Data processing apparatus, data processing method, and program

A data processing method comprising:

• performing, by a processor,
• a step of generating an inverted image obtained by inverting pixel values of a single-channel image that constitutes a first labeled training dataset, as training data of a second labeled training dataset obtained by augmentation of the first labeled training dataset, the single-channel image being an image of which the pixel values are determined in accordance with a physical quantity sensed by light-receiving elements during imaging or an image of which the pixel values are determined by reversible transform on the physical quantity;
• and
• a step of generating an inverted label corresponding to the inverted image, as a ground truth label that constitutes the second labeled training dataset, the inverted label being generated based on a ground truth label of the single-channel image, the ground truth label of the single-channel image constituting the first labeled training dataset.