A difference histogram-based reversible data hiding algorithm was proposed for authentication and covert communications of vector maps.

提出一种基于差值直方图的可逆数据隐藏算法，用于矢量地图的认证和隐秘通信。

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Conventional algorithms are mainly based on histogram including cumulative difference histogram (CDIF) and sequential difference histogram (SDIF).

现有的重频分选算法有累积差值直方图法(CDIF)和序列差值直方图法(SDIF)。

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To decrease embedding distortion from difference expansion, a difference histogram-based selection scheme was introduced, which gave priority to the differences with small magnitude.

为减少由扩展嵌入所引起的图形失真，借助差值直方图来选取可嵌入差值，优先选择绝对值小的差值。

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To decrease embedding distortion from difference expansion, a difference histogram-based selection scheme was introduced, which gave priority to the differences with small magnitude.

为减少由扩展嵌入所引起的图形失真，借助差值直方图来选取可嵌入差值，优先选择绝对值小的差值。

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