Patent ID: 8823825

Claim:
An image processing device comprising: a high dynamic range synthesizing circuit that synthesizes a first image signal in accordance with an amount of incident light on each first pixel during a first charge accumulation period and a second image signal in accordance with an amount of incident light on each second pixel during a second charge accumulation period shorter than the first charge accumulation period, wherein the high dynamic range synthesizing circuit includes a signal level adjusting unit that adjusts a signal level of the second image signal in accordance with a ratio between the first and second charge accumulation periods, an interpolation processing unit to which the first image signal and the second image signal of which the signal level is adjusted by the signal level adjusting unit are input and that generates interpolated signals, and an expansion processing unit that performs an expansion process between the interpolated signals by a signal level exceeding an output saturation level at which saturation of an output charge for the amount of incident light during the first charge accumulation period occurs, wherein the interpolation processing unit generates the interpolated signal through an interpolation process on the first pixel, which is set as a target pixel, using the second image signal from each second pixel which is a peripheral pixel located in periphery of the first pixel which is the target pixel, and generates the interpolated signal through an interpolation process on the second pixel, which is set as a target pixel, using the first image signal from each first pixel which is a peripheral pixel located in periphery of the second pixel which is the target pixel.