Image processing apparatus, image capturing apparatus, and storage medium storing image processing program

An image processing apparatus, comprising:

• an acquisition unit acquiring information on focused states of a first image being captured and a second image being captured;
• a comparison unit comparing the focused states in respective corresponding areas of the first image and the second image;
• and
• a motion detection unit detecting a motion of a subject based on a comparison result of the focused states acquired by the comparison unit.

A non-transitory storage medium storing an image processing program causing a computer to execute:

• inputting a first image and a second image which are captured in time-series;
• acquiring feature amounts of focused states of the first image and the second image;
• dividing each of the first image and the second image into a plurality of image areas and determining a frequency distribution of a feature amount for each of the image areas;
• and
• calculating a difference between the frequency distribution of the first image and the frequency distribution of the second image for each of the image areas and detecting a motion of a subject based on a frequency distribution of the difference for each of the image areas.

A non-transitory storage medium storing an image processing program causing a computer to execute:

• acquiring information on focused states of a first image being captured and a second image being captured;
• comparing the focused states in respective corresponding areas of the first image and the second image;
• and
• detecting a motion of a subject based on a comparison result of the focused states acquired by the comparing.