Information processing apparatus, method and computer program product

An information processing method comprising:

• acquiring, by processing circuitry, an input image captured by an image-capturing device installed in a specific location;
• performing, by the processing circuitry, adaptation processing of adapting an estimation model, which is used for detecting positions or the number of objects contained in an image, to the specific location by sequentially selecting a parameter of the estimation model from a lower level toward a higher level, and by modifying the selected parameter in such a manner to reduce an estimation error in the positions or the number of the objects contained in the input image;
• acquiring, by the processing circuitry, a termination condition of the adaptation processing;
• and
• terminating, by the processing circuitry, the adaptation processing when the termination condition is satisfied.

A computer program product comprising a non-transitory computer-readable medium containing a program executed by a computer, the program causing the computer to execute:

• acquiring an input image captured by an image-capturing device installed in a specific location;
• performing adaptation processing of adapting an estimation model, which is used for detecting positions or the number of objects contained in an image, to the specific location by sequentially selecting a parameter of the estimation model from a lower level toward a higher level, and by modifying the selected parameter in such a manner to reduce an estimation error in the positions or the number of the objects contained in the input image;
• acquiring a termination condition of the adaptation processing;
• and
• terminating the adaptation processing when the termination condition is satisfied.