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ABSTRACT |
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In this study a video compression method has been developed. A discrete wavelet transform has been applied to a video frame. Wavelet coefficients were, then, sent to a recently developed quantization algorithm. The purpose of quantization is to reduce the number of coefficients used to represent the frame, so that minimum visual distortion occurs in spatial domain. After that, to minimize the number of coefficients, a zerotree entropy(ZTE) coding has been performed to the quantized coefficients. Finally, arithmetic coding has been applied to compress ZTE symbols and remaining non-zero coefficients. In the frames that have small color distributions, compression ratio of 10:1 has been achieved. However, in big color distributed frames, compression ratio was remained at 6:1. |
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