Download Digital Video for Teacher Education: Research and Practice by Brendan Calandra, Peter J. Rich PDF

By Brendan Calandra, Peter J. Rich

Electronic video use is turning into frequent in instructor schooling as a device to aid increase instructing and studying and for assessing powerful instructing. well timed and accomplished, this quantity brings jointly most sensible students from a number of disciplines to supply sound theoretical frameworks, research-based help, and transparent useful suggestion on a number of certain methods to utilizing electronic video in instructor teaching programs. half I offers with using video for instructor studying. half II makes a speciality of the position performed via these different than

teachers within the potent use of electronic video in instructor teaching programs. half III addresses the right way to administer video for instructor schooling. Exploring the complexities of successfully and correctly integrating electronic video into instructor improvement at numerous levels, this publication is a must have source for students and pros within the box.

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All hypotheses are jointly filtered to determine the final prediction signal. The linear filter is described by the vector valued transfer function In particular, is a row vector with N scalar transfer functions. The power spectrum of the prediction error with the linear filter is Motion-Compensated Prediction with Complementary Hypotheses 47 In the following, we investigate the performance of motion compensation with complementary hypotheses for both the averaging filter and a Wiener fil­ ter.

The two signals are simply averaged to form the prediction signal. We ask the question what kind of pairs are necessary to achieve the best predic­ tion performance of superimposed motion compensation. If a pair consists of two identical hypotheses, the superimposed prediction signal is identical to either one of the hypotheses and we expect no improvement over motioncompensated prediction with just one hypothesis. But, in general, there will be pairs of hypotheses that outperform motion-compensated prediction with single hypotheses.

41) is widely used to obtain the displacement vector and con­ trol the coding mode in practical systems. 42), and are the power spectral densities of the predic­ tion error e and the current frame s, respectively. 42) takes the spatial correlation of the prediction error e and the original signal s into account. It represents the maximum bit-rate reduction (in bits/sample) possible by optimum encoding of the prediction error e, compared to optimum intra-frame encoding of the signal s, for Gaussian wide-sense sta­ tionary signals for the same mean square reconstruction error [141].

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