1
Ingemar J Cox, Joseph J Kilian, Talal G Shamoon: Secure spread spectrum watermarking for multimedia data. NEC Research Institute July 27, 1999: US05930369 (396 worldwide citation)

Digital watermarking of audio, image, video or multimedia data is achieved by inserting the watermark into the perceptually significant components of a decomposition of the data in a manner so as to be visually imperceptible. In a preferred method, a frequency spectral image of the data, preferably ...


2
Ingemar J Cox, Matthew L Miller, Kazuyoshi Tanaka, Yutaka Wakasu: Digital watermarking. NEC Research Institute, NEC Corporation June 22, 1999: US05915027 (354 worldwide citation)

Digital watermarking of data, including image, video and audio data, is performed by repeatedly inserting the watermark into subregions or subimages of the data. Similarly, the watermark is repeatedly extracted from the subregions of the data.


3
Ingemar J Cox: Spread spectrum watermark for embedded signalling. NEC Research Institute December 8, 1998: US05848155 (254 worldwide citation)

A watermark is embedded into audio/video/image/multimedia data using spread spectrum methodology. The watermark is extracted from watermarked data without the use of an original or unwatermarked version of the data by using spatial or temporal local averaging of the frequency coefficients of the wat ...


4
Jeffrey A Bloom, Ingemar J Cox, Matthew L Miller: Method for data preparation and watermark insertion. Signafy December 18, 2001: US06332194 (159 worldwide citation)

A method for data preparation and watermark insertion. The method includes the step of preparing the data at a first time by manipulating at least one set of the data characteristics for subsequent insertion of a first watermark. In a preferred embodiment of the method of the present invention the m ...


5
Ingemar J Cox, Matthew L Miller, Ryoma Oami: Robust digital watermarking. NEC Research Institute, NEC Corporation November 28, 2000: US06154571 (151 worldwide citation)

A watermarking procedure that is applicable to images, audio, video and multimedia data to be watermarked divides the data to be watermarked into a set of n.times.n blocks, such as the 8.times.8 blocks of MPEG. The same watermark signal can be distributed throughout the set of blocks in a large vari ...


6
Ingemar J Cox: Watermarking of image data using MPEG/JPEG coefficients. NEC Research Institute May 30, 2000: US06069914 (150 worldwide citation)

A watermark is embedded into video/image/multimedia data using spread spectrum methodology. The watermark is extracted from watermarked data without the use of an original or unwatermarked version of the data by using MPEG/JPEG coefficients. The image to be watermarked is divided into subimages. Eac ...


7
Jeffrey A Bloom, Ingemar J Cox, Matthew L Miller, Min Wu, Ching Yung Lin, Yui Man Lui: Rotation, scale, and translation resilient public watermarking for images using a log-polar fourier transform. Signafy August 28, 2001: US06282300 (122 worldwide citation)

A method for detecting a watermark signal in digital image data. The detecting method includes the steps of: computing a log-polar Fourier transform of the image data to obtain a log-polar Fourier spectrum; projecting the log-polar Fourier spectrum down to a lower dimensional space to obtain an extr ...


8
Ingemar J Cox, Matthew L Miller: Field-based watermark insertion and detection. Signafy November 23, 1999: US05991426 (113 worldwide citation)

A digital watermark is inserted into multimedia data containing two image fields by placing a positive watermark into a first field and a negative watermark into a second field. The positive watermark and negative watermark are opposite of one another. The two fields can be interlaced fields of a fi ...


9
John P Lewis, Maximillian A Ott, Ingemar J Cox: Videoconference system using a virtual camera image. NEC USA, NEC Research Institute October 25, 1994: US05359362 (89 worldwide citation)

A teleconferencing video system uses two cameras at each station symmetrically positioned on opposite sides of the optical axis between the speaker and the monitor used to produce an image of the listener. The two cameras are used to provide from the two images observed by the cameras a virtual imag ...


10
Ingemar J Cox, Joseph J Kilian, Talal G Shamoon: Secure spread spectrum watermarking for multimedia data. NEC Research Institute March 27, 2001: US06208735 (83 worldwide citation)

Digital watermarking of audio, image, video or multimedia data is achieved by inserting the watermark into the perceptually significant components of a decomposition of the data in a manner so as to be visually imperceptible. In a preferred method, a frequency spectral image of the data, preferably ...



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