Information processing apparatus and information processing method for detecting position of object

An information processing method comprising:

• (a) acquiring an input image including an object;
• (b) extracting a region that has been changed from a background image in the acquired input image, as a changing region, a binary image in which each pixel value is one or zero and the pixel value of the pixel in the change region is different from the pixel value of the pixel in the region other than the change region;
• (c) generating a change region image in which a pixel value of each pixel represents whether or not a corresponding pixel in the input image belongs to the changing region;
• (d) extracting a plurality of feature images from the acquired input image as an output of a neural network by inputting a combination of the input image and the extracted change region image to the neural network;
• and
• (e) detecting a position of the object from the plurality of extracted feature images.

A non-transitory computer-readable storage medium that stores a program for causing a computer to perform:

• acquiring an input image including an object;
• extracting a region that has been changed from a background image in the acquired input image, as a changing region, a binary image in which each pixel value is one or zero and the pixel value of the pixel in the change region is different from the pixel value of the pixel in the region other than the change region;
• generating a change region image in which a pixel value of each pixel represents whether or not a corresponding pixel in the input image belongs to the changing region;
• extracting a plurality of feature images from the acquired input image as an output of a neural network by inputting a combination of the input image and the extracted change region image to the neural network;
• and
• detecting a position of the object from the plurality of extracted feature images.