Ping Lai Yu

US Patent:

7548658, Jun 16, 2009

Filed:

Sep 24, 2003

Appl. No.:

10/670415

Inventors:

Leonid I. Rudin - San Marino CA, US
Ping Yu - Los Angeles CA, US

Assignee:

Cognitech, Inc. - Pasadena CA

International Classification:

G06K 9/46

US Classification:

382246, 382244, 382245, 37524012, 37524016, 37524018

Abstract:

Lossless video data compression is performed in real time at the data rate of incoming real time video data in a process employing a minimum number of computational steps for each video pixel. A first step is to convert each pixel 8-bit byte to a difference byte representing the difference between the pixel and its immediate predecessor in a serialized stream of the pixel bytes. Thus, each 8-bit pixel byte is subtracted from its predecessor. This step reduces the dynamic range of the data. A next step is to discard any carry bits generated in the subtraction process of two's complement arithmetic. This reduces the data by a factor of two. Finally, the 8-bit difference pixel bytes thus produced are subject to a maximum entropy encoding process. Such a maximum entropy encoding process may be referred to as a minimum length encoding process. One example is Huffman encoding.

US Patent:

7831533, Nov 9, 2010

Filed:

Feb 5, 2008

Appl. No.:

12/026487

Inventors:

Leonid I. Rudin - San Marino CA, US
Jose Luis Lisani - Pasadena CA, US
Jean Michel Morel - Pasadena CA, US
Ping Yu - Pasadena CA, US

Assignee:

Cognitech, Inc. - Pasadena CA

International Classification:

G06N 5/00

US Classification:

706 45

Abstract:

Methods and systems for grouping video frames. The video frames may be from a multiplexed stream of video frames from a plurality of video sources. In some embodiments video frames are grouped by determining if the video frames share meaningful modes for values representative of features of the video frames.

US Patent:

8200598, Jun 12, 2012

Filed:

Sep 13, 2010

Appl. No.:

12/880989

Inventors:

Leonid I. Rudin - San Marino CA, US
Jose Luis Lisani - Pasadena CA, US
Jean Michel Morel - Pasadena CA, US
Ping Yu - Pasadena CA, US

Assignee:

Cognitech, Inc. - Pasadena CA

International Classification:

G06N 5/00

US Classification:

706 45

Abstract:

Methods and systems for grouping video frames. The video frames may be from a multiplexed stream of video frames from a plurality of video sources. In some embodiments video frames are grouped by determining if the video frames share meaningful modes for values representative of features of the video frames.

US Patent:

8238679, Aug 7, 2012

Filed:

Jun 9, 2009

Appl. No.:

12/481207

Inventors:

Leonid I. Rudin - San Marino CA, US
Ping Yu - Los Angeles CA, US

Assignee:

Cognitech, Inc. - Pasadena CA

International Classification:

G06K 9/46

US Classification:

382244, 382245, 382246

Abstract:

Lossless video data compression is performed in real time at the data rate of incoming real time video data in a process employing a minimum number of computational steps for each video pixel. A first step is to convert each pixel 8-bit byte to a difference byte representing the difference between the pixel and its immediate predecessor in a serialized stream of the pixel bytes. Thus, each 8-bit pixel byte is subtracted from its predecessor. This step reduces the dynamic range of the data. A next step is to discard any carry bits generated in the subtraction process of two's complement arithmetic. This reduces the data by a factor of two. Finally, the 8-bit difference pixel bytes thus produced are subject to a maximum entropy encoding process. Such a maximum entropy encoding process may be referred to as a minimum length encoding process. One example is Huffman encoding.

US Patent:

20110169946, Jul 14, 2011

Filed:

Jan 6, 2010

Appl. No.:

12/683185

Inventors:

LEONID I. RUDIN - San Marino CA, US
Ping Yu - Castaic CA, US

International Classification:

H04N 7/18
G01S 5/14
G01S 19/14

US Classification:

348135, 348E07085

Abstract:

Determining GPS coordinates of some image point(s) positions in at least two images using a processor configured by program instructions. Receiving position information of some of the positions where an image capture device captured an image. Determining geometry by triangulating various registration objects in the images. Determining GPS coordinates of the image point(s) positions in at least one of the images. Saving GPS coordinates to memory. This system and method may be used to determine GPS coordinates of objects in an image.

US Patent:

20130058402, Mar 7, 2013

Filed:

Aug 6, 2012

Appl. No.:

13/567856

Inventors:

Leonid I. Rudin - San Marino CA, US
Ping Yu - Los Angeles CA, US

Assignee:

Cognitech, Inc. - Pasadena CA

International Classification:

H04N 7/26

US Classification:

37524008, 375E072

Abstract:

Lossless video data compression is performed in real time at the data rate of incoming real time video data in a process employing a minimum number of computational steps for each video pixel. Each pixel 8-bit byte is converted to a difference byte representing the difference between the pixel and its immediate predecessor in a serialized stream of the pixel bytes. This reduces the dynamic range of the data. Any carry bits generated in the subtraction process of two's complement arithmetic are discarded. This reduces the data by a factor of two. Finally, the 8-bit difference pixel bytes thus produced are subject to a maximum entropy encoding process. Such a maximum entropy encoding process may be referred to as a minimum length encoding process.

US Patent:

7328198, Feb 5, 2008

Filed:

Dec 31, 2004

Appl. No.:

11/028470

Inventors:

Leonid I. Rudin - San Marino CA, US
Jose Luis Lisani - Pasadena CA, US
Jean Michel Morel - Pasadena CA, US
Ping Yu - Pasadena CA, US

Assignee:

Cognitech, Inc. - Pasadena CA

International Classification:

G06N 5/00

US Classification:

706 20, 345473, 370352, 370252

Abstract:

Methods and systems for grouping video frames. The video frames may be from a multiplexed stream of video frames from a plurality of video sources. In some embodiments video frames are grouped by determining if the video frames share meaningful modes for values representative of features of the video frames.