Suppressing the Cliff Effect in Video Reproduction Quality
Bell Labs Technical Journal
| Hi-index | 754.84 |
The quantization ofn-dimensional vectors inR^{n}with an arbitrary probability measure, under a mean-square error constraint, is discussed. It is demonstrated that a uniform, one-dimensional quantizer followed by a noiseless digital variable-rate encoder ("entropy encoding") can yield a rate that is, for anyn, no more than0.754bit-per-sample higher than the rate associated with the optimaln-dimensionai quantizer, regardless of the probabilistic characterization of the inputn-vector for the allowable mean-square error.