Patent ID: 9445102
Filing Date: 2016-09-13
CPC Classification: H04N

Claim Text:
1. An apparatus for estimating model parameters of a rate- or distortion-quantization model function so as to approximate an actual rate- or distortion-quantization function of a video encoder for a frame sequence, comprising an updater configured to perform a prediction of a time-discrete Kalman filter, a state of which defines a parameter estimate for the model parameters to achieve a predicted state of the time-discrete Kalman filter for a current frame of the frame sequence from a state of the time-discrete Kalman filter for a previous frame of the frame sequence; a first corrector configured to determine a complexity measure of the current frame k, and perform a correction of the time-discrete Kalman filter using a measurement value which depends on the complexity measure determined so as to achieve a primarily corrected state of the time-discrete Kalman filter from the predicted state; and a second corrector configured to perform a correction of the time-discrete Kalman filter using a measurement value which depends on an actual coding rate or distortion of the video encoder in encoding the current frame using a predetermined quantization, wherein at least one of the updater, the first corrector and the second corrector comprises a hardware implementation.