Image processing method to superimpose item image onto model image and image processing device thereof

1. An image processing device comprising:

at least one non-transitory memory that stores computer program code; and

a processor operable to access said memory and execute said computer program code, said computer program code comprising:

item image acquisition code configured to cause said processor to acquire an item image displaying an item being an accessory worn dangling down;

model image acquisition code configured to cause said processor to acquire a model image where a part on which the item is to be worn is shown;

correction code configured to

cause said processor to correct a tilt of a correction target region being at least a part of an item region being a region where an item is shown in the item image so that a direction of a center of gravity position of the correction target region with respect to a support position of the correction target region is along a direction of gravity in the model image, and

adjust a size of the item region so that a ratio of a size of a part on which the item is to be worn in the model image and the size of the item region is substantially equal to a ratio of an actual size of the part on which the item is to be worn and an actual size of the item based on the size of the part on which the item is to be worn in the model image acquired from the model image, information about the actual size of the part on which the item is to be worn that is set in advance, the size of the item region in the item image acquired from the item image, and information about the actual size of the item that is stored in advance; and

output code configured to cause said processor to output the model image and the item region so that the item region is displayed superimposed on the model image.

2. The image processing device according to claim 1 , wherein

the correction target region is a whole of the item region, and

the support position is a position where an attachment portion of the item is shown in the item region.

3. The image processing device according to claim 1 , wherein

the item includes a first part and a second part joined to each other through a joint portion such that the first part and the second part are able to swing with respect to each other,

the correction target region comprises the first part and the second part, and

the support position is a joint end in the correction target region on a side of the first part.

4. The image processing device according to claim 3 , wherein the correction code is further configured to cause said processor to specify a first region of the item region in which a length of the first region where an item is shown along a predetermined direction in the item image is shorter than adjacent regions of the item region adjacent to the first region in a predetermined range by at least a predetermined amount of difference as the joint portion and specify the adjacent regions as the first part and the second part.

5. The image processing device according to claim 1 , wherein said computer program code further comprises specifying code configured to cause said processor to specify the direction of gravity in the model image based on information that can be acquired from the model image, and

the correction code is further configured to cause said processor to correct the tilt of the correction target region based on the direction of gravity specified according to the specifying code.

6. The image processing device according to claim 1 , wherein the correction code is further configured to cause said processor to, when an item image whose vertical direction is specified is acquired according to the item image acquisition code, specify an uppermost portion in the item region as the attachment portion.

7. The image processing device according to claim 1 , wherein the output code is further configured to cause said processor to specify the part on which the item is to be worn in the model image by searching for the model image using a template indicating characteristics of the part on which the item is to be worn, and superimpose the item region on the model image so that a position where the attachment portion of the item is shown comes at the part on which the item is to be worn in the model image.

8. An image processing method executed by a computer, the method comprising:

an item image acquisition step of acquiring an item image displaying an item being an accessory worn dangling down;

a model image acquisition step of acquiring a model image where a part on which the item is to be worn is shown;

a correction step of correcting a tilt of a correction target region being at least a part of an item region being a region where an item is shown in the item image so that a direction of a center of gravity position of the correction target region with respect to a support position of the correction target region is along a direction of gravity in the model image, and of adjusting a size of the item region so that a ratio of a size of a part on which the item is to be worn in the model image and the size of the item region is substantially equal to a ratio of an actual size of the part on which the item is to be worn and an actual size of the item based on the size of the part on which the item is to be worn in the model image acquired from the model image, information about the actual size of the part on which the item is to be worn that is set in advance, the size of the item region in the item image acquired from the item image, and information about the actual size of the item that is stored in advance; and

an output step of outputting the model image and the item region so that the item region is displayed superimposed on the model image.

9. An image processing device comprising:

at least one non-transitory memory that stores computer program code; and

a processor operable to access said memory and to execute said computer program code, said computer program code comprising:

item image acquisition code configured to cause said processor to acquire an item image displaying an item being an accessory worn dangling down;

model image acquisition code configured to cause said processor to acquire a model image where a part on which the item is to be worn is shown;

correction code configured to cause said processor to correct a tilt of a correction target region being at least a part of an item region being a region where an item is shown in the item image so that a direction of a center of gravity position of the correction target region with respect to a support position of the correction target region is along a direction of gravity in the model image; and

output code configured to cause said processor to output the model image and the item region so that the item region is displayed superimposed on the model image,

wherein the item comprises a first part and a second part joined to each other through a joint portion such that the first part and the second part are able to swing with respect to each other,

wherein the correction target region comprises the first part and the second part,

wherein the support position is a joint end in the correction target region on a side of the first part, and

wherein the correction code is further configured to cause said processor to specify a first region of the item region in which a length of the first region where an item is shown along a predetermined direction in the item image is shorter than adjacent regions of the item region adjacent to the first region in a predetermined range by at least a predetermined amount of difference as the joint portion and specify the adjacent regions as the first part and the second part.