotate to adjust the positions of the multiple connectors 73. At this time, the limiting rod 121 can be forced to insert into the corresponding limiting groove 123 through the annular inclined groove 125, so that the rack 54 is restricted and cannot slide in the driving groove 53. When the staff adjusts the multiple connectors, After the joint 73 is in the position, the handle 78 is pulled outward to move the driving rod 82 in the direction away from the first wedge block 101. At this time, under the elastic force of the third spring 122, the limiting rod 121 disengages from the limiting groove 123, thereby releasing the restriction of the limiting rod 121 on the rack 54, so that after the device is installed, the two driving rods 82 must be moved to a position where they cannot drive the corresponding second bevel gear 77 to rotate, and the rack 54 can move along the driving groove 53 to ensure that when the mounting plate 4 is moved out of the storage position, the two driving rods 82 cannot continue to drive the second bevel gear 77 to rotate, that is, the position of the multiple connectors 73 cannot be adjusted to ensure the connectivity between the base 1 and the luggage rack of the car.

[0056] In the above embodiment, the two driving rods 82 restrict each other, and the driving rod 82 and the rack 54 restrict each other, so as to force the staff to operate the device according to specific steps and maximize the safety and stability of the device when in use.

[0057] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A street text image acquisition device based on scene text detection and recognition technology, comprising a base and a collection device body, wherein the collection device body comprises a camera and a control center, and is characterized in that: Also includes: A storage slot, which is constructed on the top of the base; A mounting plate, which is fixed to the bottom of the collection device body, and the mounting plate is adapted to the storage slot; A storage mechanism, which is used to drive the mounting plate to be stored in the storage slot or to drive the mounting plate to be removed from the storage slot; The storage mechanism includes two rotating shafts rotatably connected in the storage groove, both ends of the two rotating shafts are fixed with hinged rods, and the top ends of the four hinged rods are rotatably connected to the mounting plate; Two mounting rods are fixed at the bottom of the base, and the mounting rods are configured with mounting grooves along their length directions, and two connecting rods are slidably connected in the mounting grooves, and connecting heads are provided at the ends of the two connecting rods, and two threaded rods are rotatably connected in the mounting grooves through bearings, and the two threaded rods are respectively threadedly connected to the two connecting rods, and a first bevel gear is fixed at one end of the two threaded rods close to each other, and a second bevel gear is rotatably connected to one side of the mounting rod through a bearing, and the two first bevel gears are meshed with the second bevel gear; a handle is fixed on the second bevel gear; A sleeve is fixed on the second bevel gear, the sleeve and the second bevel gear are coaxially arranged, and a through groove connected to the sleeve is configured on the inner hole of the second bevel gear, a driving rod is inserted on the mounting rod, and the driving rod is inserted in the through groove and the sleeve, a protrusion is fixed on the driving rod, and an end of the through groove close to the protrusion is configured with a groove portion, and the handle is fixed to the end head of the driving rod located outside the mounting rod, and the driving rod can be driven to move into the through groove by axially pressing the handle, and the protrusion on the driving rod will be stuck in the corresponding groove portion, so that when the driving rod rotates, the second bevel gear can be driven to rotate synchronously through the protrusion and the groove portion, and conversely, pulling the handle can drive the driving rod to move outward, so that the protrusion moves out of the groove portion to release the clamping connection between the driving rod and the second bevel gear; The base is provided with a connecting groove which is in communication with the mounting groove; The connecting groove is provided with a first limiting mechanism, which is used to limit the two driving rods to move along the connecting groove in sequence, the first limiting mechanism includes a first sliding groove constructed on the connecting groove and connected to the connecting groove, a first wedge block is slidably connected in the first sliding groove, a first spring is fixed to the inner wall of the first sliding groove, the other end of the first spring is fixed to the first wedge block, and a second wedge block is slidably connected to the inner wall of the connecting groove along its length direction, and the first wedge block and the second wedge block are both constructed with inclined surfaces that match each other, the end of the driving rod away from the rotating shaft side abuts against the outer wall of the first wedge block, and the end of the driving rod close to the rotating shaft side abuts against the outer wall of the second wedge block; When operating the handles on the two mounting rods respectively, first press the handle close to the rotating shaft to drive the driving rod close to the rotating shaft to squeeze the second wedge block, so that the second wedge block slides along the connecting groove and presses the first wedge block through the inclined surface, so that the first wedge block squeezes the first spring and moves into the first sliding groove, so that the first wedge block no longer conflicts with the end of the driving rod away from the rotating shaft, so as to press the handle away from the rotating shaft, thereby restricting the staff to operate the two driving rods in sequence.

2. The street text image acquisition device based on scene text detection and recognition technology according to claim 1 is characterized in that: The control center is provided with: Recognition module: used to perform scene recognition and / or text recognition on the images captured by the camera; A classification module, which classifies the image according to the results of the scene recognition and text recognition; A processing module performs processing based on the classification result and a preset processing logic and outputs the processing result.

3. The street text image acquisition device based on scene text detection and recognition technology according to claim 2 is characterized in that: The recognition module is also used to recognize the plaque in the picture.

4. The street text image acquisition device based on scene text detection and recognition technology according to claim 3 is characterized in that: The classification module identifies the plaque based on the appearance features, color features and text features of the plaque.

5. The street text image acquisition device based on scene text detection and recognition technology according to claim 4 is characterized in that: The classification module recognizes the same plaque in different pictures, and outputs a plaque in one of the pictures as a representative based on the recognition result.

6. The street text image acquisition device based on scene text detection and recognition technology according to claim 5 is characterized in that: The recognition module is also used to recognize and output the text on the plaque.

7. The street text image acquisition device based on scene text detection and recognition technology according to claim 1 is characterized in that: A driving groove is configured in the storage groove, a rack is slidably connected in the driving groove, gears are fixed on the two rotating shafts, and the two gears are meshed with the racks.

8. The street text image acquisition device based on scene text detection and recognition technology according to claim 7 is characterized in that: Four clamping blocks are arranged in the receiving groove, and the four hinged rods are all configured with clamping grooves on one side away from the rotating shaft, and a trigger mechanism is arranged in the receiving groove.

9. The street text image acquisition device based on scene text detection and recognition technology according to claim 1, characterized in that: The connecting rod is detachably connected to the connecting head, and the connecting head is provided in multiple groups.

Images