【摘要】 提出一种使用三维离散余弦变换 ( 3D DCT)对运动图像进行压缩解压的新算法 .在此算法的基础上构造了一个 80位 3D DCT硬件核 ,通过并行连乘连加运算加快计算速度、三维转置存储体消除矩阵转置耗时、中间寄存器消除中间计算结果的存取时间等综合手段 ,达到高速处理目的 .FPGA实现的时序模拟表明 ,采用这种算法可以对现有制式的电视图像进行实时压解处理 .更多还原

【Abstract】 This paper proposes a new algorithm on motion pictu re compression and decompression using Three-dimensional Discrete Cosine Transfor m. The algorithm not only emphasizes reducing computation but also helpful with hardware implementation. Based on this approach, an 80 bit-parallelled 3D-DC T hardware is developed, which uses parallel multiplication to accelerate comput ation ,three-dimensinal transposition memory to remove the time consumption of transposition operation and temporary register to reduce the time of accessing i ntermediate values. FPGA simulations show that real time video 3D-DCT compressi on can be completed by using the hardware core.更多还原