Method for determining the quality of print using pixel intensity level frequency distributions
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 1, 1992
Grant Date -
N/A
app pub date -
Jun 14, 1990
filing date -
Jun 14, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A print inspection method in which an area of printed material is optically scanned to obtain image data representing picture elements having variable intensity levels includes counting the number of picture elments at a particular intensity level in the area scanned to thereby generate a frequency distribution of the intensity level of the image data in the area scanned. The frequency distribution generated is compared to a stored reference frequency distribution of intensity levels of the image data. A statistical comparison with the reference data is utilized to determine whether or not the printed material is satisfactory.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully