紅外線數位浮水印結合音訊位置碼點與擴增實境之研究

Abstract

本研究應用紅外線數位浮水印技術製作具隱藏性的雙重訊息圖案，該隱藏圖案在紅外線光源照射下，可因墨水光學特性分別偵測到含碳黑黑墨浮水印的擴增實境辨識圖案與音訊位置碼點。本研究以數位過網演算方式製作出黑墨的位移調幅網點(碼點)與青墨、洋紅墨、黃墨組成的調頻網點，並達到中性灰底紋來隱藏浮水印。本研究預期成果顯示可成功透過紅外線讀取隱藏的擴增實境辨識符號與位置碼點音訊資訊，擴充傳統數位浮水印僅提供單一隱藏資訊功能的限制。此外，本研究使紙張載體不僅具有視覺性的美觀，更可兼具讀取出音訊與呈現3D模型或動畫，擴充紙張載體的功能及互動性。本技術未來可應用於教學領域中，讓教科書不再僅是單方面的傳播，而是能跳脫傳統的閱讀學習框架，透過互動讓「教」與「學」更加有趣、多元化。The research proposes a technique of double data-hiding watermark with frequency modulation and position code. Due to the optical characteristics of inks, the AR marker and position code will be detected under infrared light. In order to hide the double data on plain paper, the watermark is coordinated with position code which is printed by carbon black ink and frequency modulation which is printed by CMY inks to maintain neutral gray. Through the infrared device, the AR marker and the position code information can be read to generate the 3D image of augmented reality and the audio signal. This study provides an infrared watermark technique to hide the double data-hiding watermark on plain paper which successfully brings out the 3D images and an audio signal. This approach not only makes the meaningless markers invisible but also enhances the function and interactive capability of paper. In the future, the technique can be applied to education which enables “teaching” and “learning” becomes more interesting.