Information processing device, information processing method, and recording medium

An information processing method comprising:

• for an input image as a target to be processed, calculating a variation amount between a value of a predetermined pixel of the input image and values of peripheral pixels of the predetermined pixel;
• based on an attribute that is a property of pixels within a specified area in the input image and the variation amount, calculating attribute reliability that is reliability of the attribute of the pixel of the input image;
• based on image quality information that is information about image quality for the attribute and the attribute reliability, estimating a regularization strength of the pixel in the input image:
• generating a reconstructed image that is an image acquired by reconstructing the input image by using the regularization strength;
• and
• for each pixel, estimating the regularization strength such that the higher the attribute reliability is, the more the pixel conforms to the image quality information for the attribute, and estimates the regularization strength such that the lower the attribute reliability is, the more the pixel is apart from the image quality information for the attribute.

A non-transitory computer-readable recording medium embodying a program, the program causing a computer to perform a method, the method comprising:

• for an input image as a target to be processed, calculating a variation amount between a value of a predetermined pixel of the input image and values of peripheral pixels of the predetermined pixel;
• based on an attribute that is a property of pixels within a specified area in the input image and the variation amount, calculating attribute reliability that is reliability of the attribute of the pixel of the input image;
• based on image quality information that is information about image quality for the attribute and the attribute reliability, estimating a regularization strength of the pixel in the input image;
• generating a reconstructed image that is an image acquired by reconstructing the input image by using the regularization strength;
• and
• for each pixel, estimating the regularization strength such that the higher the attribute reliability is, the more the pixel conforms to the image quality information for the attribute, and estimates the regularization strength such that the lower the attribute reliability is, the more the pixel is apart from the image quality information for the attribute.