JP2007295300A5 - - Google Patents

Claims (10)

  A first mode in which a plurality of photoelectric conversion elements are disposed on the imaging surface, and an image signal is read from a first photoelectric conversion element group disposed in a first region of the imaging surface, and the first of the imaging surface An image pickup unit that can be driven in a second mode for reading out an image signal from a second photoelectric conversion element group disposed in a second region included in the first region smaller than the first region;
  A white balance correction value is calculated based on an image signal obtained by driving the imaging unit in the first mode, and the imaging unit is driven in the second mode using the white balance correction value. A control unit that controls to perform white balance processing of the image signal obtained by
  An imaging apparatus comprising:   When the control unit reads an image signal in m (m is an integer equal to or greater than 2) frames every predetermined second, the control unit performs the operation in n (n is an integer greater than or equal to 1 less than m) of the m frames. Driving the image pickup unit in the first mode to read an image signal, and controlling to drive the image pickup unit in the second mode to read the image signal in the mn frames out of the m frames. The imaging apparatus according to claim 1, wherein the imaging apparatus is characterized.   The imaging apparatus according to claim 2, wherein the control unit drives the imaging unit in the first mode every predetermined frame.   The imaging unit includes an adding unit that adds image signals read from the photoelectric conversion elements, and the control unit is configured so that the frame rate is the same in the first mode and the second mode. The imaging apparatus according to claim 2, wherein the number of the image signals to be added by an adding unit is set.   4. The control unit according to claim 2, wherein when the imaging unit is driven in the first mode, the control unit performs control so that image signals are thinned out and read from the first photoelectric conversion element group. 5. The imaging device described in 1.   The imaging apparatus according to claim 5, wherein the control unit sets the thinning rate of the thinning readout so that a frame rate is the same between the first mode and the second mode.   The control unit cuts out an image having the same angle of view as an image obtained in the second mode from an image obtained by driving the imaging unit in the first mode, and resizes the cut-out image. The imaging device according to any one of claims 2 to 6.   The imaging apparatus according to claim 7, further comprising a correction unit that corrects a difference in resolution between the resized image and an image obtained by driving the imaging unit in the second mode.   An imaging system comprising: an optical system; and the imaging apparatus according to any one of claims 1 to 8.   A first mode in which a plurality of photoelectric conversion elements are disposed on the imaging surface, and an image signal is read from a first photoelectric conversion element group disposed in a first region of the imaging surface; and the first mode of the imaging surface Control method for an imaging apparatus including an imaging unit that can be driven in a second mode that reads an image signal from a second photoelectric conversion element group that is arranged in a second area that is smaller than the area and included in the first area Because
  A white balance correction value is calculated based on an image signal obtained by driving the imaging unit in the first mode, and the imaging unit is driven in the second mode using the white balance correction value. A control method for an imaging apparatus, characterized in that control is performed so as to perform white balance processing of an image signal obtained in this way.