GPU-Based Bit- Plane Coding for EBCOT in Image Compression Algorithm of Digital Cinema

• 1、Information and Communication School,Beijing University of Posts and Telecommunication,Beijing 100876

Abstract：JPEG2000 is the future standard of static compressed image. It combines better compression performance and code stream with good scalability compared with JPEG. Digital Cinema Initiatives(DCI) has selected it as the compression format to be used for digital distribution of motion pictures. However, due to its complexity of algorithm especially the Embedded Block Coding with Optimized Truncation(EBCOT) and time-consuming, it hasn't been widely used in systems with high real-time requirement.As the rapidly development of Graphics Processing Unit(GPU), it is possible to compute massive data using GPU other than CPU. Especially, Compute Unified Device Architecture(CUDA) proposed by NVIDIA in 2006 makes it easier and more effective to process data using Single Instruction Multiple Threads(SIMT) pattern.This paper proposes a novel GPU-Based Bit-Plane Coding(BPC) for EBCOT in Image Compression Algorithm of Digital Cinema. Our experimental result demonstrates that it is 3 to 4 times speedup compared with the original implementation on the CPU.

Keywords： image process digital film EBCOT GPU CUDA