| 摘要 |
An image processing method for obtaining digital data comprising the steps of obtaining a plurality of image signals under a condition of different accumulation periods as an initial value for a counting operation, comparing, by using digital data for a first image signal of the plurality of image signals, an electric signal corresponding to a second image signal of the plurality of image signals with a reference signal, obtaining digital data for the second image signal, performing a counting operation in a mode having the same sign as the sign of digital data for the first image signal between a down-counting mode and an up-counting mode while the comparing step is being performed, and storing a count value.
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