通过用字、短语或数字替换明文来打乱信息的一种方法
其中最重要的方法有立体视觉，条形光相位平移法和条形光格雷编码法。
The most important is stereo vision, strip lighting based phase-shift and gray-code method.
分形图象编码法具有高压缩比、高图象品质等显著优点，但其编码时间太长。
Fractal image compression is of outstanding advantages of high compression ratio and high image qualities, but its encoding process is time-consuming.
绝对编码法的电子经纬仪中的编码器的编码方式可以分为多码道编码和单码道编码。
Absolute coding method in the electronic theodolite encoder encoding can be divided into single Multi-ring coding and Single-ring coding.
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