Title

Non-Transform Methods Of Picture Compression Applied To Medical Images

Abstract

A variant of differential pulse-code modulation (DPCM), bounded differential and shift encoding, is tested on a set of medical images. The 512 × 512 8-bit/pixel images were digitized from film plates. The pixel and pixel-difference distributions of the digital images were analyzed along with the entropy of these images. One version of the bounded differential and shift-encoding method was tested along with several variants using additional quantization. The tests included measurements of the amount of data compression and the error introduced by quantization. The results demonstrate compression in the range of 3-5 bits/pixel and mean-square error in the range 0.003% to 0.6%. Comparison with several noncausal methods shows that the coding method tested offers less compression, but less error combined with simpler implementation.

Publication Date

11-1-1988

Publication Title

Proceedings - Annual Symposium on Computer Applications in Medical Care

Number of Pages

483-487

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

0024112583 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0024112583

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