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tWf · ci〇c/〇〇9 A7 B7 經濟部中央榡準局貝工消費合作社印製 、發明說明（/) -- 本發明是有關於-_影像擷取裝置來感測目標物之 =與売度的方法，且特別是有關於一種影像擷取裝置利 多次閃光來感測目標物之距離與亮度的方法。 ρ使用照相機來拍攝〜目標物（可以是風景、人物或物 =咖希望所拍攝到的照片是淸晰可見的，所以在拍攝目 :時封於目標物的焦距與亮度要調整適當，才能拍到滿 麼、的照片。 隹隨著科技的進步’照相機由手動對焦進步到自動對 ^，由手動開啓閃光燈進步到自動感測開啓閃光燈，照相 $由裝設底片的傳統照相機進行到儲存數位影像資料的 ^位照相機，大大地提升人們使用照相機的方便性，也使 ^所拍攝的照片可以數位資料的方式儲存，透由電腦可做 各種不同變化的照片，以及更長久的資料保存。 以數位照相機爲例，如第1圖繪示習知數位照相機 t 口電路方塊圖所不，微電腦（Micro-computer)l〇2控制 笔荷耦合兀件影像器（CCD Imager) 1〇4來感測目標物所反 射的光強度，此時，電荷耦合元件影像器104將所感測之 度以電荷信號送出，此電荷信號經由類比轉換爲數 位、儲存、數位資料計算而送入微電腦102中，再經由微 胃腦102做影像處理便可得到一張完整照片的數位資料。 在第1圖中，微電腦102亦可控制閃光燈106，當微 電腦102發出一閃光指令時，則閃光燈106發出一閃光。 而此閃光燈106可以使用手動設定在拍照時發出閃光，也 可在拍照時自動感測而發出閃光。若數位照相機要具有自 本紙張尺度適用巾國齡縣（⑽綠（2似所公董） 83. 3.10,000 請 先 聞 注 意 事 項 再J m 頁 裝 訂 509815 8497twf.d〇c/〇〇9 A7 B7 經濟部中央標隼局員工消費合作社印裝 五、發明説明（>) 動閃光的功能，必須在第！圖中加裝一光感測器（ph〇t〇 Sensor)(未繪示），才能使數位照相機具有自動閃光的功 會b ^ 第2圖繪示習知數位照相機具有自動閃光的操作流 程圖。在第2圖中，數位照相機在進行目標物拍照時，首 先要按下攝影鍵（S202)，此時，光感測器會感測目標物所 反射的光強度（S204)，並送出對應於此光強度的感測信號 至微電腦102(參考第1圖），當光感測器感測目標物所反 射的光強度太弱時，則微電腦102發出閃光指令給閃光燈 1〇4(參考第1圖），使閃光燈1〇4發出閃光。微電腦ι〇2有 內建的閃光燈配合程式，當微電腦1〇2執行閃光燈配合程 式時’微電腦102接收光感測器所送出的感測信號，閃光 燈配合程式根據此感測信號可控制閃光燈對目標物所發出 的閃光強度。 然而’數位照相機使用光感測器來決定對目標物的 閃光強度’將會增加數位照相機的成本。而且，照相機在 對目標物做近距離的拍照時，若需要閃光燈發出閃光，將 因閃光之光度太強而使照片過度曝光。 因此本發明係提供一種利用多次閃光來感測目標物 之距離與亮度的方法，其利用原有之影像擷取裝置之架構 以及其閃光燈配合程式，可對不同距離的目標物給予適當 的光度，並可完成近距離的閃光，使照片不會過度的曝光。 本發明係提供一種利用多次閃光來感測目標物之距 離與亮度的方法，係用於一影像擷取裝置。此利用多次閃 請 先 閲 14 頁 訂 本紙張尺度適用中國國家標準（CNS ) A4規格（210 X 297公釐） 83. 3. !〇,〇〇〇 509815 經濟部中央標準局員工消費合作社印裝 8 4 97twf. doc/009 Λ ____B7 五、發明説明G ) 光來感測目標物之距離與亮度的方法首先，由影像擷取裝 置之一閃光燈發出一閃光來照射目標物；接著，接收目標 物所反射之一閃光回應値；然後，根據此閃光回應値來計 算對應於目標物之一距離値與一亮度値；其次，根據此距 離値與此亮度値來判斷閃光燈是否發出一適當閃光強度， 當閃光燈不是發出此適當閃光強度時，則再回到由影像擷 取裝置之閃光燈發出閃光來照射目標物之步驟。如此，可 強化閃光燈的功能與節省零組件，利用多次閃光的方式， 來達到測距與測光的效果。 爲讓本發明之上述目的、特徵、和優點能更明顯易 懂，下文特舉較佳實施例，並配合所附圖式，作詳細說明 如下： 圖式之簡單說明： 第1圖繪示習知數位照相機之部分電路方塊圖； 第2圖繪示習知數位照相機具有自動閃光的操作流 程圖；以及 第3圖繪示本發明利用影像擷取裝置之多次聞光來 感測目標物之距離與亮度的方法之流程圖。 標號說明： 102 :微電腦 104 :電荷耦合元件影像器 106 :閃光燈 108 :類比/數位轉換器 Π0 :動態隨機存取記憶體（RAM) 5 (請先聞讀背面之注意事項再填寫本頁) 馨 裝 訂 本紙張尺度適用中國國家標準（CNS ) A4規格（210Χ；297公釐） 83. 3. !0,〇〇〇 509815 84 97twf. doc/009 B7 經濟部中央標準局貝工消費合作社印製 五、發明説明（外） 112，118 :計算器 114 :加權電路 116 :積分器ΜΜΆ 本發明係提供一種利用多次閃光來感測目標物之距 離與亮度的方法，其利用原有之影像擷取裝置之架構，例 如照相機等等，以及其閃光燈配合程式，可對不同距離的 目標物給予適當的光度，並可完成近距離的閉光，使照片 不會過度的曝光。 上述之影像擷取裝置，在本實施例中以數位照相機 爲例，在利用第1圖之數位照相機的架構，以及數位照相 機具有之閃光燈配合程式，來完成對不同距離的目標物給 予適當的光度，並可完成近距離的閃光，而使照片不會過 度的曝光的方法，可參照第3圖，其繪示本發明利用多次 閃光來感測目標物之距離與亮度的方法之流程圖。 弟3圖之S兌明將參考第1圖之圖示，在第3圖中， 當按下數位照相機的攝影鍵時（S302)，微電腦1〇2會送閃 光指令給閃光燈106，此時，閃光燈1〇6對目標物會發出 閃光（S304)。接著，微電腦1〇2會控制電荷耦^元件^像 器1〇4，使電荷耦合元件影像器104接收由目標物所反射 的光強度，電荷耦合元件影像器104將此光強度以電荷信 5虎送至類比/數位轉換器108,再由類比/數位轉換器1〇8 將具有類比形式的電荷信號轉換爲具有數位形式的閃光回 應値之後，此閃光回應値送入RAM 11〇儲存起來。儲存 請 先 聞 讀 意 事 項tWf · ci〇c / 〇〇9 A7 B7 Printed by the Central Laboratories Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperatives, Invention Description (/)-This invention is about -_ image capture device to sense the target object = and The method for measuring the brightness, and in particular, relates to a method for sensing the distance and brightness of a target object by using an image capturing device for multiple flashes. ρ Use a camera to shoot ~ the target (can be a landscape, a person, or an object = I hope that the photos taken are clearly visible, so when shooting: the focus and brightness of the target should be adjusted properly before taking The photos are full. 隹 With the advancement of technology, the camera has progressed from manual focus to automatic alignment ^, from manual flash on to automatic sensing on. Flash photography has been performed from conventional cameras with negatives to storing digital images The ^ bit camera of data greatly enhances the convenience of people using the camera, and also allows the photos taken by ^ to be stored in the form of digital data, which can be used to make various photos with different changes through the computer, and longer-term data storage. Take the camera as an example. As shown in Figure 1, the conventional digital camera t-port circuit block diagram is shown. The Micro-computer 102 controls the CCD Imager 104 to sense the target. The intensity of the light reflected by the object. At this time, the charge-coupled element imager 104 sends the sensed degree as a charge signal, and the charge signal is converted by analogy. The digital, storage, and digital data calculations are sent to the microcomputer 102, and the digital data of the complete stomach is processed by the microgastric brain 102. In Figure 1, the microcomputer 102 can also control the flashlight 106, and when it is a microcomputer When a flash command is issued in 102, the flash 106 emits a flash. The flash 106 can use a manual setting to emit a flash when taking a picture, or it can automatically sense and emit a flash when taking a picture. If the digital camera has to be suitable for this paper size Jinguoling County (Tonglu (2 directors of the company) 83. 3.10,000 Please read the precautions first and then J m page binding 509815 8497twf.d〇c / 〇〇9 A7 B7 Employee Consumer Cooperatives, Central Bureau of Standards, Ministry of Economic Affairs Fifth, the description of the invention (>) The function of the dynamic flash must be added in the picture! Photo sensor (ph〇t〇Sensor) (not shown), so that the digital camera with automatic flash function Meeting b ^ Figure 2 shows the operation flowchart of a conventional digital camera with automatic flash. In Figure 2, when the digital camera takes a picture of a target, it must first press the photography key (S202). At this time, , The light sensor will sense the light intensity reflected by the target (S204), and send a sensing signal corresponding to this light intensity to the microcomputer 102 (refer to Figure 1), when the light sensor senses the target When the reflected light intensity is too weak, the microcomputer 102 sends a flashing instruction to the flashlight 104 (refer to FIG. 1) to make the flashlight 104 emit light. The microcomputer ι〇2 has a built-in flashlight matching program. 2 When the flash program is executed, 'the microcomputer 102 receives the sensing signal sent by the light sensor, and the flash program can control the intensity of the flash emitted by the flash on the target based on this sensing signal. However,' digital cameras use a light sensor Determining the flash intensity of the target will increase the cost of the digital camera. Moreover, when the camera takes close-up photos of the target, if the flash is required to fire, the photo will be overexposed because the flash is too strong. Therefore, the present invention provides a method for sensing the distance and brightness of a target object by using multiple flashes. The method utilizes the structure of an original image capture device and its flash program to give appropriate luminosity to targets at different distances. , And can complete the close-up flash, so that the photo will not be overexposed. The invention provides a method for sensing the distance and brightness of a target by using multiple flashes, which is used in an image capturing device. Please read the 14-page booklet for multiple uses of this paper. The paper size is applicable to Chinese National Standard (CNS) A4 (210 X 297 mm) 83. 3.! 〇, 〇〇〇509815 Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 8 8 97twf. Doc / 009 Λ ____B7 V. Description of the invention G) Method for sensing the distance and brightness of a target by light First, a flash from one of the image capturing devices emits a flash to illuminate the target; then, the target is received One flash response 値 reflected by the object; then, based on the flash response 値, calculate a distance 値 and a brightness 对应 corresponding to the target; secondly, determine whether the flash emits an appropriate flash intensity based on the distance 値 and brightness 値When the flash does not emit the appropriate flash intensity, it returns to the step of illuminating the target by the flash of the image capturing device. In this way, the function of the flash can be enhanced and components can be saved, and multiple flashes can be used to achieve the effects of ranging and metering. In order to make the above-mentioned objects, features, and advantages of the present invention more comprehensible, preferred embodiments are described below in detail with the accompanying drawings, as follows: Brief description of the drawings: FIG. 1 illustrates the exercises Partial circuit block diagram of the digital camera; Figure 2 shows the operation flowchart of the conventional digital camera with automatic flash; and Figure 3 shows the use of multiple light detection by the image capture device of the present invention to sense the target Flow chart of distance and brightness method. Explanation of symbols: 102: Microcomputer 104: Charge-coupled device imager 106: Flash 108: Analog / digital converter Π0: Dynamic random access memory (RAM) 5 (Please read the precautions on the back before filling this page) The size of the bound paper is applicable to the Chinese National Standard (CNS) A4 specification (210 ×; 297 mm) 83. 3.! 0, 〇〇〇509815 84 97twf. Doc / 009 B7 Printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Explanation of the invention (outside) 112, 118: calculator 114: weighting circuit 116: integrator MMΆ The present invention provides a method for sensing the distance and brightness of a target by using multiple flashes, which uses the original image capture The structure of the device, such as a camera, etc., and its flash program, can give appropriate brightness to targets at different distances, and can close light at a short distance, so that the photos will not be overexposed. In the above-mentioned image capturing device, a digital camera is taken as an example in this embodiment, and the digital camera architecture shown in FIG. 1 and the flash cooperation program provided by the digital camera are used to complete the appropriate lightness for objects at different distances. And, a method of flashing at a short distance, so that the photo will not be over-exposed, can be referred to FIG. 3, which illustrates a flowchart of a method for sensing the distance and brightness of a target by using multiple flashes of the present invention. In the third picture, S and Ming will refer to the picture in the first picture. In the third picture, when the shooting button of the digital camera is pressed (S302), the microcomputer 10 will send a flash command to the flash 106. At this time, The flash 106 emits a flash at the target (S304). Next, the microcomputer 102 controls the charge-coupled-element imager 104, so that the charge-coupled-element imager 104 receives the intensity of light reflected by the target, and the charge-coupled-element imager 104 uses this light intensity as a charge signal. The tiger sends it to the analog / digital converter 108, and then the analog / digital converter 108 converts the charge signal with the analog form into the flash response with the digital form. The flash response is sent to the RAM 11 and stored. Save and read first
頁 訂 本紙張尺度適用中國國家榡隼（CNS ) A4規格（21〇><297公釐） 83. 3. 10,000 509815 8497twf.doc/009 A7 B7 經濟部中央標準局員工消費合作社印製 五、發明説明（f ) 在RAM 110中的閃光回應値經由計算器（Calculator)112、 加權電路（Weighting Circuit)114、積分器（integrator)1〗6 與 計算器118等計算之後，將所得到的數位照相機與目標物 之間之一距離値以及對應於目標物之一亮度値送至微電腦 102中，微電腦102中的閃光燈配合程式根據此距離値與 亮度値來判斷閃光燈106所發出的閃光對目標物而言是否 爲適當的閃光強度（S306)。當閃光燈1〇6所發出的閃光不 是適當的閃光強度時，則再回到步驟S304，閃光燈106再 次發出的閃光，並由閃光燈配合程式控制閃光燈106所發 出的閃光強度，只要閃光燈106所發出的閃光不是適當的 閃光強度時，就會重複步驟S304與步驟S306，直到閃光 燈106所發出的閃光是適當的閃光強度，閃光燈配合程式 就控制閃光燈106不再發出閃光。 所以，利用多次閃光來感測目標物之距離與亮度的 方法’閃光燈配合程式根據目標物之不同的距離値可調整 閃光燈106發出最適當的閃光強度，也因此，數位照相機 可使用閃光在10cm的近距離來拍攝目標物，但不會使照 片產生過度曝光。 然而’本發明所提之方法是適用於任何型式的照相 機’亦包括數位照相機，故第丨圖之數位照相機的系統架 構7H爲了說明本發明所提之方法的其中一個實施例，而非 用以限定本發明所提之方法。 因此’本發明的優點係強化閃光燈的功能與節省零 組件，以降低照相機的安本。 7 (請先閲讀背面之注意事項再本頁) it 本紙張尺度適用中國國豕標準（CNS〉八4洗格（210χ297公慶） 83. 3. !0,〇〇〇 509815 8497twf.doc/009_^_ 五、發明説明（) 本發明的另一優點係調整閃光燈的閃光強度，可做 近距離的目標物拍攝。 本發明的再一優點係利用多次閃光燈來達到對目標 物測距與測光的效果。 綜上所述，雖然本發明已以較佳實施例揭露如上， 然其並非用以限定本發明，任何熟習此技藝者，在不脫離 本發明之精神和範圍內，當可作各種之更動與潤飾，因此 本發明之保護範圍當視後附之申請專利範圍所界定者爲 準。 經濟部中央標準局貝工消費合作社印製 8 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 83. 3. 10,000The page size of the paper is applicable to the Chinese National Cricket (CNS) A4 specification (21〇 < 297 mm) 83. 3. 10,000 509815 8497twf.doc / 009 A7 B7 2. Description of the invention (f) Flash response in RAM 110 値 After calculation by calculator 112, weighting circuit 114, integrator 1 and calculator 118, etc., A distance 値 between the digital camera and the target and a brightness corresponding to the target 値 are sent to the microcomputer 102. The flash program in the microcomputer 102 judges the flash emitted by the flash 106 to the target based on the distance 値 and brightness 値. Whether it is an appropriate flash intensity for an object (S306). When the flash emitted by the flash 106 is not an appropriate flash intensity, the process returns to step S304, and the flash emitted by the flash 106 is again controlled by the flash with the program to control the intensity of the flash emitted by the flash 106. When the flash is not the proper flash intensity, steps S304 and S306 will be repeated until the flash emitted by the flash 106 is an appropriate flash intensity, and the flash program will control the flash 106 to stop firing. Therefore, the method of using multiple flashes to sense the distance and brightness of the target object 'flash combination program can adjust the flash unit 106 to emit the most appropriate flash intensity according to the different distances of the target object. Therefore, digital cameras can use flashes at 10cm To shoot the subject at close range without overexposing the photo. However, 'the method proposed by the present invention is applicable to any type of camera' also includes digital cameras. Therefore, the system architecture of the digital camera 7H in the figure is to illustrate one embodiment of the method provided by the present invention, not to use it. The method of the present invention is limited. Therefore, the advantages of the present invention are to enhance the function of the flash and save components to reduce the camera's safety. 7 (Please read the precautions on the back first, then this page) it This paper size applies the Chinese national standard (CNS> 8 4 wash grid (210x297 public holiday) 83. 3.! 0, 〇〇〇509815 8497twf.doc / 009_ ^ _ 5. Description of the invention () Another advantage of the present invention is that the flash intensity of the flash can be adjusted to take a close-range target. Another advantage of the present invention is the use of multiple flashes to achieve distance measurement and metering of the target. In summary, although the present invention has been disclosed in the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make various changes without departing from the spirit and scope of the present invention. Changes and retouching, therefore, the scope of protection of the present invention shall be determined by the scope of the appended patent application. Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Shelley Consumer Cooperatives, 8 This paper size applies to Chinese National Standard (CNS) A4 specifications ( 210X297 mm) 83. 3. 10,000