| 摘要 |
An endoscope apparatus includes: a region dividing portion that divides an image; a brightness mean calculation portion that has a peripheral brightness mean calculation portion that calculates a peripheral brightness mean value, and a center brightness mean calculation portion that calculates a center brightness mean; a first weighting factor calculation portion that calculates a first weighting factor alpha; a first photometric value calculation portion that calculates a first photometric value based on a sum total of a value obtained by multiplying a center brightness mean by the first weighting factor alpha and a value obtained by multiplying the peripheral brightness mean by (1-alpha); and a brightness adjustment control portion that generates a brightness adjustment control signal for adjusting the brightness of the image based on the first photometric value.
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