Data detection method from printed images with different resolutions using tablet device

Yuuya Moritani, Atsushi Yoshihara, Nayuta Jinda, M. Muneyasu
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引用次数: 3

Abstract

In this paper, we propose a method of embedding and detecting data in printed images with several resolutions using the camera of a tablet device. The proposed method is based on a method that uses block division and code diffusion. To specify the resolution of an image and the number of blocks, invisible markers that are embedded in the amplitude domain of the discrete Fourier transform of the target image are used. The angles between the markers and the x-axis are used to specify the resolution and the number of blocks. The proposed method can increase the variety of images suitable for data embedding. From experimental results obtained using a tablet device, it is shown that the proposed method is effective for specifying the resolution and the number of blocks in a captured image.
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利用平板设备对不同分辨率的印刷图像进行数据检测的方法
在本文中,我们提出了一种利用平板设备的相机在不同分辨率的印刷图像中嵌入和检测数据的方法。该方法基于分块分割和代码扩散的方法。为了指定图像的分辨率和块的数量,使用嵌入在目标图像的离散傅里叶变换的幅度域中的不可见标记。标记和x轴之间的角度用于指定分辨率和块的数量。该方法可以增加适合数据嵌入的图像种类。在平板设备上的实验结果表明,该方法可以有效地指定捕获图像的分辨率和块数。
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