1
Richard L Baker, Jeffrey Bernstein, Bernd Girod, Xiancheng Yuan, Edmund Thompson: Hierarchical entropy coded lattice threshold quantization encoding method and apparatus for image and video compression. PictureTel Corporation, Hale and Dorr, September 22, 1992: US05150209 (106 worldwide citation)

A method and apparatus for encoding interframe error data in an image transmission system, and in particular in a motion compensated image transmission system for transmitting a sequence of image frames from a transmitter to a receiver, employ hierarchical entropy coded lattice threshold quantizatio ...


2
Edmund Thompson Holmes, Gerald Allan Campbell: Inhibitor barrier layers for photographic materials. Eastman Kodak Company, Arthur H Rosenstein, October 25, 1977: US04055429 (12 worldwide citation)

A photographic element comprises a support, a silver halide emulsion layer and a layer containing a polymeric scavenger for development inhibitors. The movement of development inhibitor anions from layer to layer in a film, out of the film, or into the film from processing solutions, can be controll ...


3
Yipeng Liu, Edmund Thompson: Error concealment in a video decoder. Polycom, Wong Cabello Lutsch Rutherford & Brucculeri L, November 22, 2011: US08064527 (6 worldwide citation)

The error concealment technique disclosed herein relates to the use of existing information by the decoder to conceal bitstream errors regardless of what the encoder does. Examples of existing information include, for example, the previous reference frame, macroblock information for the previous ref ...


4
Edmund Thompson, Yibo Liu: System and method for brightening video image regions to compensate for backlighting. Polycom, Blank Rome, December 12, 2017: US09843761

A videoconferencing system includes at least one processor and at least one camera. The endpoint can capture one or more images with the camera. The system can locate a region of interest within an image, such as the area surrounding the face of a person participating in a videoconference. If the fa ...


5
Edmund Thompson: Lossy channel video blur avoidance. Polycom, Blank Rome, May 23, 2017: US09661325

Blurriness in a video image transmitted over a lossy network can be reduced by filtering the decoder output to determine whether updating of the reference frame based on the current video data is indicated. An update may be appropriate if the decoder output is sharper than the contents of the displa ...


6
Yipeng Liu, Edmund Thompson: Error concealment in a video decoder. Polycom, Wong Cabello Lutsch Rutherford & Brucculeri, Pc, February 23, 2006: US20060039475-A1

The error concealment technique disclosed herein relates to the use of existing information by the decoder to conceal bitstream errors regardless of what the encoder does. Examples of existing information include, for example, the previous reference frame, macroblock information for the previous ref ...


7
Yipeng Liu, Edmund Thompson: Error Concealment In A Video Decoder. Polycom, February 9, 2012: US20120033739-A1

The error concealment technique disclosed herein relates to the use of existing information by the decoder to conceal bitstream errors regardless of what the encoder does. Examples of existing information include, for example, the previous reference frame, macroblock information for the previous ref ...


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