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AssigneeApple Inc.
InventorsAdriana Dumitras, James Oliver Normile, Ryan R. Salsbury
Estimating the term…
Methods for pre-processing video sequences prior to compression to provide data reduction of the video sequence. In addition, after compression of the pre-processed video sequence, the bit rate of the pre-processed and compressed video sequence will be lower than the bit rate of the video sequence after compression but without pre-processing. A temporal filtering method is provided for pre-processing of video frames of a video sequence. In the method, pixel values of successive frames are filtered when the difference in the pixel values between the successive frames are within high and low threshold values. The high and low threshold values are determined adaptively depending on the illumination level of a video frame to provide variability of filtering strength depending on the illumination levels of a video frame.
1-38. (canceled)
A method comprising:
A method comprising:
A computer readable medium storing a computer program that is executable by at least one processor, the computer program comprising sets of instructions for:
The computer readable medium 66, wherein computing the chrominance value comprises computing a U chrominance difference between a U chrominance value for a set of pixels in the current video picture and a U chrominance value for a set of pixels in the next video picture.
Dependencies are inferred from the claim text.