525366 6398twf.doc/006 A7 B7 五、發明說明（1 ) 本發明是有關於一種掃描器及影像掃描方法，旦特別 是有關於一種使用多欄感測裝置的掃描器及影像掃描方 法。 隨著多媒體視訊的蓬勃發展，影像處理的速度與淸晰 度就逐漸成爲大眾所追求的目標。而在各種多媒體，稱訊裝 置中，掃描器可說是最早開始發展的視訊元件。然而’由 於掃描器的運作方法是藉由文件上的反射光，或晏遂射過 文件後所得的透射光，根據明暗對比來取得影像’因此’ 任何的外來光線或是不規則的散射、繞射等光的特性’都 會對所得的掃描影像造成不同程度的影響。此外’感胃器 (sensor)在製造上的限制，也是導致雜訊產生的因素之~ ° 而雜訊就會使得所得之掃描影像失真。 爲了解決這個問題，習知技術曾提出一種方法’ @京尤 是台灣專利公告第385608號的專利。在此一專利中’習知 技術用一個感測器對同一份文件進行多次的掃描’ 多份掃描影像。之後，再將這些掃描影像取其平均以減少 雜訊對真實影像的影響。然而，這樣的設計必須使感測器 進行多次掃描，因此感測器就必須多次的走走停停’浪費 許多不必要的時間。這樣的缺點在追求效率的現代生活中 來看，實在是令人非常難以忍受的。 綜上所述，習知技術有數項缺失，現列述如下： 1. 對掃描影像中的雜訊不做處理，則所得的掃描影像 就容易產生程度不一的失真；以及 2. 以同一感測器對同一份文件進行多次掃描，則感測 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） U5,,--- (請先閱讀背面之注意事項再填寫本頁) 言·525366 6398twf.doc / 006 A7 B7 V. Description of the invention (1) The present invention relates to a scanner and an image scanning method, and particularly to a scanner and an image scanning method using a multi-column sensing device. With the rapid development of multimedia video, the speed and clarity of image processing have gradually become the goals pursued by the public. Among all kinds of multimedia devices, scanners can be said to be the earliest video components. However, 'because the scanner's operation method is to obtain the image based on the contrast between light and dark through the reflected light on the document or the transmitted light obtained after Yan Sui has passed through the document', therefore, any external light or irregular scattering, The characteristics of the light and other light will affect the scanned image to varying degrees. In addition, the limitation of the 'sensor' manufacturing is also a factor that causes noise to occur, and the noise will distort the obtained scanned image. In order to solve this problem, the conventional technology has proposed a method '@ 京 尤 is the patent of Taiwan Patent Publication No. 385608. In this patent, the conventional technique uses a single sensor to scan the same document multiple times, and multiple scanned images. Afterwards, these scanned images are averaged to reduce the effect of noise on the real image. However, such a design must cause the sensor to scan multiple times, so the sensor must be stopped and stopped many times', wasting a lot of unnecessary time. Such shortcomings are extremely unbearable in modern life in pursuit of efficiency. In summary, there are several shortcomings in the conventional techniques, which are listed as follows: 1. Without processing the noise in the scanned image, the resulting scanned image is prone to distortions of varying degrees; and 2. The same sense The scanner scans the same document multiple times, then the paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) U5 ,, --- (Please read the precautions on the back before filling in this Page) Words ·
經濟部智慧財產局員工消費合作社印製 525366 6398twf.doc/006 A7 B7 五、發明說明（之） 器必須走走停停，除了浪費時間之外，對於掃描器的硬體 而言也會造成不良的影響。 — — — — — — — — — — — — I— · I J (請先閱讀背面之注意事項再填寫本頁) 有鑒於此，本發明提出一種使用多欄感測裝置的掃描 器，適用於掃描一份掃描文件，本掃描器包括一個多欄感 測裝置，一個累加平均器，以及一塊記憶體。其中，多欄 感測裝置對應於任一個色頻（channel)有數條感測線，任何 一條感測線在進行掃描時可得到一份影像訊號。累加平均 器則將相同之色頻所對應的任一感測線對掃描文件之一相 同部分進行]f描所得到的影像訊號予以累加與平均，並得 到一份平均影像訊號。而記憶體則用以儲存影像訊號與儲 存平均影像訊號。此外，本掃描器還可以包括一個記憶體 讀寫位址控制器，此記憶體讀寫位址控制器則用以控制記 憶體中的資料，例如影像訊號或平均影像訊號，存取時所 需的位址。 •線· 本發明還提出一種使用多欄感測裝置的影像掃描方 法。其中，在多欄感測裝置中對應於任一個色頻有數條感 測線，任何一條感測線可用以掃描一份掃描文件而得到相 對應的一份影像訊號。本影像掃描方法首先以這些感測線 依序對掃描文件之一相同部分進行掃描，並得到相對應的 數個影像訊號。之後，再平均這些影像訊號，以得到一份 平均影像訊號。最後再輸出此平均影像訊號。此外，得到 平均影像訊號的步驟是先儲存上述的影像訊號，累加這些 影像訊號，最後再平均累加的這些影像訊號，以得到所想 要的平均影像訊號。再者，本影像掃描方法中得到平均影 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） 525366 6398twf.doc/006 pj _B7_ 五、發明說明（> ) 像訊號的步驟係由管線(Pipdme)的方式進行。 (請先閱讀背面之注意事項再填寫本頁) 綜上所述，本發明以多欄感測裝置進行掃描，因此可 以同時得到多個影像訊號。之後，再藉由管線的方式處理 這些影像訊號的累加與平均。藉由這樣的處理過程，就可 以在短暫的時間中得到低雜訊干擾的掃描影像。 爲讓本發明之上述和其他目的、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圖繪示的是根據本發明之一較佳實施例的掃描器 系統圖； 第2圖繪示的是根據本發明之另一較佳實施例的掃描 器內部電路方塊圖；以及 第3圖繪示的是根據本發明之又一較佳實施例的資料 產生順序圖。 經濟部智慧財產局員工消費合作社印製 重要元件標號 100 :掃描器 110，310 :掃描文件 120 :反射鏡 13 0 :透鏡組 140，210 :多欄感測裝置 142，144，146，312-334 :感測元件 142a-142c，144a-144c，144a-144c ··感測線 220 :類比/數位轉換器 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 525366 6398twf.doc/006 A7 B7 五、發明說明（Lf ) 230 :累加平均器 240 :記憶體 250 :記憶體讀寫位址控制器 310a，310b，310c :掃描文件的一部分 350 :輸出資料 350a，350b，350c :平均影像訊號 較佳實施例Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 525366 6398twf.doc / 006 A7 B7 V. Description of the invention (the device) The device must be stopped and stopped. In addition to wasting time, it will also cause bad effects on the scanner hardware Impact. — — — — — — — — — — — — — I— IJ (Please read the notes on the back before filling this page) In view of this, the present invention proposes a scanner using a multi-column sensing device, suitable for scanning A scan file, the scanner includes a multi-column sensing device, an accumulating averager, and a memory. Among them, the multi-column sensing device has a plurality of sensing lines corresponding to any color channel, and any one sensing line can obtain an image signal when scanning. The accumulating averager performs accumulation and averaging on the image signals obtained by scanning any sensing line corresponding to the same color frequency to the same part of a scanned file, and obtains an average image signal. The memory is used to store the image signal and the average image signal. In addition, the scanner can also include a memory read-write address controller. This memory read-write address controller is used to control the data in the memory, such as image signals or average image signals. Address. • Line • The present invention also proposes an image scanning method using a multi-column sensing device. Among them, in a multi-column sensing device, there are several sensing lines corresponding to any color frequency, and any one sensing line can be used to scan a scan file to obtain a corresponding image signal. This image scanning method first scans the same part of a scanned file with these sensing lines in sequence, and obtains several corresponding image signals. After that, these image signals are averaged again to obtain an average image signal. Finally, the average image signal is output. In addition, the step of obtaining the average image signal is to first store the above image signals, accumulate these image signals, and finally average the accumulated image signals to obtain the desired average image signal. Furthermore, the average photo paper size obtained in this image scanning method is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 public love) 525366 6398twf.doc / 006 pj _B7_ V. Description of the invention (>) Image signal steps By pipeline (Pipdme). (Please read the precautions on the back before filling this page.) In summary, the present invention scans with a multi-column sensing device, so you can get multiple image signals at the same time. After that, the accumulation and averaging of these image signals are processed by pipeline. Through such a process, a scanned image with low noise interference can be obtained in a short time. In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following describes the preferred embodiments in detail with the accompanying drawings as follows: = Brief description of the drawings: FIG. 1 Shows a scanner system diagram according to a preferred embodiment of the present invention; FIG. 2 shows a scanner internal circuit block diagram according to another preferred embodiment of the present invention; and FIG. 3 shows It is a data generation sequence diagram according to another preferred embodiment of the present invention. Employees' cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs printed important component numbers 100: scanners 110, 310: scanned documents 120: mirrors 13 0: lens groups 140, 210: multi-column sensing devices 142, 144, 146, 312-334 : Sensing element 142a-142c, 144a-144c, 144a-144c ·· Sensing line 220: Analog / digital converter This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) 525366 6398twf.doc / 006 A7 B7 V. Description of the invention (Lf) 230: Accumulation averager 240: Memory 250: Memory read-write address controller 310a, 310b, 310c: Scan part of the file 350: Output data 350a, 350b, 350c: Average Preferred embodiment of video signal
請參照第1圖，其繪示的是依照本發明一較佳實施例 的一種掃描~器系統圖。在掃描器100之中，包括有一組反 射鏡120，一組透鏡組130，以及一個多欄感測裝置140。 其中，從掃描文件110反射所得的反射光或是透射過掃描 文件後所得的透射光，會經由反射鏡120的反射，再經過 透鏡組130的傳輸，照射到多欄感測裝置140之上。而在 多欄感測裝置140之中，則包括有數個感測元件142，144 與146。在本實施例中，任一個感測元件142，144或146 各自具有三條感測線，分別是感測線142a，142b，142c， 感測線 144a，144b，144c，以及感測線 146a，146b，146c。 但必須注意的是，雖然在本實施例中的感測元件具有三條 感測線，然而這並非限定本發明僅能使用於這樣的掃描器 中。任何使用多欄感測器的掃描器，也就是於單一色頻 (channel)中有多條感測線的掃描器，無論感測線數量的多 寡與排列方式，皆能使用本發明而得到本發明所提供的效 果。舉例來說，在本實施例中的感測元件142，144與146， 可以是各自具備有RGB三種色頻感測線（亦即，142a爲R 6 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -------I--I---裝---- (請先閱讀背面之注意事項再填寫本頁) 訂-· 線· 525366 6398twf.doc/006 pj B7 五、發明說明（f) 色頻，142b爲G頻，142c爲B頻）的感測元件，也可以是 具有多條同色頻之感測線的感測元件（亦即，142a-142c皆 爲R頻，144a-144c皆爲G頻，146a-146c皆爲B頻）。當然， 單色掃描器也可以採用本發明所提供的系統。 在本實施例中，由掃描文件110的一個相同部分所得 的光，在經過反射鏡120及透鏡組130的傳輸後，會依照 感測元件142, 144與146的排列順序以及多欄感測裝置140 的前進方向，依序照射在感測元件142，144及146上。而 掃描器則將分別由感測元件142，144及146(實際上，是感 測線 142a-142c，144a-144c 及 146a-146c)對掃描文件 110 之 相同部分進行掃描所得的影像訊號分別予以累加並平均， 再將經過累加與平均後所得的平均影像訊號輸出，以做爲 進行後續處理之掃描影像的資料來源。 請參照第2圖，其顯示了根據本發明之另一較佳實施 例的掃描器內部電路方塊圖。在本實施例中，包括了一個 多欄感測裝置210，一個類比/數位轉換器220，一個累加 平均器230，一塊記憶體240，以及一個記憶體讀寫位址控 制器250。其中，累加平均器230之中具有一個加法器與一 個除法器，以分別進行影像的累加與平均。由多欄感測裝 置210所得到以類比訊號表示的影像訊號，在經過類比/數 位轉換器220轉換爲以數位訊號表示的影像訊號後，會經 過累加平均器230的處理而存進記憶體240之中。其中， 累加平均器230的處理過程爲，當掃描文件的一部分第一 次被掃描到時，掃描所得的影像訊號會直接存入記憶體240 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ---— — — — — — — — — — - I.1 (請先閱讀背面之注意事項再填寫本頁) i^T* 痤齊部A曰慧財t咼員X.消費合阼；^一印製 525366 6 3 9 8 twf . doc / 0 0 6 pj B7 五、發明說明（6) 中；而當同一部分被接續的其他感測元件掃描到時，則此 時掃描到的影像訊號就會先在累加平均器230中，藉由加 法器以與儲存在記憶體240內的先前儲存的影像訊號相 加，再將相加後所得的影像訊號儲存在記憶體240之中， 以做爲下一個影像訊號累加時所使用的訊號。當最後一個 對應於掃描文件同一部分所得的影像訊號，從多欄感測裝 置210經過類比/數位轉換器220而送進累加平均器230的 時候，記憶體240中所儲存之對應於此同一部分的影像訊 號也會被送進累加平均器240之中，而在兩個影像訊號經 過加法器的累加之後，累加平均器230更會將相加後所得 的影像訊號經過累加平均器230中的除法器進行平均的操 作，並據此得到一個平均影像訊號。此一平均影像訊號則 儲存在記憶體240中，準備輸出以做爲後續影像處理程序 所使用的資料來源。 此外，記憶體讀寫位址控制器250在本實施例中係用 以在累加平均器230進行累加及平均的過程中，指定記憶、 體240中要讀出之影像訊號所儲存的位址，以及指定在累 加或平均後所得的影像在記憶體240中儲存的位址。 當然，在處理的過程中，由色頻R之感測線所產生的 影像訊號，只與其他同樣爲色頻R之感測線所產生的影像 訊號做累加與平均，而與其他色頻的影像訊號無關。同樣 的，其他色頻的處理也不與其他色頻的影像訊號相混合。 請參照第3圖，其繪示的是根據本發明之又一較佳實 施例的資料產生順序圖。首先，在T=t的時候，感測元件 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) 裝 線· 525366 6 3 9 8 twf . doc/ 0 0 6 pj _ B7 五、發明說明（7) -------------裝---^ (請先閱讀背面之注意事項再填寫本頁) 312掃描過掃描文件310的一個部分310a而得到一份影像 訊號。之後，隨著多欄感測器照著箭頭360所指的方向前 進，在T=2t，T=3t的時候，各有一個感測元件314與316 分別掃描過掃描文件310中標示爲310a的部分，並且各自 得到一個相對應的影像訊號◦而在同時，感測元件312則 分別掃描掃描文件310中標示爲310b與310c的部分，並 分別得到相對應的影像訊號。 --線. 在本實施例中，於T=t時由感測元件312掃描掃描文 件之一部分310a所得的影像訊號會先儲存在記憶體中。接 著，在T=2t的時候，由感測元件312掃描掃描文件之一部 分310a所得的影像訊號就和前一個同樣來自掃描文件之一 部分310a的影像訊號相加，並將相加後的結果存放於記憶 體中。這樣的累加過程一'直到T= 12t時，感測兀件334掃 描過掃描文件之一部分310a所得的影像訊號也累加完畢爲 止。而當最後一份影像訊號累加完後，這個累加後所得的 影像訊號就會由如第2圖中所示的累加平均器230來加以 平均。而經過平均後所得的平均影像訊號（假設於T=13t時 得到），則做爲後續影像處理時所需的資料來源。 經齊邹智慧財轰局員工消費合阼：^一印製 而對於掃描文件310的其他部分，如310b ’ 310c等， 本發明也以上述的方式，並輔以管線（Pipeline)的方式來進 行。因此，在本實施例中，在T=13t得到第一個平均影像 訊號後，每隔一個時間t就可以得到一個平均影像訊號。 藉此，除了可以經由平均影像訊號的方法而得到雜訊低的 掃描影像外，所需要的時間也與以一般掃描器所需的時間 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 525366 6398twf.doc/006 pj __B7 五、發明說明（？） 相去不遠（在本實施例中，僅比一般掃描器需要的時間多 13t)。 綜上所述，本發明可以在短暫的時間中得到低雜訊干 擾的掃描影像，以提供使用者快速且淸晰的影像取得管 道。 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。 (請先閱讀背面之注意事項再填寫本頁) 裝 訂： --線· 痤齊部皆慧讨轰苟員11消費^乍?£中製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）Please refer to FIG. 1, which shows a system diagram of a scanner according to a preferred embodiment of the present invention. The scanner 100 includes a set of reflecting mirrors 120, a set of lens groups 130, and a multi-column sensing device 140. Wherein, the reflected light obtained from the scanning document 110 or the transmitted light obtained after being transmitted through the scanned document will be reflected by the reflecting mirror 120 and then transmitted by the lens group 130 to illuminate the multi-column sensing device 140. The multi-column sensing device 140 includes a plurality of sensing elements 142, 144, and 146. In this embodiment, each of the sensing elements 142, 144, or 146 has three sensing lines, namely, sensing lines 142a, 142b, and 142c, sensing lines 144a, 144b, and 144c, and sensing lines 146a, 146b, and 146c. It must be noted that although the sensing element in this embodiment has three sensing lines, this is not to limit the present invention to only be used in such scanners. Any scanner using multi-column sensors, that is, a scanner with multiple sensing lines in a single color channel, regardless of the number and arrangement of the sensing lines, can use the present invention to obtain the present invention. The effect provided. For example, the sensing elements 142, 144, and 146 in this embodiment may each be provided with three color frequency sensing lines of RGB (that is, 142a is R 6. The paper size is applicable to the Chinese National Standard (CNS) A4 specification. (210 X 297 mm) ------- I--I --- install ---- (Please read the precautions on the back before filling this page) Order- · Line · 525366 6398twf.doc / 006 pj B7 V. Explanation of the invention (f) Color frequency sensor, 142b is G frequency, 142c is B frequency), or it can be a sensing element with multiple sensing lines of the same color frequency (ie, 142a-142c are all Are R-frequency, 144a-144c are G-frequency, and 146a-146c are B-frequency). Of course, a monochrome scanner can also use the system provided by the present invention. In this embodiment, the light obtained by scanning a same portion of the document 110 is transmitted through the reflecting mirror 120 and the lens group 130 according to the arrangement order of the sensing elements 142, 144, and 146 and the multi-column sensing device. The forward direction of 140 is sequentially illuminated on the sensing elements 142, 144, and 146. The scanner will accumulate the image signals obtained by scanning the same part of the scan file 110 by the sensing elements 142, 144, and 146 (actually, the sensing lines 142a-142c, 144a-144c, and 146a-146c). After averaging, the average image signal obtained after accumulation and averaging is output as the data source of the scanned image for subsequent processing. Please refer to Fig. 2, which shows a block diagram of an internal circuit of a scanner according to another preferred embodiment of the present invention. In this embodiment, a multi-column sensing device 210, an analog / digital converter 220, an accumulation averager 230, a memory 240, and a memory read / write address controller 250 are included. Among them, the accumulating averager 230 has an adder and a divider to perform image accumulation and averaging respectively. The image signal represented by the analog signal obtained by the multi-column sensing device 210 is converted into the image signal represented by the digital signal by the analog / digital converter 220, and then stored in the memory 240 by the accumulating averager 230. In. The processing of the accumulating averager 230 is that when a part of the scanned document is scanned for the first time, the image signal obtained by the scanning is directly stored in the memory 240. The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ---— — — — — — — — — — I.1 (Please read the precautions on the back before filling in this page) i ^ T * The Department of Acoustics, A, Huicai, T 咼 X Consumption combination; ^ one printed 525366 6 3 9 8 twf. Doc / 0 0 6 pj B7 5. In the description of the invention (6); and when the same part is scanned by other sensing elements connected, then at this time The scanned image signal is first added to the accumulation averager 230 by an adder to the previously stored image signal stored in the memory 240, and then the added image signal is stored in the memory 240. Among them, it is used as the signal for the next image signal accumulation. When the last image signal corresponding to the same part of the scanned document is sent from the multi-column sensing device 210 to the accumulating averager 230 through the analog / digital converter 220, the stored in the memory 240 corresponds to this same part The image signal is also sent to the accumulating averager 240. After the two image signals are accumulated by the adder, the accumulating averager 230 further divides the image signals obtained by the addition by the accumulating averager 230. The device performs the averaging operation and obtains an average image signal accordingly. This average image signal is stored in the memory 240 and is ready to be output as a data source for subsequent image processing procedures. In addition, in this embodiment, the memory read-write address controller 250 is used to specify an address to be stored in the image signal to be read out in the memory and the body 240 during the accumulation and averaging process by the accumulation averager 230. And specify the storage address of the image obtained after the accumulation or averaging in the memory 240. Of course, in the process of processing, the image signals generated by the sensing lines of the color frequency R are only accumulated and averaged with the image signals generated by other sensing lines that are also the color frequency R, and are compared with the image signals of other color frequencies. Nothing. Similarly, the processing of other color frequencies is not mixed with the image signals of other color frequencies. Please refer to FIG. 3, which shows a data generation sequence diagram according to another preferred embodiment of the present invention. First of all, at T = t, the paper size of the sensing element applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling this page). Assembly line · 525366 6 3 9 8 twf .doc / 0 0 6 pj _ B7 V. Description of the Invention (7) ------------- Installation --- ^ (Please read the precautions on the back before filling in this page) 312 scans a portion 310a of the scan file 310 to obtain an image signal. After that, as the multi-column sensors move in the direction indicated by the arrow 360, when T = 2t and T = 3t, each of the sensing elements 314 and 316 is scanned over the scan file 310 labeled 310a. Part, and each get a corresponding image signal. At the same time, the sensing element 312 scans the parts marked 310b and 310c in the scan file 310, and obtains the corresponding image signal. --Line. In this embodiment, at T = t, the image signal obtained by scanning the portion 310a of the scan file by the sensing element 312 will be stored in the memory first. Then, at T = 2t, the image signal obtained by scanning the part 310a of the scanning document by the sensing element 312 is added to the previous image signal also coming from the part 310a of the scanning document, and the added result is stored in In memory. Such an accumulation process is not completed until T = 12t, and the image signal obtained by the sensing element 334 scanning through a portion 310a of the scan file is also accumulated. When the last image signal is accumulated, the image signal obtained by the accumulation is averaged by the accumulation averager 230 as shown in FIG. 2. The average image signal obtained after averaging (assuming it is obtained at T = 13t) is used as the data source for subsequent image processing. According to Qi Zou, the staff of the Wealth and Financial Affairs Bureau, the consumption of the employees is as follows: For other parts of the scanned document 310, such as 310b'310c, etc., the present invention is also performed in the manner described above, supplemented by a pipeline method. . Therefore, in this embodiment, after obtaining the first average image signal at T = 13t, an average image signal can be obtained at every time t. In this way, in addition to the method of obtaining a low-noise scanned image by averaging the image signal, the time required is also the same as the time required for a general scanner. This paper standard applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 525366 6398twf.doc / 006 pj __B7 V. Description of the invention (?) Not far apart (in this embodiment, it is only 13t longer than the average scanner). In summary, the present invention can obtain a scanned image with low noise in a short time, so as to provide users with a fast and clear image acquisition pipeline. Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and retouches without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be determined by the scope of the attached patent application. (Please read the precautions on the back before filling this page) Binding: --Line · Acoustics Department is wise to discuss the consumption of 11 members ^ At first? £ Chinese paper size is applicable to China National Standard (CNS) A4 specifications (210 X 297 mm)