| 摘要 |
An imaging apparatus for the present invention comprises an image sensor which repeatedly reads out image data, an OB calculating unit which calculates a representative value of OB output levels read from the image sensor; and a memory which stores the representative value of OB pixel output levels calculated by the OB calculating unit in a manner of dividing into a part for subtraction (a integer part) and a part for carrying-over (a decimal part); and an image synthesizing unit which sequentially adds the image data read from an effective pixel region in the image sensor and generates an added image, wherein the above-described image synthesizing unit subtracts the part for subtraction of the representative value of OB pixel output levels stored in the memory (OB subtraction part) from either the generated added image, or the image read from the effective pixel region, and, when a next OB value for addition after second addition is calculated, the OB calculating unit adds the carrying-over (decimal) part to the representative value of OB output levels stored in the memory for the representative value of OB output levels calculated using the image data read from the OB pixel regions. |
