FILM DIGITIZATION ALIASING ARTIFACTS CAUSED BY GRID LINE PATTERNS

被引:24
作者
WANG, J [1 ]
HUANG, HK [1 ]
机构
[1] UCSF, SCH MED, DEPT RADIOL, SAN FRANCISCO, CA 94143 USA
关键词
7;
D O I
10.1109/42.293930
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
Sampling a radiographic film containing grid line patterns during digitization may produce aliasing artifacts (Moire pattern). We propose a mathematical model based on the laser spot size of the digitizer, the sampling distance and the angle between the grid line and the sampling direction to predict the amplitudes and the frequencies of aliasing artifacts. The predicted results are compared to the experimental results. Effective ways of avoiding or reducing aliasing artifacts without sacrificing too much image quality are proposed.
引用
收藏
页码:375 / 385
页数:11
相关论文
共 7 条
[1]   VISUAL PROCESSING OF SIMPLE 2-DIMENSIONAL SINE-WAVE LUMINANCE GRATINGS [J].
CARLSON, CR ;
COHEN, RW ;
GOROG, I .
VISION RESEARCH, 1977, 17 (03) :351-358
[2]  
CURRY TS, 1990, PHYSICS DIAGNOSTICS
[3]  
HUANG HK, 1987, ELEMENTS DIGITAL RAD
[4]  
HUANG HK, 1987, ELEMENTS DIGITAL RAD, P318
[5]   PERFORMANCE-CHARACTERISTICS OF A LASER SCANNER AND LASER PRINTER SYSTEM FOR RADIOLOGICAL IMAGING [J].
LO, SCB ;
TAIRA, RK ;
MANKOVICH, NJ ;
HUANG, HK ;
TAKEUCHI, H .
COMPUTERIZED RADIOLOGY, 1986, 10 (05) :227-237
[6]  
MILLER ER, 1969, RADIOLOGY, V192, P13
[7]  
Rosenfeld A., 1976, DIGITAL PICTURE PROC