Atul Puri

6339618, Jan 15, 2002

May 31, 2000

09/584176

Atul Puri - Riverdale NY
A. Murat Tekalp - Rochester NY
Petrus J. L. van Beck - Vancouver WA

ATT Corp. - New York NY

H04N 736

37524016, 382243

A method and apparatus for coding video data permits coding of video information with optional, enhanced functionalities. Video data is coded as base layer data and enhancement layer data. The base layer data includes convention motion compensated transform encoded texture and motion vector data. Optional enhancement layer data contains mesh node vector data. Mesh node vector data of the enhancement layer may be predicted based on motion vectors of the base layer. Thus, simple decoders may decode the base layer data and obtain a basic representation of the coded video data. However, more powerful decoders may decode both the base layer and enhanced layer to obtain decoded video permitting functionalities. An embodiment of the present invention provides a back channel that permits a decoder to affect how mesh node coding is performed in the encoder. The decoder may command the encoder to reduce or eliminate encoding of mesh node motion vectors.

6459732, Oct 1, 2002

Jan 9, 2001

09/756141

Tsuhan Chen - Middletown NJ
Atul Puri - Riverdale NY
Robert Lewis Schmidt - Howell NJ

ATT Corp. - New York NY

H04B 166

37524008, 37524024, 348592, 382164

A technique for implicitly encoding shape information by using a chroma-key color. A bounding box is created enclosing the video object. The bounding box is extended to be of size of next integer multiple of macroblock size and divided into a plurality of macroblocks. For each boundary macroblock, each pixel outside the object is replaced with the chroma-key color to implicitly encode shape information. Pixel data for boundary macroblocks and macroblocks inside the object are DCT transformed, scaled and motion compensated. A finer quantizer (smaller quantizer) is used for boundary macroblocks to improve image quality. A first_shape_code can be used to identify each macroblock as either 1) inside the object; 2) outside the object; or 3) on the object boundary. To improve data compression and achieve low complexity shape extraction with DCT and motion compensation, a first_shape_code is sent for all macroblocks, and only macroblocks that are inside the object or on the object boundary are coded. The decoding system decodes the first_shape_code and, if necessary, the DCT and motion compensation information.

6810086, Oct 26, 2004

Jun 5, 2001

09/874877

Atul Puri - Riverdale NY
Mehmet Reha Civanlar - Middletown NJ

ATT Corp. - New York NY

H04N 712

37524029

A system and method of removing noise in a bitstream is disclosed. The system and method are most applicable to removing noise in a bitstream wherein the bitstream is encoded after being segmented into portions based on predefined classifications or models. Based on the segment classifications, each segment or portion is encoded with a different encoder associated with the portion model and chosen from a plurality of encoders. The coded bit-stream for each segment includes information regarding which encoder was used to encode that segment. A circuit for removing noise in video content comprises a first filter connected to a first input switch and a first output switch, the first filter being in parallel with a first pass-through line, a second filter connected to a second input switch and a second output switch, the second filter connected in parallel with a second pass-through line, and a third filter connected to a third input switch in a third output switch. The third filter is connected in parallel with a third pass-through line, wherein the first output switch is connected to the second input switch and the second output switch is connected to the third input switch. The first input switch, first output switch, second input switch, second output switch, third input switch, and third output switch are controlled to either filter each video portion or not filter each video portion according to descriptors related to the video content.

6909745, Jun 21, 2005

Jun 5, 2001

09/874873

Atul Puri - Riverdale NY, US
Mehmet Reha Civanlar - Middletown NJ, US

AT&T Corp. - New York NY

H04N007/12

37524001, 382236, 3483841

A system for content adaptive encoding and decoding video is disclosed. The system comprises modules for segmenting video content into segments based on predefined classifications or models. Examples of such classifications comprise action scenes, slow scenes, low or high detail scenes, and brightness of the scenes. Based on the segment classifications, each segment is encoded with a different encoder chosen from a plurality of encoders. Each encoder is associated with a model. The chosen encoder is particularly suited to encoding the unique subject matter of the segment. The coded bit-stream for each segment includes information regarding which encoder was used to encode that segment. A matching decoder of a plurality of decoders is chosen using the information in the coded bitstream to decode each segment using a decoder suited for the classification or model of the segment. If scenes exist which do not fall in a predefined classification, or where classification is more difficult based on the scene content, these scenes are segmented, coded and decoded using a generic coder and decoder.

6968006, Nov 22, 2005

Jun 5, 2001

09/874878

Atul Puri - Riverdale NY, US
Mehmet Reha Civanlar - Middletown NJ, US

AT&T Corp. - New York NY

H04N007/12

37524008

The invention relates to a method of receiving an encoded bitstream wherein video content is segmented into portions based on predefined classifications or models. Based on the segment classifications, each segment or portion is encoded with a different encoder chosen from a plurality of encoders, each encoder being associated with a model. The chosen encoder is particularly suited to encoding the unique subject matter of the segment. The coded bit-stream for each segment includes information regarding which encoder was used to encode that segment. A matching decoder of a plurality of decoders is chosen using the information in the coded bitstream to decode each segment using a decoder suited for the classification or model of the segment. If scenes exist which do not fall in a predefined classification, or where classification is more difficult based on the scene content, these scenes are segmented, coded and decoded using a generic coder and decoder.

6970513, Nov 29, 2005

Jun 5, 2001

09/874879

Atul Puri - Riverdale NY, US
Mehmet Reha Civanlar - Middletown NJ, US

AT&T Corp. - New York NY

H04N007/18

37524025, 37524029

A system for content adaptively decoding video content is disclosed. The system receives a bitstream which was segmented into segments based on predefined classifications. Examples of such classifications include action scenes, slow scenes, low or high detail scenes, and brightness of the scenes. Based on the segment classifications, each segment was encoded with a different encoder chosen from a plurality of encoders. The chosen encoder is particularly suited to encoding the unique subject matter of the segment. The coded bit-stream for each segment includes information regarding which encoder was used to encode that segment. A matching decoder of a plurality of decoders is chosen using the information in the coded bitstream to decode each segment using a decoder suited for the classification of the segment. If scenes exist which do not fall in a predefined classification, or where classification is more difficult based on the scene content, these scenes are segmented, coded and decoded using a generic coder and decoder.

7143434, Nov 28, 2006

Nov 5, 1999

09/831218

Seungyup Paek - New York NY, US
Ana Benitez - New York NY, US
Shih-Fu Chang - New York NY, US
Atul Puri - Riverdale NY, US
Chung-Sheng Li - Ossining NY, US
John R. Smith - New Hyde Park NY, US
Lawrence Bergman - Mount Kisco NY, US

G09G 5/00
H04B 1/66
G06K 9/00

725142, 345619, 37524012, 382181, 382203

The present invention relates to a system for generating a description record from multimedia information including, e. g. , video data. A multimedia information input interface is used to receive multimedia information. A computer processor receives the multimedia information, processes the video information by performing video object extraction processing to generate video object descriptions from the video information, processes the generated video object descriptions by object hierarchy construction and extraction processing to generate video object hierarchy descriptions, and processes the generated video object descriptions by entity relation graph descriptions.

7185049, Feb 27, 2007

Feb 1, 2000

09/495175

Ana Belen Benitez - New York NY, US
Shih-Fu Chang - New York NY, US
Qian Huang - Ocean NJ, US
Seungyup Paek - New York NY, US
Atul Puri - Riverdale NY, US

AT&T Corp. - New York NY

G06F 15/16
G06F 7/00

709203, 707103

The invention provides a system and method for integrating multimedia descriptions in a way that allows humans, software components or devices to easily identify, represent, manage, retrieve, and categorize the multimedia content. In this manner, a user who may be interested in locating a specific piece of multimedia content from a database, Internet, or broadcast media, for example, may search for and find the multimedia content. In this regard, the invention provides a system and method that receives multimedia content and separates the multimedia content into separate components which are assigned to multimedia categories, such as image, video, audio, synthetic and text. Within each of the multimedia categories, the multimedia content is classified and descriptions of the multimedia content are generated. The descriptions are then formatted, integrated, using a multimedia integration description scheme, and the multimedia integration description is generated for the multimedia content. The multimedia description is then stored into a database.