時序型反射式三維互動系統

Abstract

近年來三維立體顯示器已成為新時代顯示器的指標，而觸碰螢幕也提供了更為直覺的人機互動方式，因此，為了能以手直接與立體顯示器產生的立體影像互動，電荷耦合元件(CCD)則是近期常應用於三維互動系統的偵測架構。但此架構會因視角問題而使其互動範圍受限，不利於近接偵測和小尺寸應用。所以，時序型反射式的三維互動系統為合適的應用系統。此系統是建立在內嵌式光學感測器的架構上，因此沒有視角問題且體積很小。除此之外，系統架構包含了紅外線背光源以及放置在面板上的時序型紅外線光源。此兩種不可見光光源可提供系統額外光源，使其能照射到手指以得到反射光訊號。因此，此時序型反射式互動系統可在手上無額外光源下運作。而反射式訊號可被內嵌式光學感測器接受並被提出的演算法處理藉以得到手指位置的三維資訊。 本論文討論的內容涵蓋其時序型反射式三維互動系統的架構及演算法原理，三維座標的量測並討論其誤差及解析度。最後，此時序型反射式三維互動系統已可在四吋的光柵式立體顯示面板上運作，更進一步的來說，其深度互動範圍及解析度的結果都可應用在攜帶型小尺寸的產品上。

In recent years, the 3D display becomes the main stream and the touch panel would provide the more intuitive method to interact with display. Therefore, the camera based system could be used to interact with 3D images. However, the interactive range of this system would be limited by the viewing angle. Therefore, this system is not suitable for approach sensing and small size display. To achieve interaction with small size 3D displays by bare finger, the sequential reflecting mode system with embedded optical sensor was proposed. Because this system has small volume and it can be operated in area close to the panel. Moreover, the construction includes IR backlight and sequential illuminators. The IR backlight and sequential illuminators would illuminate finger and the reflective light signals would be captured by optical sensor. Therefore, this sequential reflecting mode system can be operated without any devices on hand. Furthermore, the captured reflective signals can be processed by full-search and region based algorithm to obtain 3D coordinates (x, y and z) of finger. The construction and algorithm of sequential reflecting mode system would be proposed and results of calculated 3D coordinates (x, y and z) are discussed. Consequently, the sequential reflecting mode system had implemented on 4 inch autostereoscopic panel. Furthermore, the results of interactive range of depth value and resolution of 3D coordinates (x, y and z) and can be applied to portable applications.