System for auto-HDR capture decision making
First Claim
Patent Images
1. A method for invoking a high dynamic range (“
- HDR”
) mode in a camera, the method comprising;
detecting that the camera is operating in a preview mode;
determining a dynamic range, auto exposure (“
AE”
) metadata, and a motion level associated with a plurality of frames captured in the preview mode, the determining of at least one of the dynamic range, the AE metadata, or the motion level by measuring the dynamic range, the AE metadata, or the motion level, respectively, of the plurality of frames captured in the preview mode;
determining, based on the measuring, a stability value of at least one of the dynamic range, the AE metadata, or the motion level; and
invoking the HDR mode when each of the determined dynamic range, the AE metadata, and the motion level is above a first threshold value, a second threshold value, and a third threshold value, respectively.
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Abstract
A method and apparatus for invoking a High Dynamic Range (“HDR”) mode in a camera are disclosed. The method comprises detecting that the camera is operating in a preview mode. The method further comprises determining a dynamic range, Auto Exposure (“AE”) metadata, and a motion level associated with a plurality of frames captured in the preview mode. Finally, the method comprises invoking the HDR mode when each of the determined dynamic range, the AE metadata, and the motion level is above a first threshold value, a second threshold value, and a third threshold value, respectively.
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Citations
16 Claims
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1. A method for invoking a high dynamic range (“
- HDR”
) mode in a camera, the method comprising;detecting that the camera is operating in a preview mode; determining a dynamic range, auto exposure (“
AE”
) metadata, and a motion level associated with a plurality of frames captured in the preview mode, the determining of at least one of the dynamic range, the AE metadata, or the motion level by measuring the dynamic range, the AE metadata, or the motion level, respectively, of the plurality of frames captured in the preview mode;determining, based on the measuring, a stability value of at least one of the dynamic range, the AE metadata, or the motion level; and invoking the HDR mode when each of the determined dynamic range, the AE metadata, and the motion level is above a first threshold value, a second threshold value, and a third threshold value, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- HDR”
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8. An apparatus for invoking a high dynamic range (“
- HDR”
) mode, the apparatus comprising;an image sensor configured to detect that the apparatus is in a preview mode; an image-processing engine configured to determine a dynamic range, auto-exposure (“
AE”
) metadata, and a motion level associated with a plurality of frames captured in the preview mode;a filter configured to; determine, based on the measured dynamic range, a stability value of the dynamic range for the plurality of frames captured in a specified time period, the stability value predicting a future stability of the measured dynamic range; determine, based on the measured AE metadata, a stability value of the AE metadata for the plurality of frames captured in a specified time period, the stability value predicting a future stability of the measured AE metadata;
ordetermine, based on the determined motion level, a stability value of the motion level for the plurality of frames captured in a specified time period, the stability value predicting a future stability of the measured motion level; and processing circuitry configured to invoke the HDR mode when each of the determined dynamic range, the AE metadata, and the motion level is above a first threshold value, a second threshold value, and a third threshold value, respectively. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
- HDR”
Specification