IMAGE PICKUP APPARATUS THAT CARRIES OUT NOISE COMPENSATION, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM
First Claim
1. An image pickup apparatus having an image pickup device that obtains an image signal, comprising:
- an exposure control unit configured to output first and second image signals corresponding to the first and second exposures differing from each other;
a compensation processing unit configured to perform a noise compensation process on the first and second image signals; and
a synthesizing unit configured to synthesize the first and second image signals subjected to the noise compensation process to obtain a composite image signal,wherein said compensation processing unit inherits data obtained in the first and second image signals when the noise compensation process was carried out on the first and second image signal, and carries out a noise compensation process on next first and second signals based on the data.
1 Assignment
0 Petitions
Accused Products
Abstract
An image pickup apparatus which is capable of accurately compensating for noise even when images are continuously taken at varying exposures. First and second image signals corresponding to the first and second exposures are output. The first and second image signals are subjected to a noise compensation process and then synthesized together to obtain a composite image signal. Data obtained in the first and second image signals when the noise compensation process was carried out on the first and second image signal is inherited, and a noise compensation process on the next first and second signals is carried out based on the data.
-
Citations
9 Claims
-
1. An image pickup apparatus having an image pickup device that obtains an image signal, comprising:
-
an exposure control unit configured to output first and second image signals corresponding to the first and second exposures differing from each other; a compensation processing unit configured to perform a noise compensation process on the first and second image signals; and a synthesizing unit configured to synthesize the first and second image signals subjected to the noise compensation process to obtain a composite image signal, wherein said compensation processing unit inherits data obtained in the first and second image signals when the noise compensation process was carried out on the first and second image signal, and carries out a noise compensation process on next first and second signals based on the data. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A control method for an image pickup apparatus having an image pickup device that obtains an image signal, comprising:
-
an exposure control step of outputting first and second image signals corresponding to the first and second exposures differing from each other; a compensation processing step of performing a noise compensation process on the first and second image signals; and a synthesizing step of synthesizing the first and second image signals subjected to the noise compensation process to obtain a composite image signal, wherein in said compensation processing step, data obtained in the first and second image signals when the noise compensation process was carried out on the first and second image signal is inherited, and a noise compensation process on next first and second signals is carried out based on the data.
-
-
9. A non-transitory computer-readable storage medium storing a control program for implementing a control method of controlling an image pickup apparatus having an image pickup device that obtains an image signal corresponding to an optical image obtained by shooting a subject, the control method comprising:
-
an exposure control step of outputting first and second image signals corresponding to the first and second exposures differing from each other; a compensation processing step of performing a noise compensation process on the first and second image signals; and a synthesizing step of synthesizing the first and second image signals subjected to the noise compensation process to obtain a composite image signal, wherein in the compensation processing step, data obtained in the first and second image signals when the noise compensation process was carried out on the first and second image signal is inherited, and a noise compensation process on next first and second signals is carried out based on the data.
-
Specification