201030581 六、發明說明： 【發明所屬之技術領域】 、本發明是有關於觸控領域之技術，且特別是有關於一種感 測系統及其取得指示物之位置的方法。 【先前技術】 • 圖1為習知之一種感測系統(sensing system)的立體圖。請參 …、圖1，此感測系統1 〇〇用以感測指示物（的位置。 '感測系統100除了包括有反射鏡104、反光元件 106及108之外， ❹還包括有影像感測裝置110及處理電路112。反射鏡104、反光 兀件106及1〇8,還有影像感測裝置11()皆配置在同一個平面A14 上，此平面114例如是一個白板（whiteb〇ard)。此外，標示116 所指之矩形區域即是用以作為感測系統 1 〇〇的感測區域。 上述之反光元件106及108皆可將光線反射至感測區域 116而反射鏡1 〇4則可形成感測區域116之鏡像㈣叮沉丨脱㈣。 反射鏡104可以是利用一平面反射鏡(planemirr〇r)來實現，且其 鏡面118朝向感測區域116。至於影像感測裝置11〇，其設置在 感測區域116的一個角落’且其感測範圍涵蓋感測區域n6。處 © 理電路112電性連接影像感測裝置110,以依據影像感測裝置110 所感測到的影像來計算出指示物1〇2的位置。 圖2為感測系統100之操作方式的說明圖。如圖2所示， 虛線202以下的部分’乃是簡略地繪示鏡面u8所會映照到之部 分的感測系統100 ’而虛線202以上的部分，則是藉由鏡面118 之映照而形成上述部份感測系統的鏡像。在此圖中，標示 106’所指之物就是反光元件1〇6的鏡像，標示1〇8，所指之物就是 反光元件108的鏡像’標示11〇，所指之物就是影像感測裝置110 的鏡像，而標示116’所指之區域就是感測區域u6的鏡像，至 於標示102’所指之物則是指示物1〇2的鏡像。是以，影像感測 201030581 裝置110能沿著感測路線204而感測到指示物102,也能沿著感 測路線206而感測到指示物102的鏡像102’。 圖3即為圖2之影像感測裝置110所感測到之影像的示意 圖。在圖3中，標示300表示為影像感測裝置110的影像感測窗 (image sensing window)。而標示302所指之斜線區域即是藉由反 光元件106及反射鏡104所反射的光線’而在影像上形成亮度較 高的亮區(bright zone)，此亮區302就是主要的感測區。至於標 . 示304就是指示物102所造成的暗紋，而標示306則是指示物 ❹ 102之鏡像102’所造成的暗紋。如此一來，處理電路112就能根 據暗紋304及306於影像感測窗300中的位置，來進一步計算出 指示物102的位置’而其詳細的計算方式可以參考中華民國專利 申請案第097126033號。 然而，感測系統100有一個缺點，以圖4來說明之。圖4 為感測系統100的另一操作說明。如圖4所示，當指示物1〇2 靠近感測區域116的邊界192時，儘管影像感測裝置110還是能 夠沿著感測路線402而感測到指示物102，也能夠沿著感測路線 404而感測到指示物1〇2的鏡像102，，然而由於感測路線402及 ❹ 404二者太過相近，因此在影像感測裝置11〇所感測到的影像 中’可能只會出現單一暗紋，以圖5來說明之。 圖5即為圖4之影像感測裝置110所感測到之影像的示意 圖。如圖5所示’標示5〇2所指的暗紋已分不清是由指示物ι〇2 所造成的暗紋，還是由指示物102的鏡像102,所造成的暗紋。 在此情況下’感測系統1〇〇所計算出之指示物1〇2的位置，就容 易有很大的誤差，甚至無法計算出指示物102的位置。 【發明内容】 本發明的目的就是在提供一種感測系統，其不管指示物位 4 201030581 於感測區域的哪個位置，都可進行指示物位置之計算’並能較精 確地計算出指示物之位置。 本發明的另一目的是提供一種取得指示物之位置的方法， 適用於上述之感測系統。 本發明提出一種感測系統，其包括有感測區域、反射鏡、 第一影像感測裝置、第二影像感測裝置及處理電路。反射鏡用以 形成感測區域之鏡像。第一影像感測裝置及第二影像感測裝置皆 " 用以感測感測區域之影像，且在這二個影像感測裝置中，至少有 @ 一影像感測裝置的感測範圍涵蓋全部之感測區域。至於處理電 路，其操作是當有一指示物鄰近或接觸感測區域時，處理電路便 依據第一影像感測裝置所感測到之指示物及感測到之指示物的 鏡像，來計算出指示物之第一座標值，並據以賦予第一座標值第 一權重，且處理電路亦依據第二影像感測裝置所感測到之指示物 及感測到之指示物的鏡像，來計算出指示物之第二座標值’並據 以賦予第二座標值第二權重，以便依據第一座標值、第一權重、 第二座標值及第二權重來計算指示物之位置。 本發明又提出另一種感測系統，其包括有感測區域、反射 ❹鏡、第一影像感測裝置、第二影像感測裝置、第一處理電路及第 二處理電路。反射鏡用以形成感測區域之鏡像。第一影像感測裝 置设置及第二影像感測装置皆用以感測感測區域之影像，且在上 述二個影像感測裝置中’至少有—影像感測裝置的感測範圍涵蓋 全部之感測區域。至於第—處理電路，其操作是當有—指示物鄰 $或接觸Μ區域時’第—處理電路便依據第—影像感測裝置所 &測到之指7F物錢_彳之指示物的鏡像，來計算出指示物之第 :座標值，並據以賦予第一座標值第一權重。而第二處理電路的 采作疋接收第-座標值及第_權重，並依據第一權重決定是否利 201030581 用第汾像感/則裝置來感測指示物及指示物的鏡像，以便計算出 指示物之位置。 ❹ 〇 本發月再&出一種取得指示物之位置的方法，其適用於一 感測系、、充所述感測系統具有感測區域、反射鏡、第一影像感測 裝置及第二影像感測裝置。反射制⑽成制區域之鏡像。第 -影像感測裝置及第二影像感測裝置㈣以感測感測區域之影 像I且在"t述二個影像感測裝置中，至少有一影像感測裝置的感 測範圍涵盍全部之感測區域。所述方法包括下列步驟：首先，依 據第-影像制裝置所感酬之—指*物及制到之指示物的 鏡像，來计算出指示物之第一座標值，並據以賦予第一座標值第 一權重’以及依據第二影像感測裝置所感測到之上述指示物及感 =之指示物的鏡像，來計算㈣示物之第二座標值，並據以賦 予第二座標值第二權重。接著，依據第一座標值、第一權重、第 二座標值及第二權重來計算出指示物之位置。 本發明又再提出另-種取得指示物之位置的方法，其適用 ，一感測系統。所述感測系統具有感_域、反射鏡、第一影像 裝置及第二影像感測裝置。反射鏡用以形成感測區域之鏡 =第-影像感職置及第二影像朗裝料用喊贼測區域 之衫像’且在上述二個影像感測裝置中，至少有—影像感 的感測範圍涵蓋全部之感測區域。所述方法包括下列步驟： =，依據第-影佩離置所感㈣之—知物及感測$之七示 2鏡像’來計算出指示物之第-座標值，並據以料第一座標 =二權重。接著，依據第-權重決定是否第二影像感測裝 =來感測上述料物及㈣物的鏡像，叫計算出指示物之位 置0 依照本發明-實施_述’本發Μ括是對應於第一影像 201030581 感測裝置而將感測區域視為第— 區塊’以賦予每-區塊-權重，當叶算出帛成f域為多個 不物在第域中所處之區塊的權重，來一 此外，本發明亦包括是制第_ 4上权第一權重。 為第- W ―贫于應於第一衫像感測裝置而將感測區域視 算分為多個區塊，以賦予每-區塊- s玫時’便以指示物在第二區域中所處之 &塊的權重，來作為上述之第二權重。 r㈣心 ❹ Ο 同角^發if用是將二/固影像感測裝置設置於感測區域的二個不 物像感測裝置所取得的影像，來分別計算 像感測裝置的擺放位置而賦予^ 標值後’便對應於影 賦^麼不即準確程度）。因此，只要能適當地 ，並缺财料算出㈣物德置。進一 ^ 算出f示物i彻其巾―影像^職置所取得的影像，來計 賦予、:箸庙2 並先對應於此影像感測裝置的擺放位置而 ，私顯料麟㈣重度（即準 像，二m疋疋否需要利用到另一個影像感測裝置來取得影 口要筆具有更高準確程度的座標值。故同樣地， 晋、要月^虽地賦予權重’那麼不管指示物位於感測區域的哪個位 之轉健謂m㈣確地計算出指示物 為讓本發明之上述和其他目的、特徵和優點能更明顯易 ，下文特舉較佳實施例，並配合所附圖式，作詳細說明如下。 【實施方式】 圖6為依照本發明一實施例之感測系統的示意圖。請參照 201030581 圖6，此感測系統60〇用以感測指示物602的位置。感測系統600 除了包括有反射鏡604之外，還包括有發光元件006、608與 610，以及影像感測裝置612、014與處理電路610。在此例中， 反射鏡604還有發光元件6〇6、6〇8與61〇，以及影像感測裝置 612、614皆配置在同一個平面（未繪示)上，例如配置在一白板的 一表面上。 在圖6中，標示618所指之區域呈現出四邊形的形狀，此 .區域即用以作為感測系統600的感測區域。在此例中，感測區域 ❹ 618的形狀為矩形。上述之發光元件6〇6、6〇8及61〇皆用以朝 著感測區域618而發光，而反射鏡604則用以形成感測區域618 之鏡像。反射鏡604可以是利用一平面反射鏡來實現，且其鏡面 620朝向感測區域618。此反射鏡604的較佳配置方式，是使其 鏡面620垂直於上述平面。影像感測裝置612及614分別設置感 測區域618的二個不同角落’且這二個影像感測裝置的感測範圍 分別涵蓋感測區域618。至於處理電路616，其電性連接影像烕 測裝置612及614，用以依據這二個影像感測裝置所取得的影 像’來計算出指示物602之位置。以圖7來進一步說明之。 © 圖7為感測系統600之操作方式的說明圖。如圖7所示，虛 線702以下的部分’乃是簡略地緣示鏡面620所會映照到之部分 的感測系統600 ’而虛線702以上的部分，則是藉由鏡面62〇之 映照而形成上述部份感測系統100的鏡像。在此圖中，標示6〇6, 所指之物就是發光元件606的鏡像，標示608,所指之物就是發 光元件608的鏡像’標示610’所指之物就是發光元件61〇的鏡 像，標示612’所指之物就是影像感測裝置612的鏡像，標示614, 所才日之物'y尤疋衫像感測裝置614的鏡像，而標示618,所指之巴 域就是感測區域618的鏡像，至於標示602’所指之物則是指示 201030581 物602的鏡像。是以’影像感測裝置612能沿著感測路線崩 而感測到指不物602，也能沿著感測路線7〇6而感測到指示物6 的鏡像602’。同理，影像感測裝置614能沿著感測路線7⑽而 感測到指示物602，也能沿著感測路線71〇而感測到指示物恥 的鏡像602’。 於是，處理電路616便可依據影像感測裝置612所感測到 之指示物602及感測到之指示物6〇2的鏡像6〇2，，來計算出指 .示物602之第一座標值。更明確地說，指示物602及其鏡像6〇2, ❹會在影像感測裝置612的影像感測窗中形成暗紋，而處理電路 616能根據指示物602及其鏡像602,所造成的暗紋，來進一步計 算出指示物602之第一座標值。在計算出上述第一座標值後，處 理電路616便會對應於影像感測裝置612的擺放位置而賦予第一 座標值第一權重，藉以權衡第一座標值的重要程度（即準確程 度），其賦予第一權重的方式以圖8來說明之。 圖8用以說明賦予第一權重的其中一種方式。在圖8中， 虛線702以下由線段FC、、反及呑;所組成的矩形區域， 乃是感測區域618 ’而虛線702以上由線段]、記、茂 © 所組成的矩形區域’乃是感測區域618的鏡像618,。在此例中， 處理電路616是對應於影像感測裝置612而將感測區域618視為 第一區域，並將此第一區域劃分為五個區塊，分別以U來標 示。如圖所示’若指示物602是位於區塊1中，那麼順著影像感 測裝置612感測到指示物602及其鏡像602,的二條感測路線而 延伸’都會與感測區域618之鏡像618,的線段巧相交。而若指 示物602是位於區塊2中，那麼順著影像感測裝置612感測到指 示物602及其鏡像602’的二條感測路線而延伸，則會分別與感 測區域618之鏡像618,的線段&及線段巧相交。至於區塊3〜5 201030581 則依此類推，不再贅述。 處理電路616會賦予上述每一區塊一權重，且這些區塊的 權^白不同。而依圖7之指示物602的位置來看，指示物602 乃疋位於此第-區域的區塊i中，是以處理電路㈣便以區塊i ，權重來作為上述第一權重。由於指示物術位於區塊^中， 疋最有可，讓影像感測裝置612所感測到的影像，發生只出現單 暗紋的f月％ ’因此相較於第_區域其他四個區塊的權重，區塊 ' 1的權重應該要最小。 〇 研再參照圖7。類似地，處理電路616也可依據影像感測裝 置f14所^則到之指示物602及感測到之指示物602的鏡像 6^來計算出指示物之第二座標值。在計算出上述第二座 標值後’處理電路616便會對應於影像感測裝置614祕放位置 而賦予第二座標值第二權重，藉以權衡第二座標值的重要程度 (即準確程度）’其賦予第二權重的方式以圖9來說明之。 圖9用以說明職予第二權重的其中一種方式。在圖9中， 虛線702以下由線段苑、品、沅及莰所組成的矩形區域， 乃是感測區域618,而虛'線702以上由線段冗、記、茂及$ 所組成的矩形區域’乃是感測區域618的鏡像618，。在此例中， 處理電路616是對應於影像感測裝置614而將❹m域618視為 第二區域’並將此第二區域劃分為五個區塊，分別以6〜10來標 π °而由圖9可知’此第二區域所劃分的五個區塊乃是與前述第 一區域所劃分的五個區塊互相對稱。 處理電路616同樣會料第二區域中的每_區塊一權重， 且這些區塊的權重皆不同。在此例中’區塊6〜10的權重分別與 前述區塊1〜5的權重相同。而依圖7之指示物602的位置來看、’ 才曰示物602 75是位於此第二區域的區塊9中，是以處理電路咐 201030581 便以區塊9的權重，來作為 知，在此例中，第二權重會=二權重。而藉由前述之說明可 接下來，處理電:616;二第-權重。 指示物602之位置：M更可以下列式⑴所述方式來計算出 P-^P1+W2p2.···..⑴ ’其中P為指示物之位詈，y 為第二權重，而i>2為第-座^ —權重’ Pl為第—座標值，％ a ,,, ,馬第一座軚值。當然，處理電路616也可以 疋以加權平均的方絲計 也了以 所述： 伯丁物602之位置，如下列式（2) P = + wiP2) /(^1 + W2) .··.·. (2) t例中’由於第二權重大於第—權重’故第—權重會將第一 =值的重要程度拉低，而第二權重會將第二座標值的重要I 拉南’因此能夠較精確地計算出之指示物搬的位置。-由前述可知，難於圖丨所示之感 ，可藉由權重之分配來進行指示物位置之計算。因:=感充 測系統600能適當地分配權重，那麼不管指示物位於感測區域的 ❹ 哪個位置，感測系統_都可進行指示物位置之計算，並能較 確地計算出指示物之位置。 圖10為依照本發明另一實施例之感測系統的示意圖。請參 照圖10及圖6,經比較之後可發現，圖10所示之感測系統1〇〇〇 圖6所示之感測糸統600的不同之處在於，感測系統的 處理電路是由子處理電路1002、1004及1006所組成。如圖10 所示，子處理電路1002及1004分別電性連接影像感測裝置612 及614’而子處理電路1〇〇6則電性連接子處理電路1〇〇2及 1〇〇4。子處理電路1〇〇2用以依據影像感測裝置612所感測到之 指示物602及感測到之指示物602的鏡像，來計算出第一座標 11 201030581 賦！第一座標值第一權重。而子處理電路腦用以 i置f14所感測到之指示物⑽及感測到之指示物 避料异出第二座標值，並據以賦予第二座標值第二 於:處理電路1006，其用以依據上述之第-座標值、 第權重弟一座標值及第二權重來計算指示物龍之位置。 電路⑽2及職中，子處理電路驗是對應於 而將感測區域618視為第-區域，並將此第- Φ ❿ 612H=健塊，减料—區塊-權重。當子處理電路 第—座標值時’子處理電路觀便以指示物 中所處之區塊的權重，來作為前述之第-權重。201030581 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to the field of touch technology, and more particularly to a sensing system and a method of obtaining the position of the indicator. [Prior Art] Fig. 1 is a perspective view of a conventional sensing system. Please refer to FIG. 1 , the sensing system 1 〇〇 is used to sense the position of the indicator. 'The sensing system 100 includes a mirror 104, reflective elements 106 and 108, and includes an image sense. The measuring device 110 and the processing circuit 112. The mirror 104, the reflecting elements 106 and 1〇8, and the image sensing device 11 () are all arranged on the same plane A14, such as a whiteboard (whiteb〇ard) In addition, the rectangular area indicated by the reference 116 is the sensing area used as the sensing system 1 。. The above-mentioned reflective elements 106 and 108 can reflect light to the sensing area 116 and the mirror 1 〇 4 Then, the mirror image of the sensing region 116 can be formed (4). The mirror 104 can be realized by a plane mirror (planemirr〇r), and the mirror surface 118 faces the sensing region 116. As for the image sensing device 11 That is, it is disposed at one corner of the sensing area 116 and its sensing range covers the sensing area n6. The processing circuit 112 is electrically connected to the image sensing device 110 to be based on the image sensed by the image sensing device 110. To calculate the position of the indicator 1〇2. An explanatory diagram of the operation mode of the measuring system 100. As shown in Fig. 2, the portion below the broken line 202 is a portion schematically showing the sensing system 100' to which the mirror surface u8 is mapped and the portion above the broken line 202. The image of the partial sensing system is formed by mirroring the mirror 118. In this figure, the object indicated by the symbol 106' is a mirror image of the reflective element 1〇6, indicating 1〇8, and the object referred to is reflective. The image 'of the element 108' is labeled 11〇, the object is the image of the image sensing device 110, and the area indicated by the symbol 116' is the mirror image of the sensing area u6, and the object indicated by the label 102' is the indicator. The image of 1〇2 is such that image sensing 201030581 device 110 can sense indicator 102 along sensing route 204 and can also sense image 102' of indicator 102 along sensing route 206. 3 is a schematic diagram of an image sensed by the image sensing device 110 of FIG. 2. In FIG. 3, the indicator 300 is represented as an image sensing window of the image sensing device 110. The oblique line area is through the reflective element 106 and the mirror The light reflected by 104' forms a bright zone with a higher brightness on the image, and the bright zone 302 is the main sensing zone. As for the indication 304, the darkness caused by the indicator 102 is indicated. 306 is a dark line caused by the image 102' of the indicator 102. Thus, the processing circuit 112 can further calculate the position of the indicator 102 according to the position of the dark lines 304 and 306 in the image sensing window 300. The location 'and its detailed calculation method can refer to the Republic of China Patent Application No. 097126033. However, sensing system 100 has a disadvantage, as illustrated in FIG. FIG. 4 is another operational illustration of the sensing system 100. As shown in FIG. 4, when the pointer 1 〇 2 is close to the boundary 192 of the sensing area 116, although the image sensing device 110 can still sense the indicator 102 along the sensing route 402, it can also be sensed along Route 404 senses mirror image 102 of pointer 1〇2, however, since both sense route 402 and 404404 are too close, it may only appear in the image sensed by image sensing device 11〇 A single dark line is illustrated in Figure 5. FIG. 5 is a schematic diagram of an image sensed by the image sensing device 110 of FIG. 4. As shown in Fig. 5, the dark lines indicated by the label 5〇2 are indistinguishable from the dark lines caused by the indicator ι〇2 or the dark lines caused by the mirror image 102 of the indicator 102. In this case, the position of the pointer 1 〇 2 calculated by the sensing system 1 容 is liable to have a large error, and it is not even possible to calculate the position of the pointer 102. SUMMARY OF THE INVENTION It is an object of the present invention to provide a sensing system that can perform the calculation of the position of the indicator regardless of the position of the indication level 4 201030581 in the sensing area and can accurately calculate the indicator. position. Another object of the present invention is to provide a method of obtaining the position of an indicator suitable for use in the sensing system described above. The invention provides a sensing system comprising a sensing area, a mirror, a first image sensing device, a second image sensing device and a processing circuit. The mirror is used to form a mirror image of the sensing area. The first image sensing device and the second image sensing device are both configured to sense the image of the sensing region, and in the two image sensing devices, at least the sensing range of the @ image sensing device covers All sensing areas. As for the processing circuit, when the indicator is adjacent to or in contact with the sensing area, the processing circuit calculates the indicator according to the image sensed by the first image sensing device and the mirror image of the sensed indicator. The first coordinate value is used to assign a first weight to the first coordinate value, and the processing circuit calculates the indicator according to the image sensed by the second image sensing device and the mirror image of the sensed indicator. The second coordinate value 'and the second coordinate value is assigned a second weight to calculate the position of the pointer based on the first coordinate value, the first weight, the second coordinate value, and the second weight. The present invention further provides another sensing system including a sensing area, a reflective frog mirror, a first image sensing device, a second image sensing device, a first processing circuit, and a second processing circuit. The mirror is used to form a mirror image of the sensing area. The first image sensing device and the second image sensing device are both configured to sense the image of the sensing region, and in the two image sensing devices, at least the sensing range of the image sensing device covers all of the Sensing area. As for the first processing circuit, the operation is when the indicator is adjacent to or in contact with the Μ region, the first processing circuit is based on the indicator of the 7F money _ 测 measured by the first image sensing device & Mirroring to calculate the first: coordinate value of the indicator and to assign the first weight to the first coordinate value. The second processing circuit adopts the first coordinate value and the _th weight, and determines whether the 201030581 senses the image of the pointer and the indicator by using the first image sensing device according to the first weight, so as to calculate The location of the indicator. 〇 〇 发 发 再 & a method of obtaining the position of the indicator, which is applicable to a sensing system, charging the sensing system with a sensing area, a mirror, a first image sensing device, and a second Image sensing device. Reflective system (10) mirror image of the area. The first image sensing device and the second image sensing device (4) sense the image I of the sensing region and in the two image sensing devices, at least one of the sensing regions of the image sensing device covers all Sensing area. The method comprises the steps of: firstly, calculating a first coordinate value of the indicator according to the image of the object and the image of the indicator obtained by the first image forming device, and assigning the first coordinate value according to the first coordinate value Calculating (4) a second coordinate value of the display according to the first weight "and the mirror image of the indicator of the indicator and the sense sense sensed by the second image sensing device, and assigning the second coordinate value to the second weight . Then, the position of the pointer is calculated based on the first coordinate value, the first weight, the second coordinate value, and the second weight. The present invention further proposes another method of obtaining the position of the indicator, which is applicable to a sensing system. The sensing system has a sensing domain, a mirror, a first image device, and a second image sensing device. The mirror is used to form the mirror of the sensing area = the first image sensing position and the second image reading device is used to sing the thief to detect the area of the shirt image and in the above two image sensing devices, at least - image sensing The sensing range covers all of the sensing areas. The method comprises the following steps: =, calculating the first coordinate value of the indicator according to the sense of the first image-shadowing (4) - the sense and the sensing of the seven-image of the $, and according to the first coordinate = two weights. Next, determining whether the second image sensing device is used to sense the image of the material and the (4) object according to the first weight, and calculating the position of the indicator 0 according to the present invention - the implementation method is corresponding to The first image 201030581 senses the device and treats the sensing region as the first block to assign a per-block-weight, and when the leaf calculates the f domain into a plurality of blocks in the first domain Weights, in addition, the present invention also includes the first weight of the fourth right. Dividing the sensing area into a plurality of blocks for the first-W--------------------------------------------------------------------------------------------------------------- The weight of the & block is taken as the second weight mentioned above. r (4) ❹ Ο Ο Ο if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if if Ο After assigning the value of ^, it corresponds to the degree of accuracy. Therefore, as long as it is appropriate, and lack of materials to calculate (four) material detainment. Into a ^ to calculate the image of the object i to the towel - image ^ position, to give:, the temple 2 and first corresponds to the location of the image sensing device, privately revealed (4) heavy ( That is, the quasi-image, whether it is necessary to use another image sensing device to obtain a coordinate value of the pen to have a higher degree of accuracy. Therefore, the same as the Jin, the moon is given a weight, then the indication Which of the above-mentioned and other objects, features, and advantages of the present invention will be more readily apparent, and the preferred embodiments of the present invention are described in conjunction with the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [Embodiment] FIG. 6 is a schematic diagram of a sensing system according to an embodiment of the present invention. Referring to 201030581, FIG. 6, the sensing system 60 is used to sense the position of the indicator 602. The measurement system 600 includes, in addition to the mirror 604, light-emitting elements 006, 608, and 610, and image sensing devices 612, 014 and processing circuit 610. In this example, the mirror 604 also has a light-emitting element 6 6, 6〇8 and 61〇, and images The sensing devices 612, 614 are all disposed on the same plane (not shown), for example, on a surface of a whiteboard. In Fig. 6, the area indicated by the symbol 618 exhibits a quadrilateral shape, and the area is The sensing area is used as the sensing area of the sensing system 600. In this example, the sensing area 618 is rectangular in shape. The above-mentioned light-emitting elements 6〇6, 6〇8 and 61〇 are all used to face the sensing area 618. While illuminating, the mirror 604 is used to form a mirror image of the sensing region 618. The mirror 604 can be implemented using a planar mirror with its mirror 620 facing the sensing region 618. A preferred arrangement of the mirror 604 The mirror 620 is perpendicular to the plane. The image sensing devices 612 and 614 respectively set two different corners of the sensing region 618 and the sensing ranges of the two image sensing devices respectively cover the sensing region 618. The processing circuit 616 is electrically connected to the image detecting devices 612 and 614 for calculating the position of the indicator 602 according to the image obtained by the two image sensing devices. This is further illustrated in FIG. 7 is the sensing system 600 An illustration of the mode. As shown in Fig. 7, the portion "below the broken line 702" is a portion of the sensing system 600' to which the mirror surface 620 is reflected, and the portion above the broken line 702 is formed by the mirror 62. The image of the portion of the sensing system 100 is formed by the reflection of the image. In this figure, the symbol 6〇6 is indicated, and the object is the image of the light-emitting element 606, and the symbol 608 is the image of the light-emitting element 608. The object indicated by the symbol 610' is a mirror image of the light-emitting element 61〇, and the object indicated by the symbol 612' is a mirror image of the image sensing device 612, and the symbol 614, the object of the day is the image of the sensing device 614. Mirrored, and labeled 618, the indicated bar domain is a mirror image of the sensing region 618, and the object indicated by the symbol 602' is a mirror image indicating the 201030581 object 602. Thus, the image sensing device 612 can sense the finger 602 along the sensing path, and can also sense the image 602' of the indicator 6 along the sensing path 7〇6. Similarly, the image sensing device 614 can sense the indicator 602 along the sensing route 7 (10) and can also sense the image 602' indicating the object shame along the sensing path 71〇. Therefore, the processing circuit 616 can calculate the first coordinate value of the indicator 602 according to the indicator 602 sensed by the image sensing device 612 and the mirror image 6〇2 of the sensed indicator 6〇2. . More specifically, the indicator 602 and its mirror image 〇2, 形成 will form a dark line in the image sensing window of the image sensing device 612, and the processing circuit 616 can be caused according to the indicator 602 and its mirror image 602. Dark lines, to further calculate the first coordinate value of the indicator 602. After calculating the first coordinate value, the processing circuit 616 assigns a first weight to the first coordinate value corresponding to the placement position of the image sensing device 612, thereby weighing the importance of the first coordinate value (ie, the accuracy). The manner in which the first weight is given is illustrated in FIG. Figure 8 is a diagram for explaining one of the ways of assigning the first weight. In FIG. 8, the dotted line 702 is composed of a line segment FC, a reversed 呑; a rectangular area composed of a sensing area 618' and a broken line 702 above a line area composed of a line segment, a mark, and a ©© is a A mirror image 618 of the sensing region 618. In this example, the processing circuit 616 corresponds to the image sensing device 612 to treat the sensing region 618 as the first region, and divides the first region into five blocks, which are respectively indicated by U. As shown in the figure 'If the indicator 602 is located in the block 1, then the two sensing routes are sensed along the image sensing device 612 to sense the indicator 602 and its mirror 602, and the 'and the sensing area 618' Mirror 618, the line segments coincide. If the indicator 602 is located in the block 2, then the image sensing device 612 senses the two sensing routes of the indicator 602 and its mirror image 602', and then extends to the mirror 618 of the sensing region 618, respectively. , the line segment & and the line segment coincidentally. As for the block 3~5 201030581, and so on, it will not be described again. The processing circuit 616 assigns a weight to each of the above blocks, and the weights of the blocks are different. According to the position of the indicator 602 of FIG. 7, the indicator 602 is located in the block i of the first area, and the processing circuit (4) uses the block i and the weight as the first weight. Since the indicator is located in the block ^, 疋 is most useful, so that the image sensed by the image sensing device 612 occurs only in the f month % of the single dark line. Therefore, compared with the other four blocks in the _ region The weight of the block '1' should be the smallest.再 Research again refer to Figure 7. Similarly, the processing circuit 616 can also calculate the second coordinate value of the indicator according to the image 601 of the image sensing device f14 and the mirror image of the sensed indicator 602. After calculating the second coordinate value, the processing circuit 616 assigns a second weight to the second coordinate value corresponding to the image sensing device 614 secret location, thereby weighing the importance of the second coordinate value (ie, accuracy). The manner in which the second weight is given is illustrated in FIG. Figure 9 is used to illustrate one of the ways in which the second weight is assigned. In FIG. 9, a rectangular area composed of a line segment, a product, a cymbal and a cymbal below the broken line 702 is a sensing area 618, and a virtual area 702 is a rectangular area composed of a line segment redundant, memorandum, and a line. ' is the mirror 618 of the sensing area 618. In this example, the processing circuit 616 corresponds to the image sensing device 614 and regards the ❹m domain 618 as the second region' and divides the second region into five blocks, respectively, labeled π° by 6 to 10 It can be seen from FIG. 9 that the five blocks divided by the second area are symmetrical with the five blocks divided by the foregoing first area. The processing circuit 616 also expects a weight per _block in the second region, and the weights of the blocks are different. In this example, the weights of the blocks 6 to 10 are the same as the weights of the aforementioned blocks 1 to 5, respectively. According to the position of the indicator 602 of FIG. 7, the 'display 602 75 is located in the block 9 of the second area, and the processing circuit 咐201030581 takes the weight of the block 9 as the knowledge. In this case, the second weight will be = two weights. With the foregoing description, it is possible to process the electric: 616; the second-weight. The position of the indicator 602: M can be calculated by the following formula (1) to calculate P-^P1+W2p2. (1) where P is the position of the indicator, y is the second weight, and i> 2 is the first seat ^ - weight 'Pl is the first coordinate value, % a , ,, , the first value of the horse. Of course, the processing circuit 616 can also be described by a weighted average square wire: the position of the slab 602, as shown in the following formula (2) P = + wiP2) / (^1 + W2) .. · (2) In the t example, 'because the second weight is greater than the first weight', the first weight will lower the importance of the first = value, and the second weight will be the important I of the second coordinate value. Therefore, the position at which the pointer is moved can be calculated more accurately. - As can be seen from the foregoing, it is difficult to calculate the position of the pointer by the distribution of the weights. Because: = sense sensing system 600 can properly assign weights, then regardless of the position of the indicator in the sensing area, the sensing system _ can calculate the position of the indicator, and can accurately calculate the indicator position. 10 is a schematic diagram of a sensing system in accordance with another embodiment of the present invention. Referring to FIG. 10 and FIG. 6 , after comparison, it can be found that the sensing system 1 shown in FIG. 10 is different from the sensing system 600 shown in FIG. 6 in that the processing circuit of the sensing system is Processing circuits 1002, 1004, and 1006 are formed. As shown in FIG. 10, the sub-processing circuits 1002 and 1004 are electrically connected to the image sensing devices 612 and 614', respectively, and the sub-processing circuits 1 to 6 are electrically connected to the sub-processing circuits 1〇〇2 and 1〇〇4. The sub-processing circuit 1〇〇2 is configured to calculate the first coordinate 11 201030581 according to the image of the indicator 602 sensed by the image sensing device 612 and the sensed indicator 602. The first value is the first weight. The sub-processing circuit brain uses the indicator (10) sensed by the f14 and the sensed object to avoid the second coordinate value, and accordingly assigns the second coordinate value to the second processing circuit 1006. The position of the indicator dragon is calculated according to the first coordinate value, the first weighted value and the second weight. In the circuit (10) 2 and the middle, the sub-processing circuit checks that the sensing region 618 is regarded as the first region, and the first - Φ 612 612H = the health block, the subtraction - the block - the weight. When the sub-processing circuit first-coordinate value, the sub-processing circuit considers the weight of the block in the indicator as the aforementioned first-weight.
Mm ^路_則是對應於影像感測裝置614而將感測區 二; ’、、~區域’並將此第二區域劃分為多個區塊，以賦予 Ξ 重。當子處理電路1004計算出前述之第二座標值 處：電路1004便以指示物602在第二區域中所處之區塊 的權重，來作為前述之第二權重。 照圖圖111 i T照本發明再一實施例之感測系統的示意圖。請參 ^經比較之後可發現，圖11所示之感測系統1100 ，所不之感測系統_的不同之處在於，感測系統1100是 二處理電路11G2及11G4來取代感測系統_之處理電路㈣。The Mm ^ road_ corresponds to the image sensing device 614 and the sensing region 2; ', ~ region' and divides the second region into a plurality of blocks to give weight. When the sub-processing circuit 1004 calculates the aforementioned second coordinate value: the circuit 1004 uses the weight of the block in which the indicator 602 is located in the second region as the second weight. FIG. 111 is a schematic diagram of a sensing system according to still another embodiment of the present invention. Referring to the comparison, it can be found that the sensing system 1100 shown in FIG. 11 is different from the sensing system _ in that the sensing system 1100 is the two processing circuits 11G2 and 11G4 instead of the sensing system. Processing circuit (4).
’處理電路ug2及1104分別電性連接影像感測I ι_而處理電路1102及1104二者亦互相電性連接。 &測系統1_的操作方式以圖12來說明之。 及圖12 、為感'則系統丨100的其中一種操作流程。請參照圖11 於干物處理電路1102會利用影像感測裝置612來感測 其鏡像’以依據影像感測裝置012所感測到之指示 及1測到之指示物6〇2的鏡像，來計算出指示物602之第 12 201030581 一座標值，並據以賦予此第一座標值第一權重(如步驟sl2〇2所 示）。接著，處理電路1104會接收前述之第一座標值及第一權 重’並依據第一權重決定是否利用影像感測裝置614來感測指示 物602及其鏡像(如步驟S1204所示）。 ❹ ❹ 當處理電路1104決定不要利用到影像感測裝置時，便 直接以上述第一座標值來作為指示物6〇2之位置(如步驟sl2〇6 所示）。而當處理電路1104決定要利用到影像感測裝置614時， 便會利用影像感測装置614來感測指示物602及其鏡像，以依據 景> 像感測裝置614所感測到之指示物6〇2及感測到之指示物6〇2 的鏡像，來計算出指示物602之第二座標值，並據以賦予此第二 座標值第二權重(如步驟S1施所示）。然後，處理電路11〇4就 會，據上述之第一座標值、第一權重、第二座標值及第二權重來 計算出指示物602之位置(如步驟sl21〇所示），例如以前述之式 (1)或式(2)所述的方式來進行計算。當然，在步驟si2i〇中， 理電路1104也可以不要依據上述之第一座標值、第一權重、第 =座標值及第二權重來計算出指示物繼之位置，而改成直接以 第一座標值來作為指示物602之位置。 _合制在祕各細祕影像感測裝 構。轉關13 ’此影像感職置13⑻包括有紅外線 IR)照明裝置·、只能讓紅外線通過的紅外_光 ^ 光感測器（ph°t0麵or)1306。其中光感測器1306 置_來取得感測區域的影像，並用_ 子處理電路。此外，紅外線照明裝置1302可以 則可以利用紅外線攄光片（IR_passfllter)來實現广裝置 儘管在前述之實施例中，每一感測系統皆採用了三個發光 13 201030581 兀件’然而就此領域之技術而言，前述每一感測系統只需採用二 個發光元件’就可以實施本發明，再以圖6來進一步說明之。請 參照圖6 ’對於影像感測裝置612而言，其影像感測窗的亮區主 要疋藉由發光元件606所發出的光線，以及反射鏡604所反射的 ，線而，成。而對於影像感測裝置614而言，其影像感測窗的亮 區主要疋藉由發光元件610所發出的光線，以及反射鏡604所反 射的光線而形成。是以，發光元件6〇8可以置換成非發光元件， 例如置換成一般常見的反光元件。此外，藉由上述之說明亦可 ❹知，圖6中的發光元件600、008及010也可以是都置換成反光 元件，或是只有發光元件606及61〇置換成反光元件，只要所置 換的反光元件皆能將光線反射至感測區域618，但都不會形成感 測區域618的鏡像即可。 此外，儘管在前述之實施例中，影像感測裝置612及614 的感測範圍是分別涵蓋感測區域618，然而此領域具有通常知識 者應當知道，在上述這二個影像感測裝置中，只要有一個影像感 測裝置的感測範圍涵蓋全部之感測區域，就可以實施本發明。也 就是說，設計者可將上述二個影像感測裝置區分為一個主要影像 ©感測裝置及-個輔助影像感測裝置，只要主要影像感測裝置的感 測範圍涵蓋全部之感測區域，而輔助影像感測裝置的感測範園能 涵蓋到感測區域中’容易讓主要影像感測裝置感測到單一暗紋的 區域，就能實現本發明。另外，儘管在前述各實施例中，感測區 域618的形狀皆為矩形，然而此領域具有通常知識者亦當知道， 感測區域618的形狀並非限定為矩形，其也可以是其它的形狀， 例如是梯形。 〃 y 根據上述各實施例及上述各說明之教示，可以歸納出二種 基本操作流程，其中一種如圖14所示。圖14為依照本發明一實 201030581 施令'ί之取得指示物之位置的方法，適用於一感測系統。所述感測 系統具有感測區域反射鏡、第一影像感測裝置及第二影像感測裝 置。反射鏡用以形成感測區域之鏡像。第一影像感測裝置及第二 影像感測裝置皆用以感測感測區域之影像’且在上述二個影像感 測裝置中’至少有一影像感測裝置的感測範圍涵蓋全部之感測區 域。所述方法包括下列步驟：首先，依據第一影像感測裝置所感 測到之一指示物及感測到之指示物的鏡像，來計算出指示物之第 一座標值，並據以賦予第一座標值第一權重，以及依據第二影像 Φ 感測裝置所感測到之上述指示物及感測到之指示物的鏡像，來計 算出指不物之第二座標值，並據以賦予第二座標值第二權重(如 步驟S1402所示）。接著，依據第一座標值、第一權重、第二座 才示值及第一權重來計算出指示物之位置(如步驟sl4〇4所示）。 .圖15為依照本發明另一實施例之取得指示物之位置的方 法，適用於一感測系統。所述感測系統具有感測區域、反射鏡、 第-影像感職置及第二影像感測裝置。反射鏡用以形成感測區 域之鏡像。第-景彡像感測裝置及第二影像感職置㈣以感測感 測區域之影像’且在上述二個祕感難置巾，至少有—影像咸 ❹測裝置的感聰圍涵蓋全部之感藝域。所述方法包括下列步 驟·首先’依據第-影像感職置所感綱之—指示物及感測到 之才曰不物的鏡像’來計算出指示物之第—座標值，並據以賦予第 ^標值第-權重(如步驟81502所示)。接著，依據第一權重決 =疋否利用第—影像感測裝置來感測上述指示物及指示物的鏡 像’以=計算出指示物之位置(如步驟81504所示）。 值得提的是’計算指示物位置可以採用多種不同的方 ’不侷限於中華民國專利巾請案第G97126G33號所提出 之方法以下將再提出另—種計算方式，然而，由於處理電路如 15 201030581 何利用影像麵裝置職刺之麟，來計算指秘位置的運作 原理，已於前述之申請專利號中說明，因此以下僅就所提方 數學運算式來進行解釋。 ^ ’ 圖16為計算指示物位置的一說明圖。如圖16所示，虛線 1602以下的部分為感測系統的部分實體，而虛線1602以上的部 分則為上述部分實體的鏡像。於圖16中，點Ο、點戽、點a、 點A及點A的座標值’還有直線4、直線A及直線4的直線方 程式，可以用以下所述的方式來分別表示： φ 0'i〇x,〇y) p〇-(x〇,y〇) pi:(Wi) P2:(W2) P3 -(^3^3) 1^： y = mxx + L2：y = m2x + b2The processing circuits ug2 and 1104 are electrically connected to the image sensing I ι_, respectively, and the processing circuits 1102 and 1104 are also electrically connected to each other. The operation mode of the & test system 1_ is illustrated in FIG. And Figure 12, for the sense of 'the system 丨100 one of the operational procedures. Referring to FIG. 11 , the image processing device 612 uses the image sensing device 612 to sense the image ' to calculate according to the indication sensed by the image sensing device 012 and the mirror image of the detected indicator 6 〇 2 . The 12th 201030581 of the indicator 602 is a target value, and the first weight value is assigned to the first coordinate value (as shown in step sl2〇2). Next, the processing circuit 1104 receives the first coordinate value and the first weight ′ as described above and determines whether to use the image sensing device 614 to sense the indicator 602 and its image according to the first weight (as shown in step S1204). ❹ ❹ When the processing circuit 1104 decides not to use the image sensing device, the first coordinate value is directly used as the position of the pointer 6〇2 (as shown in step sl2〇6). When the processing circuit 1104 decides to use the image sensing device 614, the image sensing device 614 is used to sense the indicator 602 and its image to determine the indicator according to the image sensor 614. 6〇2 and the mirror image of the pointer 6〇2 are sensed to calculate the second coordinate value of the indicator 602, and the second coordinate value is assigned a second weight (as shown in step S1). Then, the processing circuit 11〇4 calculates the position of the pointer 602 according to the first coordinate value, the first weight, the second coordinate value and the second weight (as shown in step s21), for example, in the foregoing The calculation is performed in the manner described in the formula (1) or the formula (2). Of course, in step si2i, the circuit 1104 may not calculate the position of the indicator according to the first coordinate value, the first weight, the second coordinate value, and the second weight, and is changed to directly The coordinate value is taken as the position of the indicator 602. _Consolidated in the secret image sensing structure. Turning off 13 ’ This image sensory 13 (8) includes an infrared IR light illuminator • an infrared _ light sensor (ph°t0 face or) 1306 that allows only infrared rays to pass. The photo sensor 1306 sets the image of the sensing area and uses the _ sub processing circuit. In addition, the infrared illuminating device 1302 can realize the wide device by using an infrared ray film (IR_passfllter). Although in the foregoing embodiments, each sensing system uses three illuminating lights 13 201030581 ' ' However, the technology in this field In the above, each of the foregoing sensing systems can implement the present invention by using only two light-emitting elements, which are further illustrated in FIG. Referring to FIG. 6 ′ for the image sensing device 612, the bright region of the image sensing window is mainly formed by the light emitted by the light-emitting element 606 and the line reflected by the mirror 604. For the image sensing device 614, the bright region of the image sensing window is mainly formed by the light emitted by the light emitting element 610 and the light reflected by the mirror 604. Therefore, the light-emitting element 6〇8 can be replaced with a non-light-emitting element, for example, replaced with a generally common retroreflective element. In addition, it is also apparent from the above description that the light-emitting elements 600, 008, and 010 in FIG. 6 may be replaced with reflective elements, or only the light-emitting elements 606 and 61 may be replaced with reflective elements, as long as they are replaced. The retroreflective elements are capable of reflecting light to the sensing region 618, but none of them form a mirror image of the sensing region 618. In addition, although in the foregoing embodiments, the sensing ranges of the image sensing devices 612 and 614 respectively cover the sensing region 618, those skilled in the art should know that in the above two image sensing devices, The present invention can be implemented as long as the sensing range of one image sensing device covers all of the sensing regions. In other words, the designer can distinguish the two image sensing devices into one main image sensing device and one auxiliary image sensing device, as long as the sensing range of the main image sensing device covers all the sensing regions. The invention can be implemented by sensing the sensing image of the auxiliary image sensing device to cover an area in the sensing area that is easy for the main image sensing device to sense a single dark line. In addition, although in the foregoing embodiments, the shape of the sensing region 618 is rectangular, it is also known to those skilled in the art that the shape of the sensing region 618 is not limited to a rectangle, and may be other shapes. For example, a trapezoid. y y According to the above embodiments and the teachings of the above descriptions, two basic operational procedures can be summarized, one of which is shown in FIG. Figure 14 is a diagram of a method for obtaining the position of an indicator according to the present invention 201030581, which is applicable to a sensing system. The sensing system has a sensing area mirror, a first image sensing device, and a second image sensing device. The mirror is used to form a mirror image of the sensing area. The first image sensing device and the second image sensing device are both configured to sense the image of the sensing region and in the two image sensing devices, at least one sensing device of the image sensing device covers all sensing region. The method includes the following steps: first, calculating a first coordinate value of the indicator according to the image of one of the indicator and the sensed indicator sensed by the first image sensing device, and assigning the first The first weight of the coordinate value, and the second coordinate value of the pointing object is calculated according to the image of the indicator and the sensed indicator sensed by the second image Φ sensing device, and the second coordinate value is assigned The coordinate value is second weighted (as shown in step S1402). Then, the position of the pointer is calculated according to the first coordinate value, the first weight, the second seat value, and the first weight (as shown in step sl4〇4). Figure 15 is a diagram of a method of obtaining the position of an indicator in accordance with another embodiment of the present invention, which is suitable for use in a sensing system. The sensing system has a sensing area, a mirror, a first image sensing device, and a second image sensing device. The mirror is used to form a mirror image of the sensing area. The first-view image sensing device and the second image sensory device (4) to sense the image of the sensing area' and in the above two secret senses, at least the image salty measuring device covers all The sense of art domain. The method includes the following steps: firstly, according to the sense of the first-image sensory sense--the indicator and the mirror image of the sensed object, the first coordinate value of the indicator is calculated and given ^The value is the first-weight (as shown in step 81502). Then, based on the first weight decision = whether the first image sensing device is used to sense the mirror of the indicator and the indicator to calculate the position of the pointer (as shown in step 81504). It is worth mentioning that 'the calculation of the position of the indicator can be used in a variety of different ways' is not limited to the method proposed by the Republic of China Patent No. G97126G33. The following calculation method will be proposed, however, due to the processing circuit such as 15 201030581 The operation principle of calculating the position of the fingertip is explained by the use of the image surface device, and the following is only explained in the above-mentioned mathematical expression. ^ ' Figure 16 is an explanatory diagram for calculating the position of the pointer. As shown in Fig. 16, the portion below the dashed line 1602 is a partial entity of the sensing system, and the portion above the dashed line 1602 is a mirror image of the partial entity. In Fig. 16, the coordinate values of the point Ο, the point 戽, the point a, the point A, and the point A', and the straight line equation of the straight line 4, the straight line A, and the straight line 4, can be expressed by the following methods: φ 0 'i〇x,〇y) p〇-(x〇,y〇) pi:(Wi) P2:(W2) P3 -(^3^3) 1^: y = mxx + L2:y = m2x + b2
Zq ： y =所3太屮&3 ，而上述之叫、m2、州3、όι、h及h又可用以下所述的方式來 分別表示： mx = 所2 = yi ~°y, Χχ -°χ Χ2 -°Χ = —tn2 bi~yl— ηίγΧχ 201030581 ^2~ yi~ ^2Χ2 △3 =少3 ~ ，因此，點巧之％及凡的值可以用以下所述的方式分別來表示： x〇=-^L· m\ ~-/W3 y〇=m3x〇+i,3 φ ❹ 綜上所述，本發明乃是將二個影像感測裝置設置於感測區 域的二個不同肖落，並细這二個影像感财置所取得的影像， 來分別計算出指示物之二筆座標值。在取得上述二筆座標值後， 便對應於影«測裝置的紐位置喊予這二筆座標值不同的 權重:藉以權衡這二筆座標值的重要程度(㈣確程度）。因此， ’、要此適S地賦予權重’那麼不管指示物位於感測區域的哪個位 置，都可進行指稀位置之計算，並鎌精確地計算丨指示物之 ϊΐΐ進—步Ϊ，本發明也可先利用其中—影像感測裝置所取得 ϋίϊ ’來計异出指示物之座標值，並先對應於此影像感測裝置 位置而賦予這筆座標值—權重，藉以權衡這筆座標值的重 決定是否需要_到另—個影像感測裝 以#算㈣—筆具有更高準雜度的座標值。 ί^ΐ，只魏適當地舒權重，那麼不管指示物位於感測區 笪1置’也都可進行指示物位置H並能較精確地計 异出指不物之位置。 太恭Γ、本發明6以較佳實施例揭露如上，然其並卵以限定 ^^此任何熟習此技藝者，在不脫離本發明之精神和範圍内， ===:因此本發明之保護範圍當視後附之申 17 201030581 【圖式簡單說明】 圖1為習知之一種感測系統的立體圖。 圖2為感測系統1〇〇之操作方式的說明圖。 圖3為圖2之影像感測裝置11〇所感測到之影像的示意圖。 圖4為感測系統1〇〇的另一操作說明。 圖5為圖4之影像感測裝置110所感測到之影像的示意圖。 圖6為依照本發明一實施例之感測系統的示意圖。 圖7為感測系統6〇〇之操作方式的說明圖。 ❿ 圖8用以說明賦予第一權重的其中一種方式。 圖9用以說明賦予第二權重的其中一種方式。 圖10為依照本發明另一實施例之感測系統的示意圖。 圖11為依照本發明再一實施例之感測系統的示意圖。 圖12為感測系統丨100的其中一種操作流程。 圖13繪示一種適合運用在感測系統中之影像感測裝置架 構。 圖14為依照本發明一實施例之取得指示物之位置的方法。 圖15為依照本發明另一實施例之取得指示物之位置的方 〇 法。 圖16為計算指示物位置的一說明圖。 【主要元件符號說明】 100、600、1000、11〇〇 :感測系統 102、602 :指示物 104、604 :反射鏡 106、108 :反光元件 606、608、610 :發光元件 110、612、614、1300 :影像感測裝置 201030581 112、616、ll〇2、1104 :處理電路 114 :平面 116、618 :感測區域 118、620 :鏡面 192 :邊界 202、702、1602 :虛線 :感蜊路線 204、206、402、404、704、706、708、710Zq : y = 3 is too 屮 & 3, and the above, m2, state 3, όι, h, and h can be expressed in the following ways: mx = 2 = yi ~ °y, Χχ - °χ Χ2 -°Χ = —tn2 bi~yl— ηίγΧχ 201030581 ^2~ yi~ ^2Χ2 △3 = less 3 ~ , therefore, the % of the point and the value of the point can be expressed in the following ways: X〇=-^L· m\ ~-/W3 y〇=m3x〇+i,3 φ ❹ In summary, the present invention is to provide two image sensing devices in two different sensing regions. Drop and fine-tune the images obtained by the two images to calculate the two coordinates of the indicator. After obtaining the above two coordinates, the weight corresponding to the two coordinates of the camera is called: the importance of weighing the two coordinates ((4) the degree of accuracy). Therefore, 'the weight is given to the right', then regardless of the position of the indicator in the sensing area, the calculation of the thinning position can be performed, and the advancement of the target is accurately calculated, the present invention It is also possible to use the image sensor device to obtain the coordinate value of the indicator, and first assign the coordinate value to the position of the image sensing device, thereby weighting the coordinate value. Re-determine whether it is necessary to _ to another image sensing device to calculate (four) - the pen has a higher standard value of the coordinate. ί^ΐ, only Wei properly weights the weight, then the indicator position H can be performed regardless of whether the indicator is located in the sensing area 笪1, and the position of the object can be accurately distinguished. To the extent that the present invention is disclosed in the above preferred embodiments, the invention is not limited to the spirit and scope of the invention, and the invention is protected. Scope is attached to the application of Shen 17 201030581 [Simplified illustration of the drawings] Figure 1 is a perspective view of a conventional sensing system. FIG. 2 is an explanatory diagram of the operation mode of the sensing system 1〇〇. FIG. 3 is a schematic diagram of an image sensed by the image sensing device 11 of FIG. 2. 4 is another operational description of the sensing system 1〇〇. FIG. 5 is a schematic diagram of an image sensed by the image sensing device 110 of FIG. 4. 6 is a schematic diagram of a sensing system in accordance with an embodiment of the present invention. Fig. 7 is an explanatory diagram of the operation mode of the sensing system 6'. ❿ Figure 8 is used to illustrate one of the ways to assign the first weight. Figure 9 is a diagram for explaining one of the ways of giving the second weight. 10 is a schematic diagram of a sensing system in accordance with another embodiment of the present invention. 11 is a schematic diagram of a sensing system in accordance with yet another embodiment of the present invention. FIG. 12 is one of the operational flows of the sensing system 100. Figure 13 illustrates an image sensing device architecture suitable for use in a sensing system. 14 is a diagram of a method of obtaining the position of an indicator in accordance with an embodiment of the present invention. Figure 15 is a diagram showing a method of obtaining the position of an indicator in accordance with another embodiment of the present invention. Fig. 16 is an explanatory diagram for calculating the position of the pointer. [Description of main component symbols] 100, 600, 1000, 11〇〇: sensing system 102, 602: indicators 104, 604: mirrors 106, 108: reflective elements 606, 608, 610: light-emitting elements 110, 612, 614 1300: image sensing device 201030581 112, 616, ll 〇 2, 1104: processing circuit 114: plane 116, 618: sensing region 118, 620: mirror 192: boundary 202, 702, 1602: dashed line: sensation route 204 , 206, 402, 404, 704, 706, 708, 710
300 ··影像感測窗 302 :亮區 304、306、502 :暗紋 1002、1004、1006 :子處理電路 1302 :紅外線照明裝置 1304 :紅外線濾光裝置 1306 :光感測器 102’、106’、108’、110’、116’、602’、606’、608’、610,、 612’、614’、618’ ：鏡像 A、B、C、D、E、F、Ο、P0、P〇 ,、I]、P2、P3 :點 Lj、A、:直線 S1202、S1204、S1206、S1208、S1210、S1402、S1404、 S1502、S1504 :步驟 19300 · Image sensing window 302: Bright areas 304, 306, 502: Dark lines 1002, 1004, 1006: Sub-processing circuit 1302: Infrared illumination device 1304: Infrared filter device 1306: Light sensors 102', 106' , 108', 110', 116', 602', 606', 608', 610, 612', 614', 618': mirroring A, B, C, D, E, F, Ο, P0, P〇 , I], P2, P3: point Lj, A, line S1202, S1204, S1206, S1208, S1210, S1402, S1404, S1502, S1504: Step 19