| 摘要 |
A seismic data compression technique comprises sampling each individual seismic trace, operating upon a set number of samples to generate a predicted sample, quantizing the difference between the next sample and the predicted value of the sample, and storing and/or transmitting the quantum number so that the amount of information which need be stored and/ or transmitted is limited. In a preferred feature, a linear prediction differential pulse code modulation scheme is used to provide the predicted value, while an adaptive quantization scheme is used to quantize the error value to be transmitted, thus yielding further improvements in accuracy. A feedback loop can be applied to the decompression operation to limit quantization noise and further improve the fidelity of representation of the decompressed signals. <IMAGE> |
