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    • 9. 发明申请
    • APPARATUS AND METHOD FOR DETECTING ERROR IN A DIGITAL IMAGE
    • 用于检测数字图像中的错误的装置和方法
    • WO2003088662A1
    • 2003-10-23
    • PCT/US2003/011072
    • 2003-04-09
    • QUALCOMM INCORPORATED
    • GOVINDASWAMY, SenthilIRVINE, Ann C.RATZEL, John
    • H04N7/12
    • H04N19/89H04N19/625
    • An apparatus and method for the detection of errors in compressed digital image is disclosed (Fig.2). In one embodiment, a signature is generated using a multiple input shift register and added to the compressed information (210). The signature is verified at the decoder to detect an error in the compressed information. Other information such as the frame number and/or color component type of the compressed image can also be verified to detect errors in the compressed information. In other embodiments, the decoder detects errors if there are bits remaining after decompression and/or if there are invalid codes at decompression (215). Once an error is detected, the compressed information can be discarded or re-sent and processed. Therefore, the detection of errors can significantly enhance at least the reliance of systems such as digital cinema that require compression of large amounts of data.
    • 公开了一种用于检测压缩数字图像中的误差的装置和方法(图2)。 在一个实施例中,使用多输入移位寄存器生成签名并将其添加到压缩信息(210)。 在解码器处验证签名以检测压缩信息中的错误。 还可以验证诸如压缩图像的帧号和/或颜色分量类型的其他信息以检测压缩信息中的错误。 在其他实施例中,如果在解压缩之后存在剩余位和/或在解压缩时存在无效代码,则解码器检测错误(215)。 一旦检测到错误,可以丢弃或重新发送和处理压缩的信息。 因此,错误的检测至少可以显着提升诸如需要压缩大量数据的数字影院等系统的依赖。