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    • 9. 发明授权
    • Arithmetic coding apparatus and image processing apparatus
    • 算术编码装置和图像处理装置
    • US06677869B2
    • 2004-01-13
    • US10046764
    • 2002-01-17
    • Hitoshi Horie
    • Hitoshi Horie
    • G06K936
    • H04N19/60H03M7/4006
    • An arithmetic coding apparatus for carrying out complete pipeline processing is provided. This arithmetic coding apparatus analyzes an input image, reads image information accurately and performs arithmetic coding at ultra-high speed. Using a future prediction type Qe memory removes disturbance in the pipeline caused by renormalization. The arithmetic coding apparatus also generates a common context when coding multi-valued images without distinguishing between an AC component and DC component of a DCT coefficient. The apparatus is also provided with a circuit for outputting an arithmetic code which is a variable-length code with the length fixed to facilitate editing of a reconstructed image.
    • 提供一种用于执行完整流水线处理的算术编码装置。 该算术编码装置分析输入图像,精确地读取图像信息,并以超高速进行算术编码。 使用未来的预测类型Qe记忆可以消除由重归一化引起的管道中的干扰。 当对多值图像进行编码而不区分DCT系数的AC分量和DC分量时,算术编码装置也产生公共上下文。 该装置还设置有用于输出算术代码的电路,该算术代码是具有固定长度的可变长度代码,以便于编辑重建图像。