发明申请
- 专利标题: Class of symmetric lattices for quantization and data embedding
- 专利标题(中): 对称格子类用于量化和数据嵌入
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申请号: US10858967申请日: 2004-06-01
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公开(公告)号: US20050265575A1公开(公告)日: 2005-12-01
- 发明人: Kamal Jain , Ramarathnam Venkatesan , M. Mihcak
- 申请人: Kamal Jain , Ramarathnam Venkatesan , M. Mihcak
- 申请人地址: US WA Redmond 98052
- 专利权人: Micrososft Corporation
- 当前专利权人: Micrososft Corporation
- 当前专利权人地址: US WA Redmond 98052
- 主分类号: G06T1/00
- IPC分类号: G06T1/00 ; H04N1/387 ; G06K9/00 ; G06K9/36
摘要:
Methods and systems for quantization and data embedding are described. In at least some embodiments, a transform is applied on an image that is to be watermarked and statistics associated with the image are computed. The computed statistics are quantized using a symmetric lattice, and a watermark is computed using the lattice quantized statistics. The watermark is then inserted into the image.
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