imGlass: 於多重解析度互動桌上的縮放互動技術

Abstract

隨著觸控互動技術的發展，觸控桌也成為常見且實用的大型觸控裝置之一。觸控技術與界面讓使用者得以用更直覺、簡單的方式與系統互動，然而，隨著顯示觸控裝置面積的資家，觸控顯示面板製造之成本也隨之大幅提高。台大網媒所指觸顯微桌研發團隊於2007年提出了i-m-Top，利用結合高解析度投影與低解析度投影的多重解析度 (multi-resolution) 技術，有效地解決了大型觸控顯示裝置遭遇到的成本問題。 包含多重解析度技術的指觸顯微桌提供了一種新的顯示與互動方式，其顯示技術主要應用在畫作觀賞互動上：使用者從低解析度區域得知整體內容，並可仔細觀察高解析度投影所提供的更清晰的細節內容，這種融合細節與整體資訊的瀏覽技術，讓使用者得以快速且直覺的觀賞大型畫作。 近年來有許多關於資訊瀏覽技術之研究，但是，這些技術多實現在電容、電阻式等單一解析度之觸控顯示面板上，面板面積不大，並且在多重解析度的觸控桌平台上還沒驗證其有效性。為了進一步強化使用在指觸顯微桌上的資訊瀏覽的體驗，作者分析了數個有代表性的資訊流覽技術，並且提出了一個在指觸顯微桌上更有效率的多重解析度資訊流覽技術：imGlass。在論文中，我們分析了相關研究的設計準則，並提出了適合於多重解析度觸控桌的資訊瀏覽技術的設計準則，並且實作了四種不同的瀏覽技術進行使用者研究來驗證。初步研究結果顯示，藉由多重解析度投影技術的幫助，使用者在瀏覽數位內容的速度比起單一解析度觸控桌提高了1.3倍，且多重解析度瀏覽技術提供了使用者更好的瀏覽體驗。

With the recent growing popularity of interactive touch surfaces, tabletops are becoming widely spread in different fields of our everyday lives. Concepts of touch introduced a totally new way of interaction to society, where people can interact with technologies in a more intuitive and direct way. With this recent trend of using larger displays with higher resolution, and manipulate the content by direct touch, the question of price also gained importance. One of previous works developed a cost-effective solution, the two resolution projector-based tabletop, i-m-Top. It resolves the commercial issue and provides an even bigger area for research. The two resolutions display provides a new way of interaction on tabletops, especially in the area of scaling objects. After surveying a few research works and papers we discovered many available magnifying techniques for touch based interfaces, especially for LCD displays. However, no research has been found that surveyed the implementation of scaling on multiresolution displays. This paper introduces imGlass, the technique which supports four different scaling modes, including a 1 one-resolution based mode and 3 two-resolution modes, which support different kinds of multiscale user interaction on the interactive tabletop surface. Unlike traditional pan-zoom interfaces, imGlass provides up to three levels of zooming techniques. The aim of this master thesis is to show that the two resolutions can provide a more efficient interaction than an interaction on one resolution displays. We evaluated our techniques by holding a User Study, in the context of both object locating and scaling. Results have indicated that the two resolutions modes provide a 1.3 times faster interaction than a one resolution mode in both objective and subjective measurements