Portal de Periódicos da CAPES

On the Elimination of Unwanted Moiré Patterns in Two-dimensional Images Generated by a Defective Optical Scanning Process

1986; Taylor & Francis; Volume: 33; Issue: 7 Linguagem: Inglês

10.1080/713822034

0030-3909

D.H. Davies, G. Harburn, R. P. Williams,

Optical Polarization and Ellipsometry

Abstract Arrays of motifs, such as are found in half-tone images, may exhibit moiré fringes when they are generated by a defective scanning system. These moiré effects are analysed by Fourier methods, which suggest that alterations to the form of the motif can eliminate the fringes. Three such techniques are described and demonstrated.