1335176 [0001] 099年10月15日接正替換頁發明說明： . 【發明所屬之技術領域】 ’ 本發明關於調整攝取影像品質之調整裝置，尤其係關於 一種調整攝像裝置感光度之感光度調整裝置及調整方法 [0002] [0003] [0004] 【先前技術】 隨著科技之不斷發展，攜帶式電子裝置如移動電話，應 用曰益廣泛，同時也日漸趨向於輕巧、美觀及多功能化 ，其中照相功能係近年流行之移動電話之附加功能。應 用於移動電話之數位相機模組不僅要滿足輕薄短小之要 求，其還須具有較高之照相性能'。感:光度之選取範圍係 影響相機模組之照相品質之重要參敖之一，因此，對感 光度之調整有利於所獲取影像亮度及照相品質之提高。 感光度（Sensitivity)係指根據光源之不同強度相機 之感光能力。在數位相機中，感光度之調整係通過調整 v -. 由影像感測器所獲取之像素值來完成之。當放大該影像 感測器所獲取之像素值，則提高了感光度，相反，則為 降低了感光度。 通常感光度之調整係通過調整控制影像感測器本身之放 大器以將其所採集來之訊號進行放大或縮小，從而調整 影像感測器之感光度以及所獲取影像之亮度。但是上述 方法會受限於放大器本身之設計，而且對其所採集之訊 號進行放大之過程中，訊號中會摻雜入噪音，而降低了 影像之品質。 【發明内容】1335176 [0001] On October 15, 099, the replacement page is invented: [Technical Field of the Invention] The present invention relates to an adjustment device for adjusting the image quality of an image, and more particularly to a sensitivity adjustment for adjusting the sensitivity of the image pickup device. Device and adjustment method [0002] [0003] [0004] With the continuous development of technology, portable electronic devices, such as mobile phones, have a wide range of applications, and are increasingly becoming light, beautiful, and multifunctional. Among them, the camera function is an additional function of the popular mobile phone in recent years. The digital camera module applied to mobile phones must not only meet the requirements of lightness and thinness, but also must have high photographic performance. Sense: The choice of luminosity is one of the important parameters affecting the photographic quality of camera modules. Therefore, the adjustment of sensibility is beneficial to the improvement of image brightness and photographic quality. Sensitivity refers to the photographic ability of a camera according to the intensity of the light source. In digital cameras, the sensitivity is adjusted by adjusting the v -. pixel value obtained by the image sensor. When the pixel value obtained by the image sensor is enlarged, the sensitivity is increased, and conversely, the sensitivity is lowered. Generally, the sensitivity is adjusted by adjusting the amplifier of the image sensor itself to enlarge or reduce the signal collected by the image sensor, thereby adjusting the sensitivity of the image sensor and the brightness of the acquired image. However, the above method is limited by the design of the amplifier itself, and during the amplification of the signal it collects, the signal is doped with noise, which reduces the quality of the image. [Summary of the Invention]
096126549 表單編號A0101 第4頁/共18頁 0993371786-0 [0005] 有鑒於此，有必要提供一種能減少影像訊號之噪音且調 整感光度之感光度調整裝置及調整方法。 [0006] __ 種感光度調整裝置，其包括一存儲單元，用於存儲預 先設定之複數像素值調整對應表，每個像素值調整對應 表具有一輸入值域以及一與該輸入值域一一對應之輸出 值域；一影像獲取單元，用於獲取影像並取得該影像各 像素點之像素值，並確定各像素值所組成之範圍；—比 較單元，用於將影像獲取單元獲取之像素值範圍與存儲 單元内存儲之各像素值調整對應表之輸入值域比較，並 確定輸入值域；一調整單元，用於根據所確定之輸入值 域所對應之像素值調整對應表將獲^影:氣之像素值進行 調整，並輸出調整後之像素值以調整感丨光度 [0007] [0008] [0009] 一種感光度調整方法，其包括下列步驟： 並確定 從待調整影像上獲取該影像各像素點之像素值， 該像素值所組成之範圍； 將像素值範圍與複數像素值調整對應表之各輸入值域比 較’並確定一輸入值域；及 [〇_根制確定之輸人值蘭應之像素值娜對應表將辦取 影像之像素值進行調整，並輸出調整後之像素值以& 感光度。 ’、以調整 而 且還減少了 [_上述感光度調絲置及調整方法可根據所獲取之影像之 像素值動態地選擇像素值調整對應表以調整攝影：置： 感光度，不僅突破了放大器本身之限制，之 因感光度調整而使放大器產生之雜訊號。 096126549 表單編號A0101 第5頁/共18頁 0993371786-0 1335170 【實施方式】 099年10月15日接正替換頁 [0012] [0013] 下面將。附圖，對本發明作進_步謂細說明。 ’閱圖1 4為本發明實施例之所提供之感光度調整装 置之功能結構。該感光度調整裝置設置於攝像裝置中， 如數位相機、料純減之移動電話以及個人數位處 理等，在本實施例中所述攝像裝置為數位相機。該感光 度調整裝置包括存儲單元11、影像獲取單元12、比較單 元13 '調整單元14。 [0014]096126549 Form No. A0101 Page 4 of 18 0993371786-0 [0005] In view of this, it is necessary to provide a sensitivity adjusting device and an adjusting method for reducing the noise of the image signal and adjusting the sensitivity. [0006] __ sensitivity adjusting device, comprising a storage unit, configured to store a preset multi-pixel value adjustment correspondence table, each pixel value adjustment correspondence table has an input value field and a one-to-one input value field Corresponding output value field; an image acquisition unit, configured to acquire an image and obtain a pixel value of each pixel of the image, and determine a range of each pixel value; - a comparison unit, configured to obtain a pixel value obtained by the image acquisition unit The range is compared with the input value field of each pixel value adjustment correspondence table stored in the storage unit, and the input value field is determined; an adjustment unit is configured to adjust the correspondence table according to the pixel value corresponding to the determined input value field. The pixel value of the gas is adjusted, and the adjusted pixel value is output to adjust the luminosity [0007] [0008] [0009] [0009] A sensitivity adjustment method includes the following steps: and determining to acquire the image from the image to be adjusted a pixel value of each pixel point, a range of the pixel value; comparing the pixel value range with each input value field of the complex pixel value adjustment correspondence table' and determining one The input pixel value and the determined [〇_ root system to be blue values of the pixel value Na correspondence table do take the pixel values of the image adjustment, and outputs adjusted to &; the speed range. ', to adjust and also reduce [_ above the sensitivity adjustment and adjustment method can dynamically select the pixel value adjustment correspondence table according to the pixel value of the acquired image to adjust the photography: set: sensitivity, not only breaks through the amplifier itself The limitation is the noise signal generated by the amplifier due to the sensitivity adjustment. 096126549 Form No. A0101 Page 5 of 18 0993371786-0 1335170 [Embodiment] On October 15, 099, the replacement page is replaced [0012] [0013] BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be described in detail. Figure 14 is a functional structure of the sensitivity adjusting device provided by the embodiment of the present invention. The sensitivity adjusting device is disposed in the image capturing device, such as a digital camera, a mobile phone with pure subtraction, and a personal digital processing. In the embodiment, the image capturing device is a digital camera. The sensitivity adjusting device includes a storage unit 11, an image acquiring unit 12, and a comparing unit 13' adjusting unit 14. [0014]
所述存儲單元11驗存侧歧以㈣像素值調整對 β…:可以想到的S ’該存儲單元11還可以存儲其 他數據，如影像，文字等諸如此類。4 096126549 [0015] 如圖2及圖3所示’該像純難對應表為料之像素值 調整對應表，其所對應之曲線即為伽馬曲線（G_a曲線） 通ϋ X像素值调整對應表之作用，配合所述感光度調 整裝置中各單元模組之作用，可對影像之像素值進行放 大或縮小，從而可以增大或減小數位相機之感光度。該 像素值調整對應表可以有複數個，但其中每個像素值調 整對應表之輸人值域與輸出值域係對應的，且每個 像素值調整對應表之輸人錢之範圍係不同的，其輸出 值域可以相同也可以不同。在本實施例中，僅提供二個 像素值調整對應表llla、1Ub及其所對應曲線 作為不例。在該實施例中’所述像素值調整對應表iub 之輸入值域為像素值調整對應表uia之—半，且它們之 輸出值域是相同的，都氧n 為〇〜255。所述像素值調整對應 表UU之輸入值刻〜255，所述像素值調整對應表⑴bThe storage unit 11 checks the side discrimination with (4) pixel value adjustment pair β...: conceivable S ′ The storage unit 11 can also store other data such as images, text, and the like. 4 096126549 [0015] As shown in FIG. 2 and FIG. 3, the pixel value adjustment correspondence table of the image pure difficulty correspondence table is a gamma curve (G_a curve) corresponding to the X pixel value adjustment. The function of the table, together with the function of each unit module in the sensitivity adjusting device, can enlarge or reduce the pixel value of the image, thereby increasing or decreasing the sensitivity of the digital camera. The pixel value adjustment correspondence table may have a plurality of numbers, but each of the pixel value adjustment correspondence table corresponds to the input value domain and the output value domain, and each pixel value adjustment correspondence table has a different range of input money. The output value fields can be the same or different. In the present embodiment, only two pixel value adjustment correspondence tables 111a, 1Ub and their corresponding curves are provided as an example. In this embodiment, the input value field of the pixel value adjustment correspondence table iub is a half of the pixel value adjustment correspondence table uia, and their output value fields are the same, and the oxygen n is 〇 255. The input value of the pixel value adjustment correspondence table UU is 255 to 255, and the pixel value adjustment correspondence table (1)b
表單編號.A010.1 第6頁/共18頁 0993371786-0 丄丄/0 上； •a入值域G〜127 〇可以理解的是，像素值調整對應表 a之輸入值域與像素值調整對應表⑴b之輸入值域之 比例可以任意，如三 # ^ 、四分之—或其他。當然， 二輪出值域也可以不同。在本實施财，僅為說明感光 度調整裝置及其調整方法，舉如上兩個例子，在感光度 調正過程中，選取其中—個來難數仙機之感光度。 述办像獲取單U 2用於獲取影像並取得該影像各像素Form number.A010.1 Page 6/18 pages 0993371786-0 丄丄/0 up; •a into the range G~127 〇 It can be understood that the pixel value adjustment corresponds to the input value field and pixel value adjustment of table a The ratio of the input value fields of the corresponding table (1)b can be arbitrary, such as three #^, quarters-- or other. Of course, the second round of the range can also be different. In the present embodiment, only the sensitivity adjusting device and the adjusting method thereof will be described. As the above two examples, in the sensitivity adjustment process, the sensitivity of one of them is selected. The image acquisition U 2 is used to acquire an image and obtain each pixel of the image.
099年10月15日 [0016] 狀像素值’並確找像素值賴成之·。該影像獲 取單元12為影像感測晶片。 []所述比幸乂單元13用於將影傳馬托單元獲取之像素值範圍 與存儲單元之各像素值調整如111 a、111 b之輸 入值域比較，並確定—適值所組成之範圍之輸 入值域。 [〇_所述難單元14驗減所確定之輪人值域所對應之像 素值調整對應表1113或111 ^將獲取影像之像素值進行調 整，並輸出調整後之像素植以均备感光度。如果調整後 之像素值與調整前之像素棱相比，調整後之像素值被增 大時’則該感光度被提高了，若調整後之像素值被縮小 ’則該感光度被降低了。 [0019] 可以想到的是，為了擴展像素值調整對應表之數據，該 感光度調整裝置還可以包括一用於初始化設置像素值調 整對應表之輸入值域之初始化設置單元15，其可以隨時 對該像素值調整對應表進行調整。 [0020] 下面將對本實施例所提供之感光度調整裝置之調整方法 096126549 表單編號A0101 第7頁/共18頁 0993371786-0 1335176 [0021] [0022] [0023] [0024] [0025] [0026] [0027] [0028] 096126549 0993371786-0 099年10月15日修正替換頁 進行詳細說明，如圖4所示，為本發明所提供之感光度調 整方法之流程圖。 . 首先，步驟S201，初始化設置像素值調整對應表；. 步驟S2G2 ’從待調整影像上獲取該影像各像素點之像素 值，並確定該像素值所組成之範圍； 步驟S2G3，將像素值範g與各像素值調整對應表⑴&、 111b之輸入值域比較，並確定一輸入值域； 步驟sm ’根據所確定之輸入值域對應之像素值調整射 ^ 應表Ilia或liib將像素值進行調整，並輸出調整後之像 素值以調整感光度》 v 在步驟S201中，所述像素值調整對應表丨鐵^、Η。之初 始化係在影像攝取之前進行的，其像素值調整對應表 111a、nib之設置根據用戶之要求與數位相機本身之性 能來設置，例如，用戶攝影所要之曝光時間以及數位相 機本身之感光度設置範圍。 ' · 在步驟S203中，如圖5所示，所述確定獲取當前影像時適 於感光度調整之像素值調整對應表之輸入值域之方法包 括下列步驟： 首先，步驟S301，獲取影像之各像素點之像素值； 步驟S302，選取各像素值調整對應表Ula、1Ub之輸 入值域之較大端點值大於該像素值之像素值調整對應表 步驟S303，將該像素值分別與各所選取之像素值調整對 表單編號A0101 第8頁/共丨8頁 [0029] 1335176 099年10月15日核正替換頁 應表之輸入值域之較大端點值求差值； [0030] 步驟S304，將所得’差值作比較，取得最小之差值； [0031] 步驟S305，確定與該差值相對應之輸入值域即為所選取 之值域。 [0032] 需要說明的是，在該步驟S303中，所進行比較之像素值 調整對應表為111a、111b，在步驟S304中，只將所得之 兩個差值作比較即可。如果有複數像素值調整對應表時 ，如三個、四個或更多個，則在步驟53〇4中，要將所得 之多個差值兩兩作比較，以取得最小之差值。 [0033] 上述感光度調整裝置及調整.充法可根據所獲年之影像之 像素值動態之選擇像素值調對辱表，以調整無影裝置之 感光度，不僅突破了放大器^身之限制，而且還減少了 因感光度之調整而使放大器產生之雜訊號。 [0034] 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 發明之範圍並不以上述實施方式為限，舉凡熟習本案技 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】 [0035] 圖1係本發明提供之感光度調整裝置之功能模組圖。 陶冑2係本發㈣—像素值霞對絲及細對應之 曲線。 [0037] 096126549 圖3係本發明之另一像素值調整對應表及其所對應之 表單編號A0101 第9頁/共18頁 0993371786-0 1335176 099年10月15日接正替換頁October 15, 099 [0016] The pixel value is determined and the pixel value is determined. The image capturing unit 12 is an image sensing wafer. [] The comparison unit 13 is configured to compare the pixel value range obtained by the image transfer unit with the input value range of each pixel value of the storage unit, such as 111 a, 111 b, and determine the range of the appropriate value. The input value field. [〇_ The pixel value adjustment correspondence table 1113 or 111 corresponding to the wheel person range determined by the difficulty unit 14 is adjusted, and the pixel value of the acquired image is adjusted, and the adjusted pixel is outputted to obtain the sensitivity. . If the adjusted pixel value is increased compared to the pixel edge before adjustment, the adjusted pixel value is increased, and the sensitivity is increased. If the adjusted pixel value is reduced, the sensitivity is lowered. [0019] It is conceivable that, in order to expand the data of the pixel value adjustment correspondence table, the sensitivity adjustment apparatus may further include an initialization setting unit 15 for initializing the input value field of the setting pixel value adjustment correspondence table, which may be The pixel value adjustment correspondence table is adjusted. [0020] The method for adjusting the sensitivity adjustment device provided by the present embodiment is 096126549. Form No. A0101 Page 7 / 18 pages 0993371786-0 1335176 [0022] [0023] [0024] [0025] [0026 [0028] [0028] 096126549 0993371786-0 October 15, 099 revised replacement page for detailed description, as shown in FIG. 4, is a flow chart of the sensitivity adjustment method provided by the present invention. First, in step S201, the pixel value adjustment correspondence table is initialized. Step S2G2 'Acquire the pixel value of each pixel of the image from the image to be adjusted, and determine the range of the pixel value; Step S2G3, the pixel value is g is compared with the input value field of each pixel value adjustment correspondence table (1) &, 111b, and determines an input value field; step sm 'adjusts the pixel value according to the pixel value corresponding to the determined input value field, and the pixel value is Ilia or liib The adjustment is performed, and the adjusted pixel value is output to adjust the sensitivity. v In step S201, the pixel value adjustment corresponds to the table ^, ^, Η. The initialization is performed before the image capturing, and the setting of the pixel value adjustment correspondence table 111a, nib is set according to the requirements of the user and the performance of the digital camera itself, for example, the exposure time required by the user and the sensitivity setting of the digital camera itself. range. In step S203, as shown in FIG. 5, the method for determining the input value range of the pixel value adjustment correspondence table suitable for sensitivity adjustment when acquiring the current image includes the following steps: First, in step S301, acquiring each image a pixel value of the pixel; in step S302, the pixel value adjustment correspondence table of the input value field of each pixel value adjustment correspondence table U1a, 1Ub is larger than the pixel value adjustment table S303, and the pixel value is selected separately Pixel value adjustment for form number A0101 Page 8 / Total 8 pages [0029] 1335176 On October 15, 099, the replacement page should be the difference between the larger endpoint values of the input value field of the table; [0030] S304, comparing the obtained difference values to obtain a minimum difference value; [0031] Step S305, determining that the input value field corresponding to the difference value is the selected value range. It should be noted that, in this step S303, the pixel value adjustment correspondence tables to be compared are 111a and 111b, and in step S304, only the obtained two difference values may be compared. If there are multiple pixel value adjustment correspondence tables, such as three, four or more, then in step 53〇4, the obtained plurality of differences are compared two by two to obtain the smallest difference. [0033] The above-mentioned sensitivity adjusting device and the adjusting and charging method can adjust the sensitivity of the shadowless device according to the selected pixel value of the pixel value dynamic of the obtained image of the year, and not only break the limitation of the amplifier body. And it also reduces the noise generated by the amplifier due to the sensitivity adjustment. [0034] In summary, the present invention complies with the requirements of the invention patent, and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or changes in accordance with the spirit of the present invention. It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0035] FIG. 1 is a functional block diagram of a sensitivity adjusting device provided by the present invention. Tao Xun 2 series of the hair (four) - the pixel value Xia on the silk and fine corresponding curve. [0037] FIG. 3 is another pixel value adjustment correspondence table of the present invention and its corresponding form number A0101 page 9/total 18 pages 0993371786-0 1335176 October 15th, 2010, the replacement page
Gamma曲線0 [0038] 圖4係本發明提供之感光度調整方法之流程圖。 [0039] 圖5係圖4中輸入值域之確定方法之流程圖。 【主要元件符號說明】 [0040] 存儲單元：11 [0041] 影像獲取單元：12 [0042] 比較單元：13 [0043] 調整單元：14 ^ [0044] 初始化設置單元：15 [0045] 像素值調整對應表：111a、111b 096126549 表單編號 A0101Gamma Curve 0 [0038] FIG. 4 is a flow chart of a sensitivity adjustment method provided by the present invention. [0039] FIG. 5 is a flow chart of a method for determining an input value range in FIG. [Main component symbol description] [0040] Storage unit: 11 [0041] Image acquisition unit: 12 [0042] Comparison unit: 13 [0043] Adjustment unit: 14 ^ [0044] Initialization setting unit: 15 [0045] Pixel value adjustment Correspondence table: 111a, 111b 096126549 Form number A0101
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