三維多邊形網格之強健浮水印機制

A Robust Watermarking Mechanism on 3D Polygonal Mesh

陳煒松(Wea-Soung Chen)

指導教授 ： 陳宏光 ； 張榮吉

亞洲大學/創意設計學院/資訊與設計學系碩士班/碩士(2009年)

摘要

資訊科技的發展與網際網路的普及，使得許多創作與商品諸如文學、繪畫、攝影圖像、電視節目及電影影片、廣播與公文書信等，能迅速地透過數位化的方式來出版、發佈及傳遞。然而，由於數位文件有著易於傳播、複製、修改及儲存的特性，人們不僅可以從網際網路中找尋與購買所需的數位多媒體資訊，未經授權的複製、散佈甚至於惡意的竄改均屢見不鮮。此一現象，不僅直接影響到出版者的版權與商業利益，更嚴重侵犯了創作人的著作權，若放任此一現象之發展，將可能嚴重影響出版與創作者的經濟來源，造成創作與出版意願降低，進而使得未來文化發展衰退，大家也無法享有優質的文化生活。因此，如何提供一個完善的保護機制來保護創作人的智慧財產權、商業團體的版權、以及重要數位內容的認證與防偽是一項非常重要的議題。本論文針對此一議題，提出一個用以有效保護三維多邊形網格模型的一個數位浮水印作法。不同於其他作法，我們的新作法透過將模型轉換為幾何影像的方式，不僅具有強韌性的特質，更可針對不同之應用運用已有的二維影像認證機制達到特定的目的。

關鍵字

三維網格浮水印 ； 盲擷取浮水印 ； 版權保護

並列摘要

As an effective means for either tracing document sources, identification of ownership, embedding trademarks or copyright claims, digital watermarking has been intensively studied for the last two decades. While previous literatures on digital watermarking mechanisms mostly focus on 2D images, videos, sound, and text, relatively few works are on the 3D objects. In this paper, we have proposed a blind and robust watermarking mechanism for 3D polygon meshes based on geometry image. Since the geometry image is essentially stored as a 2D color image, we can apply most watermarking methods on 2D images as well. Through the experiments, we have found that the new blind watermarking approach to be very robust and efficient.

並列關鍵字

3D mesh watermarking ； blind watermarking ； copyright protection

參考文獻

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