Fpga Implementation of Bit Plane Entropy Encoder for 3‐d Dwt Based Video Compression

In video processing, energy efficient real time video compression and transmission finds numerous applications. In this paper entropy coding is performed for video compression based on three‐dimensional discrete wavelet transform. Currently the most popular video coding approach is an extension of H.264/SVC standard. It provides high compression efficiency due to motion compensation and inter‐layer prediction. But, its implementation in a mobile device is a difficult task because of high computational complexity of motion estimation and inter‐layer prediction. Therefore, in this paper a scalable video codec based on 3‐D DWT and simple bit‐plane entropy coding of wavelet subband matrices is proposed. The proposed entropy coder uses zero‐run Levenstein coder and Adaptive binary range coder. For zero‐run‐length compression, Levenstein codes are used. Therefore, computation complexity of this coder is significantly less than bit‐plane arithmetic coder in JPEG2000 standard and entropy encoder in 3‐D SPIHT algorithm.