| 摘要 |
A signal conversion apparatus which converts an input signal x from an image sensor into an output signal y by a function relation represented by Expression 1: y = f ( x ) =∫b x [ 1 / r ( xi ) ] ⅆ xi ( 1 ) where b is a predetermined constant, xi is an integration variable corresponding to a value of the input signal x, and r(xi) is a quantization step function before removal of a noise of the input signal x, which determines an increment of the input signal x to an increment of the output signal y.
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