ESSILOR INTERNATIONAL (COMPAGNIE GÉNÉRALE DOPTIQUE);ESSILOR INTERNATIONAL (COMPAGNIE GÉNÉRALE D'OPTIQUE)
发明人:
DROBE, BJÖRN,GIRAUDET, GUILLAUME
申请号：
EP10745338.3
公开号：
EP2448465B1
申请日:
2010.06.25
申请国别(地区):
EP
年份:
2014
代理人:
摘要：
The invention relates to a method for characterizing a perception of blur by a subject (10) in order to determine a dioptric blur value for an image (C) observed by the subject. The image has a blur generated by the low-pass filtering of the image components in accordance with the respective space frequencies of said image components. An indication of the perception thereof of blur in the image is provided by the subject and is associated with the dioptric blur value. Several images associated with different dioptric blur values are used for defining a dioptric blur threshold value for the subject that corresponds to a blur perception criterion. The invention can be used for adjusting the design of a progressive lens for the subject in accordance with the sensitivity to said visual blur of said object.
