| 摘要 |
Deriving data for calibration or improving the positioning of a computer-controlled machine comprising a movable carrier for changing the position of a first machine part relative that of second machine part. The carrier is moved to a plurality of carrier positions such that the position of the first machine part relative to that of the second machine part changes for each of said plurality of positions. At each carrier position, a pattern generator attached to the first machine part is illuminated with at least one illuminator such that at least one three-dimensional pattern of light is created in space. Position data related to the position of said carrier is recorded and images of said at least one three-dimensional pattern are recorded in at least two different optical configurations of said at least one illuminator, said pattern generator,and at least one camera. Said recorded image data is compared with image data of a reference database comprising interrelated image and position data related to the three-dimensional pattern of light in space of the pattern generator, and pairs of similar images are found. Image translation off set data is derived for each pair of similar images,and translation and rotation data are derived for calibration or improving the positioning of the computer-controlled machine based on image translation offset data related to a plurality of different optical configurations. |
