Apparatus, and associated method, for stabilizing a video sequence
AssigneeBlackBerry Limited
InventorsBrett Stuart Foster, Bryan Andrew Krawetz, Mark David Rushby, Gael Jaffrain, Sung Ho Hong, Joshua Lucien Daigle, Gang Xue
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Abstract
An apparatus, and an associated method, for facilitating stabilization of a recorded video sequence, formed of captured image frames. Captured image frames are cropped by a frame cropper. Cropping of an image is dependent upon lighting conditions. Upon the occurrence of a low-light, lighting condition, the amount of cropping is altered. And, when acceptable lighting conditions return, the amount of cropping is again altered, all in a manner to facilitate video stabilization.
Claims11
A method for facilitating formation of a video sequence formed of a plurality of captured image frames, said method comprising:
- selecting cropping of a captured image frame of the plurality of captured image frames, cropping selection dependent upon a gain indicia detected with respect to the captured image frame, said selecting comprising generating a motion vector of a value determinative of cropping of the captured image and dependent upon the gain indicia associated with the captured image;
- and
- cropping the captured image in a manner conforming to the cropping selected during said selecting, wherein the gain indicia is indicative of low-light lighting conditions and the cropping selected during said selection is operative to change an initial value of the motion vector to a selected value indicative of low-light lighting conditions in a multi-step change using at lease one intermediate motion vector.
An apparatus for facilitating formation of a video sequence formed of a plurality captured image frames, said apparatus comprising:
- an image frame cropper configured to crop a perimeter portion of a captured image frame of the plurality of captured image frames to form a cropped image frame;
- and
- a controller configured to control cropping of the captured image frame by said image frame cropper, cropping of the captured image frame dependent upon a gain indicia associated with the captured image frame, wherein said controller is operative to generate a motion vector of a value determinative of cropping of the perimeter portion of the captured image, said value being dependent upon the gain indicia associated with the captured image frame, and further wherein when the gain indicia is of low-light lighting conditions, said controller is configured to change the value of the motion vector from an initial value to a selected value indicative of low-light conditions in a multi-step change using at least one intermediate motion vector.
A non-transitory tangible computer-readable medium containing program instructions stored thereon which facilitate image cropping by a camera apparatus when executed by one or more processors associated therewith, the non-transitory tangible computer-readable medium comprising:
- a code portion for facilitating selection of cropping of a captured image frame of the plurality of captured image frames, cropping selection dependent upon a gain indicia detected with respect to the captured image frame, said selecting comprising generating a motion vector of a value determinative of cropping of the captured image and dependent upon the gain indicia associated with the captured image;
- and
- a code portion for cropping the captured image in a manner conforming to the cropping selected during said selecting, wherein the gain indicia is indicative of low-light lighting conditions and the cropping selected during said selection is operative to change an initial value of the motion vector to a selected value indicative of low-light lighting conditions in a multi-step change using at lease one intermediate motion vector.
Dependencies are inferred from the claim text.