200904157 九、發明說明： 【發明所屬之技術領域】 本發明涉及成像技術，尤其涉及一種具有變焦鏡頭之 成像設備及其鏡頭光線強度衰減補償系統及方法。 【先前技術】 隨著多媒體技術之飛速發展，數位相機、攝像機及帶 有攝像頭之手機越來越受到廣大消費者之青睞，且人們對 於4類设備之成像品質要求也越來越高，因此需要不斷提 高該類設備之成像品質。 、光學鏡頭係該類成像設備之重要部件，其對成像設備 之成像。口貝之好壞具有重要影響。而光線經過光學鏡頭之 後，會在該鏡頭之中,讀周緣產生不同程度之衰減，特別 h對於交焦鏡頭，其在各健段紐經過之後之衰減程度 :1不同因此，若對於變焦鏡頭採用同一補償公式對其 進行補償時，往往出規笨此隹jn· p s f& 卻反而惡化了之情:一到補償了 ’而某些焦段 【發明内容】 有鑒於此，有必要提供 W " 種可對變焦鏡頭之不同焦段 二有較好補償效果之成像設備及复@ % > 系統及方法。 H貞植強度减補償 一種成像設備，其包括—變焦 一旦 光線強度補償系統。所述變焦 有：·1測益及 塊、-判斷模塊及-補償模塊。所述存儲模^存== 200904157 所述複數；t段對應之複數補債 斷影像感挪器獲得之電子圖㈣ ^觸模塊用於判 之焦段。所述補償模塊用於㈣ 搜取時變焦鏡頭所處 段’用存儲模物儲之對應之塊所判斷之焦 訊號進行補償處理。 函數對所述電子圖像 種用於成像設針之光線 備包括一具有複數焦段之變隹鏡_補^統’該成像設 光線強度補償系統包括：―存 影像感測器。所述 償模塊。所述存儲模塊 2杈塊及一補 數補償函數。所述判_塊、段對應之複 子圖像訊號在獲取時變线感^獲5電 用於根據所述判斷模塊 、又以補乜杈塊 之對庫之補m射 焦用存儲模塊中存儲 應補j貝函數對所述電子圖像訊號進行補償處理。 設備包括一變時=先、、泉強度哀減補償方法，所述成像 數焦段，所述方=、一影像感測器，該變焦鏡頭具有複 焦段對應之複數補償函數，分別用於對 所之電子圖像訊號= 模塊中存儲之對庫及根據所判斷之焦段，用存儲 償處理。 、貝函數對所述電子圖像訊號進行補 下 所述成像設備對於其内之變焦鏡頭處於 影像感測器獲得之+工闽α % 口备p m丄 ‘、、、丰又r月况 又侍之电子圖像汎唬採用相對應之 200904157 數進行處理，以補償光線通過鏡頭後光線強度出現衰減對 成像之影響。從而可以對成像設備内之變焦鏡頭處於各個 焦段上所成之圖像都能做出適當之補償，從而可提高成像 設備之成像品質。 【實施方式】 下面將結合附圖，對本發明作進一步之詳細說明。 請參閱圖1，為本發明實施例提供之一種成像設備100 之功能模塊圖。所述成像設備100包括一變焦鏡頭10、一 影像感測器20及一光線強度補償系統30。該成像設備100 具體可為數位相機、數位攝像機、具有攝像頭之手機以及 掃描器等。 所述變焦鏡頭10之焦距可變，其整個變焦範圍可被分 為複數焦段，每個焦段表示一較小之變焦範圍。所述變焦 鏡頭10用於將被攝物體成像到影像感測器20上。 所述影像感測器20用於將來自被攝物體之光訊號轉 換為電子圖像訊號。所述影像感測器20設於變焦鏡頭10 1 之像侧，其可以係電荷耦合器件或互補式金屬氧化物半導 體。所述影像感測器20可採用陶瓷引線晶片載體封裝 (Ceramic Leaded Chip Carrier，CLCC)，塑膠引線晶片載體 封裝（Plastic Leaded Chip Carrier，PLCC)或晶片尺寸封裝 (Chip Scale Package，CSP)。 所述光線強度補償系統30與所述影像感測器20電連 接，用於對所述影像感測器20獲得之電子圖像訊號進行處 理，以補償被攝物體之光線在通過變焦鏡頭10時在變焦鏡 200904157 頭ίο之中心及周緣具有不同程度之衰減而造成之對所述 電子圖像訊號產生之影響。 請參閱圖2,為本發明實施例提供之光線強度補償系 統30之功能模塊圖。所述光線強度補償系統30包括一存 儲模塊31、一判斷模塊32及一補償模塊33。 所述存儲模塊31内存儲有與所述變焦鏡頭10之複數 焦段對應之複數補償函數，針對於變焦鏡頭10處於不同之 焦段可以採用不同之補償函數對影像感測器20獲得之電 子圖像訊號進行補償。本實施例中，所述複數補償函數之 確定方法為分別在變焦鏡頭10處於各個焦段時對一均勻 亮度光源獲取圖像，然後根據每個獲取之圖像分割成複數 區域，計算每個區域之平均亮度，最後得出光線在變焦鏡 頭10之中心及周緣之衰減程度，並由該衰減程度來確定對 於變焦鏡頭10處於每個焦段時之補償函數。所述補償函數 與變焦鏡頭10之焦段可為一一對應關係，也可為一對多之 關係。 所述判斷模塊32用於判斷影像感測器20獲得之電子 圖像訊號在獲取時變焦鏡頭10所處之焦段。 所述補償模塊33用於對影像感測器20獲得之電子圖 像訊號進行補償處理。具體地，所述補償模塊33會根據判 斷模塊32所判斷之該電子圖像訊號獲取時變焦鏡頭10處 於之焦段，從存儲模塊31中讀取所述焦段所對應之補償函 數，然後運用該補償函數對影像感測器20獲得之電子圖像 訊號進行補償處理。 9 200904157 =具：介紹所述成像設備1〇〇之鏡頭光線強度衰減 法償方法包括以下步驟，請參閱圖3。 步驟切··提供一存儲模塊31，其内存健有與所 數'，、、段對紅她浦函數"相 ^夂 複數焦段情況下影像感測器2〇獲得之處於 圖像，:::攄:處於各個焦段時對—均勻亮度光源獲取 :然後根據每個獲取之圖像分割成複數區域，計算 周均"’最後得出光線在變焦鏡頭1G之中心及 處於每《、段時之補償函數。 伙^、鏡碩10 步，驟S33:判斷影像感測器2〇獲得之 獲取時變焦鏡頭1 〇所處之焦段。 固像《在 步驟S35:根據所判斷之焦段，用存 之對應之補償函數對所述電子 ' 存儲 步驟呈體可㈣像喊進行補償處理。該 。貝取對應之補侦函數，缺德 函數對影像感測器20獲得之電=像取之補償 所述成像設備料心μ 謂處理。 數進;ΐ=Γ;;;Γ圖像訊號採用相對應之補償函 成像之影響。從而可以對 /又出現哀減對 焦段上所成之圖像都能做出適:^變焦鏡頭處於各個 設備之成像品質。 田自彳貝，從而可提高成像 200904157 综上所述，本發明符合發明專利要件，a 、 利申請。惟，以上所述者僅為本發明之較專 發明之範圍並不以上述實施方柄限，舉^|本4 = 之人士援依本發明之精制作之料修飾或變化， 蓋於以下申請專利範圍内。 白 【圖式簡單說明】 圖1係本發明實施例提供之—種成像設備之功能模塊圖。 圖2係圖i中之成像設備中之光線強度補償系統之功能模 塊圖。 衰減補償方法流程圖 【主要元件符號說明 成像設備 100 影像感測器 20 存儲模塊 31 補償模塊 33 圖3係本發明實施例提供之一種成像設備之鏡頭光線強户 變焦鏡頭 1〇 光線強度補償糸統3 0 判斷模塊 32 11BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to imaging technology, and more particularly to an imaging apparatus having a zoom lens and a lens light intensity attenuation compensation system and method thereof. [Prior Art] With the rapid development of multimedia technology, digital cameras, camcorders and mobile phones with cameras are increasingly favored by consumers, and people are increasingly demanding imaging quality for four types of devices. There is a need to continuously improve the imaging quality of such devices. An optical lens is an important component of such an imaging device that images an imaging device. The quality of the mouth has an important impact. After the light passes through the optical lens, the reading edge will have different degrees of attenuation in the lens. In particular, for the focal lens, the attenuation degree after each button is: 1 different. Therefore, if it is used for the zoom lens When the same compensation formula compensates for it, it is often stupid. jn· ps f& but it worsens the situation: one to compensate 'and some focal lengths [invention] In view of this, it is necessary to provide W " An imaging device and a complex @% > system and method that can better compensate for different focal lengths of the zoom lens. H implant intensity reduction compensation An imaging device that includes - zoom once the light intensity compensation system. The zoom has: • 1 measurement and block, - judgment module and - compensation module. The storage module stores == 200904157, the complex number; the t-segment corresponding to the complex image of the debt image obtained by the image sensor (4) ^The touch module is used to determine the focal length. The compensation module is used for (4) compensating the segment of the zoom lens where the zoom lens is located, and determining the focal signal determined by the corresponding block of the storage die. The function of the electronic image for imaging the light set includes a variable mirror having a plurality of focal lengths. The imaging light intensity compensation system comprises: a storage image sensor. The compensation module. The storage module 2 blocks and a complement compensation function. The complex sub-image signal corresponding to the judgment block and the segment is obtained by changing the line sense when acquired, and is used for the storage module of the complementing and focusing of the library according to the judgment module and the complement block. The storage complements the j shell function to compensate the electronic image signal. The device includes a variable time = first, spring intensity reduction compensation method, the imaging digital focal length, the square =, an image sensor, the zoom lens has a complex compensation function corresponding to the complex focal length, respectively The electronic image signal = the pair of banks stored in the module and the focal length determined according to the judgment, and is processed by the storage. The shell function complements the electronic image signal, and the imaging device is in the image sensor obtained by the zoom lens, and the workpiece is obtained by the image sensor, and the device is obtained by the image sensor. The electronic image is processed using a corresponding number of 200,904,157 to compensate for the effect of attenuation of light intensity on the image after the light passes through the lens. Therefore, it is possible to appropriately compensate the image formed by the zoom lens in the imaging device at each focal length, thereby improving the imaging quality of the imaging device. [Embodiment] Hereinafter, the present invention will be further described in detail with reference to the accompanying drawings. FIG. 1 is a functional block diagram of an imaging device 100 according to an embodiment of the present invention. The imaging device 100 includes a zoom lens 10, an image sensor 20, and a light intensity compensation system 30. The imaging device 100 may specifically be a digital camera, a digital camera, a mobile phone with a camera, a scanner, or the like. The zoom lens 10 has a variable focal length, and the entire zoom range can be divided into a plurality of focal lengths, each of which represents a smaller zoom range. The zoom lens 10 is used to image a subject onto the image sensor 20. The image sensor 20 is configured to convert an optical signal from a subject into an electronic image signal. The image sensor 20 is disposed on the image side of the zoom lens 10 1 and may be a charge coupled device or a complementary metal oxide semiconductor. The image sensor 20 may be a ceramic leaded chip carrier (CLCC), a plastic leaded chip carrier (PLCC) or a chip scale package (CSP). The light intensity compensation system 30 is electrically connected to the image sensor 20 for processing the electronic image signal obtained by the image sensor 20 to compensate the light of the object when passing through the zoom lens 10 . There is a different degree of attenuation at the center and periphery of the head ίο of the zoom lens 200904157 to cause an influence on the electronic image signal. Please refer to FIG. 2 , which is a functional block diagram of a light intensity compensation system 30 according to an embodiment of the present invention. The light intensity compensation system 30 includes a storage module 31, a determination module 32, and a compensation module 33. The memory module 31 stores a complex compensation function corresponding to the plurality of focal lengths of the zoom lens 10, and the electronic image signals obtained by the image sensor 20 can be used with different compensation functions for the zoom lens 10 at different focal lengths. Make compensation. In this embodiment, the method for determining the complex compensation function is to acquire an image of a uniform brightness light source when the zoom lens 10 is in each focal length, and then divide the image into a plurality of regions according to each acquired image to calculate each region. The average brightness is finally obtained by the degree of attenuation of the light at the center and the periphery of the zoom lens 10, and the degree of attenuation is used to determine the compensation function for the zoom lens 10 at each focal length. The compensation function may have a one-to-one correspondence with the focal length of the zoom lens 10, or may be a one-to-many relationship. The determining module 32 is configured to determine the focal length of the zoom lens 10 when the electronic image signal obtained by the image sensor 20 is acquired. The compensation module 33 is configured to perform compensation processing on the electronic image signal obtained by the image sensor 20. Specifically, the compensation module 33 reads the compensation function corresponding to the focal length from the storage module 31 according to the focal length of the zoom lens 10 when the electronic image signal is determined by the determining module 32, and then uses the compensation. The function compensates the electronic image signal obtained by the image sensor 20. 9 200904157 = With: Introduce the lens light intensity attenuation method of the imaging device 1 法 The method includes the following steps, please refer to Figure 3. Step Cut·· provides a storage module 31, whose memory is in the same image as the number ',,, and the pair of red and white functions>, and the image sensor 2 is obtained in the image, ::: :摅: At each focal length, the pair-uniform brightness source is obtained: then, according to each acquired image, the image is divided into multiple areas, and the weekly average is calculated. “The final light is obtained at the center of the zoom lens 1G and at each segment. Compensation function.伙^, 镜硕10 steps, step S33: Determine the focal length of the zoom lens 1 〇 when the image sensor 2 〇 is obtained. The solid image "in step S35: according to the determined focal length, the corresponding compensation function is used to compensate the electronic 'storage step." The. The compensating function corresponding to the fetching function is used to compensate the image sensor 20 for the electric image=image compensation. Digital input; ΐ = Γ;;; Γ image signal using the corresponding compensation function imaging effect. Therefore, it is possible to make appropriate and appropriate images for the image on the focus segment: ^The zoom lens is in the imaging quality of each device. Tian Zibei, which can improve imaging 200904157 In summary, the present invention meets the requirements of the invention patent, a, and the application. However, the above description is only for the scope of the invention of the present invention and is not limited by the above-mentioned implementation. The person who is in the 4th of this invention is modified or changed according to the fine material of the present invention, and is applied to the following application. Within the scope of the patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a functional block diagram of an image forming apparatus according to an embodiment of the present invention. Figure 2 is a functional block diagram of the light intensity compensation system in the image forming apparatus of Figure i. Attenuation Compensation Method Flowchart [Main Component Symbol Description Imaging Device 100 Image Sensor 20 Storage Module 31 Compensation Module 33 FIG. 3 is a lens light intensity zoom lens of an imaging device according to an embodiment of the present invention. 3 0 judgment module 32 11