Signal processing device, imaging device, signal processing meihod and program

1. A signal processing device comprising:

a controller configured to

acquire distance measurement information on a basis of an addition value obtained by adding together outputs of a plurality of phase difference detection pixels supplied from an imaging element in which the plurality of phase difference detection pixels is arranged,

the plurality of phase difference detection pixels respectively having different phase difference characteristics,

add together the outputs of the phase difference detection pixels arranged in a first line and outputs of the phase difference detection pixels arranged in a second line adjacent to the first line depending on whether or not an imaging condition satisfies a predetermined condition,

set, as the first line, the line in which the phase difference detection pixels having the phase difference characteristics corresponding to an exit pupil distance of a lens are arranged, and acquire the exit pupil distance of the lens by communication.

2. The signal processing device according to claim 1 , wherein

the imaging condition is luminance, and

the controller adds together the outputs of the phase difference detection pixels different in the phase difference characteristic in a case where the luminance is smaller than a threshold value.

3. The signal processing device according to claim 1 , wherein the second line includes one or two lines.

4. The signal processing device according to claim 1 , wherein the controller,

in a case where the imaging condition satisfies the predetermined condition, at least adds together the outputs of the phase difference detection pixels arranged in the first line and the outputs of the phase difference detection pixels arranged in the second line adjacent to the first line, and

in a case where the imaging condition does not satisfy the predetermined condition, uses the outputs of the phase difference detection pixels arranged in the first line, to acquire the distance measurement information.

5. The signal processing device according to claim 1 , wherein

opening positions of the phase difference detection pixels are made different depending on the difference in the corresponding exit pupil distances.

6. The signal processing device according to claim 1 , wherein predetermined number of lines as a cycle is formed in the imaging element.

7. The signal processing device according to claim 1 , wherein

the controller divides the addition value by a number of different phase difference characteristics.

8. An imaging device comprising:

an imaging optical system;

an imaging element in which a plurality of phase difference detection pixels is arranged,

the plurality of phase difference detection pixels respectively having different phase difference characteristics and irradiated with light captured by the imaging optical system; and

a controller configured to

acquire distance measurement information on a basis of an addition value obtained by adding together outputs of the plurality of phase difference detection pixels supplied from the imaging element,

add together the outputs of the phase difference detection pixels arranged in a first line and outputs of the phase difference detection pixels arranged in a second line adjacent to the first line depending on whether or not an imaging condition satisfies a predetermined condition,

set, as the first line, the line in which the phase difference detection pixels having the phase difference characteristics corresponding to an exit pupil distance of a lens are arranged, and

acquire the exit pupil distance of the lens by communication.

9. A signal processing method comprising:

acquiring, by a controller, distance measurement information on a basis of an addition value obtained by adding together outputs of a plurality of phase difference detection pixels supplied from an imaging element in which the plurality of phase difference detection pixels is arranged, the plurality of phase difference detection pixels respectively having different phase difference characteristic,

adding together the outputs of the phase difference detection pixels arranged in a first line and outputs of the phase difference detection pixels arranged in a second line adjacent to the first line depending on whether or not an imaging condition satisfies a predetermined condition,

setting, as the first line, the line in which the phase difference detection pixels having the phase difference characteristics corresponding to an exit pupil distance of a lens are arranged, and

acquiring the exit pupil distance of the lens by communication.

10. A non-transitory computer readable medium storing program code for signal processing, the program code being executable by an electronic processor to perform operations comprising:

acquiring, by a controller, distance measurement information on a basis of an addition value obtained by adding together outputs of a plurality of phase difference detection pixels supplied from an imaging element in which the plurality of phase difference detection pixels is arranged, the plurality of phase difference detection pixels respectively having different phase difference characteristic,

adding together the outputs of the phase difference detection pixels arranged in a first line and outputs of the phase difference detection pixels arranged in a second line adjacent to the first line depending on whether or not an imaging condition satisfies a predetermined condition,

setting, as the first line, the line in which the phase difference detection pixels having the phase difference characteristics corresponding to an exit pupil distance of a lens are arranged, and

acquiring the exit pupil distance of the lens by communication.

11. The imaging device according to claim 8 , wherein

the imaging condition is luminance, and

the controller adds together the outputs of the phase difference detection pixels different in the phase difference characteristic in a case where the luminance is smaller than a threshold value.

12. The imaging device according to claim 8 , wherein

the second line includes one or two lines.

13. The imaging device according to claim 8 , wherein

the controller,

in a case where the imaging condition satisfies the predetermined condition, at least adds together the outputs of the phase difference detection pixels arranged in the first line and the outputs of the phase difference detection pixels arranged in the second line adjacent to the first line, and

in a case where the imaging condition does not satisfy the predetermined condition, uses the outputs of the phase difference detection pixels arranged in the first line, to acquire the distance measurement information.

14. The imaging device according to claim 8 , wherein

opening positions of the phase difference detection pixels are made different depending on the difference in the corresponding exit pupil distances.

15. The imaging device according to claim 8 , wherein

a predetermined number of lines as a cycle is formed in the imaging element.

16. The imaging device according to claim 8 , wherein

the controller divides the addition value by a number of different phase difference characteristics.

17. The non-transitory computer readable medium according to claim 10 , wherein

the imaging condition is luminance, and

the controller adds together the outputs of the phase difference detection pixels different in the phase difference characteristic in a case where the luminance is smaller than a threshold value.

18. The non-transitory computer readable medium according to claim 10 , wherein

the controller,

in a case where the imaging condition satisfies the predetermined condition, at least adds together the outputs of the phase difference detection pixels arranged in the first line and the outputs of the phase difference detection pixels arranged in the second line adjacent to the first line, and

in a case where the imaging condition does not satisfy the predetermined condition, uses the outputs of the phase difference detection pixels arranged in the first line, to acquire the distance measurement information.

19. The non-transitory computer readable medium according to claim 10 , wherein

opening positions of the phase difference detection pixels are made different depending on the difference in the corresponding exit pupil distances.

20. The non-transitory computer readable medium according to claim 10 , wherein

the controller divides the addition value by a number of different phase difference characteristics.