公开(公告)号：US5987459A

公开(公告)日：1999-11-16

申请号：US818535

申请日：1997-03-14

Applicant: Mitchell D. Swanson ,  Ahmed H. Tewfik ,  Srinath Hosur

Inventor： Mitchell D. Swanson ,  Ahmed H. Tewfik ,  Srinath Hosur

IPC: G06F17/30

CPC classification number: G06F17/30256 ,  G06F17/3028 ,  Y10S707/99933 ,  Y10S707/99936 ,  Y10S707/99939

Abstract: A computerized image and document management system for tent-based retrieval integrating content-based retrieval support directly into the compressed files. The system minimizes a weighted sum of the expected size of the compressed files and the expected query response time. Object searching of documents stored by the system is possible on a scalable resolution basis. The system includes a novel object representation based on embedded prototypes that provides for high-quality browsing of retrieval images at low bit rates.

Abstract translation: 一种用于帐篷式检索的计算机图像和文档管理系统，将基于内容的检索支持直接集成到压缩文件中。 系统最小化压缩文件的预期大小和预期查询响应时间的加权和。 可以在可缩放分辨率的基础上对系统存储的文档进行对象搜索。 该系统包括基于嵌入式原型的新型对象表示，其以低比特率提供高质量浏览检索图像。

公开(公告)号：US06226387B1

公开(公告)日：2001-05-01

申请号：US08921931

申请日：1997-08-27

Applicant: Ahmed H. Tewfik ,  Mitchell D. Swanson ,  Bin Zhu

Inventor： Ahmed H. Tewfik ,  Mitchell D. Swanson ,  Bin Zhu

IPC: G06K900

CPC classification number: G06T1/0085 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0061 ,  G06T2201/0202 ,  H04N1/32154 ,  H04N1/3217 ,  H04N1/32192 ,  H04N19/117 ,  H04N19/132 ,  H04N19/154 ,  H04N19/172 ,  H04N19/176 ,  H04N19/179 ,  H04N19/63 ,  H04N21/23892 ,  H04N21/8358

Abstract: A method and apparatus for the scene-based watermarking of video data is disclosed. In one embodiment, each of a number of frames of a scene of video host data undergoes a temporal wavelet transform, from which blocks are extracted. The blocks undergo perceptual masking in the frequency domain, such that a watermark is embedded therein. Once the watermark block is taken out of the frequency domain, a spatial mask of the original block is weighted to the watermark block, and added to the original block to obtain the watermarked block.

Abstract translation: 公开了一种用于视频数据的基于场景的水印的方法和装置。 在一个实施例中，视频主机数据的场景的多个帧中的每一个经历时间小波变换，从中提取块。 这些块在频域中进行感知掩蔽，使得嵌入水印。 一旦将水印块从频域中取出，将原始块的空间掩码加权到水印块，并将其加到原始块中以获得水印块。