1. An apparatus to display a stereo image, comprising:
a feature-point extractor to extract feature points of graphics objects included in a left image and a right image, included in a stereo image;
a representative-vector determiner to determine a representative vector among vectors between a predetermined point and the feature points for the left image and the right image, respectively; and
an error-correction unit to correct at least one of a vertical error and a rotation error between the left image and the right image using a difference between the representative vector determined in the left image and the representative vector determined in the right image.
2. The apparatus of claim 1, wherein the feature points comprise feature points of the graphics objects included in predetermined areas of the left image and the right image.
3. The apparatus of claim 2, further comprising an area-generator for generating the predetermined areas.
4. The apparatus of claim 1, wherein respective representative vectors comprise a vector that is nearly vertical or horizontal, among the vectors between a center of a polygon, which is generated based on the feature points.
5. The apparatus of claim 1, wherein at least one representative vector is determined.
6. The apparatus of claim 1, wherein the error-correction unit sets one of the left image and the right image as a reference image and vertically shifts the corresponding right image or the left image, which is not the reference image, with respect to the reference image, thereby correcting the vertical error.
7. The apparatus of claim 1, wherein the error-correction unit sets one of the left image and the right image as a reference image, and rotates the corresponding right image or the left image, which is not the reference image, with respect to the reference image, thereby correcting the rotation error.
8. The apparatus of claim 1, wherein, the error-correction unit corrects the vertical error or the rotation error when the difference between the representative vectors meets a predetermined threshold value.
9. The apparatus of claim 1, further comprising a display unit to display the left image and the right image for which at least one of the vertical error and the rotation error has been corrected.
10. The apparatus of claim 1, further comprising a stereo-optical unit to optically divide the displayed left image and right image.
11. The apparatus of claim 10, wherein the stereo-optical unit optically divides the displayed left image and right image using at least one of a parallax barrier operation, a lenticular operation, a polarization operation and a time-division operation.
12. A method of displaying a stereo image, comprising:
extracting feature points of graphics objects included in a left image and a right image, included in a stereo image;
determining a representative vector among vectors between a predetermined point and the feature points for the left image and the right image, respectively; and
correcting at least one of a vertical error and a rotation error between the left image and the right image using a difference between the representative vector determined in the left image and the representative vector determined in the right image.
13. The method of claim 12, wherein the feature points comprise feature points of the graphics objects included in predetermined areas of the left image and the right image.
14. The method of claim 13, further comprising generating the predetermined areas.
15. The method of claim 12, wherein respective representative vectors comprise a vector, which is nearly vertical or horizontal, among the vectors between a center of a polygon, which is generated based on the feature points.
16. The method of claim 12, wherein at least one representative vector is determined.
17. The method of claim 12, wherein the correcting of the at least one of the vertical error and the rotation error involves one of the left image and the right image being set as a reference image, and the corresponding right image or the left image, which is not the reference image, being vertically shifted with respect to the reference image, so that the vertical error is corrected.
18. The method of claim 12, wherein the correcting of the at least one of the vertical error and the rotation error involves one of the left image and the right image being set as a reference image, and the corresponding right image or the left image, which is not the reference image, being rotated with respect to the reference image, so that the rotation error is corrected.
19. The method of claim 12, wherein, the correcting of the at least one of the vertical error and the rotation error involves the vertical error or the rotation error being corrected when the difference between the representative vectors meets a predetermined threshold value.
20. The method of claim 12, further comprising optically dividing the displayed left image and right image.
21. The method of claim 20, wherein the optically dividing involves the displayed left image and right image being optically divided using at least one of a parallax barrier method, a lenticular method, a polarization method and a time-division method.
22. The method of claim 12, further comprising displaying the left image and the right image, for which at least one of the vertical error and the rotation error has been corrected.
23. At least one medium comprising computer readable code to control at least one processing element to implement the method of claim 12.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of creating orders for goods or services, comprising:
a business providing code for generating an order for goods or services from a plurality of order choices in a memory tag being a transponder device with a memory for storing digital content;
a user uploading the code from the memory tag to a handheld computing device, the code including at least executable code for generating an order on the handheld computing device in the form of digital data thereon;
providing the user with an order template on the handheld computing device, the order template for the user to place an order on the handheld computing device even when the user is out of range of the memory tag and initiate the order as soon as a connection is established;
the user sending the order generated using the uploaded code on the handheld computing device from the handheld computing device to the business; and
updating a pro forma order on the memory tag.