Varying camera self-determination based on subject motion
View Patent ↗In a method and digital camera, an initial set of evaluation images are captured. A plurality of characteristics of the initial set of evaluation images are assessed to provide a first assessment. The characteristics include subject motion between the initial set of evaluation images. When the subject motion is in excess of a predetermined threshold, a final capture state of the camera is set responsive to the first assessment. When the subject motion is less than the predetermined threshold, the evaluation images are analyzed to provide analysis results and the final capture state of the camera is set responsive to the first assessment and the analysis results.
1. A method for setting a camera for image capture, said method comprising the steps of:
capturing an initial set of two or more evaluation images;
assessing a plurality of characteristics of said initial set of evaluation images to provide a first assessment, said characteristics including subject motion vectors between at least two of said initial set of evaluation images;
when said subject motion vectors are in excess of a predetermined threshold, setting a final capture state of said camera responsive to said first assessment and enabling immediate capture of a final image without further assessment;
when said subject motion vectors are less than said predetermined threshold:
(a) providing a second assessment of the evaluation images;
(b) analyzing the second assessment; and when said subject motion is less than said predetermined threshold,
(i) presenting results of said analyzing to a user as a simple choice between offered alternatives, based on said analyzing; and
(ii) accepting user choice input following said presenting; and
(c) setting said final capture state of said camera responsive to said user input.
2. The method of claim 1 wherein said second assessment in part (b) further comprises determining one or more additional characteristics from said initial set of evaluation images, said determining being more computationally intensive than the first said assessment.
3. The method of claim 2 wherein said additional characteristics include differences in edge maps.
4. The method of claim 1 wherein said characteristics include one or more of: depth of field, color balance, and focus.
5. The method of claim 1 further comprising classifying said scene in one of a plurality of predetermined classifications based on said analyzing to provide a scene classification, and wherein said capture state is responsive to said scene classification.
6. The method of claim 5 wherein said assessing of said plurality of characteristics further comprises ascertaining, exposure range, focus, white balance, and skin detection.
7. The method of claim 1 wherein said camera is in a default capture state during said capturing of said initial set of evaluation images and wherein each of said capture states includes settings of a plurality of: focal length, exposure time, focus distance, aperture, white balance adjustment, and flash state.
8. The method of claim 1 wherein one or more additional evaluation images are captured after the first assessment of evaluation images and are added to the set of evaluation images before the second assessment.