Information processing apparatus, information processing method, program, and imaging system
An event detection unit 20 detects, as an event, that a luminance change of a pixel in an imaging unit that photoelectrically converts an optical image indicating a subject exceeds a preset threshold value. A determination unit 41 a of an information processing unit 40 - 1 determines whether no event is detected on the basis of event detection information indicating a detection result of the event generated by the event detection unit 20 . In a case where no event is detected by the determination unit 41 a , a movement control unit 42 a moves a position of the optical image indicating the subject in an imaging unit 22 of the event detection unit 20 so that an event can be detected in an event non-detection region. An event information generation unit 43 generates event information including the event detection information and movement information regarding movement of the position of the optical image. Therefore, it is possible to acquire event information indicating an event detection result for a wider region than before.
1 . An information processing apparatus comprising:
circuitry configured to
determine whether an event is detected based on event detection information indicating whether it is detected, as the event, that a luminance change of a pixel in an imager that photoelectrically converts an optical image indicating a subject exceeds a preset threshold value, and
move a position of the optical image indicating the subject in the imager in a case where it is determined that no event is detected,
wherein the circuitry determines that no event is detected in a case where capacity shortage in a communication path occurs in transmission of the event detection information.
2 . The information processing apparatus according to claim 1 ,
wherein the circuitry determines that no event is detected in a case where there is an event non-detection region in which the number of events indicated by the event detection information is smaller than a preset threshold value.
3 . The information processing apparatus according to claim 2 ,
wherein the circuitry divides a region of the optical image and determines whether each divided region is the event non-detection region.
4 . The information processing apparatus according to claim 1 ,
wherein the circuitry determines a direction of an edge in the optical image based on the event detection information, and determines that no event is detected in a case where there is a direction in which the edge is not detected.
5 . The information processing apparatus according to claim 1 ,
wherein the circuitry determines a motion of the event, and determines that no event is detected in a case where there is a direction in which there is no motion.
6 . The information processing apparatus according to claim 1 ,
wherein in a case where the capacity shortage occurs, the circuitry moves the imager in a direction in which detected events decrease.
7 . The information processing apparatus according to claim 1 ,
wherein the circuitry includes the imager and an imaging optical system configured to form the optical image indicating the subject on an imaging surface of the imager, and
wherein the circuitry moves the position of the optical image indicating the subject by moving a position of an optical axis of the imaging optical system in the imager.
8 . The information processing apparatus according to claim 7 ,
wherein the circuitry is further configured to generate event information including the event detection information and movement information regarding movement of the position of the optical image indicating the subject.
9 . The information processing apparatus according to claim 8 ,
wherein the circuitry moves the imager in a direction orthogonal to the optical axis of the imaging optical system.
10 . The information processing apparatus according to claim 9 ,
wherein the circuitry uses information indicating movement of the imager as the movement information.
11 . The information processing apparatus according to claim 8 ,
wherein the circuitry moves the optical axis of the imaging optical system with respect to the imager.
12 . The information processing apparatus according to claim 11 ,
wherein the circuitry uses information indicating movement of the optical axis as the movement information.
13 . The information processing apparatus according to claim 8 ,
wherein the circuitry includes, in the event information, motion information generated by a motion sensor that detects a motion of a mobile body including the imager.
14 . An information processing method comprising:
determining whether an event is detected based on event detection information indicating whether it is detected, as the event, that a luminance change of a pixel in an imager that photoelectrically converts an optical image indicating a subject exceeds a preset threshold value; and
performing control to move a position of the optical image indicating the subject in the imager in a case where the circuitry determines that no event is detected,
wherein it is determined that no event is detected in a case where capacity shortage in a communication path occurs in transmission of the event detection information.
15 . A non-transitory computer-readable storage medium having embodied thereon a program, which when executed by a computer causes the computer to execute a control method, the method comprising:
determining whether an event is detected based on event detection information indicating whether it is detected, as the event, that a luminance change of a pixel in an imager that photoelectrically converts an optical image indicating a subject exceeds a preset threshold value; and
moving a position of the optical image indicating the subject in the imager in a case where it is determined that no event is detected,
wherein it is determined that no event is detected in a case where capacity shortage in a communication path occurs in transmission of the event detection information.
16 . An imaging system comprising:
circuitry configured to
determine whether an event is detected based on event detection information indicating whether it is detected, as the event, that a luminance change of a pixel in an imager that photoelectrically converts an optical image indicating a subject exceeds a preset threshold value,
move a position of the optical image indicating the subject in the imager in a case where it is determined that no event is detected,
generate event information including the event detection information and movement information regarding movement of the position of the optical image indicating the subject, and
generate an image indicating the subject based on the generated event information,
wherein the circuitry determines that no event is detected in a case where capacity shortage in a communication path occurs in transmission of the event detection information.
17 . The information processing apparatus according to claim 1 ,
wherein the event is detected according to capacity in the communication path used for the transmission of the event detection information.