Video signal processor and method of processing video signal

1. A video signal processor comprising:

a video signal input section configured to receive video signals at two or more different points of view;

a difference value calculation section configured to calculate a difference value between the video signals at the two or more points of view, which have been obtained at each predetermined timing;

a compensation value calculation section configured to hold a plurality of difference values, which have been obtained by the difference value calculation section, at predetermined time intervals, and calculate a compensation value using the difference values to reduce compensation variations along a time axis among the plurality of difference values;

a video signal compensation section configured to compensate a difference between the video signals using the compensation value, which has been obtained by the compensation value calculation section, and to output the video signals whose difference has been compensated;

a control signal generation section configured to generate a control signal using the compensation value which has been obtained by the compensation value calculation section and to output the control signal; and

an information input section configured to receive information at imaging, wherein the compensation value calculation section holds the difference value, which has been obtained by the difference value calculation section, and the information at the imaging, which has been obtained by the information input section at each predetermined timing, at each predetermined time interval, and calculates the compensation value with reduced compensation variations along the time axis based on the information at the imaging using the held difference value.

2. The video signal processor of claim 1 , further comprising an information input section configured to receive information at imaging, wherein the compensation value calculation section holds the difference value, which has been obtained by the difference value calculation section, and the information at the imaging, which has been obtained by the information input section at each predetermined timing, at each predetermined time interval, and calculates the compensation value with reduced compensation variations along the time axis based on the information at the imaging using the held difference value.

3. The video signal processor of claim 1 , wherein the video signals, which are input to the video signal input section, are video signals at points of right- and left-eye view.

4. The video signal processor of claim 1 , wherein the information at the imaging to be input to the information input section is at least one piece of information on zoom, iris, or focus.

5. The video signal processor of claim 1 , wherein the compensation value calculation section calculates the compensation value corresponding to an amount of change in the information at the imaging, which has been input to the information input section, to compensate the difference value held at each predetermined time interval.

6. A video signal processor comprising:

a video signal input section configured to receive video signals at two or more different points of view;

a difference value calculation section configured to calculate a difference value between the video signals at the two or more points of view, which have been obtained at each predetermined timing;

a compensation value calculation section configured to hold the difference value which has been obtained by the difference value calculation section at each predetermined time interval, and to calculate a compensation value with reduced compensation variations along a time axis using the held difference value; and

a control signal generation section configured to generate a control signal using the compensation value which has been obtained by the compensation value calculation section and to output the control signal.

7. The video signal processor of claim 6 , further comprising:

an information input section configured to receive information at imaging, wherein the compensation value calculation section holds the difference value, which has been obtained by the difference value calculation section, and the information at the imaging, which has been obtained by the information input section at each predetermined timing, at each predetermined time interval, and calculates the compensation value with reduced compensation variations along the time axis based on the information at the imaging using the held difference value.

8. A video signal processor comprising:

a video signal input section configured to receive video signals at two or more different points of view;

a difference value calculation section configured to calculate a difference value between the video signals at the two or more points of view, which have been obtained at each predetermined timing;

a compensation value calculation section configured to hold a plurality of difference values, which have been obtained by the difference value calculation section, at predetermined time intervals, and calculate a compensation value using the difference values to reduce compensation variations along a time axis among the plurality of difference values; and

a video signal compensation section configured to compensate a difference between the video signals using the compensation value, which has been obtained by the compensation value calculation section, and to output the video signals whose difference has been compensated,

wherein the difference value calculation section calculates a difference in an angle of view.

9. A video signal processor comprising:

a video signal input section configured to receive video signals at two or more different points of view;

a difference value calculation section configured to calculate a difference value between the video signals at the two or more points of view, which have been obtained at each predetermined timing;

a compensation value calculation section configured to hold a plurality of difference values, which have been obtained by the difference value calculation section, predetermined time intervals, and calculate a compensation value using the difference values to reduce compensation variations along a time axis among the plurality of difference values; and

a video signal compensation section configured to compensate a difference between the video signals using the compensation value, which has been obtained by the compensation value calculation section, and to output the video signals whose difference has been compensated; and

a control signal generation section configured to generate a control signal using the compensation value which has been obtained by the compensation value calculation section and to output the control signal,

wherein the control signal output from the control signal generation section is a control signal influencing at least one of zoom or iris.

10. A method of processing video signals, the method comprising:

inputting the video signals at two or more different points of view;

calculating a difference value between the video signals at the two or more points of view, which have been obtained at each predetermined timing;

calculating a compensation value with reduced compensation variations along a time axis using the difference value, which has been obtained in the calculating the difference value and held at each predetermined time interval; and

compensating a difference between the video signals using the compensation value, which has been obtained in the calculating the compensation value, and outputting the video signals whose difference has been compensated.

11. The method of claim 10 , further comprising generating a control signal using the compensation value which has been obtained in the calculating the compensation value, and outputting the control signal.

12. The method of claim 11 , further comprising inputting information at imaging, wherein in the calculating the compensation value, the difference value, which has been obtained in the calculating the difference value, and the information at the imaging, which has been obtained in the inputting the information at each predetermined timing, are held at predetermined time intervals, and the compensation value with reduced compensation variations along the time axis is calculated based on the information at the imaging using the held difference value.

13. The method of claim 10 , further comprising inputting information at imaging, wherein in the calculating the compensation value, the difference value, which has been obtained in the calculating the difference value, and the information at the imaging, which has been obtained in the inputting the information at each predetermined timing, are held at predetermined time intervals, and the compensation value with reduced compensation variations along the time axis is calculated based on the information at the imaging using the held difference value.

14. A method of processing video signals, the method comprising:

inputting the video signals at two or more different points of view;

calculating a difference value between the video signals at the two or more points of view, which have been obtained at each predetermined timing;

calculating a compensation value with reduced compensation variations along a time axis using the difference value, which has been obtained in the calculating the difference value and held at each predetermined time interval; and

generating a control signal using the compensation value which has been obtained in the calculating the compensation value, and outputting the control signal.

15. The method of claim 14 , comprising inputting information at imaging, wherein in the calculating the compensation value, the difference value, which has been obtained in the calculating the difference value, and the information at the imaging, which has been obtained in the inputting the information at each predetermined timing, are held at predetermined time intervals, and the compensation value with reduced compensation variations along the time axis is calculated based on the information at the imaging using the held difference value.

16. A video signal processor comprising:

a video signal input section configured to receive video signals at two or more different points of view, wherein the video signals at the two or more different points of view comprise a sequence of frames;

a difference value calculation section configured to calculate with the sequence of frames a difference value between the corresponding two or more points of view of each frame, which have been obtained at each predetermined timing;

a compensation value calculation section configured:

to hold the difference value between the two or more points of view of each frame at each predetermined time interval, such that the compensation value calculation section holds multiple difference values, and

to calculate an average of the held difference values as a compensation value with reduced compensation variations along a time axis; and

a video signal compensation section configured to compensate a difference between the video signals using the compensation value, which has been obtained by the compensation value calculation section, and to output the video signals whose difference has been compensated.