TWI421615B - A method of automatically synchronizing digital camera time with GPS time - Google Patents
A method of automatically synchronizing digital camera time with GPS time Download PDFInfo
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Description
本發明係有關一種使數位相機照片時間與GPS時間自動同步的方法。The present invention relates to a method of automatically synchronizing digital camera photo time with GPS time.
數位相機的使用目前已相當普及。使用數位相機所拍攝的照片通常採用JPEG的圖形檔案壓縮格式來進行照片的儲存或處理,可交換式影像檔案格式(EXIF)可以附加於數位照片之JPEG圖形檔案壓縮格式中,用以增加有關數位相機之拍攝資訊的內容和索引圖像或影像處理軟體的版本資訊等等,而在數位照片的EXIF欄位中加進全球衛星定位系統(GPS)經緯度座標資料就目前而言更屬相當普遍的應用。The use of digital cameras is now quite popular. Photographs taken with a digital camera are usually stored or processed using JPEG's graphic file compression format. The interchangeable image file format (EXIF) can be added to the JPEG graphic file compression format of digital photos to increase the number of digits. The content of the camera's shooting information and the version of the index image or image processing software, etc., and the addition of Global Positioning System (GPS) latitude and longitude coordinates to the EXIF field of digital photos is now quite common. application.
EXIF係專門用於數位相機所拍攝的照片檔案,用以記錄數位照片的各項設定資料,其中,記錄的資料包括:相機製造商、相機型號、解析度、最後修改時間、ISO值、光圈值、曝光時間、拍攝模式等資料,以方便供使用者日後查閱之用。EXIF is specially used for photo files taken by digital cameras to record various settings of digital photos. The recorded data includes: camera manufacturer, camera model, resolution, last modification time, ISO value, aperture value. , exposure time, shooting mode and other information, for the convenience of users for future reference.
將GPS經緯度座標資料加進數位照片的EXIF欄位中之操作的基本流程係如下:(1)匯入照片檔案;(2)匯入GPS軌跡檔案;及(3)輸入數位相機時間與UTC(世界標準時間)時 間的時間差(D_UTC)。The basic flow of the operation of adding GPS latitude and longitude coordinate data to the EXIF field of a digital photo is as follows: (1) importing a photo file; (2) importing a GPS track file; and (3) inputting a digital camera time and UTC ( World standard time) The time difference between them (D_UTC).
其中,時間差(D_UTC)是使時間同步的重要因子,其誤差更會直接造成照片與實際拍攝位置的偏移。Among them, the time difference (D_UTC) is an important factor to make the time synchronization, and the error directly causes the deviation of the photo from the actual shooting position.
然而,數位相機時間與UTC時間的時間差(D_UTC)之輸入的準確性對絕大多數的使用者來說是相當困難的。況且,由於係藉由人工來輸入數位相機時間與UTC時間的時間差(D_UTC),容易發生不精確、費時、且易輸入錯誤等問題。However, the accuracy of the input of the digital camera time to the UTC time (D_UTC) is quite difficult for most users. Moreover, since the time difference (D_UTC) between the digital camera time and the UTC time is manually input, problems such as inaccuracy, time consuming, and easy input errors are apt to occur.
因此,本發明之目的在於提供一種使數位相機照片時間與GPS時間自動同步的方法,可大幅簡化操作流程,並降低人為輸入的錯誤率,以達成更加準確的結果。Accordingly, it is an object of the present invention to provide a method for automatically synchronizing digital camera photo time with GPS time, which greatly simplifies the operation flow and reduces the error rate of human input to achieve more accurate results.
依據本發明之一樣態,提供有一種使數位相機照片時間與GPS時間自動同步的方法,包含步驟:在使用數位相機拍攝照片之前,先開啟具有時間/日期顯示功能之GPS裝置,並且在定位完成之後,拍攝以記錄該GPS裝置的時間/日期顯示畫面;記錄GPS軌跡;進行一般照片的拍攝作業;完成所有照片的拍攝作業;在電腦端開啟具有自動同步功能之照片座標(Geotag)整合軟體;匯入照片檔案與GPS軌跡檔案;選擇自動同步功能,並指定在拍攝以記錄該GPS裝置的時間/日期顯示畫面的步驟中之JPEG檔案(UTC_SYNC_JPG),而且,該整合軟體會自動擷取所拍攝之照片檔案中之EXIF欄位中的照片拍攝時間(PHOTO_SHOT_TIME),和以光學字元辨識(OCR)方式而自動辨識照片上所拍攝之該GPS裝置的該時間/日期顯示畫面所取得之GPS UTC時間(PHOTO_UTC_TIME),進而根據該照片拍攝時間(PHOTO_SHOT_TIME)和該UTC時間(PHOTO_UTC_TIME)而計算出時間差(D_UTC);及根據所取得之時間差(D_UTC),再比對每一張照片中的拍攝時間和該GPS軌跡檔案中每一個軌跡點的UTC時間,以便在該GPS軌跡檔案內正確地找到每張照片的經緯度座標,並且將所取得之經緯度座標資料加進該張照片的EXIF欄位中,以完成照片座標(Geotag)整合。According to the state of the present invention, there is provided a method for automatically synchronizing a digital camera photo time with a GPS time, comprising the steps of: turning on a GPS device having a time/date display function before taking a photo using a digital camera, and positioning is completed. Thereafter, shooting to record the time/date display screen of the GPS device; recording the GPS track; performing a general photo shooting operation; completing the shooting operation of all the photos; and opening the Geotag integrated software with automatic synchronization function on the computer; Import photo files and GPS track files; select the auto sync function and specify the JPEG file (UTC_SYNC_JPG) in the step of recording the time/date display of the GPS device, and the integrated software will automatically capture the captured image. The photo shooting time (PHOTO_SHOT_TIME) in the EXIF field in the photo file, and the GPS UTC obtained by automatically recognizing the time/date display of the GPS device photographed on the photo by optical character recognition (OCR) Time (PHOTO_UTC_TIME), depending on the photo capture time (PHOTO_SHOT_TIME) and the UTC time ( PHOTO_UTC_TIME) calculates the time difference (D_UTC); and according to the obtained time difference (D_UTC), compares the shooting time in each photo with the UTC time of each track point in the GPS track file, so as to be in the GPS track The latitude and longitude coordinates of each photo are correctly found in the file, and the obtained latitude and longitude coordinate data is added to the EXIF field of the photo to complete the integration of the photo coordinates (Geotag).
依據本發明之另一樣態,提供有一種使數位相機照片時間與GPS時間自動同步的方法,其利用圖片文字辨識技術和EXIF解析方式,自含有UTC時間顯示的照片擷取出照片拍攝時間資料及UTC時間資料,並計算出拍攝時間與UTC時間的時間差(D_UTC)。According to another aspect of the present invention, there is provided a method for automatically synchronizing a digital camera photo time with a GPS time, which uses image text recognition technology and EXIF analysis method to extract photo shooting time data and UTC from photos containing UTC time display. Time data and calculate the time difference between the shooting time and UTC time (D_UTC).
依據本發明之又一樣態,提供有一種使數位相機照片時間與GPS時間自動同步的方法,其藉由拍攝GPS裝置之時間畫面或任何可以顯示目前之UTC時間的裝置,利用圖片文字辨識技術而將UTC時間反饋,並校正原來的攝像裝置之時間。According to still another aspect of the present invention, there is provided a method for automatically synchronizing a digital camera photo time with a GPS time by using a picture text recognition technology by capturing a time picture of the GPS device or any device capable of displaying the current UTC time. The UTC time is fed back and the time of the original camera is corrected.
現在,將於下文中參照附圖來說明依據本發明之較佳實施例。然而,依據本發明之較佳實施例的敘述僅做為舉例說明用,而非用來限制本發明。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments in accordance with the present invention will be described with reference to the accompanying drawings. However, the description of the preferred embodiments of the present invention is intended to be illustrative only and not limiting.
下面,參照圖1來說明依據本發明第一實施例之使數位相機照片時間與GPS時間自動同步的方法。Next, a method of automatically synchronizing a digital camera photo time with a GPS time according to a first embodiment of the present invention will be described with reference to FIG.
圖1為顯示依據本發明第一實施例之使數位相機照片時間與GPS時間自動同步的方法之流程圖。1 is a flow chart showing a method of automatically synchronizing a digital camera photo time with a GPS time in accordance with a first embodiment of the present invention.
在步驟101,於使用數位相機來拍攝照片之前,先開啟GPS裝置,而GPS裝置具有時間/日期顯示功能。接著,在定位完成之後,拍攝以記錄GPS裝置的時間/日期顯示畫面。In step 101, the GPS device is turned on before the photo camera is used to take a photo, and the GPS device has a time/date display function. Then, after the positioning is completed, photographing is taken to record the time/date display screen of the GPS device.
在步驟102,開始記錄GPS軌跡。At step 102, recording of the GPS trajectory begins.
在步驟103,開始進行一般照片的拍攝作業。At step 103, a shooting operation of a general photograph is started.
在步驟104,完成所有照片的拍攝作業。At step 104, the shooting of all the photos is completed.
在步驟105,於電腦端開啟具有自動同步功能之照片座標(Geotag)整合軟體。In step 105, the photo tag (Geotag) integration software with automatic synchronization function is turned on on the computer side.
在步驟106,將照片檔案與GPS軌跡檔案匯入。At step 106, the photo archive and the GPS track file are imported.
在步驟107,選擇自動同步功能,並指定步驟101中之JPEG檔案(UTC_SYNC_JPG)。此時,整合軟體會自動擷取所拍攝之照片檔案中的兩項資料來進行時間同步處理,亦即,EXIF欄位中的照片拍攝時間(PHOTO_SHOT_TIME),和以光學字元辨識(OCR)方式而自動辨識照片上所拍攝之GPS裝置的時間/日期顯示畫面所取得之GPS UTC時間(PHOTO_UTC_TIME)。然後,時間差(D_UTC)=PHOTO_SHOT_TIME-PHOTO_UTC_TIME。At step 107, the automatic sync function is selected and the JPEG file (UTC_SYNC_JPG) in step 101 is specified. At this point, the integration software will automatically capture the two data in the captured photo file for time synchronization, that is, the photo shooting time (PHOTO_SHOT_TIME) in the EXIF field, and the optical character recognition (OCR) method. The GPS UTC time (PHOTO_UTC_TIME) obtained by the time/date display of the GPS device captured on the photo is automatically recognized. Then, the time difference (D_UTC) = PHOTO_SHOT_TIME - PHOTO_UTC_TIME.
最後,在步驟108,根據所取得之精確的D_UTC,再比對每一張照片中的拍攝時間和GPS軌跡檔案中每一個軌跡點的UTC時間,即可在GPS軌跡檔案內正確地找到每張照片的經緯度座標(如果記錄時間的間隔大於1秒,則可採用內插法,以取得正確的經緯度座標),並且將所取得之經緯度座標資料加進該張照片的EXIF欄位中,即完成照片座標(Geotag)整合。Finally, in step 108, according to the obtained accurate D_UTC, and comparing the shooting time in each photo with the UTC time of each track point in the GPS track file, each piece can be correctly found in the GPS track file. The latitude and longitude coordinates of the photo (if the recording time interval is greater than 1 second, interpolation can be used to obtain the correct latitude and longitude coordinates), and the obtained latitude and longitude coordinate data is added to the EXIF field of the photo, that is, the completion Photo coordinates (Geotag) integration.
此外,針對依據本發明第二實施例之使數位相機照片時間與GPS時間自動同步的方法,其利用圖片文字辨識技術和EXIF解析方式,自含有UTC時間顯示的照片擷取出照片拍攝時間資料及UTC時間資料,並計算出拍攝時間與UTC時間的時間差(D_UTC)。In addition, with respect to the method for automatically synchronizing the digital camera photo time with the GPS time according to the second embodiment of the present invention, the image recognition method and the EXIF analysis method are used to extract the photo shooting time data and the UTC from the photo containing the UTC time display. Time data and calculate the time difference between the shooting time and UTC time (D_UTC).
另外,針對依據本發明第三實施例之使數位相機照片時間與GPS時間自動同步的方法,其藉由拍攝GPS裝置之時間畫面或任何可以顯示目前之UTC時間的裝置,利用圖片文字辨識技術而將UTC時間反饋,並校正原來的攝像裝置之時間,而原來的攝像裝置包含,例如,數位相機、個人電腦(PC)、筆記型電腦(NB)、手機、個人數位助理(PDA)、等等。In addition, with respect to the method for automatically synchronizing the digital camera photo time with the GPS time according to the third embodiment of the present invention, the image recognition function is utilized by taking a time picture of the GPS device or any device capable of displaying the current UTC time. The UTC time is fed back and the time of the original camera device is corrected, and the original camera device includes, for example, a digital camera, a personal computer (PC), a notebook computer (NB), a mobile phone, a personal digital assistant (PDA), and the like. .
因此,從上述可知,依據本發明第二及第三實施例之使數位相機照片時間與GPS時間自動同步的方法皆係利用圖片文字辨識技術來予以達成。Therefore, as can be seen from the above, the method for automatically synchronizing the digital camera photo time with the GPS time according to the second and third embodiments of the present invention is achieved by using the picture character recognition technology.
圖2為顯示圖片文字辨識技術之實施的流程圖。2 is a flow chart showing the implementation of a picture character recognition technique.
在步驟201,將文件輸入。At step 201, the file is entered.
在步驟202,開始進行消除雜訊之操作。At step 202, the operation of eliminating noise is started.
在步驟203,開始進行字體修整之操作。At step 203, the operation of font trimming is started.
在步驟204,開始進行分割單字之操作。At step 204, the operation of splitting the word is started.
在步驟205,開始進行單字細線化之操作。At step 205, the operation of thinning the word is started.
在步驟206,開始進行萃取特徵點之操作。At step 206, the operation of extracting feature points is started.
在步驟207,開始進行比對之操作。At step 207, the operation of the comparison is started.
在步驟208,開始進行輸出辨識結果之操作。At step 208, an operation of outputting the identification result is started.
故由前述本發明之使數位相機照片時間與GPS時間自動同步的方法之實施例的詳細說明可知,本發明提供一種使數位相機照片時間與GPS時間自動同步的方法,可大幅簡化操作流程,並降低人為輸入的錯誤率,以達成更加準確的結果,確實為一兼具新穎性及進步性之設計,應可符合專利之申請要件,爰依法提出申請。Therefore, according to the detailed description of the foregoing embodiment of the method for automatically synchronizing the digital camera photo time with the GPS time, the present invention provides a method for automatically synchronizing the digital camera photo time with the GPS time, which greatly simplifies the operation flow, and Reducing the error rate of human input to achieve more accurate results, indeed a design that is both novel and progressive, should be able to meet the patent application requirements, and apply in accordance with the law.
為使 貴審查委員能夠進一步瞭解本發明之優點、特徵及其他目的,茲附以圖式詳細說明於下。In order to enable the reviewing committee to further understand the advantages, features and other objects of the present invention, the drawings are described in detail below.
(一)圖式部分:(1) Schema part:
圖1係顯示依據本發明第一實施例之使數位相機照片時間與GPS時間自動同步的方法之流程圖。1 is a flow chart showing a method of automatically synchronizing a digital camera photo time with a GPS time in accordance with a first embodiment of the present invention.
圖2係顯示圖片文字辨識技術之實施的流程圖。Figure 2 is a flow chart showing the implementation of the picture text recognition technique.
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