200825876 九、發明說明： _ 【發明所屬之技術領域】 _ 本發明係有關於一種光點偵測系統及其偵測方法，尤 指一種特殊設計之光學干涉元件將可見光背景濾除以增加 光點對比，搭配自動影像範圍校正，衍生出高效能的光點 追跡技術；此外，利用偵測裝置視野大於投影範圍之特色 引入外圍選單，提供不干擾投影晝面之人性化操作介面， ρ· 本系統具有高精準度位置定位、光點快速追縱辦識、不受 環境光線干擾等優勢，適於會議簡報、互動教學、遊戲娛 樂及行動影音應用及製造等相關領域。 【先前技術】 按，雷射光被廣泛應用於各種領域、裝置，例如演唱 會或娛樂裝飾用之雷射光束、眼科醫療手術、光纖通訊、 雷射切割、條碼讀取、雷射測量等等，由於雷射光具有低 、 散發性之特點，因此可應用於高準確性的定位輸入上。 於簡報系統中，利用遠端光點控制滑鼠游標是近來的 發展趨勢，然而，因為操控是以高亮度的光點作為依據， 當簡報晝面背景亮度過高，或環境中有其他光源干擾時， 則會影響系統對光點的判讀，造成游標控制上的不穩定。 為克服前述干擾、提升雷射光點偵測效果，美國發明 專利第 5504501 號「Optical I叩ut Arrangement And Method Of Using Same」，提出利用可引入特定波段之濾光 片之技術手段，其係採甩對應紅光雷射光源之窄帶濾光片 6 200825876 濾除紅光雷射之外之環境或背景可見光，用以增進系統對 雷射光點之判別，此方法雖可大幅度消除其他波段之背景 光貢獻，然而，該案技術係針對紅光光點偵測，換言之， 對於目前逐漸普及與紅外光波長不同之藍光、綠光，甚至 是紅外線的光點控制輸入均不適用。且該案的濾光片性質 並非是針對於要搭配到軟體運算的光點判讀上專用，這會 導致某些相容性的問題，譬如說在投影影像範圍的校正 上，該案的濾光片就無法確保是否光靠帶通區間的透光就 能滿足軟體判讀上的資訊需求。 【發明内容】 為了建構一套專屬於簡報場合使用的遠端遙控系統， 本發明之主要目的在於提出一種光點偵測系統及其偵測方 法，其特徵在於特殊的干涉元件及影像處理過程；本案之 干涉元件在將背景濾除以增加光點對比之同時，更允許不 足以影響對比效果之可見光透過，使系統可獲得校準必要 之影像資訊；本案之影像處理過程包含有投影晝面校正及 動態光點判讀功能，讓使用者可以藉由雷射光筆完成對投 影晝面的操控。 本發明之次要目的在於提出一種光點偵測系統及其偵 測方法，利用偵測裝置視野大於投影範圍之特色引入影像 外圍選單，提供不會干擾投影晝面之人性化操作介面，可 為操作介面的進步性。 為達到上述目的，本發明提出一種紅外光點偵測系 統，其包含： 7 200825876 一光源裝置，係用以投射出不可見光； 一偵測裝置，係用以偵測影像，並可產生影像訊號； 一干涉元件，係用以限制該偵測裝置所能接收之光學 波段，容許波長大於760nm之紅外光通過。 較佳的是，該干涉元件係可容許一定穿透率之可見光 通過。 較佳的是，該穿透率不高於10%。 較佳的是，該干涉元件係設置於該偵測裝置之影像偵 測端。 較佳的是，該干涉元件為一滤光膜，該遽光膜係由物 理氣象沉積方式製成。 較佳的是，該物理氣象沉積方式係為離子輔助蒸鍍技 術。 較佳的是，該滤光膜係以玻璃或塑膠為基板，以折射 率互異之材料交互堆疊而成。 較佳的是，該折射率互異之材料係為Ti02(二氧化鈦） 與Si02(二氧化矽）。 較佳的是，其更包括一電腦系統，係用以接收該偵測 裝置所產生之影像訊號，並可進行運算。 較佳的是，該光源裝置係為紅外光發射裝置，係用以 投射出紅外光點。 較佳的是，其更包括一投影裝置，該投影裝置係用以 投影一晝面以供該偵測裝置偵測該投影晝面影像。 較佳的是，其更包括一選單區域，該選單區域係設置 8 200825876 於該投影畫面外圍一定範圍内。 較佳的是’該偵測裝置之偵測範 及該選單區域。 仍^又〜旦向 較佳的是，該干涉元件係設置於—座體上 可拆卸地與該偵測裝置組裝。 "丄篮係 較佳的是，該價測裝置係為一攝影機或照相機。 光之述目的’本發明更提出-種適用於藍光與青 先之波長區&之光點偵測系統，其包含·· 光源裝置’係用以投射出位於藍光與青光之波段間 之光點 ’裝置’係用以偵測影像’並可產生影像訊號； 波段了干涉70件’係用以限制該偵測裝置所能接收之光學 門草較ί ΐί ’軒涉元件係容許波長介於43G〜彻nm之 間某一 4寸疋波段之光波通過。 較佳的是’軒涉元件料通敎特定波段 冋見小於20nm 〇 丁 較佳的是’該干涉元件係可容許—定穿透率之可 光波波段以外之可見光波通過。 統，==述目的’本發明更提出—種綠光點偵測系 一光源裝置，係用以投射出綠光； 一偵魏置，係用以仙影像，並可產生影像訊號； 干元件，係用以限制該偵測裝置所能接收之光學 200825876 波段。 較佳的是，該干涉元件係容許波長介於490〜570nm之 間某一特定波段之光波通過。 較佳的是，該干涉元件容許通過之特定綠光波段之通 帶半高寬小於20nm。 較佳的是，該干涉元件係可容許一定穿透率之可穿透 光波波段以外之可見光波通過。 為達到上述目的，本發明更提出一種適用於橙光與紅 光之波長區段之光點偵測系統，其包含： 一光源裝置，係用以投射出位於橙光與紅光之波段間 之光點； 一偵測裝置，係用以偵測影像，並可產生影像訊號； 一干涉元件，係用以限制該偵測裝置所能接收之光學 波段。 較佳的是，該干涉元件係容許波長介於590〜7 60nm之 間某一特定波段之光波通過。 較佳的是，該干涉元件容許通過之特定紅光波段之通 帶半高寬小於20nm。 較佳的是，該干涉元件係可容許一定穿透率之可穿透 光波波段以外之可見光波通過。 為達到上述目的，本發明更提出一種紫光點偵測系 統，其包含： 一光源裝置，係用以投射出紫光點； 一偵測裝置，係用以偵測影像，並可產生影像訊號； 10 200825876 干涉元件’係用以限制該偵測裝置所能接收之光學 波段。 之 較’該干涉元件係容許波長介於38〇〜逢m 間某一特定波段之光波通過。 帶半干涉元件容許通過之特定紫光波段之通 較佳的是’該干涉元件係可容許-定穿透率之可穿透 光波波段以外之可見級通過。（牙料之了牙透 其包=達到上述目的’本發明更提出一種光點偵測方法， (a)由—光源裝置投射—絲至-投影畫面上； 涉元制元壯件設置於—偵測裝置之偵測端，由該干 y 〈 1 ㈣置所能接收之it學波段與強度； 光晝㈣，賴制裝置擷取該曝 進行腦系繼該制裝置產生之影像訊號並 光。纟疋17亥步驟⑷中’該光源裝置係可投射出紅外 至红=L”r(a)中’該光源裝咖 等可之―監^^^ _====係容許波長大於 、 立4干涉兀件係可容許穿透率不 200825876 高於10%之可見光通過。 較佳的是，該步驟（b)中，該干涉元件係容許波長位於 藍光至青光之間（430〜490nm)某一特定波段之光波通過，該 波段之通帶半高寬小於20nm，且該干涉元件係可容許穿透 率不高於10%之可穿透光波波段以外之可見光波通過。 較佳的是，該步驟（b)中，該干涉元件係容許波長位於 綠光範圍内（490〜570nm)某一特定波段之光波通過，該波段 之通帶半高寬小於20nm，且該干涉元件係可容許穿透率不 高於10%之可穿透光波波段以外之可見光波通過。 較佳的是，該步驟（b)中，該干涉元件係容許波長位於 橙光至紅光之間（590〜760nm)某一特定波段之光波通過該 波段之通帶半高寬小於20nm，且該干涉元件係可容許穿透 率不高於10%之可穿透光波波段以外之可見光波通過。 較佳的是，該步驟（b)中，該干涉元件係容許波長位於 紫光範圍内（380〜430nm)某一特定波段之光波通過，該波段 之通帶半高寬小於20nm，且該干涉元件係可容許穿透率不 高於10%之可穿透光波波段以外之可見光波通過。 較佳的是，該步驟（a)中，該投影晝面外圍一定範圍内 設有一選單區域； 該步驟（c)中，該偵測裝置之偵測範圍係包括該投影晝 面及該選單區域。 較佳的是，該步驟（a)後更包括一投影畫面校正程序， 用以校正投影畫面範圍。 較佳的是，該投影晝面校正程序係包括： 12 200825876 (a)投影〜棋盤格影像； 影像，並產生影像訊 (b)由一偵測裝置擷取該棋盤格 號； (C)由一電腦系統接收該影像訊號並進行分析處理； (<1)由5亥電腦系統運算並得出複數棋盤格座標值； ⑹由該電腦系統比對該複數棋盤格座 設定座標值。 疋6付口 ，該步驟⑹，糾對該複數棋盤格座標值不 付。5又疋座軚值，則重複該步驟（a)〜（e)。 較佳的是，該㈣（e)，若崎輯數 符合設定座魏，且纽重賴正讀料，替止不 較佳的是，該步驟⑹更包括一判斷步驟，判斷該偵測 衣置是否成功擷取該棋盤格影像。 、 較佳的是’若判斷成功擷取該棋盤格影像，則中斷該 \ 影’並中斷該偵測裝置擷取影像；若判斷： 取及棋盤格影像失敗，則停止校正。 為達到上述㈣’本發明更提出一種不可見光點之追 蹤方法，其包括： (a) 由一偵測裝置擷取一第一晝面； (b) 由該偵測裝置擷取一第二晝面； (c) 將該第一畫面與該第二畫面比對並得出一差分影 (d)排序求得差分影像亮度最大值位置之該偵測裝 影像座標； 、 ^ 200825876 (e) 比較該亮度最大值是否大於一門;f監值； 亀 (f) 若否’則重複步驟（a)〜（e);若是，則繼續以下步 驟； / (g) 將亮度最大值位置座標轉換為螢幕座標。 較佳的是，該步驟（a)及（b)所擷取之晝面係儲存於一 暫存記憶體中，再於該暫存記憶體中進行步驟（c)比對得 差分影像。 寸 C： 較佳的是，該步驟（g)後更包括一判斷步驟，判斷該螢 幕座標是否位於選單區域，若是，則執行該螢幕座所 選單位置之功能。 " 為使貴審查委員對於本發明之結構目的和功效有更 進一步之了解與認同，茲配合圖示詳細說明如后。 【實施方式】 ί 以下將參照隨附之圖式來描述本發明為達成目的所使 用的技術手段與功效’而以下圖式所縣 助說明，以利貴審杳委員睁解1j僅為輔 於所列舉圖式。 ㈣c“之技術手段並不限 光點示’本發明之較佳實施架構示意圖，該 點m、i於太 用以偵測一光源裝置11所投射出之光 點之發射裝，該光源裝置11係為—可投射出光 、 ^光點ill係為所投射出之光點。 將1笔月_糸統16連接一招*寻〈_罢1 q〈、s a 置13為—投補心“衣置13(通常’該投影裝 杈办祙）’糟由該電腦系統16將影像傳輸至該投 200825876 =裝置13，即可由該投影裝置13投射出一畫面12，於該 投1晝面12外圍一定範圍内設有一觸發式選單區域丨21， 忒砥單區域121係由該電腦系統16之程式所提供，具 能選項，其作用將說明於後。、 士其-人，a亥電腦系統16連接於一偵測裝置，該偵測 H 14係用以偵測並擷取影像並可產生影像訊號，其偵測 ，圍包括該投影晝面12及該選單區域121，通常，該偵測 裝置14係為一攝影機，亦可為照相機或其他影像操取裝 將其所產生之影像訊號傳送至該電腦系統16，由該電 腦系統16針對該影像訊號進行分析運算。 Λ % 再者，於該偵測裝置14之影像偵測端設有一干涉元件 15’該干涉元件15係用以限制該偵測裝置14所能接收之 光學波段’並可容許-定穿透率之可見光通過，為達到此 目的’該干涉元件15係為濾、光膜’干涉元件15之滅光膜 ，計係允許同於光源裝置u發射波長之光波通過而“濾除 ，、他波段光線H為搭配軟體進行 ，影像之校正需求，該干涉元件15仍容許—穿透率 ^之其他波段背景光波通過。該干涉元件15之設計係藉 =向低折射率材料以四分之一波方式交互堆疊，配合優化 处理，將濾光特性調整至所要之需求。 根據光源種類不同，該干涉元件15可有不同之設 例如： 田。亥光源裝置11投射的是紅外光點時，該干涉元件 15係為-長波通截止濾光片，其濾除可見光而容許波 長約大於760 nm的紅外光通過，但，其在可見光仍保 200825876 有穿透率不高於10%的透射峰，設計示意圖如圖二。 二、 當該光源裝置11投射的是473nm附近的藍光點時，， 干涉元件15係為一窄帶濾光片，容許波長範圍（半高 寬）不超出463〜483 rnn(亦即通帶半高寬小於2〇nm) = 光波通過’且在其他可見光波段的非帶通區間有穿透 率不高於1〇°/◦的透射峰，設計示意圖如圖三。 三、 當該光源I置11投射的是5 3 2 nm附近的光點時，今 干涉元件15係為一窄帶滤光片，容許波長範圍（半* 寬）不超出522〜542 nm(亦即通帶半尚寬小於2〇nm)的 光波通過’且在其他可見光波段的非帶通區間有穿透 率不高於10%的透射峰，設計示意圖如圖四。 四、 當該光源裝置Η投射的是650 nm附近的光點時，兮 干涉元件15係為一窄帶濾光片，容許波長範圍（半高 寬）不超出640〜660 nm(亦即通帶半高寬小於2〇nm) = 光波通過’且在其他可見光波段的非帶通區間有穿、秀 率不高於1 〇%的透射峰，設計示意圖如圖五。 五、 當該光源裝置11投射的是405 nm附近的光點時，9 干涉元件15係為一窄帶濾光片，容許波長範圍（半^ 見）不超出395〜415 nm(亦即通帶半南寬小於^ 光波通過，且在其他可見光波段的非帶通區間有穿透 率不高於10%的透射峰，設計示意圖如圖六。 針對所設計的濾光膜，本案採用離子束輔助幕贫 ，行濾光膜鍍製，以玻璃或塑膠為基板，Ti〇2(二氧化 與Si〇2(二氧化矽）為交互堆疊的高低折射率材料，輔助離 子為氩離子（Ar+)及氧離子（〇2+)，離子辅助可增加犋層= 16 200825876 密性，且氧離子可作為化學計量之補償。 據上所述本發明之架構及設計，以下為一干涉元件15 使用效能之實施例，該實施例之干涉元件丨5係針對紅外光 點的控制輸入；依據允許波長約大於76〇nm之紅外光通 過’並可容許穿透率不高於10%之可見光通過之規格需求， 依上述製作方式實際製作濾光膜樣品，使用光譜儀（hitach Spectrophotometer U-3210)測量其光穿透率，可得波長與 穿透率關係曲線圖如圖七所示，根據量測結果，通帶區A1 與截止帶區A2之邊界區B1約在波長730〜750nm範圍内， 緊接在邊界區之後的通帶區A1之第一個帶通峰位於760 nm，通帶區A1的平均穿透率約為87·3 %，此數值相對於 該截止帶區Α2而§，可造成影像擷取後極大之強度對比； 再者，於該截止帶區Α2波長414、450、494、526及646nm 處引入漏光處L1〜L5 ’容許一定穿透率之可見光通過，其 穿透率皆低於1’可合理地忽略這幾處漏光於光點辨識 時對效能造成之影響，备實際驗證，如圖八A所示，將該 干涉元件I5裝設於該偵測裝置14上，由該偵測裝置14擷 取僅投射雷射光點之白色屏幕的瞬間曝光（約1/100秒）影 像，由於該干涉元件15僅容許波長大於760腿之紅外光通 過，因此<捕捉到強烈地對比之光點影像；反之，如圖八 B所示，若不使用該干涉元件15,則背景亮度與該光點in 相互干擾，使得該光點無法被突顯。 如圖/所示’由於該干涉元件15係設置於偵測裝置 14之影像偵測端’而該偵測裝置14通常係為一攝影機， 因此，如_九所示’可將該干涉元件15(亦即濾光膜）設置 200825876 於座體151上，該座於後0 側辟-右…鉍π 丑 係王現一中空圓筒狀，其内 置52，可於該偵測裝置14之鏡頭⑷設 合，使7+之Γ槽142，藉由該凸緣152與凹槽142相互嵌 裝置14柏Η # 曰由以庄體151可拆卸地與該偵測 件15 Ή 6 ί衣’欲進彳了光點U1 _時，可將該干涉元 二 測裝置14上，反之，則可快速取下，200825876 IX. Description of the invention: _ [Technical field of invention] _ The present invention relates to a light spot detection system and a detection method thereof, and more particularly to a specially designed optical interference element for filtering a visible light background to increase a light spot Contrast, with automatic image range correction, derived high-performance spot tracking technology; in addition, using the detection device field of view larger than the projection range to introduce the peripheral menu, providing a user-friendly interface that does not interfere with the projection surface, ρ· this system With high-precision position positioning, fast spot tracking, and no interference from ambient light, it is suitable for conference presentations, interactive teaching, game entertainment and mobile audio and video applications and manufacturing. [Prior Art] Laser light is widely used in various fields and devices, such as laser beams for concerts or entertainment decoration, ophthalmic medical surgery, fiber optic communication, laser cutting, bar code reading, laser measurement, etc. Due to its low and sporadic nature, laser light can be applied to highly accurate positioning inputs. In the briefing system, using the remote spot to control the mouse cursor is a recent trend. However, because the control is based on the high-brightness spot, when the background brightness of the presentation is too high, or other light sources in the environment interfere. When it is, it will affect the system's interpretation of the light spot, resulting in instability in the cursor control. In order to overcome the aforementioned interference and improve the detection of the laser spot, U.S. Patent No. 5,504,501 "Optical I叩ut Arrangement And Method Of Using Same" proposes a technique for using a filter capable of introducing a specific band. Narrowband filter 6 corresponding to red laser light source 200825876 Filters out the environment or background visible light other than red laser to enhance the system's discrimination of laser spot. This method can greatly eliminate the background light of other bands. Contribute, however, the technology of this case is for red light spot detection, in other words, it is not suitable for the light spot control input that is gradually popularized with blue light, green light or even infrared light with different infrared light wavelengths. Moreover, the filter properties of the case are not specific to the interpretation of the spot to be matched to the software operation, which leads to some compatibility problems, such as the correction of the projection image range, the filter of the case. It is impossible to ensure that the light transmission in the band pass interval can meet the information needs of the software interpretation. SUMMARY OF THE INVENTION In order to construct a remote control system for use in a briefing occasion, the main object of the present invention is to provide a light spot detection system and a detection method thereof, which are characterized by special interference components and image processing processes; The interference component of the present invention filters the background to increase the contrast of the light spot, and allows the visible light transmission which is insufficient to affect the contrast effect, so that the system can obtain the image information necessary for calibration; the image processing process of the present case includes the projection surface correction and The dynamic spot interpretation function allows the user to perform the manipulation of the projection surface by means of a laser pointer. A secondary object of the present invention is to provide a light spot detection system and a detection method thereof, which introduces an image peripheral menu by using a feature that the detection device has a larger field of view than the projection range, and provides a humanized operation interface that does not interfere with the projection surface. The advancement of the operational interface. In order to achieve the above object, the present invention provides an infrared spot detection system, comprising: 7 200825876 a light source device for projecting invisible light; a detecting device for detecting images and generating image signals An interference element is used to limit the optical band that the detecting device can receive, and allows infrared light having a wavelength greater than 760 nm to pass. Preferably, the interference element is adapted to allow visible light of a certain transmittance to pass. Preferably, the penetration rate is not higher than 10%. Preferably, the interference component is disposed at an image detecting end of the detecting device. Preferably, the interference element is a filter film made by a physical weather deposition method. Preferably, the physical weather deposition method is an ion assisted evaporation technique. Preferably, the filter film is made of glass or plastic as a substrate and is alternately stacked with materials having different refractive indices. Preferably, the materials having different refractive indices are TiO 2 (titanium dioxide) and SiO 2 (cerium oxide). Preferably, the method further comprises a computer system for receiving an image signal generated by the detecting device and performing an operation. Preferably, the light source device is an infrared light emitting device for projecting infrared light spots. Preferably, it further comprises a projection device for projecting a face for the detecting device to detect the projected face image. Preferably, it further includes a menu area, the menu area setting 8 200825876 is within a certain range of the periphery of the projection screen. Preferably, the detection means of the detecting means and the menu area are. Preferably, the interference element is disposed on the body to be detachably assembled with the detecting device. "丄篮系 Preferably, the price measuring device is a camera or a camera. The purpose of the light is as follows: The present invention further proposes a light spot detecting system suitable for the wavelength region & blue light and blue light, which includes a light source device for projecting between the bands of blue light and blue light. The light spot 'device' is used to detect the image 'and can generate image signals; the band interference 70 pieces' is used to limit the optical door grass that the detection device can receive. A light wave passing through a 4 inch 疋 band between 43G and nmnm passes. Preferably, the component material is passed through a specific wavelength band and is less than 20 nm. Preferably, the interference element is capable of allowing visible light waves other than the wavelength of the visible light wave to pass. System, == description of the purpose of the present invention - a green light point detection system is a light source device for projecting green light; a detection of Wei, used for fairy images, and can generate image signals; It is used to limit the optical 200825876 band that the detection device can receive. Preferably, the interference element allows light waves of a specific wavelength band between 490 and 570 nm to pass. Preferably, the interference element allows the passband half-width of the particular green band to pass through less than 20 nm. Preferably, the interference element is capable of permitting the passage of visible light waves other than the permeable wavelength band of a certain transmittance. In order to achieve the above object, the present invention further provides a light spot detecting system suitable for a wavelength section of orange light and red light, comprising: a light source device for projecting a light spot between the bands of orange light and red light; A detecting device for detecting an image and generating an image signal; an interference component for limiting an optical band that the detecting device can receive. Preferably, the interference element allows light waves of a specific wavelength band between 590 and 7 60 nm to pass. Preferably, the interference element allows the passband half-width of the particular red band to pass through less than 20 nm. Preferably, the interference element is capable of permitting the passage of visible light waves other than the permeable wavelength band of a certain transmittance. In order to achieve the above object, the present invention further provides a purple spot detection system, comprising: a light source device for projecting a purple light spot; a detecting device for detecting an image and generating an image signal; The 200825876 interference element is used to limit the optical band that the detection device can receive. The interference element allows light waves of a specific wavelength band between 38 〇 and m to pass. It is preferred that the half-interfering element is allowed to pass through a particular violet band. The interfering element is capable of permitting the passage of visible levels other than the permeable light wave band of the predetermined transmittance. (The tooth material has its teeth through the bag = to achieve the above purpose.] The present invention further proposes a light spot detecting method, (a) by the light source device projecting the wire to the projection screen; the elementary element is placed on the - The detecting end of the detecting device is configured to receive the band and intensity of the sigma by the dry y < 1 (four); the light 昼 (4), the device is used to extract the image signal generated by the brain system In the step (4) of 纟疋17海, the light source device can project infrared to red = L"r(a), the light source can be installed, etc. - monitoring ^^^ _==== is allowed wavelength is greater than, The vertical interference element can allow visible light to pass through more than 10% of the transmittance of 200825876. Preferably, in the step (b), the interference element is allowed to have a wavelength between blue and blue (430~490nm). A light wave of a specific wavelength band passes through, the passband half width of the band is less than 20 nm, and the interference element can allow visible light waves other than the permeable light wave band having a transmittance of not more than 10% to pass. Yes, in the step (b), the interference element is allowed to have a wavelength in the green light range (490 to 570 nm). The light wave of the fixed band passes, the passband half width of the band is less than 20 nm, and the interference element can allow visible light waves other than the permeable light wave band having a transmittance of not more than 10% to pass. Preferably, the In the step (b), the interference element is such that the wavelength of the light wave of a specific wavelength band between orange light and red light (590 to 760 nm) passing through the band is less than 20 nm, and the interference element is tolerable. Preferably, in the step (b), the interference element is allowed to have a specific wavelength in the violet range (380 to 430 nm), and the transmittance is not higher than 10%. The light wave of the band passes, the passband half width of the band is less than 20 nm, and the interference element can allow visible light waves other than the permeable light wave band having a transmittance of not more than 10% to pass. Preferably, the step In (a), a menu area is disposed in a certain range of the periphery of the projection surface; in the step (c), the detection range of the detecting device includes the projection surface and the menu area. Preferably, the After step (a), a projection picture is further included The calibration program is used to correct the range of the projected image. Preferably, the projection correction program includes: 12 200825876 (a) projection ~ checkerboard image; image, and image generation (b) by a detecting device Taking the checkerboard number; (C) receiving the image signal by a computer system and performing analysis processing; (<1) computing by the 5H computer system and obtaining a plurality of checkerboard coordinates; (6) comparing by the computer system The plurality of checkerboards set the coordinate value. 疋6 pays the mouth, the step (6), corrects the value of the plurality of checkerboard coordinates, and repeats the steps (a) to (e). Yes, the (4)(e), if the number of the Kawasaki series is consistent with the setting of the seat, and the weight is positively read, it is not preferable that the step (6) further includes a determining step to determine whether the detecting device is successful. Capture the checkerboard image. Preferably, if the board image is successfully captured, the image is interrupted and the detecting device is interrupted to capture the image; if it is determined that the image of the checkerboard fails, the correction is stopped. In order to achieve the above (4), the present invention further provides a method for tracking invisible light points, which comprises: (a) capturing a first surface by a detecting device; (b) drawing a second signal from the detecting device (c) comparing the first picture with the second picture and obtaining a difference image (d) sorting to obtain the detected image coordinate position of the maximum position of the difference image brightness; , ^ 200825876 (e) comparison Whether the maximum brightness value is greater than one gate; f monitoring value; 亀 (f) If no ' repeat steps (a) ~ (e); if yes, continue with the following steps; / (g) convert the brightness maximum position coordinate to screen coordinate. Preferably, the buffers captured in steps (a) and (b) are stored in a temporary memory, and step (c) is compared to the differential image in the temporary memory. Inch C: Preferably, after step (g), a judging step is further included to determine whether the screen coordinates are located in the menu area, and if so, the function of selecting the position of the screen seat. " In order to enable your review board to have a better understanding and recognition of the structural purpose and efficacy of the present invention, the detailed description of the figure is as follows. [Embodiment] Hereinafter, the technical means and functions used by the present invention for achieving the purpose will be described with reference to the accompanying drawings, and the following diagrams are used to explain the instructions of the county. List the schema. (4) c "The technical means is not limited to the light point display" is a schematic diagram of a preferred embodiment of the present invention. The point m, i is used to detect the light spot of the light source device 11 projected by the light source device 11, the light source device 11 The system is - can project light, ^ light point ill is the projected light spot. 1 month _ 糸 16 connected to a stroke * seeking < _ stop 1 q <, sa set 13 for - tonic heart Setting 13 (usually 'the projection device') is transmitted by the computer system 16 to the projection 200825876 = device 13, and a projection 12 can be projected by the projection device 13 on the periphery of the projection 12 A triggering menu area 丨21 is provided within a certain range, and the 忒砥 single area 121 is provided by the program of the computer system 16, and has an option, and its function will be described later. The singularity of the computer system 16 is connected to a detection device. The detection H 14 is used to detect and capture images and generate image signals. The detection includes the projection surface 12 and In the menu area 121, the detecting device 14 is generally a camera, and the camera or other image processing device can transmit the image signal generated by the camera to the computer system 16, and the computer system 16 targets the image signal. Perform analytical operations. Λ % Further, an interference component 15 ′ is disposed on the image detecting end of the detecting device 14 to limit the optical band that the detecting device 14 can receive and allow for a predetermined transmittance. The visible light passes through, and the interference element 15 is a light-extinguishing film of the filter, the optical film' interference element 15. The meter allows the light wave of the wavelength emitted by the light source device u to pass through and filter out H is performed with the software, and the image is corrected. The interference element 15 still allows the other wavelengths of the background light wave to pass through. The design of the interference element 15 is a quarter wave method to the low refractive index material. The stacking is performed alternately with the optimization process to adjust the filter characteristics to the required requirements. Depending on the type of the light source, the interference element 15 can have different settings, for example: When the light source device 11 projects an infrared spot, the interference element The 15 series is a long-wavelength cut-off filter that filters out visible light and allows infrared light with a wavelength of about 760 nm to pass through. However, it still has a transmission peak with a transmittance of not more than 10% in visible light in 200825876. The schematic diagram is shown in Figure 2. 2. When the light source device 11 projects a blue light spot near 473 nm, the interference element 15 is a narrow band filter, and the allowable wavelength range (half height and width) does not exceed 463 to 483 rnn ( That is, the passband has a half-height width of less than 2〇nm) = the light wave passes through and the transmission peak of the non-bandpass interval in other visible light bands has a transmittance of not higher than 1〇°/◦, and the design schematic is shown in Figure 3. When the light source I is set to 11 to project a light spot near 5 3 2 nm, the interference element 15 is a narrow band filter, and the allowable wavelength range (half * width) does not exceed 522 to 542 nm (that is, the pass band). The light wave with a half width less than 2〇nm) passes through the transmission band with a transmittance of not more than 10% in the non-bandpass interval of other visible light bands. The design diagram is shown in Figure 4. 4. When the light source device is projected When the light spot is near 650 nm, the chirped interference element 15 is a narrow-band filter, and the allowable wavelength range (half-height width) does not exceed 640~660 nm (that is, the passband half-height width is less than 2〇nm) = light wave Through and in the non-bandpass interval of other visible light bands, the wear rate is not higher than 1%. The peak, the design schematic is shown in Figure 5. 5. When the light source device 11 projects a light spot near 405 nm, the 9 interfering element 15 is a narrow band filter, and the allowable wavelength range (half) does not exceed 395~ 415 nm (that is, the passband half-south width is less than ^ light wave passing, and the non-bandpass interval in other visible light bands has a transmission peak with a transmittance of not more than 10%. The design schematic is shown in Fig. 6. For the designed filter Membrane, this case uses ion beam assisted screen depletion, plating filter film, glass or plastic as substrate, Ti〇2 (dioxide and Si〇2 (ceria) as alternating high and low refractive index materials, auxiliary ions For argon ions (Ar+) and oxygen ions (〇2+), ion assist can increase the 犋 layer = 16 200825876 tightness, and oxygen ions can be used as a stoichiometric compensation. In accordance with the architecture and design of the present invention described above, the following is an embodiment of the performance of an interference element 15 in which the interference element 丨5 is a control input for the infrared spot; infrared based on an allowable wavelength greater than about 76 〇 nm. The light passes through the specification of the visible light that can pass the transmittance of not more than 10%, and the filter film sample is actually produced according to the above-mentioned production method, and the light transmittance is measured by using a spectrometer (hitach Spectrophotometer U-3210). The relationship between the wavelength and the transmittance is shown in Fig. 7. According to the measurement results, the boundary region B1 between the passband region A1 and the cutoff region A2 is in the range of 730 to 750 nm, and the passband immediately after the boundary region. The first bandpass peak of zone A1 is located at 760 nm, and the average penetration rate of pass zone A1 is about 87.3%. This value is relative to the cutoff zone Α2 and §, which can cause great intensity after image capture. Contrast; in addition, the light leakage at the Α2 wavelengths 414, 450, 494, 526, and 646 nm is introduced at the cutoff band □2, and the light transmittance of L1 to L5 is allowed to pass through, and the transmittance is lower than 1'. Ignore these leaks in spot recognition When the effect is on the performance, as shown in FIG. 8A, the interference component I5 is mounted on the detecting device 14, and the detecting device 14 captures the white screen that only projects the laser spot. Instant exposure (about 1/100 second) image, since the interference element 15 only allows infrared light having a wavelength greater than 760 legs to pass, < captures a strongly contrasted spot image; otherwise, as shown in FIG. Without the interference element 15, the background brightness interferes with the spot in, so that the spot cannot be highlighted. As shown in the figure / because the interference element 15 is disposed at the image detecting end of the detecting device 14 and the detecting device 14 is generally a camera, the interference element 15 can be as shown in FIG. (that is, the filter film) is set on the base 151 of 200825876, the seat is on the back side of the side - right ... 铋 π ugly king is now a hollow cylinder, its built-in 52, can be used in the lens of the detection device 14 (4) The combination is such that the 7+ groove 142 is embedded in the device 14 by the flange 152 and the groove 142. The 可 is detachably attached to the detecting member 15 Ή 6 ί When the spot U1 _ is advanced, the interference element can be detected on the device 14, and vice versa, it can be quickly removed.
外，如」/::二除/述該凸緣與凹槽之組合結構 箄方々t 亦可採㈣紋螺合，或卡鉤鉤合 式’/、所能達成之功效相同。 11】，工=述架構，可歸納出該光點偵測系統10债測光點 /包括下列步驟，請同時參閱圖一及圖十： (a)由該光源裝置1Ui射光點ln至該投影畫面12上。 b)將該干涉元件15設置於該偵測裝置14之偵測端，由 斜涉元件15限制該偵測裝置14所能接收之光學波 段與強度。 由及偵測I置14擷取屏幕上的影像並產生訊號。 ⑷由該電腦系、統16接收該制裝置14纟生之影像訊號 並進行分析處理。 其中，該步驟（a)中之晝面12係由該投影裝置13接收 =電腦系統16所傳送之影像後投射而出所形成，且該投影 :面12外圍一定範圍内安排有觸發式選單區域ΐ2ι，故於 忒步驟（c)中，該偵測裝置14之偵測範圍係包括該投影畫 面12及該選單區域121。 為確保光點對應之座標位置判讀的準確性，於上述該 200825876 、光點偵測步驟⑷之前，加入-投影畫面校正程序，用 - 立奴衫畫面對應輸出影像關聯，請參閱圖十一及圖十 示，該投影晝面校正程序係包括： —厅 (a) 由該投影裝置13投射出—具有複數穿插設置之 格之棋盤格影像17。 … (b) 由該偵測裝置14擷取該棋盤格影像17，並產生影像 訊號；由於許多外在因素可能導致該情測裝置14 :法 η 成功擷取該棋盤格影像17,例如該偵測裝置14連妗 中斷等#，因此，必須於本步驟⑹中加入一判斷步驟 (bl) \判斷該偵測裝置14是否成功擷取該棋盤格影像 Π ;若判斷成功擷取該棋盤格影像，則中 影像投影，並中斷該偵測裝置操取影像；二 該棋盤格影像失敗，則停止校正。 (C )由孩黾細系統1 β接收該影像訊號並進行分析處理。 (d) 由該電腦系統16運算並得出複數棋盤格座標值；該複 ( 數棋盤格座標值係指該穿插設置之黑白格之交會點 171。 (e) 由該電腦系統16比對該複數棋盤格座標值是否符合 設定座標值；於該電腦系統16程式内預設有一標準: 標值，若比對該複數棋盤格座標值符合該設定座標 值，則表示投影晝面範圍正確，可由該電腦系統16計 异出投影畫面之邊界，完成投影畫面對應輸出影像之 才父準，若比對該複數棋盤格座標值不符合設定座標 值’則重複該步驟（a)〜（e)，直至完成校準；若比對= 複數棋盤格座標值不符合設定座標值，且大於重複校 19 200825876 . 一尺值時，則停止校正，此時，可由調整該投影裝 ， 置u之投影焦距或投影屏幕距離等方面著手改善，再 重複該步驟（a)〜（e)，直至完成校準。 • _於該絲111之追蹤方法，請同時參及圖十 三，其包括： (a) 由該偵測裝置14擷取一第一畫面； (b) 由該偵測裝置14擷取一第二晝面； 『（c)亥第-畫面與該第二晝面比對並得出一差分影像； 該第-晝面及第二畫面係儲存於一暫存記憶體中，再 於該暫存記憶體中進行比對得出差分影像； ⑷排序求得差分影像亮度最大值位置之該㈣裝置影像 座標； (e)比較該亮度最大值是否大於一門檻值； ()若否則重複步驟（a)〜（e);若是，則繼續以下步驟； (g) 將亮度最大值位置座標轉換為螢幕座標。 (h) 設定座標位置 請再參閱圖-所示，本發明之一特點在於，該投影畫 面12之外圍設有一具有功能選項之觸發式選單區域d， 該選單區域121係由該電腦系統16之程式所提供，當使用 者藉由该光源裝置Π將光點U1投射在該選單區域(亦 即滑鼠游標（圖中未示出）導引至（或超越）該投影晝面12 邊緣），並停留一段由該電腦系統]6所設定之特定時間 後，即可觸發該選單區域121對應之指令產生晝面變化。 本發明利用該偵測裝置〗4可視範圍大於該投影畫面ί2尺 200825876In addition, such as "/:: two division / description of the combination of the flange and the groove 箄 square 々 t can also be used (four) pattern screw, or hook hook type ' /, can achieve the same effect. 11], work = description architecture, can be summarized into the light spot detection system 10 debt measurement point / including the following steps, please also refer to Figure 1 and Figure 10: (a) from the light source device 1Ui light spot ln to the projection screen 12 on. b) The interference element 15 is disposed at the detecting end of the detecting device 14, and the optical band and intensity that the detecting device 14 can receive are limited by the blocking element 15. The image is captured on the screen by the detection and detection unit 14 and generates a signal. (4) The computer system 16 receives the image signal generated by the device 14 and performs analysis processing. Wherein, the face 12 in the step (a) is formed by the projection device 13 receiving the image transmitted by the computer system 16 and projected, and the projection: a triggering menu area ΐ2ι is arranged within a certain range of the surface 12 Therefore, in step (c), the detection range of the detecting device 14 includes the projection screen 12 and the menu area 121. In order to ensure the accuracy of the coordinates of the coordinate position corresponding to the light spot, before the above-mentioned 200825876, the light spot detection step (4), the -projection picture correction program is added, and the output image is associated with the - nunnery screen, see Figure 11 and As shown in FIG. 10, the projection face correction program includes: - hall (a) projected by the projection device 13 - a checkerboard image 17 having a plurality of interspersed settings. (b) the checkerboard image 17 is captured by the detecting device 14 and produces an image signal; the artifact device 14 may be successfully retrieved from the device image 14 due to a number of external factors, such as the Detective The measuring device 14 is connected to the interrupting device#. Therefore, a determining step (bl) must be added in the step (6) to determine whether the detecting device 14 successfully captures the checkerboard image Π; if it is determined that the checkerboard image is successfully captured , the image is projected, and the detecting device is interrupted to take an image; if the checkerboard image fails, the correction is stopped. (C) The image signal is received by the child system 1 β and analyzed. (d) being computed by the computer system 16 and resulting in a plurality of checkerboard coordinate values; the complex (number of checkerboard coordinates refers to the intersection point 171 of the black and white grid of the interspersed settings. (e) by the computer system 16 Whether the value of the plurality of checkerboard values conforms to the set coordinate value; a standard is preset in the computer system 16 program: if the coordinate value of the plurality of checkerboards matches the set coordinate value, the range of the projected facet is correct, The computer system 16 calculates the boundary of the projected image, and completes the projection image corresponding to the output image. If the coordinate value of the plurality of checkboxes does not meet the set coordinate value, the steps (a) to (e) are repeated. Until the calibration is completed; if the comparison = the number of coordinates of the checkerboard does not meet the set coordinate value, and is greater than the repeating school 19 200825876. One foot value, then the calibration is stopped. At this time, the projection focus can be adjusted or the projection focal length of u can be adjusted. The projection screen distance and other aspects are improved, and the steps (a) to (e) are repeated until the calibration is completed. • For the tracking method of the wire 111, please refer to FIG. 13 at the same time, which includes: (a) Detective The measuring device 14 captures a first picture; (b) the detecting device 14 captures a second side; "(c) the hai-picture is aligned with the second side and a difference image is obtained; The first side and the second picture are stored in a temporary memory, and then compared in the temporary memory to obtain a difference image; (4) sorting the differential image brightness maximum position of the (four) device image (e) compare whether the maximum brightness value is greater than a threshold value; () if otherwise repeat steps (a) to (e); if yes, continue with the following steps; (g) convert the brightness maximum position coordinate to screen coordinates (h) Setting the coordinate position, as shown in the figure--, one of the features of the present invention is that the periphery of the projection screen 12 is provided with a triggering menu area d having a function option, and the menu area 121 is composed of the computer system 16 Provided by the program, when the user projects the light spot U1 in the menu area by the light source device (ie, the mouse cursor (not shown) leads to (or beyond) the edge of the projection surface 12) And stay for a certain period of time set by the computer system]6 To trigger the menu region 121 corresponding to the instruction generating surface day variations. The present invention utilizes the detection means 4〗 visible range is greater than the projection screen ί2 feet 200825876
Mm ΐ2ΐ^1^ΐ 14 12 屬於習二二單之作動原理雖 圍作為指令下達之應用。k未見整合於該投㈣面12外 後，===:附在上述光點判讀程序步驟 -判斷步驟，根據兮*4广，後’s亥電腦系統16再執行 否位於該選單座!判斷該光點⑴位置座標是 ⑵上，則二Λ f1上’若該螢幕座標落在該選單區域 用Sendinput函數^位置之功能（―般係利 具備之功能，可至於該選單區域⑵所 ί括翻頁(上頁、下頁):播; 為避免使用時之誤差，可於此功能加入m知= 力能； 於該光點⑴移至該選單區域121 =不’亦即可 應位置顯示對應之指令字串，如;者^面邊界的對 顯示確保指令下達之正確性；榮可以經由字串之 按鈕並不會麥塑刭浐旦/蚩 幕卜砥早的優點在於控制 的投影空間的Γ ’使用者可以享㈣^ 確性及穩定性之畫關之情況下進行高準 綜上所述，本發明所提供之 法，透過偵測裝置擷取影像與軟體即運^、==方 置，進而將光點位㈣換成_位置點位 之Τ見先透過，使糸統可獲得校準過程所必要 200825876 之影像資訊。本系統具有高精準度位置定位、光點快速追 縱辦識、不受環境光線干擾等優勢，此外，本發明利用偵 _ 測裝置視野大於投影範圍之特色引入外圍選單，提供不干 • 擾投影晝面之人性化操作介面，可提高操作便利性，適於 會議簡報或是互動教學等相關領域應用。 惟，必須強調的是，上述本發明之架構及設計，僅係 針對紅外光點的控制輸入作為本發明之說明例，當不能以 之限定本發明所實施之範圍，本發明之特點在於藉由不同 Γ 的干涉元件15之設計，可用以擷取紅外光點、可見藍光 點、可見青光點、可見綠光點、可見橙光點、可見紅光點 以及可見紫光點，其所依據的設計原則如圖二至六所示， 換言之，其他不同顏色之不可見光或可光而言，本發明之 設計原則同樣適用大凡依本發明申請專利範圍所作之均等 變化與修飾，皆應仍屬於本發明專利涵蓋之範圍内，謹請 貴審查委員明鑑，並祈惠准，是所至禱。 ( 【圖式簡單說明】 圖一係本發明架構之較佳實施例結構示意圖。 圖二係本發明之干涉元件針對擷取紅外光點之波長對 穿透率的設計光譜圖。 圖三係本發明之干涉元件針對擷取473nm光點之波長 對穿透率的設計光譜圖。 圖四係本發明之干涉元件針對擷取532nm光點之波長 對穿透率的設計光譜圖。 圖五係本發明之干涉元件針對擷取650nm光點之波長 對穿透率的設計光譜圖。 22 200825876 圖六係本發明之干涉元件針對擷取405nm光點之波長 對穿透率的設計光譜圖。 圖七係實際檢測針對紅外光點偵測之本發明樣品所得 光譜圖。 圖八A係採用本發明之干涉元件擷取光點影像之示意 圖。 圖八B係未採用本發明之干涉元件擷取光點影像之示 意圖。 圖九係本發明之干涉元件設置於座體上之較佳實施例 立體圖。 圖十係本發明偵測光點之方法方塊圖。 圖十一係本發明投影晝面校正程序之方法方塊圖。 圖十二係本發明投影棋盤格影像之架構示意圖。 圖十三係本發明光點座標判讀程序之方塊圖。 【主要元件符號說明】 10 -光點偵測糸統 11 -光源裝置 111 -光點 12- 畫面 121-選單區域 13- 投影裝置 14- 偵測裝置 141- 鏡頭 142- 凹槽 200825876 15-干涉元件 151-座體 15 2 -凸緣 16 -電腦糸統 17-棋盤格影像 171-黑白格之交會點Mm ΐ2ΐ^1^ΐ 14 12 belongs to the application principle of Xi Er 2, although it is used as an instruction. k is not integrated in the investment (four) face 12, ===: attached to the above-mentioned light point interpretation program step - judgment step, according to 兮 * 4 wide, after the 's Hai computer system 16 re-execution is not in the menu seat! The position of the spot (1) is (2), then the function of the Sendinput function ^ position in the menu area if the screen coordinates fall in the menu area (the function of the system is available, as far as the menu area (2) is included. Page turning (previous page, next page): Broadcasting; in order to avoid the error in use, you can add m know = force energy for this function; move to the menu area 121 = no in this spot (1) Corresponding instruction string, such as; the face of the face boundary display to ensure the correctness of the command; Rong can be through the button of the string and will not be the advantage of the film The user can enjoy (4) ^ the accuracy and stability of the picture under the circumstances of the high-precision above, the method provided by the present invention, through the detection device to capture images and software, then ^, = = square Set, and then change the spot (4) to the position of the _ position, see the first pass, so that the system can be The image information of 200825876 is necessary for the calibration process. The system has the advantages of high-precision position positioning, fast spot tracking, and no interference from ambient light. In addition, the present invention utilizes the detection field of the detector to be larger than the projection range. Introducing a peripheral menu to provide a user-friendly interface for unobtrusive projections, which improves operational convenience and is suitable for applications such as conference presentations or interactive teaching. However, it must be emphasized that the above-described architecture of the present invention and The design is only for the control input of the infrared spot as an illustrative example of the present invention. When the scope of the invention is not limited thereto, the invention is characterized in that the design of the interference element 15 of different turns can be used to capture Infrared spots, visible blue spots, visible cyan spots, visible green spots, visible orange spots, visible red spots, and visible violet spots are based on the design principles shown in Figures 2 through 6. In other words, different In terms of invisible or illuminable color, the design principles of the present invention are equally applicable to the average of the scope of the patent application of the present invention. Changes and modifications should still fall within the scope of the patents of the present invention. I would like to ask your review committee to give a clear understanding and pray for it. It is a prayer. (Simplified illustration) Figure 1 is a better implementation of the architecture of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Figure 2 is a design spectrum of the wavelength of the interference element of the present invention for capturing the infrared spot. Figure 3 is the wavelength of the interference element of the present invention for capturing the wavelength of the 473 nm spot. Figure 4 is a design spectrum of the interference element of the present invention for the wavelength of the 532 nm spot. Figure 5 is the wavelength of the interferometric element of the present invention for the wavelength of the 650 nm spot. Design of the spectrogram. 22 200825876 Figure 6 is a design spectrum of the wavelength versus transmittance of the interference element of the present invention for capturing a 405 nm spot. Figure 7 is a graph showing the actual spectrum of the inventive sample for infrared spot detection. Figure 8A is a schematic illustration of the capture of a spot image using the interference element of the present invention. Figure 8B is an illustration of the use of the interfering element of the present invention to capture a spot image. Figure 9 is a perspective view of a preferred embodiment in which the interference element of the present invention is disposed on a base. Figure 10 is a block diagram of a method for detecting a light spot of the present invention. Figure 11 is a block diagram showing the method of the projection pupil correction program of the present invention. Figure 12 is a schematic diagram showing the structure of the projected checkerboard image of the present invention. Figure 13 is a block diagram of the light spot coordinate interpretation program of the present invention. [Main component symbol description] 10 - Spot detection system 11 - Light source device 111 - Spot 12 - Screen 121 - Menu area 13 - Projection device 14 - Detection device 141 - Lens 142 - Groove 200825876 15-Interference element 151-seat body 15 2 - flange 16 - computer system 17 - checkerboard image 171 - black and white grid intersection point
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