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Invention Grant
US07934264B2 Methods, systems, and computer program products for detecting alteration of audio or image data 有权
用于检测音频或图像数据更改的方法，系统和计算机程序产品

Methods, systems, and computer program products for detecting alteration of audio or image data
Abstract:
Using metadata to detect alteration of data. A first set of metadata characteristics including at least one respective semantic description are recorded for a first set of data representing original data. A second set of metadata characteristics including at least one corresponding semantic description are recorded for a second set of data representing data under test. The first and second sets of metadata characteristics are compared. If the first and second sets of metadata characteristics are not identical, these sets are processed to identify locations in the first set of data that have been altered. Using the at least one semantic description for the first set of data and the at least one corresponding semantic description for the second set of data, one or more metadata characteristics that have changed from the first set of data to the second set of data are identified.
Abstract(Chinese):

使用元数据检测数据的更改。 对于表示原始数据的第一组数据记录包括至少一个相应语义描述的第一组元数据特征。 对于表示正在测试的数据的第二组数据，记录包括至少一个对应的语义描述的第二组元数据特征。 比较第一组和第二组元数据特征。 如果第一和第二组元数据特征不相同，则处理这些集合以识别已经被改变的第一组数据中的位置。 使用用于第一组数据的至少一个语义描述和用于第二组数据的至少一个对应语义描述，识别从第一组数据到第二组数据已经改变的一个或多个元数据特征 。

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