TW202141442A - Embedded vehicle license plate recognition and screening system and control method thereof including a housing unit, an image capturing unit arranged in the housing, a transmitting unit, a processing unit - Google Patents
Embedded vehicle license plate recognition and screening system and control method thereof including a housing unit, an image capturing unit arranged in the housing, a transmitting unit, a processing unit Download PDFInfo
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本發明是有關於一種車牌辨識系統,特別是指一種埋入式車牌辨識篩選系統及其控制方法。The invention relates to a vehicle license plate recognition system, in particular to an embedded vehicle license plate recognition and screening system and its control method.
近年來,科技發展迅速,利用感測器偵測車輛並拍照記錄,逐漸取代以往採用人力拍照,記錄停車時間的方式。In recent years, technology has developed rapidly. The use of sensors to detect vehicles and take photos and records has gradually replaced the previous manual method of taking photos and recording parking time.
參閱圖1,專利公告案號TW I626624B一案揭示,一種現有的車牌辨識系統,包含一第一計時柱11及一第二計時柱12,該第一計時柱11設置於一第一停車格110之長邊側,而該第二計時柱12設置於一第二停車格120之長邊側,且該第二停車格120位於該第一停車格110前方。Referring to Figure 1, the case of Patent Publication No. TW I626624B discloses that an existing license plate recognition system includes a
該第一計時柱11包含一偵測該第二停車格120的第一前車格感測器111,及一拍攝該第一停車格10的第一攝像單元112。同樣的,該第二計時柱12包含一用於偵測前方的停車格的第二前車格感測器121,及一拍攝該第二停車格120的第二攝像單元122。當該第一計時柱11內的該第一前車格感測器111感測到該第二停車格120有移動物進入時,該第二計時柱12的該第二攝像單元122便會開啟並拍攝位於該第二停車格120的車輛,用以起算位於該第二停車格120內的車輛的停車費。The
然而,依照該現有的車牌辨識系統,每一計時柱內需包含一前車格感測器及一攝影機,當欲監控的該等停車格的數量增加時,構建該車牌辨識系統的成本也會隨之上升,且由於該等計時柱設置於該等停車格旁,也會佔用到部份道路的空間,間接造成行人或駕駛視線受到遮蔽。However, according to the existing license plate recognition system, each timing column needs to include a front car compartment sensor and a camera. When the number of parking compartments to be monitored increases, the cost of building the license plate recognition system will also vary. As the timing columns are installed beside the parking grids, they will also occupy part of the road space, indirectly causing pedestrians or driving sight to be blocked.
因此,本發明的目的,即在提供一種埋入式車牌辨識篩選系統及其控制方法。Therefore, the purpose of the present invention is to provide an embedded license plate recognition and screening system and its control method.
於是,本發明埋入式車牌辨識篩選系統,適用一外部設備,該埋入式車牌辨識篩選系統包含一用於設置並埋入於地面的殼體單元、一設置於該殼體單元內且用於朝斜上方拍攝一實時影像的攝像單元、一用於接收一車牌憑證相片並將該車牌憑證相片發送至該外部設備的發送單元,及一電連接該攝像單元並以串流方式接收該實時影像的處理單元。Therefore, the embedded license plate recognition and screening system of the present invention is applicable to an external device. The embedded license plate recognition and screening system includes a housing unit for installation and embedded in the ground, and a housing unit installed in the housing unit and used for A camera unit that shoots a real-time image diagonally upward, a sending unit for receiving a license plate voucher photo and sending the license plate voucher photo to the external device, and a sending unit that is electrically connected to the camera unit and receives the real-time image in a streaming manner Image processing unit.
該處理單元包括一控制模組,該控制模組擷取該實時影像的畫面為一臨時憑證相片,且根據該臨時憑證相片中的車牌輪廓篩選並擷取出車牌部份,再將車牌部份的相片另存為該車牌憑證相片,並傳輸至該發送單元。The processing unit includes a control module. The control module captures the real-time image as a temporary voucher photo, and screens and extracts the license plate part according to the license plate outline in the temporary voucher photo, and then extracts the license plate part The photo is saved as the license plate voucher photo and transmitted to the sending unit.
於是,本發明埋入式車牌辨識篩選系統的控制方法,適用一外部設備,該埋入式車牌辨識篩選系統包含一攝像單元、一電連接該攝像單元的處理單元,及一電連接該處理單元的發送單元,該控制方法包含下列步驟:Therefore, the control method of the embedded license plate recognition and screening system of the present invention is applicable to an external device. The embedded license plate recognition and screening system includes a camera unit, a processing unit electrically connected to the camera unit, and a processing unit electrically connected to the processing unit The control method includes the following steps:
啟動該攝像單元,拍攝一實時影像並以串流方式傳輸至該處理單元;該處理單元內的一控制模組擷取該實時影像的畫面為一臨時憑證相片;該控制模組根據該臨時憑證相片中的車牌輪廓篩選並擷取出車牌部份,再將車牌部份的相片另存為一車牌憑證相片,並傳輸至該發送單元;該發送單元接收該車牌憑證相片,將該車牌憑證相片發送至該外部設備。Start the camera unit, shoot a real-time image and stream it to the processing unit; a control module in the processing unit captures the real-time image as a temporary voucher photo; the control module according to the temporary voucher The license plate outline in the photo is filtered and the license plate part is extracted, and then the photo of the license plate part is saved as a license plate voucher photo and transmitted to the sending unit; the sending unit receives the license plate voucher photo and sends the license plate voucher photo to The external device.
本發明埋入式車牌辨識篩選系統及其控制方法的功效在於:透過整合該殼體單元、該攝像單元、該處理單元及該發送單元成一埋入於地面的車牌辨識篩選系統,且擷取、篩選出車牌部份的照片作為該車牌憑證相片,並僅將該車牌憑證相片透過該發送單元傳輸至外部設備,防止車牌部份以外的照片外流,使本發明達到縮減體積兼具保護他人隱私不受侵害的效果。The effect of the embedded license plate recognition and screening system and its control method of the present invention is: by integrating the housing unit, the camera unit, the processing unit, and the sending unit into a license plate recognition and screening system buried in the ground, and capture, The photo of the license plate part is selected as the license plate voucher photo, and only the license plate voucher photo is transmitted to the external device through the sending unit to prevent the outflow of photos other than the license plate part, so that the present invention can reduce the size and protect the privacy of others. The effect of the infringement.
參閱圖2及圖3,本發明埋入式車牌辨識篩選系統2的一實施例,包含一設置並埋入於地面的殼體單元3、一設置於該殼體單元3內的攝像單元4、一電連接該攝像單元4的感測單元41、一發送單元5,及一處理單元6,該處理單元6包括一暫存器61及一控制模組62。2 and 3, an embodiment of the embedded license plate recognition and
本實施例中,該攝像單元4為一攝影機,且朝斜上方面向一對應的停車格92,該攝像單元4用於拍攝一實時影像。In this embodiment, the
本實施例中,該感測單元41為該處理單元6內的該控制模組62於該實時影像內設置一電子圍籬進行動態偵測,依此判斷是否有物體進入該停車格92。In this embodiment, the
本實施例中,該發送單元5為一無線通訊晶片組,該無線通訊晶片組接收一由該處理單元6所傳輸的車牌憑證相片,並將該車牌憑證相片以無線網路發送至該外部設備91。In this embodiment, the sending
本實施例中,該處理單元6為一微處理器,該微處理器包括電連接該攝像單元4的該暫存器61及該控制模組62。該暫存器61以串流方式接收該攝像單元4所拍攝的該實時影像。In this embodiment, the processing unit 6 is a microprocessor, and the microprocessor includes the
本實施例中,該外部設備91為街區伺服器,可同時匹配多組本發明埋入式車牌辨識篩選系統2,並根據每一系統所傳輸的該車牌憑證相片與該時間參數儲存至該街區伺服器內對應的一電子管理表單內,依此計算停車費。In this embodiment, the
參閱圖4及圖5,本發明埋入式車牌辨識篩選系統2的該實施例可由一控制方法實現,該控制方法包含步驟701~步驟708:4 and 5, this embodiment of the embedded license plate recognition and
於步驟701中,啟動該攝像單元4,拍攝該實時影像並以串流方式傳輸至該暫存器61,該暫存器61便將該實時影像傳輸至該控制模組62,接續步驟702。In step 701, the
於步驟702中,該控制模組62根據該暫存器61內的該實時影像連貫與否,進而偵測該實時影像的畫面,並判斷該實時影像內的一對應該電子圍籬的特定區域621的畫面是否有物體移動,該特定區域621即為該控制模組62需要偵測移動的物體的範圍,以降低偵測物體移動所需的運算量。若該控制模組62偵測到該特定區域621的畫面內有物體移動,接續步驟703,若該控制模組62未於該特定區域621的畫面偵測到物體移動,重新執行步驟702。In
於步驟703中,該控制模組62根據預設的間隔時間,擷取數次該實時影像的畫面,並從數次擷取的該實時影像的畫面中,比對並挑選出一較為清晰者,另存為一臨時憑證相片,該控制模組62也將存取該臨時憑證相片的當下的時間,另存為一時間參數,並接續步驟704。In
於步驟704中,該控制模組62根據普遍車牌使用的英文字型、數字字型,及排列間距,比對並判斷該臨時憑證相片是否含有車牌號碼,若該控制模組62從該臨時憑證相片中讀取出車牌號碼,便接續步驟705。若該控制模組62未能辨識出該特定區域621的畫面含有車牌號碼,如發生因動物或行人移動導致該控制模組62於該步驟703中偵測到物體移動的情況,或該控制模組62因車牌號碼不夠清晰而無法從該臨時憑證相片中讀取出車牌號碼,便接續步驟708。In
於步驟705中,該控制模組62根據普遍車牌的輪廓及排列間距,篩選並擷取出該臨時憑證相片中的車牌部份並存為該車牌憑證相片,且該車牌憑證相片及該時間參數傳輸至該發送單元5,接續步驟706。In
於步驟706中,該控制模組62刪除該臨時憑證相片,確保該臨時憑證相片不會留存,並接續步驟707。In
於步驟707中,該發送單元5接收該車牌憑證相片及該時間參數,並將該車牌憑證相片及該時間參數發送至該外部設備91,供該外部設備91接收並計算出該車牌憑證相片中的車牌進場的時間。In
於步驟708中,由於該控制模組62無法從該臨時憑證相片中讀取出車牌號碼,該控制模組62便刪除該臨時憑證相片,並傳輸一車牌異常訊號及該時間參數至該發送單元5,該發送單元5也連帶傳輸該車牌異常訊號及該時間參數至外部設備91,並回復至步驟702。該外部設備91得以根據該車牌異常訊號及該時間參數取得車牌號碼辨識失敗的相關資訊並進行後續處理。In
綜上所述,本發明埋入式車牌辨識篩選系統2及其控制方法透過整合該殼體單元3、該攝像單元4、該處理單元6及該發送單元5,且將該攝像單元4所拍攝的該實時影像以串流方式傳輸至該暫存器61,使該處理單元6得以藉由該控制模組62判斷偵測該實時影像的畫面中是否有物體移動,並擷取該實時影像的畫面另存為該臨時憑證相片,再根據車牌輪廓篩選並擷取出車牌部份的相片另存為該車牌憑證相片,最後,該控制模組62僅將該車牌憑證相片透過該發送單元5傳輸至外部設備91,防止埋入於地面的該攝像單元4所拍攝到的涉及他人隱私的照片外流,本發明埋入式車牌辨識篩選系統2及其控制方法透過集成該殼體單元3、該攝像單元4、該處理單元6及該發送單元5以縮減體積並保護他人隱私相片不受外流,故確實能達成本發明的目的。To sum up, the embedded license plate recognition and
惟以上所述者,僅為本發明的實施例而已,當不能以此限定本發明實施的範圍,凡是依本發明申請專利範圍及專利說明書內容所作的簡單的等效變化與修飾,皆仍屬本發明專利涵蓋的範圍內。However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to Within the scope covered by the patent of the present invention.
11:第一計時柱 110:第一停車格 111:第一前車格感測器 112:第一攝像單元 12:第二計時柱 120:第二停車格 121:第二前車格感測器 122:第二攝像單元 2:埋入式車牌辨識篩選系統 3:殼體單元 4:攝像單元 41:感測單元 5:發送單元 6:處理單元 61:暫存器 62:控制模組 621:特定區域 701~708:步驟 91:外部設備 92:停車格11: The first timing bar 110: The first parking space 111: The first front car compartment sensor 112: The first camera unit 12: The second timing bar 120: Second parking compartment 121: The second front car compartment sensor 122: second camera unit 2: Embedded license plate recognition and screening system 3: Housing unit 4: camera unit 41: Sensing unit 5: Sending unit 6: Processing unit 61: register 62: control module 621: specific area 701~708: steps 91: external equipment 92: parking compartment
本發明的其他的特徵及功效,將於參照圖式的實施方式中清楚地呈現,其中: 圖1是一種現有的車牌辨識系統的一示意圖; 圖2是本發明埋入式車牌辨識篩選系統的一實施例的一系統方塊圖; 圖3是該實施例的一示意圖; 圖4是該實施例中,該實時攝影的畫面的一示意圖;及 圖5是該實施例的控制方法的一流程圖。Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a schematic diagram of an existing license plate recognition system; 2 is a system block diagram of an embodiment of the embedded license plate recognition and screening system of the present invention; Figure 3 is a schematic diagram of this embodiment; FIG. 4 is a schematic diagram of the real-time shooting screen in the embodiment; and Fig. 5 is a flow chart of the control method of this embodiment.
4:攝像單元4: camera unit
41:感測單元41: Sensing unit
5:發送單元5: Sending unit
6:處理單元6: Processing unit
61:暫存器61: register
62:控制模組62: control module
91:外部設備91: external equipment
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