Title:
SHADING CORRECTION METHOD FOR IMAGE INPUT DEVICE AND IMAGE INPUT DEVICE
Document Type and Number:
Japanese Patent JP3865943
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an image input device for selecting shading correction data by a stop value, a zoom position and the kind of a lens and performing shading correction corresponding to an image pickup scene.
SOLUTION: Based on control signals outputted from an optical lens 101 capable of outputting the control signals of the stop value, the zoom position and the kind of the lens, the shading correction data are selected and the shading correction corresponding to the position of a screen is performed by the multiplication operation of digital signals. Also, the shading correction data are computed in a CPU, new shading correction can be performed as well, and by providing the shading correction data for the respective chrominance signals of a CCD, the shading correction of reduced pseudo colors can be executed as well.
Inventors:
Takahiro Iwasawa
Application Number:
JP20735398A
Publication Date:
January 10, 2007
Filing Date:
July 23, 1998
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H04N5/235; H04N9/07; G06T1/00; (IPC1-7): H04N5/235; G06T1/00; H04N9/07
Domestic Patent References:
| JP11055682A | ||||
| JP4345386A | ||||
| JP5030415A | ||||
| JP9069971A | ||||
| JP8294133A | ||||
| JP11187413A |
Attorney, Agent or Firm:
Akio Miyai