Information processing system and information processing method
The present technology relates to an information processing system and an information processing method capable of preventing a black belt from occurring in a case of imaging a display section. A control unit of a vertical blanking period control unit controls a vertical blanking period of a video displayed on a video wall on the basis of the exposure time of a video camera that captures the video wall. The present technology can be applied to, for example, a re-imaging system used in virtual production in which a video displayed on an LED display is re-imaged as a background, and a PC, a video wall controller, a video wall, a video camera, and the like constituting the re-imaging system.
1 . An information processing system comprising
circuitry configured to, on a basis of a relation between a vertical blanking period of a video displayed on a display section and an exposure time of an imaging unit that images the display section, control the vertical blanking period of the video displayed on the display section,
wherein the circuitry is further configured to delete the vertical blanking period of a first frame that is one of two adjacent frames of the video on a basis of the exposure time.
2 . The information processing system according to claim 1 ,
wherein the circuitry is further configured to delete the vertical blanking period of the first frame by advancing a display start time of a second frame that is a next frame of the first frame.
3 . The information processing system according to claim 2 ,
wherein the circuitry is further configured to extend the vertical blanking period of the second frame by the vertical blanking period of the first frame.
4 . The information processing system according to claim 2 ,
wherein the circuitry is further configured so that the vertical blanking period of the second frame is included in an exposure period of all rows of the imaging unit by changing display start times of all frames of the video on a basis of the exposure time.
5 . The information processing system according to claim 4 ,
wherein the circuitry is further configured so that the vertical blanking period of the second frame is included in the exposure period of all rows of the imaging unit on a basis of a curtain speed of the imaging unit and the exposure time.
6 . The information processing system according to claim 5 ,
wherein the circuitry is further configured to set a current mode to a first mode in which the vertical blanking period of the second frame is not included in the exposure period of all rows of the imaging unit or a second mode in which the vertical blanking period of the second frame is included in the exposure period of all rows of the imaging unit on a basis of a curtain speed of the imaging unit and the exposure time.
7 . The information processing system according to claim 6 ,
wherein in a case where the current mode is set to the second mode, the circuitry is further configured so that the vertical blanking period of the second frame is included in the exposure period of all rows of the imaging unit.
8 . The information processing system according to claim 1 , further comprising:
an acquisition unit that acquires the exposure time.
9 . The information processing system according to claim 1 , further comprising:
an input unit that acquires a video signal for displaying on the display section including a plurality of display units;
a division unit that divides the video signal into video signals for displaying on respective display units of the display section; and
an output unit that outputs a control signal for controlling the vertical blanking period and the divided video signal to the display unit,
wherein the circuitry is further configured to control the vertical blanking period by generating the control signal.
10 . The information processing system according to claim 9 ,
wherein the circuitry is provided on a first device,
the input unit, the division unit, and the output unit are provided on a second device different from the first device, and
the circuitry outputs the control signal to the second device.
11 . The information processing system according to claim 9 ,
wherein the circuitry, the input unit, the division unit, and the output unit are provided on a same device.
12 . The information processing system according to claim 1 , further comprising:
the display section configured to be driven according to control of the vertical blanking period by the circuitry.
13 . The information processing system according to claim 1 ,
wherein the display section emits light in a passive matrix driving system, and
the imaging unit performs imaging by a rolling shutter system.
14 . An information processing system comprising
circuitry configured to, on a basis of a relation between a vertical blanking period of a video displayed on a display section and an exposure time of an imaging unit that images the display section, control the vertical blanking period of the video displayed on the display section,
wherein the circuitry is further configured to control the vertical blanking period so that the exposure time is an integral multiple of a light emission cycle of the display section, and
wherein in a case where the vertical blanking period is not included in an exposure period of the imaging unit, the circuitry is further configured to control the vertical blanking period so that the exposure time is an integral multiple of a light emission cycle of the display section.
15 . The information processing system according to claim 14 ,
wherein in a case where the vertical blanking period is not included in the exposure period, the circuitry is further configured to determine a refresh rate of the display section so that the exposure time is an integral multiple of a light emission cycle of the display section, and control the vertical blanking period on a basis of the refresh rate.
16 . An information processing system comprising
circuitry configured to, on a basis of a relation between a vertical blanking period of a video displayed on a display section and an exposure time of an imaging unit that images the display section, control the vertical blanking period of the video displayed on the display section,
wherein the circuitry is further configured to control the vertical blanking period so that the exposure time is an integral multiple of a light emission cycle of the display section, and
wherein in a case where the vertical blanking period is included in the exposure period of the imaging unit, the circuitry is further configured to control the vertical blanking period so that the exposure time is a sum of an integral multiple of a light emission cycle of the display section and the vertical blanking period.
17 . The information processing system according to claim 16 ,
wherein in a case where the vertical blanking period is included in the exposure period, the circuitry is further configured to determine a refresh rate so that the exposure time is a sum of an integral multiple of a light emission cycle of the display section and the vertical blanking period, and control the vertical blanking period on a basis of the refresh rate.