Objective To study whether it can be directly compared that one of X ray pictures taken in different period and exposure conditions with one processed by histogram normalization.
目的探讨不同时期、不同条件的X线片图像做直方图归一化处理后能否直接进行灰度或颜色的对比。
Some normalization methods are discussed in detail, including histogram method, expectation-variance method and trend surface analysis.
这里详细介绍了各种测井数据标准化的方法原理，并给出了相应的实例。
Some normalization methods are discussed in detail, including histogram method, expectation-variance method and trend surface analysis.
这里详细介绍了各种测井数据标准化的方法原理，并给出了相应的实例。
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