Imaging apparatus, imaging method, and imaging program

An imaging method comprising:

• measuring, by a processor, four distances to an object based on a first image captured by an imaging unit by causing four first light emitting units to emit light so as to illuminate a front of the object, the four first light emitting units being respectively provided at four corners of a square on a planar view;
• determining, by the processor, based on the four distances respectively measured with respect to the four first light emitting units whether the object is horizontal to the imaging unit or not;
• when four spotlights from the four first light emitting units do not appear in the first image, determining, by the processor, whether the object is close to the imaging unit or the object is not placed over the imaging unit, on the basis of a bright region in a second image of the object that is captured by causing a second light emitting unit so as to illuminate the front of the object;
• and
• in response to failing to measure the four distances to the object based on the first image due to an actual distance from the imaging unit to the object,
• when determining that the object is not horizontal to the imaging unit, making, by the processor, a notification requesting a change of a tilt of the object with respect to the imaging unit,
• when determining that the object is close to the imaging unit, making a notification requesting a movement of a position of the object away from the imaging unit, and
• when determining that the object is not placed over the imaging unit, making a notification requesting a movement of the position of the object closer to the imaging unit.

A non-transitory computer-readable storage medium storing a computer program, the computer program causing a computer to perform a procedure comprising:

• measuring four distances to an object based on a first image captured by an imaging unit by causing four first light emitting units to emit light so as to illuminate a side front of the object, the four first light emitting units being respectively provided at four corners of a square on a planar view;
• determining based on the four distances respectively measured with respect to the four first light emitting units whether the object is horizontal to the imaging unit or not;
• when four spotlights from the four first light emitting units do not appear in the first image, determining whether the object is close to the imaging unit or net the object is not placed over the imaging unit on the basis of a bright region in a second image of the object that is captured by causing a second light emitting unit so as to illuminate the side of the object:
• and
• in response to failing to measure the four distances to the object based on the first image due to an actual distance from the imaging unit to the object, when determining that the object is not horizontal to the imaging unit, making a notification requesting a change of a tilt of the object with respect to the imaging unit;
• when determining that the object is close to the imaging unit, making a notification requesting a movement of a position of the object from the imaging unit, and
• when determining that the object is not placed over the imaging unit, making a notification requesting a movement of the position of the object closer to the imaging unit.