A Lossless Data Compression Method Based on Integer Lifting Wavelet Transforms

摘要：

Data compression is a key step for improving data transmission and memory efficiency. A method of lossless data compression based on integer lifting wavelet transforms is proposed. Transform Formulas of integer lifting wavelet transforms with interpolating subdivision principle is given and the lossless data compression flow is described. Values and energies distribution characteristics of original data and wavelet coefficients are researched. Data energy is congregated in the low frequency part via wavelet transform. At the same time, energy is congregated around few wavelet coefficients and more small wavelet coefficients are produced. Consequently, the purpose of improving lossless data compression rate is reached. Values and energies distribution characteristics and advantages of the lossless data compression method are validated by simulation.

关键词： lifting wavelet transform integer wavelet transform lossless data compression proccess data compression

作者: CAO Jianjun QU Lei YUAN Zhen ZHANG Hui

作者单位: Nanjing Telecommunication Technology Institute, Nanjing, Jiangsu, China, 210007

会议类型: 国际会议

会议名称: 第八届国际测试技术研讨会(8th International Symposium on Test and Measurement)

会议地点: 重庆

会议语种:英文

页码: 1102-1106

在线出版日期: 2009-08-01（万方平台首次上网日期，不代表论文的发表时间）