Title:
逆光画像の判定
Document Type and Number:
Japanese Patent JP4036156
Kind Code:
B2
Abstract:
A CPU 200 analyzes inner region pixels IP and outer region pixels OP independently; compares an inner luminance distribution characteristic i.e. a luminance distribution characteristic regarding the inner region pixels IP with a reference inner luminance distribution characteristic regarding image data of a backlit image that is previously stored in a HDD 202; and thereby calculates an inner similarity Si. Similarity, the CPU 200 compares an outer luminance distribution characteristic i.e. a luminance distribution characteristic regarding the outer region pixels OP with a reference outer luminance distribution characteristic, and thereby calculates an outer similarity So. The CPU 200 then calculates a total similarity St by multiplying the calculated inner similarity Si by the outer similarity So. If the total similarity St is greater than a criterion similarity Stref, the CPU 200 judges the shot image to be a backlit image.
Inventors:
Toshie Imai
Application Number:
JP2003203431A
Publication Date:
January 23, 2008
Filing Date:
July 30, 2003
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G06T1/00; G06T5/40; G03B27/32; G06K9/00; G06T7/00; G06T7/40; H04N1/407; H04N5/225; H04N101/00
Domestic Patent References:
| JP2002185771A |
Attorney, Agent or Firm:
Meisei International Patent Office