Digital watermarking technology is a common scheme to secure the copyright of digital vector map.

数字矢量地图水印技术是一种解决数字矢量地图版权保护问题的常用手段。

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Digital watermarking technology is a common scheme to secure the copyright of digital vector map.

数字矢量地图水印技术是一种解决数字矢量地图版权保护问题的常用手段。

youdao