Image registration for printing

1. A method for printing on an article, comprising:

selecting a shape model from a storage or a network with a computing device, wherein the shape model is generated from a first image of a first article, wherein the shape model includes a fiducial, a reference location, and a graphic marker, wherein the fiducial is located in the first image of the first article, wherein the reference location is based on a location of the fiducial in the first image of the first article, and wherein the graphic marker is positioned at a pre-selected location relative to the reference location;

locating the fiducial in a second image of a second article, by the computing device, wherein the second article is different than the first article;

establishing the reference location in the second image of the second article;

positioning the graphic marker within the second image of the second article at the pre-selected location; and

printing a graphic on the second article at a graphic location, wherein the graphic location on the article corresponds to the pre-selected location of the graphic marker on the second image of the second article.

2. The method of claim 1 , wherein prior to printing the graphic on the second article, the method further comprises displaying the second image of the second article with the graphic marker at the pre-selected location.

3. The method of claim 1 , wherein positioning the graphic marker comprises rotating the graphic marker relative to the second image of the second article.

4. The method of claim 1 , wherein the pre-selected location includes a first directional coordinate, a second directional coordinate, and a rotational orientation.

5. The method of claim 1 , wherein prior to printing the graphic on the second article, the method further comprises determining a size of the second article based on the second image of the second article.

6. The method of claim 5 , further comprising scaling the graphic marker based on the size of the second article.

7. The method of claim 1 , wherein the fiducial comprises a logo disposed on the first article.

8. The method of claim 7 , wherein after locating the fiducial in the second image and prior to printing the graphic on the second article, the method further comprises scaling the graphic marker based on a size of the logo.

9. The method of claim 1 , wherein the fiducial comprises a pattern disposed on a last for supporting the second article.

10. The method of claim 1 , wherein the fiducial comprises a surface pattern of the second article.

11. The method of claim 1 , wherein the first article and the second article are articles of footwear.

12. The method of claim 1 , wherein the first article and the second article are articles of apparel.

13. One or more computer-readable storage media storing computer-readable instructions that when executed by a computer, cause the computer to perform the method of claim 1 .

14. A method for printing on an article, comprising:

locating a fiducial in an image of an article, by a computing device, based on a shape model, wherein the shape model is generated from one or more images of another article;

establishing a reference location in the image of the article based on the location of the fiducial;

positioning a graphic marker within the image of the article relative to the reference location; and

printing a graphic on the article based on the reference location of the positioned graphic marker.

15. The method of claim 14 , wherein locating the fiducial, establishing a reference location, and positioning the graphic marker are performed using a shape model of the another article.

16. The method of claim 14 , wherein the fiducial comprises a logo disposed on the article, and wherein after locating the fiducial and prior to printing the graphic on the article, the method further comprises scaling the graphic marker based on a size of the logo.

17. The method of claim 14 , wherein the fiducial is coupled to a print bed of a printing device.

18. One or more computer-readable storage media storing computer-readable instructions that when executed by a computer, cause the computer to perform the method of claim 14 .

19. A method for printing on an article, comprising:

selecting a shape model from a storage or a network with a computing device, wherein the shape model is based on one or more first images of one or more first articles, wherein the shape model includes a fiducial, a reference location, and a graphic marker, wherein the fiducial is located in the one or more first images, wherein the reference location is based on a location of the fiducial in the one or more first images, and wherein the graphic marker is positioned at a pre-selected location relative to the reference location;

locating the fiducial in a second image of a second article, by the computing device, wherein the second image of the second article is different than the one or more first images of the one or more first articles;

determining a size of the second article based on the second image of the second article;

scaling the graphic marker based on the size of the second article;

establishing the reference location in the second image of the second article;

positioning the scaled graphic marker within the second image of the second article at the pre-selected location; and

printing a graphic on the second article at a graphic location, wherein the graphic location on the article corresponds to the pre-selected location of the scaled graphic marker on the second image of the second article.