METHOD AND SYSTEM FOR VISUAL TRACKING OF A SUBJECT FOR AUTOMATIC METERING USING A MOBILE DEVICE
First Claim
1. A method of adjusting camera parameters for image capture using a mobile device, said method comprising:
- using a camera system, selecting a subject within a field of view of said mobile device during a first time period;
generating and storing a visual model on said mobile device responsive to said detecting of said subject, wherein said visual model is operable to represent said subject during a second time period wherein said subject is outside of said field of view of said mobile device;
estimating a region of interest for capturing an image of said subject during a third time period by tracking said subject in real-time using said visual model, wherein said subject is within said field of view of said mobile device during said third time period; and
adjusting camera parameters responsive to said region of interest prior to image capture.
1 Assignment
0 Petitions
Accused Products
Abstract
Embodiments of the present invention provide a novel solution that enables mobile devices to continuously track interesting subjects by creating dynamic visual models that can be used to detect and track subjects in-real time through total occlusion or even if a subject temporarily leaves the mobile device'"'"'s field of view. Additionally, embodiments of the present invention use an online learning scheme that dynamically adjusts tracking procedures responsive to any appearance and/or environmental changes associated with an interesting subject that may occur over a period of time. In this manner, embodiments of the present invention can determine a more optimal focus position that allows movement by either the mobile device or the subject during the performance of auto-focusing procedures and also enables other camera parameters to properly calibrate (meter) themselves based on the focus position determined.
-
Citations
21 Claims
-
1. A method of adjusting camera parameters for image capture using a mobile device, said method comprising:
-
using a camera system, selecting a subject within a field of view of said mobile device during a first time period; generating and storing a visual model on said mobile device responsive to said detecting of said subject, wherein said visual model is operable to represent said subject during a second time period wherein said subject is outside of said field of view of said mobile device; estimating a region of interest for capturing an image of said subject during a third time period by tracking said subject in real-time using said visual model, wherein said subject is within said field of view of said mobile device during said third time period; and adjusting camera parameters responsive to said region of interest prior to image capture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A system for adjusting camera parameters for image capture using a mobile device, said system comprising:
-
a detection module operable to detect a preselected subject identified using user input, wherein said preselected subject is within a field of view of said mobile device during a first time period; a model generation module operable to generate and store a visual model in memory resident on said mobile device responsive to a detection of said preselected subject, wherein said visual model is operable to represent said preselected subject during a second time period wherein said preselected subject is outside of said field of view of said mobile device; a tracking module operable to estimate a region of interest for capturing an image of said preselected subject during a third time period by tracking said preselected subject in real-time using said visual model, wherein said preselected subject is within said field of view of said mobile device during said third time period; and an adjustment module operable to adjust camera parameters responsive to said region of interest prior to image capture. - View Dependent Claims (10, 11, 12, 13, 14)
-
-
15. A method of capturing an image using a mobile device, said method comprising:
-
using a camera system, detecting a first subject within a field of view of said mobile device during a first time period; generating and storing a first visual model on said mobile device responsive to a detection of said first subject, wherein said first visual model is operable to dynamically represent said first subject during a second time period wherein said first subject is outside of said field of view of said mobile device; estimating a first focus position for capturing an image of said first subject during a third time period by tracking said first subject in real-time using said first visual model, wherein said first subject is within said field of view of said mobile device during said third time period; adjusting camera parameters responsive to said first optimal focus position prior to image capture; and capturing said image using said camera parameters. - View Dependent Claims (16, 17, 18, 19, 20, 21)
-
Specification