201011451 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種影像擷取裝置及其閃光控制方法。 【先前技術】 目前’影像操取裝置如數位相機等常設有電子閃光 燈，以在光線不足之拍攝條件下補償被拍攝物之亮度。電 子閃光燈之控制方式包括自動式與手動式。自動式一般是 先通過自動測距模組或者閃光燈預閃之方式自動測得一= ❿標物與影像擷取裝置之間之距離，並根據影像擷取裝置之 光圈值，自動控制閃光燈之閃光強度。手動式是由拍攝者 自打設定閃光燈之閃光強度。但經驗不足之拍攝者常會錯 誤估計被拍攝物與影像擷取裝置之間之距離，以及對閃光 燈之閃光強度所對應之照亮範圍不夠瞭解，因此常易選擇 錯誤之閃光強度，造成曝光過度或者曝光不足。 【發明内容】201011451 IX. Description of the Invention: [Technical Field] The present invention relates to an image capturing device and a flash control method thereof. [Prior Art] At present, an image manipulation device such as a digital camera or the like is often provided with an electronic flash lamp to compensate the brightness of the subject under the condition of insufficient light. Electronic flash control methods include automatic and manual. The automatic type generally automatically measures the distance between the ❿ standard object and the image capturing device by means of the automatic distance measuring module or the flash pre-flashing method, and automatically controls the flash of the flash according to the aperture value of the image capturing device. strength. Manual mode is the flash intensity of the flash set by the photographer. However, an inexperienced photographer often misjudges the distance between the subject and the image capturing device, and does not know enough about the range of illumination corresponding to the flash intensity of the flash. Therefore, it is often easy to select the wrong flash intensity, resulting in overexposure or Underexposed. [Summary of the Invention]
#有鑒於此’有必要提供-種可顯示閃光燈照亮之景物 範圍之影像擷取裝置及其閃光控制方法。 -種影像鮮t置，其包括-成像模組、—閃光模組、 中央處賴組及—人機介自。所料像模㈣於感測外 =之場景，形絲像信號，並將影像㈣輸送韻述中央 理，組。所述閃光模組用於在拍攝時閃光以補償被拍攝 =儿度。所述巾央處理模組用於處理來自所述成像模組 ^影像信號，並將處理後之影像信號輸出到所述人機介 ’以及在所述人機介面上顯示至少兩個預設閃光距離供 201011451 •拍攝者選擇，並當拍攝者選擇其中一預設閃光距離 •該人機介面上顯示在該預設閃光距離之條件下所述閃光模 •組所能照亮之景物範圍。該中央處理模組根據拍攝者' 之預設閃光距離控制所述閃光模組在拍攝時閃光。 一種應用於影像擷取裝置之閃光控制方法，所述影 揭取裝置包括-閃光模組，該閃錢制方法包括以下步驟： 感測一場景，得到並預覽所述場景之影像； 提供至少兩個預設閃光距離供拍攝者選擇； 根據拍攝者選擇之預設閃光距離，顯示可被所述閃光 模組照亮之景物範圍； 根據拍攝者選擇之預設閃光距冑，控制所述閃光模組 進行閃光，並拍攝該場景。 相較於先前技術，所述影像擷取裝置及其閃光控制方 法可讓拍攝者自行選擇閃光模組之閃光距離，並顯示該閃 光距離條件下能被所述閃光模組照亮之景物範圍，使拍攝 者容易選擇合適之閃光距離，以獲得較好之曝光效果。 【實施方式】 下面將結合附圖，舉以下較佳實施方式並配合圖式詳 細描述如下。 請參閱圖1與圖2,其為本發明之影像擷取裝置J。該 衫像摘取裝置1包括一成像模组10、一閃光模組2〇、一自 動測距模組30、一中央處理模組4〇、一人機介面5〇及一 存儲模組60。 所述成像模組10用於感測外部場景，形成影像信號， 並將影像信號輸送到所述中央處理模組4〇。該成像模組1〇 201011451 . 可以係鏡頭及影像感測器。 ‘ 一所述閃光模組20用於在拍攝時閃光以補償被拍攝物 之凴度。所述閃光模組20具有一最大閃光距離，該最大閃 光距離由該閃光模組20之本身性能決定。所述閃光模組 20可以係閃光燈系統。 ^# In view of this, it is necessary to provide an image capturing device that can display the range of the scene illuminated by the flash and its flash control method. - The image is fresh, including - imaging module, - flash module, central group and human machine. The image model (4) is used to sense the scene outside the scene, the shape of the wire is like a signal, and the image (4) is conveyed to the rhyme. The flash module is used to flash when shooting to compensate for being photographed. The towel processing module is configured to process image signals from the imaging module and output the processed image signals to the human machine interface and display at least two preset flashes on the human machine interface The distance is for 201011451 • The photographer selects, and when the photographer selects one of the preset flash distances • The human-machine interface displays the range of the scene that the flash mode group can illuminate under the preset flash distance. The central processing module controls the flash module to flash when shooting according to the preset flash distance of the photographer. A flash control method applied to an image capture device, the image removal device comprising a flash module, the flash money method comprising the steps of: sensing a scene, obtaining and previewing an image of the scene; providing at least two The preset flash distance is selected by the photographer; according to the preset flash distance selected by the photographer, the range of the scene that can be illuminated by the flash module is displayed; and the flash mode is controlled according to the preset flash distance selected by the photographer The group flashes and shoots the scene. Compared with the prior art, the image capturing device and the flash control method thereof allow the photographer to select the flash distance of the flash module and display the range of the scene that can be illuminated by the flash module under the flash distance. It is easy for the photographer to select a suitable flash distance for better exposure. [Embodiment] Hereinafter, the following preferred embodiments will be described in detail with reference to the accompanying drawings. Please refer to FIG. 1 and FIG. 2, which are image capturing devices J of the present invention. The squeezing device 1 includes an imaging module 10, a flash module 2, an automatic ranging module 30, a central processing module 4, a human interface 5A, and a storage module 60. The imaging module 10 is configured to sense an external scene, form an image signal, and transmit the image signal to the central processing module 4〇. The imaging module 1〇 201011451 . can be a lens and an image sensor. ‘One of the flash modules 20 is used to flash at the time of shooting to compensate for the brightness of the subject. The flash module 20 has a maximum flash distance determined by the performance of the flash module 20. The flash module 20 can be a flash system. ^
所述自動測距模組30用於獲得所述成像模組1〇感測 之影像中之景物與所述影像擷取裝置i之間之距離，並將 結果提供給所述中央處理模組4〇。優選地，該自動測距模 組30先在所述場景申選擇至少兩個參照物並測得該至少 兩個參照物與所述影像擷取裝置i之間之距離，然後根據 該至少兩個參照物在所述影像中之位置，確定所述場景與 影像之投影關係，再根據該影像中其它景物與該至少兩個 2物之間之位置關係以及所述場景與影像之投影關係， 计算仔到該影像中其它景物與該影像擷取裝置丨之 離。所述自動測距模組3〇為内置之測距器。 所，中央處理模組40包括—影像處理單元仏及 制早兀44。 所述影像處理單元42用於處理來自所述成像模 =像=二將I處理後之影像嶋 6〇中，冋時輸出到所述人機介面5〇。 所述控制單元44用於在所述人機介面5G上顯示至+ :個預設閃光距離以供拍攝者選擇，並當拍攝者選擇^ 離時，該控制單元44根據該預設閃光距離 ，之所迷閃光模組2G之照亮 與所述影侧衫41⑶之_，㈣域 9 201011451 •示在該預設閃光距離之條件下該閃光模組2〇所能照亮之 景物範圍，以提示拍攝者其所關注之目標物能否被該閃光 模組2〇照亮。所述供選擇之預設閃光距離可以為從〇到該 閃光模組20之最大閃光距離中之任意數值，且各預設閃光 距離所對應之所述閃光模組2 〇之照亮範圍預先設定。 該控制單元44可根據所述自動測距模組3〇提供之影 像中之景物與所述影像擷取裝置i之間之距離，以及拍攝 者選擇之預設閃光距離所對應之所述閃光模組2〇之照亮 ❹範圍，找出位於該照亮範圍内之景物，並改變該照亮範圍 内之景物在所述人機介面50上對應之畫素點之亮度，以顯 示所述閃光模組20所能照亮之景物範圍。優選地，該控制 單元44通過增加該照亮範圍内之景物在所述人機介面％ 上對應之畫素點之亮度，以在該人機介面5〇上形成一增亮 區域^用於表示所述閃光模組20所能照亮之景物範圍。該 控制單元44亦可增加位於照亮範圍邊緣之景物在該人機 介面50上對應之畫素點之亮度，形成一條包圍照亮範圍内 •之景物之輔助線，用以向拍攝者提示可被該閃光模組2〇 照亮之景物範圍。 當拍攝者進行拍攝時，該控制單元44根據拍攝者所選 之預設閃光距離控制所述閃光模組2〇進行閃光。其中，當 選擇之預設閃光距離為0時，該閃光模組2〇不閃光。所述 中央處理單元40包括數位訊號處理器、自動增益控制器、 模數轉換器等。 所述人機介面50用於將來自該中央處理模組4〇之信 號轉化為拍攝者可視之影像，並根據拍攝者之操作將拍攝 201011451 者選擇之預設閃光距離輸入到所述中央處理模会 人機介面50可以係顯示器及按鍵或者觸摸式二：所述 所述存儲模組60用於存儲來自該中央處理=不器。 衫像“號。所述存儲模組6〇可以係記憶體。、、、、40之 請參閱圖3，其為應用於上述影像掏取裝 控制方法。該閃光控制方法包括以下步驟： 之閃光 5100 :感測一場景，得到並預覽所述場景之 參 ，步驟中’料成像额1G感賴場景並得卵’像缺 在所述人機介面50上預覽該影像。 …、 5101 :獲得該影像中之景物與該影像擷取裝置 之距離。在該步驟中，所述自動測距模組3〇先在 二 2擇至少兩個參照物’並測得該至少兩個參照二 1之間之距離，然後根據該至少兩個參照物 2述衫像中之位置，確㈣述場景與影像之投影關係， 再根據該影像中其它景物與該至少兩個參照物之間之位置 ，係以及所述場景與影像之投影關係，計算得到該影像中 其它景物與該影像擷取裝置1之間之距離。 S102:提供至少兩個預設閃光距離供拍攝者選擇。在 該步驟中，所述控制單元44在所述人機介面50上顯示至 少兩個預設閃光距離。 、、S103 .根據拍攝者選擇之預設閃光距離，顯示可被所 述閃光模組20照壳之景物範圍。在該步驟中，根據所述影 像中之景物與所述景々像擷取裝置丄之間之距離，以及拍攝 ^選擇之預設閃光距離所對應之所述閃光模組2〇之照亮 範圍，找出位於該照亮範圍内之景物，並顯示可被該閃光 11 201011451 不 b S104 ··判斷是否採用該預設閃光距離進行閃光，若 疋，則進打步驟S105 ,若否，則進行步驟S102。在該+ 驟中’所述控制單元44根據拍攝者在所述人機介面％ 之操作進行判斷。 S105 :根據拍攝者選擇之預設閃光距離，控制所述 ©光模=0進行閃*，並拍攝該場景。在該步财，由所述 控制單元44控制所述閃光模組20。 、相較於先前技術，所述影像擷取裝置及其閃光控制方 法可讓拍攝者自行選擇閃光模組之閃光距離，並顯示該閃 光，離條件下能被所述閃光模組照亮之景物範圍，使^攝 者容易選擇合適之閃光距離，以獲得較好之曝光效果。 綜上所述，本發明符合發明專利要件，爰依法提出專 利申請。惟，以上所述者僅為本發明之較佳實施方式，本 ❿發明之範圍並不以上述實施方式為限，舉凡熟悉本案技藝 之人士援依本發明之精神所作之等效修飾或變化，皆應涵 蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1為本發明之影像擷取裝置之功能模組圖。 圖2為圖1中之影像擷取裝置之工作狀態示意圖。 圖3為應用圖1中之影像擷取裝置之閃光控制方法之 流程圖。 【主要元件符號說明】 12 201011451 影像擷取裝置 1 成像模組 10 閃光模組 20 自動測距模組 30 中央處理模組 40 影像處理單元 42 控制單元 44 人機介面 50 存儲模組 60 13The automatic ranging module 30 is configured to obtain a distance between the scene in the image sensed by the imaging module 1 and the image capturing device i, and provide the result to the central processing module 4 Hey. Preferably, the automatic ranging module 30 first selects at least two reference objects in the scene and measures a distance between the at least two reference objects and the image capturing device i, and then according to the at least two Determining a projection relationship between the scene and the image in the image, and calculating a positional relationship between the other scenes and the at least two objects in the image and a projection relationship between the scene and the image The other scenes in the image are separated from the image capturing device. The automatic ranging module 3 is a built-in range finder. The central processing module 40 includes an image processing unit and an early detection unit 44. The image processing unit 42 is configured to process the image from the imaging mode = image=2 to I, and output to the human interface 5〇. The control unit 44 is configured to display on the human-machine interface 5G to +: a preset flash distance for the photographer to select, and when the photographer selects the separation, the control unit 44 according to the preset flash distance, Illuminating the flash module 2G and the side of the shadow side shirt 41 (3), (4) field 9 201011451 • showing the range of the scene that the flash module 2 can illuminate under the preset flash distance The photographer is prompted whether the target object of interest can be illuminated by the flash module 2〇. The optional preset flash distance may be any value from the maximum flash distance of the flash module 20, and the illumination range of the flash module 2 corresponding to each preset flash distance is preset. . The control unit 44 may be configured according to the distance between the scene in the image provided by the automatic ranging module 3 and the image capturing device i, and the flash mode corresponding to the preset flash distance selected by the photographer. The group 2 illuminates the illuminating range, finds the scene located in the illuminating range, and changes the brightness of the corresponding pixel point of the scene in the illuminating range on the human interface 50 to display the flash The range of scenes that the module 20 can illuminate. Preferably, the control unit 44 forms a brightening area on the human interface 5 by using the brightness of the corresponding pixel point of the scene in the illumination range on the human interface interface. The range of the scene that the flash module 20 can illuminate. The control unit 44 can also increase the brightness of the corresponding pixel point of the scene located on the edge of the illumination range on the human interface 50 to form an auxiliary line surrounding the scene in the illumination range for prompting the photographer. The range of scenery illuminated by the flash module 2〇. When the photographer performs shooting, the control unit 44 controls the flash module 2 to perform flashing according to the preset flash distance selected by the photographer. Wherein, when the preset preset flash distance is 0, the flash module 2 does not flash. The central processing unit 40 includes a digital signal processor, an automatic gain controller, an analog to digital converter, and the like. The human interface 50 is configured to convert the signal from the central processing module 4 into an image visible by the photographer, and input the preset flash distance selected by the photographer to the central processing mode according to the operation of the photographer. The human interface 50 can be a display and a button or touch type 2: the storage module 60 is used to store the central processing unit. The flashing control method is applied to the above-mentioned image capturing and controlling method. The flashing control method includes the following steps: 5100: Sensing a scene, obtaining and previewing the parameter of the scene, in the step, “the image imaging amount 1G is affected by the scene and the egg is obtained”, and the image is previewed on the human machine interface 50. ..., 5101: obtaining the image The distance between the scene in the image and the image capturing device. In this step, the automatic ranging module 3 first selects at least two reference objects '2' and measures between the at least two reference twos The distance, and then according to the position of the at least two reference objects 2, the relationship between the scene and the image is determined (4), and then according to the position between the other scenes and the at least two reference objects in the image, a relationship between the scene and the image, and calculating a distance between the other scenes in the image and the image capturing device 1. S102: providing at least two preset flash distances for the photographer to select. In the step, the Control unit 44 is in the At least two preset flash distances are displayed on the machine interface 50. S, S103. According to the preset flash distance selected by the photographer, the range of the scene that can be photographed by the flash module 20 is displayed. In this step, according to the The distance between the scene in the image and the scene capturing device ,, and the illumination range of the flash module 2 对应 corresponding to the preset flash distance selected by the shooting, to find the illuminating range The inside scene, and the display can be flashed by the flash 11 201011451 not b S104 · · whether to use the preset flash distance to flash, if 疋, then proceed to step S105, and if not, proceed to step S102. In the + step The control unit 44 determines based on the photographer's operation at the human interface %. S105: Control the © optical mode=0 to flash* according to the preset flash distance selected by the photographer, and shoot the scene. In the step, the flash module 20 is controlled by the control unit 44. Compared with the prior art, the image capturing device and the flash control method thereof allow the photographer to select the flash distance of the flash module. And show this Flash, the range of scenes that can be illuminated by the flash module under conditions, so that the photographer can easily select a suitable flash distance to obtain a better exposure effect. In summary, the present invention meets the requirements of the invention patent, The patent application is filed according to the law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those skilled in the art can make the spirit of the present invention. The following is a description of the functional module of the image capturing device of the present invention. Figure 2 is a view of the function of the image capturing device of Figure 1. FIG. 3 is a flow chart of a flash control method for applying the image capturing device of FIG. 1. [Main component symbol description] 12 201011451 Image capture device 1 Imaging module 10 Flash module 20 Automatic distance measurement module 30 Central processing module 40 Image processing unit 42 Control unit 44 Human interface 50 Storage module 60 13