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US 5,400,667 AGranted
Means for measuring picture quality
AssigneeTeleverket
InventorsYingduo Feng, Olov stberg
Life of this patent
Estimating the term…
Abstract
The invention relates to a way for subjective, graphical measurement of picture sharpness/picture quality. Measuring and assessing picture quality have so far been a time-consuming chore for laboratory engineers having access to expensive and complicated electro-optical measuring equipments. The way described enables an unknown text object to be measured with respect to objective and subjective picture quality using for example a series of previously measured paper pictures in a simple and reliable way.
Claims3
A device for measuring picture quality of display media, comprising:
- a set of test gauges containing pictures/text with varying and physically well-defined picture qualities for direct reading of physical measurement results as well as the corresponding subjective expression of the picture or the text with respect to picture quality
- wherein said test gauges are produced in a series with a subjective picture quality ranging from very poor to very good.
Dependencies are inferred from the claim text.