Mark C Colbert

US Patent:

8477149, Jul 2, 2013

Filed:

Apr 1, 2010

Appl. No.:

12/752238

Inventors:

Nicholas Beato - Orlando FL, US
Charles E. Hughes - Maitland FL, US
Mark Colbert - San Mateo CA, US
Yunjun Zhang - Orlando FL, US
Kazumasa Yamazawa - Nara, JP

Assignee:

University of Central Florida Research Foundation, Inc. - Orlando FL

International Classification:

G09G 5/00
G09G 5/02
G03F 3/08
H04N 1/38
H04N 1/40
H04N 9/74
H04N 9/75
H04N 5/445
G06K 9/40
G06K 9/62
G06K 9/38
G06K 9/32

US Classification:

345592, 345606, 345629, 345633, 345640, 345673, 348115, 348180, 348565, 348586, 348592, 358463, 358525, 358540, 382159, 382228, 382254, 382272, 382300

Abstract:

A method, system and computer readable media for real-time chromakey matting using image statistics. To identify the chroma key spectrum, the system/method executes in three stages. In an off-line training stage, the system performs semi-automatic calibration of the chroma key parameterization. In the real-time classification stage, the system estimates the alpha matte on a GPU. Finally, an optional error minimization stage improves the estimated matte, accounting for misclassifications and signal noise. Given the resulting matte, standard alpha blending composites the virtual scene with the video feed to create the illusion that both worlds coexist.

US Patent:

20150153172, Jun 4, 2015

Filed:

Jan 13, 2012

Appl. No.:

13/350254

Inventors:

Alexander Thomas STARNS - Redwood City CA, US
Jichao Li - Charlottesville VA, US
Mark Christopher Colbert - San Mateo CA, US

Assignee:

Google Inc. - Mountain View CA

International Classification:

G06K 9/36
G01C 11/02
G06T 7/60

Abstract:

Systems, methods, and computer storage mediums are provided for positioning image markers on a virtual canvas. An exemplary method includes positioning one or more virtual objects on the virtual canvas. Each virtual object corresponds to a physical object located within the physical space. The position of each virtual object on the virtual canvas approximates the location of its corresponding physical object within the physical space. A plurality of image markers are also positioned on the virtual canvas. Each image marker's position on the virtual canvas corresponds to a physical location within the physical space where a photographic image's photo capture device was located when the photographic image was captured. A link between a first image marker and a second image marker is also created. The link indicates a path, traversable by a user, within the physical space between the physical locations represented by the first and second image markers.