CN105208344A - Distributed mobile agricultural pest information acquisition and diagnosis system and embedded type camera - Google Patents
Distributed mobile agricultural pest information acquisition and diagnosis system and embedded type camera Download PDFInfo
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Abstract
The invention discloses a distributed mobile agricultural pest information acquisition and diagnosis system and an embedded type camera. The system comprises a portable image acquisition terminal and an image processing server which perform distributed computing to cooperatively complete an agricultural pest image diagnosis task; a mobile hand-held device synchronously browses scenes shot by the embedded type camera through a local area network and controls shooting of the embedded type camera; The embedded type camera comprises an image acquisition module, a JPEG coding module, a wireless network card control module, a camera control module, an H.264 coding module, an RTSP/RTP video transmission module, an environmental information collecting and writing module, an image preprocessing module and a feature extraction module; the image processing server comprises an agricultural pest diagnosing module, an agricultural pest information recording module and an information feedback module. According to the distributed mobile agricultural pest information acquisition and diagnosis system and the embedded type camera, communication is reduced, the computing burden is relieved, and meanwhile real-time acquisition, analysis and diagnosis of agricultural field pest information are guaranteed.
Description
Technical field
The invention belongs to the application of Digital Image Processing, be specifically related to agricultural pest information gathering under a kind of distributed environment and diagnostic system and embedded type camera.
Background technology
Agricultural pest information gathering is the first step of observing and predicting, and its real-time, accuracy and intelligence degree affect ageing, the accuracy of pestforecasting and the stable of Plant protection rank.At present, the mode that the investigation collection of National Agricultural great pestforecasting information mainly takes pest forecast lamp observation, the system investigation of sick worm observation field and the generaI investigation of agricultural scene to combine obtains, major part data all will go deep into agriculture field investigation counting by Forecast Techniques personnel, get back to after office arranges and could form the data that can report.The project of observing and predicting due to agricultural pest is many, content complete, sampling is many, and task is heavy, the time is long, and work treatment is on the low side, cause observing and predicting troop's shakiness, observe and predict data inaccuracy, not in time, not comprehensively, there is very large subjectivity, hinder the raising of great pest and disease monitoring pre-alerting ability.Existing observe and predict technique for investigation research and the development of agricultural pest information gathering instrument seriously delayed, become the outstanding problem hindering and observe and predict job development.Because agricultural pest image objectively can provide disease and insect information, many researchers are devoted to study the agricultural pest Intelligent Recognition based on image and the application of diagnostic techniques in agricultural pest is observed and predicted.But due to the difference of research purpose and research object, means and the instrument of its agricultural pest IMAQ are also not quite similar.1. obtain agricultural pest image with digital camera or industrial camera in field or laboratory, object is the algorithm automatically identifying to study agricultural pest or diagnose, and generally can obtain good recognition result; Digital camera is only the instrument of auxiliary shooting disease and pest image, and the instrument that observes and predicts as the on-the-spot sick worm of agricultural still has a lot of inconvenience.2. IP Camera is erected at agricultural on-the-spot, by wired or wireless transmission of video or image to background server so that the agriculture on-the-spot disease and pest of Real-Time Monitoring a situation arises.Due to the impact by communications cost, transmission rate, the resolution of general pattern is not high, and whole system price is more expensive.In addition, due to agriculture site environment more complicated, the identification of agricultural pest, diagnosis and monitoring and warning still need artificial participation.3. special portable agriculture image capture instrument is used to carry out the collection of disease and pest image to agriculture scene, but the resolution of most of imageing sensor is lower, general below 5,000,000 pixels, under the agricultural environment background of complexity, identify with to diagnose similar disease and pest and less insect and scab effect poor with the image of lower pixel; These portable image capture instrument need to spend more post and telecommunication tariff by radio transmitting image data, simultaneously at the image of server-side processes from multiple Acquisition Instrument, have increased the weight of server operation burden, affect the real-time of agricultural pest diagnosis.
When agricultural pest is observed and predicted, Forecast Techniques personnel often need to bow the disease and pest bending over to investigate and occur in crops basal part of stem or come back on tiptoe and investigate fruit tree diseases and pests, thus Forecast Techniques personnel are easily felt fatigue, operating efficiency is low, the data of investigation are easily made mistakes with inaccurate, affect the real-time and accuracy of observing and predicting, greatly reduce the enthusiasm of Forecast Techniques personnel.But these above-mentioned image capture devices cannot make the personnel of observing and predicting collect staff and sight line to be easily difficult to reach the disease and pest image at position.
Summary of the invention
For achieving the above object, the invention provides a kind of distributed shifting agriculture disease and insect information and gather and diagnostic system and embedded type camera, the technical scheme adopted is:
A kind of distributed shifting agriculture disease and insect information gathers and diagnostic system, and comprise portable image capture terminal and image processing server, IMAQ terminal and server carry out distributed arithmetic, have worked in coordination with agricultural pest diagnostic imaging task;
Wherein, described IMAQ terminal comprises embedded type camera, mobile hand-held device and holding rod, embedded type camera is placed in holding rod leading portion, embedded type camera sets up into local area network (LAN) with mobile hand-held device, mobile hand-held device by the scene captured by local area network (LAN) synchronous browsing embedded type camera, and controls the shooting of embedded type camera; Described embedded type camera comprises image capture module, JPEG coding module, wireless network card control module, camera control module, H.264 coding module, RTSP/RTP video transmission module, environment information acquisition and writing module, image pre-processing module and characteristic extracting module; Described image processing server comprises agricultural pest diagnostic module, agricultural pest information logging modle and information feedback module.
Image semantic classification described in built-in GPU and CPU of described embedded type camera, described GPU run and characteristic extracting module, and (all the other modules can transfer to camera CPU process or by the more module of GPU process); Server end receives the packet from embedded type camera by wireless network, and server CPU runs agricultural pest diagnostic module, environmental information logging modle and information feedback module according to packet.
Described image capture module by calling V4l2 Programming in Digital Image Processing interface and the expansion interface thereof of Linux, complete successively the selection of image capture device, the resolution setting of image capture device, the input resolution of embedded chip ISP equipment, V4L2 picture frame size and buffered frame queue length, gather the yuv format of image, obtain the address mapping scheme step of picture frame; On this basis, open V4L2 image stream and gather switch, and take out specific yuv format image frame data in picture frame buffer queue, thus complete the collection of agricultural pest original image;
Open source code jpeglib code database is transplanted in embedded type camera by described JPEG coding module, the function such as initialization, optimum configurations, coding that JPEG coding module calls this code database successively completes the coding to YUV image, completes and encodes to the JPEG of original image;
Described wireless network card control module realize WiFi network interface card slave to master pattern switching, soft App APN and password are set and start App certificate server, start Dynamic Host Configuration Protocol server, be the mobile hand-held device distributing IP address of access and the routing forwarding rule functional that this soft App is set.
Described camera control module will monitor the arrival of mobile hand-held device App control command in fixing socket port, once namely the connection request receiving mobile hand-held device App is set up, the TCP being exclusively used in control command transmission is long to be connected, receive the various control commands that mobile hand-held device is sent, and perform associative operation concomitantly according to command context control camera; Camera control commands comprises camera status inquiry (comprising SD card surplus, battery allowance, GPS information), the format of SD card, original image transfer to mobile hand-held device, take pictures, time setting and acquisition SD card photo files list of file names.
First H.264 coding module in described embedded type camera sets the parameters of encoder, comprise the yuv format of input picture, the resolution of video, the frame per second of video, the frequency of key frame appearance, the bit rate of encoder, the parameter configured with these again opens encoder, then by the YUV image data input coding device of internal memory alignment, finally perform encoder encodes function, complete the H.264 coding to YUV image, and on fixing address space, obtain the H.264 video requency frame data after coding;
RTSP/RTP video transmission module in described embedded type camera builds a server meeting standard RTSP/RTP real time streaming agreement to browse the photographed scene of embedded type camera, scene image information is after H.264 hardware coder compresses, at once obtained by the RTP sending module of shared drive with it, and send to mobile hand-held device APP to play according to after the length of this video and size packing.
Environment information acquisition in described embedded type camera and writing module complete Agricultural Geography environment information acquisition, comprise the humiture information of GPS geographical location information, agricultural environment; GPS information collection is completed by timer driver, system is by the longitude of the renewal Current GPS of timing, latitude, speed, height and gps clock information, after system completes the JPEG coding of image, GPS information collection and writing module write current GPS information in jpeg file together with the jpeg data after coding in accordance with EXIF form.
Described image pre-processing module selects different preprocess methods according to different agricultural pest images; Described image characteristics extraction module, according to the different global characteristics of different agricultural pest image zooming-out and local feature, reduces communication information amount, reduces the load of server end, improve the processing capability in real time of agricultural pest information.
The functional module that described mobile hand-held device realizes mainly comprises player module, video and Photo Browser module, mixed-media network modules mixed-media and camera control module.
The agricultural pest diagnostic module of described server end comprises diagnostic model and the expert system of agricultural pest, when server receives the packet from the embedded type camera of each IMAQ end by wireless network, extract the agricultural pest image feature information in packet and Agricultural Geography environmental information, realized analysis and the diagnosis of agricultural pest by agricultural pest diagnostic module.
The agricultural pest information logging modle of described server end realizes storage and the maintenance of historical record, the diagnostic result of agricultural pest diagnostic module and geography information are preserved, the data of essential record do not comprise photo opporunity, GPS geography information, sick insects not and quantity, agricultural environment information, realize the record of historical information.
The information feedback module of described server end is by agricultural pest diagnostic result and prevent and treat information feed back on the mobile hand-held device of correspondence.
A kind of distributed shifting agriculture disease and insect information gathers and diagnosis embedded type camera,
Described embedded type camera comprises image capture module, JPEG coding module, wireless network card control module, camera control module, H.264 coding module, RTSP/RTP video transmission module, environment information acquisition and writing module, image pre-processing module and characteristic extracting module;
Built-in GPU and CPU of described embedded type camera, described GPU and CPU process exports packet, the Image semantic classification described in described GPU runs and characteristic extracting module;
Described image pre-processing module selects different preprocess methods according to different agricultural pest images; Described image characteristics extraction module is according to the different global characteristics of different agricultural pest image zooming-out and local feature;
Described environment information acquisition and writing module complete Agricultural Geography environment information acquisition, comprise the humiture information of GPS geographical location information, agricultural environment; GPS information collection is completed by timer driver, system is by the longitude of the renewal Current GPS of timing, latitude, speed, height and gps clock information, after system completes the JPEG coding of image, GPS information collection and writing module write current GPS information in jpeg file together with the jpeg data after coding in accordance with EXIF form.
Technique scheme of the present invention has following characteristics compared to existing technology:
The distributed shifting agriculture disease and insect information of described one gathers and diagnostic system, and it comprises the distributed system of portable image capture terminal and image processing server composition.Wherein, IMAQ terminal comprises embedded type camera, the mobile hand-held device configuring control App and holding rod; System utilizes GPU, CPU in embedded type camera and server CPU distributed arithmetic by mixing isomery mode, work in coordination with agricultural pest diagnostic imaging task, decrease post and telecommunication tariff and alleviate server operation burden, ensure the process in real time fast of agricultural pest view data.Agriculture technical staff browses the embedded type camera image of front end by mobile hand-held device, and controls the shooting of camera, can be difficult to reach the agricultural pest image at position in on-the-spot staff and the sight line of collecting easily of agricultural.
Accompanying drawing explanation
Fig. 1 is that distributed shifting agriculture disease and insect information gathers and diagnostic system structural representation;
Fig. 2 is systematic schematic diagram;
Fig. 3 is embedded type camera Information Monitoring process chart;
Fig. 4 is before the segmentation of agricultural pest image background and the rear exemplary plot of segmentation.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, a kind of distributed shifting agriculture disease and insect information collection and diagnostic system comprises multiple portable image capture terminal and an image processing server forms, wherein each IMAQ terminal comprises the mobile hand-held device of embedded type camera, holding rod and configuration control APP.Mobile hand-held device adopts Pad, mobile phone or mini-notebook etc.; Holding rod can stretch according to agricultural pest collection position; Embedded type camera is generally placed in holding rod leading portion.
As shown in Figure 2, embedded type camera CPU operation image acquisition module, JPEG coding module, wireless network card control module, camera control module, H.264 coding module, RTSP/RTP video transmission module and environment information acquisition and writing module; Embedded type camera GUP operation image pretreatment module and characteristic extracting module; Server CPU runs agricultural pest diagnostic module, agricultural pest information logging modle and information feedback module.Native system, to mix the mode of isomery by camera GPU, CPU and the various algorithm of server CPU Coordination Treatment, realizes camera and server distributed arithmetic.
As shown in Figure 3, embedded type camera workflow.First, open video equipment file, carry out the parameter initialization of video acquisition, the acquisition window of video image, the dot matrix size of collection and form are set by V4L2 interface; Then, apply for the frame buffer zone of some video acquisitions, and these frame buffer zones are mapped to user's space from kernel spacing, be convenient to application program reading/processing video data; Secondly, is queued up in video acquisition input rank in the frame buffer zone of applying for arriving, and start video acquisition; At this moment, drive the collection starting video data, application program takes out frame buffer zone from video acquisition output queue, after processing, frame buffer zone is reentered into video acquisition input rank.While the process of taking pictures, obtain GPS information, obtained by libexif and libjpeg and generate jpeg image, then, image procossing is carried out to JPEG picture, comprise background segment and feature extraction; Finally, agricultural pest packet, i.e. agricultural pest characteristic and agricultural environment data are generated.
If described embedded type camera does not become distributed shifting agriculture disease and insect information gather the part with diagnostic system, also can work independently, this kind of purposes it will be apparent to those skilled in the art that.
Embodiment
Distributed shifting agriculture disease and insect information of the present invention gathers with diagnostic system general step as follows:
(1) agriculture technical staff is on-the-spot in agricultural, on the other hand the holding rod of hand-held image acquisition terminal, on the other hand hand-held mobile palmtop PC, and we adopt mobile phone in this embodiment; The length of the position adjustments holding rod of target is gathered according to agricultural pest, and by the embedded type camera of front end near the agricultural pest position that will gather.Utilize the portable image capture terminal of this patent, agriculture technical staff bend over to investigate without the need to bowing occur in crops basal part of stem disease and pest or cat ladder to investigate fruit tree diseases and pests, only need flexible by holding rod in situation of naturally standing, just can by mobile phone preview and the collection image with the more unattainable agricultural pest position of sight line in one's hands.This patent improves the operating efficiency of agriculture technical staff, alleviates physical fatigue and discomfort, and the accuracy improving survey data and the real-time of observing and predicting, transferred the enthusiasm of agrotechnical technical staff.
(2) embedded type camera and mobile phone set up wireless connections by soft App or Wi-FiDirect technology.Embedded type camera will gather the state informations such as SD card surplus, battery allowance, GPS location after starting, and receive " reporting " that display end App sends order after by above-mentioned state reporting to mobile phone.
(3) after user opens mobile phone A pp, mobile phone is by unlatching RTSP client and a RTP server, and issue the order of RTSP video preview to camera, after camera receives orders, initialization cmos image sensor is set hardware video encoders parameter, then control cmos image sensor and gather image information, and image information is sent into hardware coder and be encoded into H.264 frame of video, finally frame of video is encapsulated in RTP packet and is sent to mobile phone terminal RTP server.Mobile phone terminal App, after receiving RTP packet, extracts H.264 frame of video send into H.264 decoder, is finally shown on mobile phone broadcast interface by decoded video in RTP packet.User selectes the scene that will take according to preview video after, button of taking pictures is pressed at mobile phone terminal App, mobile phone terminal App will send photographing command to camera, cmos image sensor is set to high definition resolution after receiving photographing command by camera again, break of video preview function, then carries out JPEG compression by the image collected; System is by the longitude of the renewal Current GPS of timing, latitude, speed, height and gps clock information, after system completes the JPEG coding of image, GPS information collection and writing module write current GPS information in jpeg file together with the jpeg data after coding in accordance with EXIF form.This subprogram runs on the CPU of camera.
(4) the agricultural pest image collected is carried out Image semantic classification by the image pre-processing module of embedded type camera, realizes the extraction in disease and pest region; The Preprocessing Algorithm that different disease and pest is corresponding different, mainly comprises based on the background removal of color characteristic, the background segment method detected based on conspicuousness, the background segment method of cutting based on figure and the image partition method etc. based on OSTU; This some algorithm runs on the GPU of camera.The scab that the present embodiment collects rice field, rice grub Damage pattern and rice grub have carried out background segment, and segmentation effect as shown in Figure 4.
(5) characteristics of image of agricultural pest extracted region disease and pest that will obtain after segmentation of the image characteristics extraction module of embedded type camera; Characteristics of image comprises the extraction of global characteristics and local feature; Global characteristics comprises color characteristic, textural characteristics and morphological feature, and local feature comprises HOG feature, LBP feature, Haar-like feature etc.; The image characteristics extraction algorithm that different disease and pests is corresponding different, according to the agricultural pest image particular type collected, selects corresponding image characteristics extraction algorithm; This some algorithm runs on the GPU of camera.
(6) embedded type camera sends the packet of agricultural pest image feature information and Agricultural Geography environmental information by wireless network, after server receives packet, by analysis and the diagnosis of different types of agricultural pest diagnostic module and this disease and pest of Implementation of Expert System.
(7) information such as agricultural pest information logging modle record photo opporunity, GPS geography information, pest diagnosis result, agricultural environment (humiture) of server end, realizes the record of historical information.
(8) server end information feedback module by agricultural pest diagnostic result and control information feed back on the mobile hand-held device of correspondence.
(9) native system is by agricultural pest Image semantic classification and feature extraction algorithm are from server migration to embedded type camera, image feature data only need be sent to server by embedded type camera, server processes packet, feeds back agricultural pest diagnostic result and prevents and treats information.At present for the IP Camera of the on-the-spot pest and disease monitoring of agricultural, by the wired or wireless transmission ready-made video of agricultural or image to background server, still need by manually participating in identification and diagnosing agricultural pest image; In addition, fixing camera collection to image be generally the disease and insect information of corps canopy, the disease and pest of crops bottom cannot be collected., there is the problem that resolution is lower in special portable agriculture image capture instrument, generally about 5,000,000 pixels; Meanwhile, the image collected needs Artificial Diagnosis or uploads onto the server to carry out image procossing and expert system identification, has increased the weight of the burden of server operation.Carried out the extraction of global characteristics and local feature to rice pest in the present embodiment, data volume is reduced to about 5-100K from about 2M.The image of each IMAQ terminal collection every day may reach tens to pictures up to a hundred, IMAQ terminal is allowed to carry out preliminary treatment and feature extraction to image, only send the characteristic of image, greatly reduce mobile rate, alleviate power consumption and the computational burden of image server.
Claims (10)
1. a distributed shifting agriculture disease and insect information gathers and diagnostic system, it is characterized in that, it comprises portable image capture terminal and image processing server, and IMAQ terminal and server carry out distributed arithmetic, has worked in coordination with agricultural pest diagnostic imaging task;
Wherein, described IMAQ terminal comprises embedded type camera, mobile hand-held device and holding rod, embedded type camera is placed in holding rod leading portion, embedded type camera sets up into local area network (LAN) with mobile hand-held device, mobile hand-held device by the scene captured by local area network (LAN) synchronous browsing embedded type camera, and controls the shooting of embedded type camera; Described embedded type camera comprises image capture module, JPEG coding module, wireless network card control module, camera control module, H.264 coding module, RTSP/RTP video transmission module, environment information acquisition and writing module, image pre-processing module and characteristic extracting module; Described image processing server comprises agricultural pest diagnostic module, agricultural pest information logging modle and information feedback module.
2. system according to claim 1, is characterized in that, built-in GPU and CPU of described embedded type camera, the Image semantic classification described in described GPU runs and characteristic extracting module; Server end receives the packet from embedded type camera by wireless network, and server CPU runs agricultural pest diagnostic module, environmental information logging modle and information feedback module according to packet.
3. system according to claim 1, it is characterized in that, described image capture module by calling V4l2 Programming in Digital Image Processing interface and the expansion interface thereof of Linux, complete successively the selection of image capture device, the resolution setting of image capture device, the input resolution of embedded chip ISP equipment, V4L2 picture frame size and buffered frame queue length, gather the yuv format of image, obtain the address mapping scheme step of picture frame; On this basis, open V4L2 image stream and gather switch, and take out specific yuv format image frame data in picture frame buffer queue, thus complete the collection of agricultural pest original image;
Open source code jpeglib code database is transplanted in embedded type camera by described JPEG coding module, the function such as initialization, optimum configurations, coding that JPEG coding module calls this code database successively completes the coding to YUV image, completes and encodes to the JPEG of original image;
Described wireless network card control module realize WiFi network interface card slave to master pattern switching, soft App APN and password are set and start App certificate server, start Dynamic Host Configuration Protocol server, be the mobile hand-held device distributing IP address of access and the routing forwarding rule functional that this soft App is set.
4. system according to claim 1, it is characterized in that, described camera control module will monitor the arrival of mobile hand-held device App control command in fixing socket port, once namely the connection request receiving mobile hand-held device App is set up, the TCP being exclusively used in control command transmission is long to be connected, receive the various control commands that mobile hand-held device is sent, and perform associative operation concomitantly according to command context control camera; Camera control commands comprises camera status inquiry, the format of SD card, original image transfer to mobile hand-held device, take pictures, time setting and acquisition SD card photo files list of file names.
5. system according to claim 1, it is characterized in that, first H.264 coding module in described embedded type camera sets the parameters of encoder, comprise the yuv format of input picture, the resolution of video, the frame per second of video, the frequency that key frame occurs, the bit rate of encoder, the parameter configured with these again opens encoder, then by the YUV image data input coding device of internal memory alignment, finally perform encoder encodes function, complete the H.264 coding to YUV image, and the H.264 video requency frame data obtained on fixing address space after coding,
RTSP/RTP video transmission module in described embedded type camera builds a server meeting standard RTSP/RTP real time streaming agreement to browse the photographed scene of embedded type camera, scene image information is after H.264 hardware coder compresses, at once obtained by the RTP sending module of shared drive with it, and send to mobile hand-held device APP to play according to after the length of this video and size packing.
6. system according to claim 1, is characterized in that, the environment information acquisition in described embedded type camera and writing module complete Agricultural Geography environment information acquisition, comprises the humiture information of GPS geographical location information, agricultural environment; GPS information collection is completed by timer driver, system is by the longitude of the renewal Current GPS of timing, latitude, speed, height and gps clock information, after system completes the JPEG coding of image, GPS information collection and writing module write current GPS information in jpeg file together with the jpeg data after coding in accordance with EXIF form.
7. system according to claim 1, is characterized in that, described image pre-processing module selects different preprocess methods according to different agricultural pest images; Described image characteristics extraction module, according to the different global characteristics of different agricultural pest image zooming-out and local feature, reduces communication information amount, reduces the load of server end, improve the processing capability in real time of agricultural pest information.
8. system according to claim 1, is characterized in that, the functional module that described mobile hand-held device realizes mainly comprises player module, video and Photo Browser module, mixed-media network modules mixed-media and camera control module.
9. system according to claim 1, it is characterized in that, the agricultural pest diagnostic module of described server end comprises diagnostic model and the expert system of agricultural pest, when server receives the packet from the embedded type camera of each IMAQ end by wireless network, extract the agricultural pest image feature information in packet and Agricultural Geography environmental information, realized analysis and the diagnosis of agricultural pest by agricultural pest diagnostic module;
The agricultural pest information logging modle of described server end realizes storage and the maintenance of historical record, the diagnostic result of agricultural pest diagnostic module and geography information are preserved, the data of essential record do not comprise photo opporunity, GPS geography information, sick insects not and quantity, agricultural environment information, realize the record of historical information;
The information feedback module of described server end is by agricultural pest diagnostic result and prevent and treat information feed back on the mobile hand-held device of correspondence.
10. distributed shifting agriculture disease and insect information gathers and a diagnosis embedded type camera, it is characterized in that,
Described embedded type camera comprises image capture module, JPEG coding module, wireless network card control module, camera control module, H.264 coding module, RTSP/RTP video transmission module, environment information acquisition and writing module, image pre-processing module and characteristic extracting module;
Built-in GPU and CPU of described embedded type camera, described GPU and CPU process exports packet, the Image semantic classification described in described GPU runs and characteristic extracting module;
Described image pre-processing module selects different preprocess methods according to different agricultural pest images; Described image characteristics extraction module is according to the different global characteristics of different agricultural pest image zooming-out and local feature;
Described environment information acquisition and writing module complete Agricultural Geography environment information acquisition, comprise the humiture information of GPS geographical location information, agricultural environment; GPS information collection is completed by timer driver, system is by the longitude of the renewal Current GPS of timing, latitude, speed, height and gps clock information, after system completes the JPEG coding of image, GPS information collection and writing module write current GPS information in jpeg file together with the jpeg data after coding in accordance with EXIF form.
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