CAJ | 학술논문

提出了基于单指令多数据(single instruction multiple data,SIMD)指令集架构的4×4变换系数重用算法,用于简化H.264/AVC自适应块变换(adaptive block-size transforms,ABT)模式的计算复杂度.在ABT编码模式下,该算法通过重用4×4变换系数,用8×8导出变换量化计算得到8×8变换量化系数.提出的算法可在PC和DSP等SIMD指令集架构中简单实现,显著减少H.264/AVC ABT模式中8×8变换的计算时间和资源开销.仿真结果显示,变换系数重用算法能节省8×8变换的计算时间约达50%.
제출료기우단지령다수거(single instruction multiple data,SIMD)지령집가구적4×4변환계수중용산법,용우간화H.264/AVC자괄응괴변환(adaptive block-size transforms,ABT)모식적계산복잡도.재ABT편마모식하,해산법통과중용4×4변환계수,용8×8도출변환양화계산득도8×8변환양화계수.제출적산법가재PC화DSP등SIMD지령집가구중간단실현,현저감소H.264/AVC ABT모식중8×8변환적계산시간화자원개소.방진결과현시,변환계수중용산법능절성8×8변환적계산시간약체50%.
Proposed a 4×4 transform coefficient reuse algorithm based on single instruction multiple data (SIMD) instruction set architecture for reducing the computing complexity of adaptive block-size transform(ABT) scheme in H.264/AVC. In ABT scheme, the algorithm computed the 8×8 transform and quantization coefficients with an 8×8 derivate transform and transform through reusing the 4×4 transform coefficients. The proposed algorithm could be simply implemented in SIMD instruction set architecture, such as PC and DSP, and reduced the computing time and resource consumption of ABT scheme significantly. The simulation results show that the transform coefficients reusing algorithm can save computing time of 8×8 transform up to 50%.