Title :
Comments on "On asymmetrical performance of discrete cosine transform"
Author :
Zhongde Wang ; Jullien, G.A. ; Miller, W.C.
Author_Institution :
Dept. of Electr. Eng., Windsor Univ., Ont., Canada
Abstract :
The authors first show that the gain of transform coding over PCM, the criterion for performance evaluation of a transform used in the above paper, is equivalent to the maximal-reducible-bit criterion defined by one author. Then they present a much simpler method to judge the symmetric or asymmetric performance of any discrete transform.<>
Keywords :
covariance matrices; discrete cosine transforms; transform coding; asymmetrical performance; discrete cosine transform; discrete transform; maximal-reducible-bit criterion; performance evaluation; symmetric performance; transform coding; Covariance matrix; Discrete cosine transforms; Discrete transforms; Distortion measurement; Performance gain; Phase change materials; Rate-distortion; Symmetric matrices; Transform coding; Virtual reality;
Journal_Title :
Signal Processing, IEEE Transactions on
