Method and system to process a digital image
    4.
    发明授权
    Method and system to process a digital image 有权
    处理数字图像的方法和系统

    公开(公告)号:US08442262B2

    公开(公告)日:2013-05-14

    申请号:US11016366

    申请日:2004-12-17

    IPC分类号: G06K9/00

    摘要: A method and an apparatus to process a digital image is provided. The method may comprise receiving host image data, receiving audio data and embedding the audio data within the host image data to provide an embedded image wherein the audio data if freely recoverable from the embedded image. The method may comprise processing the audio data using a Short Term Fourier Transformation (STFT) prior to embedding the audio data within the host image data. The method may reduce an amount of digital data that represents an audio signal included in the audio data prior to embedding the audio data within the host image. In one embodiment, the method comprises quantizing magnitude data and discarding phase data of the audio signal to provide the audio data for embedding. The method may comprise quantizing the audio data to match a shell of a D4 Lattice.

    摘要翻译: 提供了一种处理数字图像的方法和装置。 该方法可以包括接收主机图像数据,接收音频数据,并将音频数据嵌入主机图像数据内以提供嵌入图像,其中音频数据可从嵌入图像中自由恢复。 该方法可以包括在将音频数据嵌入主机图像数据之前使用短期傅里叶变换(STFT)来处理音频数据。 该方法可以在将音频数据嵌入主机图像之前减少表示音频数据中包括的音频信号的数字数据量。 在一个实施例中,该方法包括量化幅度数据并丢弃音频信号的相位数据以提供用于嵌入的音频数据。 该方法可以包括量化音频数据以匹配D4晶格的壳。