| 摘要 |
An imaging apparatus includes an image sensor, an AD conversion unit, a clamp processing unit, and a video signal correction unit. The clamp processing unit is configured to clamp to a black level, an image signal of an effective pixel region or an optical-black region of the image sensor after having been digitally converted by the AD conversion unit, by evaluating a difference from a signal of the optical-black region. The video signal correction unit is configured to calculate signal information of a part or whole of the optical-black region of an image signal of the image sensor; and, independently for each color of the video signal, to calculate correction amount of a video signal using the signal information, and to carry out correction by subtracting calculated correction amount from the image signal before clamping operation performed by the clamp processing unit. |
