SPATIALLY VARIANT SMOOTHING FILTER FOR IMAGE ENHANCEMENT.

Hiroshi Kondo, Hiroyasu Sakamoto

Research output: Contribution to journalArticle

Abstract

A new spatially variant smoothing filter is derived for image enhancement. The main object of this filter is to improve the output image of a linear spatially invariant image restoration filter such as Wiener filter. In this filter the processing for flat fields of image gray levels is quite different from that of edge portions of the image. As a new trial, we apply one-dimensional smoothing to the edge portions. This is because it would be important that the edge line of an image be linked smoothly for visual perception. For flat fields we divide these into three categories, 'full flat field', 'ordinary flat field', and 'less flat field'. In each field the unknown parameter of the new smoothing filter is determined optimally.

Original languageEnglish
Pages (from-to)757-762
Number of pages6
JournalTransactions of the Institute of Electronics and Communication Engineers of Japan. Section E
VolumeE68
Issue number11
Publication statusPublished - Nov 1985
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

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