Title:
ELECTRONIC IMAGE PICKUP DEVICE
Document Type and Number:
Japanese Patent JP3540567
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a device which suppresses the deterioration of an image, gets a image signal that reproduces and shows a satisfactory image and also realizes miniaturization by controlling a resolution compensating means in accordance with a signal level from an image pickup device.
SOLUTION: A CPU 20 controls an edge emphasis degree integrator 15 in accordance with an input level of an image signal from a CCD 2 and variably controls a coefficient, that is, contour (edge) emphasis degree in performing edge emphasis processing. Specifically, it controls so that an edge emphasis degree to a input that has a lower level becomes relatively low. Then, optimum edge emphasis processing is performed even at a low signal level without emphasizing noise too much. Moreover, gamma correction processing is performed and subtracting color is performed to 8-bit image data of each color on a preceding stage of a digital processing part and besides, various signal processing are executed. Thereby, it is possible to make a circuit scale small and to contribute to the miniaturization of this device itself.
Inventors:
Jun Sakurai
Application Number:
JP26883497A
Publication Date:
July 07, 2004
Filing Date:
October 01, 1997
Export Citation:
Assignee:
Olympus Endo Technology America Inc.
International Classes:
H04N5/202; H04N5/208; H04N5/243; H04N9/07; H04N9/68; H04N9/69; (IPC1-7): H04N9/07; H04N5/202; H04N5/208; H04N5/243; H04N9/68; H04N9/69
Domestic Patent References:
| JP63171090A | ||||
| JP3214973A | ||||
| JP2141067A | ||||
| JP8009199A | ||||
| JP11112837A |
Attorney, Agent or Firm:
Susumu Ito