適用於手機相片不均勻背景的QR Code擷取機置及其應用

A General Scheme for Extracting QR Code from a non-uniform background in Camera Phones and Applications

張佑瑄(Yu-Hsuan Chang)

指導教授 ： 陳銘憲

國立臺灣大學/電機資訊學院/電信工程學研究所/碩士(2007年)

https://doi.org/10.6342/NTU.2007.03126

摘要

近幾年，QR code 越來越受歡迎且被廣泛應用在各種領域。隨著行動通訊科技快速進步，QR code 與照像手機結合已成為新的溝通介面。然而，在過去從相片中擷取QR code 的相關研究裡，並沒有考量複雜背景的情形。在本篇論文中，我們實作了一個應用並提出從複雜背景擷取QR code 之演算法。我們的演算法以QR code 的特徵作為基礎，因此可以有效率且正確地找到QR code 之位置。實驗結果驗證我們的方法具有好的效果，且在行動資訊環境下是實際可行的。

關鍵字

影像處理QR code 擷取 ； QR code 辨識不均勻背景 ； 行動電話

並列摘要

In the recent year, QR code has become widely popular and has been used in various
applications. With the rapid advances in mobile communication technologies, QR code
in the embedded camera devices has been used as new input interfaces. However, the
previous works for extracting QR code from an image do not consider a non-uniform background. In this thesis, we implement the applications of QR code and propose an efficient algorithm to extract QR code from the non-uniform background. Our QR-code extraction algorithmis based on the features of QR code so that it is efficient and finds QR code position precisely. In contrast with prior works, our approach is of higher accuracy for QR-code recognition and realistic in a mobile information environment.

並列關鍵字

image processing ； QR-code extraction ； QR-code recognition ； non-uniform

參考文獻

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[3] Encoder and Decoder. http://qrcode.sourceforge.jp/.