Image processing apparatus, image processing method, and storage medium

An image processing apparatus comprising:

• a controller including a memory storing instructions and a processor executing the instructions, the controller being configured to function as:
• an acquisition unit configured to acquire a plurality of images including a first image and a second image which is different from the first image;
• a detection unit configured to detect a quadrilateral region from the first image included in the plurality of images acquired by the acquisition unit;
• a determination unit configured to determine a position of each edge that constitutes the quadrilateral region detected by the detection unit;
• and
• a correction unit configured to correct the first image and the second image based on information about the quadrilateral region having an edge of which position has been determined by the determination unit.

An image processing method for controlling an image processing apparatus that comprises a controller including a memory storing instructions and a processor executing the instructions to execute the method, the image processing method comprising:

• acquiring a plurality of images;
• detecting a quadrilateral region from a first image which is one of the acquired plurality of images;
• determining a position of each edge that constitutes the detected quadrilateral region;
• and
• detecting a quadrilateral region included in each of the plurality of images which is different from the first image acquired using information about the position of each edge determined.

An image processing method for controlling an image processing apparatus that comprises a controller including a memory storing instructions and a processor executing the instructions to execute the method, the image processing method comprising:

• acquiring a plurality of images including a first image and a second image which is different from the first image;
• detecting a quadrilateral region from the first image included in the acquired plurality of images;
• determining a position of each edge that constitutes the detected quadrilateral region;
• and
• correcting the first image and the second image based on information about the quadrilateral region having an edge of which position has been determined.

A non-transitory computer-readable storage medium storing computer executable instructions that cause a computer to execute a control method, the control method comprising:

• acquiring a plurality of images;
• detecting a quadrilateral region from a first image which is one of the acquired plurality of images;
• determining a position of each edge that constitutes the detected quadrilateral region;
• and
• detecting a quadrilateral region included in each of the plurality of images which is different form the first image acquired using information about the position of each edge determined.