| CPC G06V 10/774 (2022.01) [G06V 10/776 (2022.01)] | 9 Claims |

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1. A training device comprising:
a data acquirer that acquires training data including a first image of a first type and a second image of a second type that is different from the first type;
a first trainer that repeats an epoch for causing the first image and the second image to be learned under a same condition multiple times; and
a second trainer that repeats an epoch for training a trained learning model generated by the first trainer with a rate of error back-propagation in regard to the first image and a rate of error back-propagation in regard to the second image being made different from each other.
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