QR Code風格化之研究

Abstract

QR Code 是一種能夠將資訊編碼的二維條碼。一個標準的QR Code只由黑色和白色的正方形組成，在外觀上並不具有特色。因此， 在這篇論文提出了一個裝飾QR Code 的架構，藉由此架構使QR Code 得以更引人注目的方式呈現、並盡所能保有QR Code 的可讀性。 此架構主要是由藝術家所設計的QR Code 得到啟發，根據觀察， 藝術家通常會在QR Code 中插入圖片以及風格化原本的黑白方形。風 格化以參照二元化的範例圖形來重新塑型原有的正方形，使得其局部 外觀能與範例圖型相似的方式來達成。而關於插入圖片的部分，則更 提出對插入的圖片進行編碼感知變形(code-awawre warping) 的技術來 降低插入圖片所造成的編碼錯誤、增高可讀的機率。相較於從前的方 法對整張圖做全域性的轉換，此演算法針對圖片做局部變形去逼近周 遭編碼的顏色分布。最後以一系列市面上可獲得的QR Code 辨識軟體以及理想上可讀性的數據來檢驗大量所裝飾的QR Code來驗證此篇論文的結果。

QR code is a kind of two dimensional barcode that encodes information. A standard QR code contains only regular black and white squares, and thus is not so attractive. In this paper, we propose a novel framework for embellishing a standard QR code, so that the embellished QR code is attractive and recognizable for human when printed on any broadcasting media while minimizing its distance from standard QR code. The proposed method is inspired by artistic works, where a QR code is usually embellished by stylizing the square codes and embedding images. In this framework, the regular square codes are reshaped by referring a binary examplar, so that their local appearances resemble the example shape. In addition, we propose an error-aware warping technique for deforming the embedded image, so that the error of the QR code caused by the image embedding is minimized to increase the QR code’s readability. Compared to previous global transformation techniques, the algorithm allows for lower data error because the warping is able to locally deform the embedding image to adapt the squares surrounding it. This framework has been examined by embellishing an extensive set of QR codes and testing the readability with several commercial QR code readers.