Baker & Hostetler LLP
Video coding system with efficient processing of zooming transitions in video
A video coder, responsive to detection of a zooming transition in source video, estimates a scale factor and a zooming rectangle for a reference frame, scales content of the reference frame within the zooming rectangle according to the scaling factor, codes content of a new frame of the source video predictively using the scaled reference frame as a basis of prediction, and transmits coded video data obtained from the predictive coding to a decoder along with an indication of the scaling factor and zooming rectangle.
Apple Inc.
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Xiaosong Hsi-Jung Chris Y.
Zhou Wu Chung