摘要
介绍检测无损压缩的目的、应用以及针对管道漏磁检测数据的一种检测无损压缩方法。通过分析漏磁检测数据的特征,使用有损预测编码和无损可逆小波变换编码压缩非重要和重要区域的数据。该方法非常适于采用现场可编程门阵列(FPGA)器件的实现。
The aim and application of diagnostically lossless compression and the data compression method for magnetic flux leakage(MFL) inspection of pipelines were introduced. By analyzing the character of the MFL inspection data, anticipating method(with axial differencing) and reversible wavelet transform method were used to compress the data of unimportant and important regions. The method was very suitable for hardware implementation based on FPGA(field programmable gate array).
出处
《无损检测》
2003年第3期146-149,共4页
Nondestructive Testing
基金
国家自然科学基金(60272015)
关键词
检测无损压缩
管道
漏磁检测
数据压缩
编码
Magnetic flux leakage inspection
Compression
Data processing
Programming
