Title :
On-line control of the colour printing quality by image processing
Author :
Yu Xiaohan ; Sodergard, C. ; Yla-Jaaski, J.
Author_Institution :
Graphic Arts Lab., Tech. Res. Centre of Finland, Espoo, Finland
Abstract :
A prototype called ARGUS is under development for automatic colour quality inspection of the printing web. The inspection is performed by a movable( 2D) colour CCD-camera which takes images under stroboscopic Light. To guide the measurements, the digital "page design files" are analysed by image processing techniques and used to determine several measurement spots and templates under a set of criteria. These measurements include co-ordinate system reference, colour registration, colour density, grey balance, micro-homogeneity and ink consumption pattern, which are all needed for printing press control.<>
Keywords :
automatic optical inspection; automatic test equipment; computer controlled typesetting; printing; quality control; real-time systems; ARGUS; automatic colour quality inspection; co-ordinate system reference; colour CCD-camera; colour density; colour printing quality; colour registration; digital page design files; grey balance; image processing; ink consumption pattern; micro-homogeneity; on-line control; printing press control; printing web; Automatic control; Color; Control systems; Density measurement; Image analysis; Image processing; Ink; Inspection; Printing machinery; Prototypes;
Conference_Titel :
TENCON '93. Proceedings. Computer, Communication, Control and Power Engineering.1993 IEEE Region 10 Conference on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-1233-3
DOI :
10.1109/TENCON.1993.320192
