Method for differentiating dynamic range of image

Details Method for differentiating dynamic range of image Method for differentiating dynamic range of image

2007-08-06

2009-11-24

Tran, Phuoc (Department: 2624)

Image analysis

Image transformation or preprocessing

Measuring image properties

C382S170000

Reexamination Certificate

active

07623735

ABSTRACT:
A method for differentiating dynamic range of image is disclosed. The method comprises the following steps. First of all, pixel numbers with the same level value of Density units Dn-1and Dnare compared. Next the minimum pixel number of each level value of Density units Dn-1and Dnare counted. Then the minimum pixel numbers of each level value of Density units Dn-1and Dnare summed. Next the ratio of total minimum pixel number and total pixel number R and a specification value Rsare compared. Then whether R is smaller than Rsor not is determined so as to recognize whether Density units Dn-1and Dncould be differentiated or not.

REFERENCES:
patent: 6061091 (2000-05-01), Van de Poel et al.
patent: 7050628 (2006-05-01), Wang
patent: 7269283 (2007-09-01), Wang

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