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- Eugene A. Sandler, Dmitri A. Gusev, Gregory Y. Milman
- Computers & Graphics
- 1997

Error diiusion, ordered dither, and patterning are well-known digital halftoning techniques , each with its advantages and disadvantages. Error diiusion is known for correlated artifacts looking like zebra stripes. Images produced by ordered dither and patterning suuer from artiicial contours in slowly varying regions of pictures. Use of ordered matrices by… (More)

- Eugene A. Sandler, Dmitri A. Gusev, Gregory Y. Milman, Mikhail L. Podolsky
- Signal Processing
- 1997

Oversampling a delta-sigma-modulated sequence, one can compute unbiased sample estimates of averages of consecutive input elements for a wide variety of inputs. We prove that these estimates are most eecient in their class (that is, variances of sample means are minimum in the class of random binary sequences g n , n = 1; : : : ; N, such that the expected… (More)

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