Imaging control apparatus and image control method
An imaging control apparatus of the present disclosure includes a controller that performs a readout operation on a plurality of pixels in an imaging device, and performs control on a basis of a moving object detection result to cause a time length of the readout operation on a first pixel to differ from a time length of the readout operation on a second pixel, the first pixel corresponding to a detection region where a moving object has been detected, and the second pixel corresponding to a region other than the detection region.
1. An imaging control apparatus, comprising:
an imaging device that includes a plurality of first pixels, wherein the plurality of pixels includes a plurality of detection pixels;
a moving object velocity detector configured to detect a velocity of a moving object based on pixel values of the plurality of detection pixels; and
a controller configured to:
execute a readout operation on each of the plurality of first pixels, wherein
the readout operation on one of a first pixel of the plurality of pixels or a second pixel of the plurality of pixels is executed based on a conversion of a pixel signal supplied from the one of the first pixel or the second pixel into a pixel period, and
the pixel period has a length corresponding to a signal level of the pixel signal;
execute an analog to digital (AD) conversion operation based on the length of the pixel period and
control, based on the detected velocity of the moving object, a first time length of the readout operation on Rare first pixel to differ from a second time length of the readout operation on the second pixel, wherein
the first pixel corresponds to a first region of detection of the moving object, and
the second pixel corresponds to a second region different from the first region.
2. The imaging control apparatus according to claim 1 , wherein the controller is further configured to:
execute an imaging operation on the plurality of pixels; and
control a first time length of the imaging operation on the first pixel to differ from a second time length of the imaging operation on the second pixel.
3. The imaging control apparatus according to claim 1 , wherein the controller includes:
a reference signal generator configured to generate a reference signal, wherein a signal level of the reference signal sequentially changes; and
a comparison unit configured to compare the pixel signal with the reference signal to generate a comparison signal,
wherein the controller is further configured to detect the length of the pixel period based on the comparison signal.
4. The imaging control apparatus according to claim 3 , wherein the controller is further configured to:
control a degree of change in the signal level of the reference signal; and
control at least one of the first time length or the second time length of the readout operation based on the degree of change.
5. The imaging control apparatus according to claim 1 , wherein the controller is further configured to:
control at least one of the first time length or the second time length of the readout operation; and
control a frame rate based on the at least one of the first time length or the second time length of the readout operation.
6. The imaging control apparatus according to claim 1 , wherein the controller is further configured to:
control at least one of the first time length or the second time length of the readout operation; and
control a resolution of the AD conversion operation on the pixel signal based on the at least one of the first time length or the second time length of the readout operation.
7. The imaging control apparatus according to claim 1 , further comprising an image recognizer configured to recognize a subject,
wherein the controller is further configured to control at least one of the first time length or the second time length of the readout operation based on a recognition result in the image recognizer.
8. The imaging control apparatus according to claim 1 , wherein
the readout operation is executed on a plurality of outer-side-arranged pixels of the plurality of first pixels in the imaging device, and
a third time length of the readout operation on the plurality of outer-side-arranged pixels is controlled based on the detected velocity of the moving object.
9. The imaging control apparatus according to claim 1 , wherein the controller is further configured to control the first time length of the readout operation on the first pixel such that the first time length of the readout operation is shorter than the second time length of the readout operation on the second pixel.
10. The imaging control apparatus according to claim 1 , wherein the controller is further configured to control the first time length of the readout operation on the first pixel such that the first time length of the readout operation is longer than the second time length of the readout operation on the second pixel.
11. The imaging control apparatus according to claim 2 , wherein the controller is further configured to control the first time length of the imaging operation on the first pixel such that the first time length of the imaging operation is shorter than the second time length of the imaging operation on the second pixel.
12. An imaging control method, comprising:
detecting, by a moving object velocity detector, a velocity of a moving object based on pixel values of a plurality of detection pixels in an imaging device;
executing by a controller, a readout operation on each of a plurality of pixels in the imaging device, wherein
the plurality of pixels includes the plurality of detection pixels,
the readout operation on one of a first pixel of the plurality of pixels or a second pixel of the plurality of pixels is executed based on a conversion of a pixel signal supplied from the one of the first pixel or the second pixel into a pixel period, and
the pixel period has a length corresponding to a signal level of the pixel signal;
executing, by the controller, an analog to digital (AD) conversion operation based on the length of the pixel period and
controlling, based on the detected velocity of the moving object, a first time length of the readout operation on the first pixel to differ from a second time length of the readout operation on the second pixel, wherein
the first pixel corresponds to a first region of detection of the moving object, and
the second pixel corresponds to a second region different from the first region.
13. A non-transitory computer-readable medium having stored thereon computer-executable instructions that, when executed by a computer, cause the computer to execute operations, the operations comprising:
detecting a velocity of a moving object based on pixel values of a plurality of detection pixels in an imaging device;
executing a readout operation on each of a plurality of pixels in the imaging device, wherein
the plurality of pixels includes the plurality of detection pixels,
the readout operation on one of a first pixel of the plurality of pixels or a second pixel of the plurality of pixels is executed based on a conversion of a pixel signal supplied from the one of the first pixel or the second pixel into a pixel period, and
the pixel period has a length corresponding to a signal level of the pixel signal;
executing an analog to digital (AD) conversion operation based on the length of the pixel period; and
controlling, based on the detected velocity of the moving object, a first time length of the readout operation on the first pixel to differ from a second time length of the readout operation on the second pixel, wherein
the first pixel corresponds to a first region of detection of the moving object, and
the second pixel corresponds to a second region different from the first region.