Method, apparatus, and computer program for completing painting of image, and method, apparatus, and computer program for training artificial neural network

A non-transitory computer-readable recording medium storing a computer program that, when executed by a computer, causes the computer to perform a method comprising:

• generating, by using an artificial neural network, a first intermediate image in which at least one uncolored region in a primary image is colored;
• generating, by using the artificial neural network, a first color query regarding the at least one color-unknown region in the primary image;
• and
• generating a secondary image based on at least one of the first color query, a first answer to the first color query, and the first intermediate image,
• wherein the artificial neural network is a neural network that further learned a corresponding relationship between an input image in which a first region is not colored, a third color query regarding a colored second region of the input image, a third answer to the third color query, an output image in which the first region is colored, and a fourth color query regarding the output image, and
• wherein the second region is a region colored according to the third color query of the input image and the third answer.

An apparatus for completing coloring of an image based on a query regarding a color-unknown region in the image and an answer to the query, the apparatus comprising a processor configured to:

• generate, by using an artificial neural network, a first intermediate image in which at least one uncolored region in a primary image is colored;
• generate, by using the artificial neural network, a first color query regarding the at least one color-unknown region in the primary image;
• and
• generate a secondary image based on at least one of the first color query, a first answer to the first color query, and the first intermediate image,
• wherein the artificial neural network is a neural network that further learned a corresponding relationship between an input image in which a first region is not colored, a third color query regarding a colored second region of the input image, a third answer to the third color query, an output image in which the first region is colored, and a fourth color query regarding the output image, and
• wherein the second region is a region colored according to the third color query of the input image and the third answer.