Abstract: A method for calibrating a laser three-dimensional digitizing sensor. First, a three-dimensional coordinator X-Y-Z is defined and a calibrating surface is provided. Second, a first mapping table of a two-dimensional digital image to the Z axis is established by translating the calibrating surface along the Z axis. Subsequently, the calibrating surface rotates along the Y axis by a predetermined angle and translates along the Z axis to establish the second mapping table of the two-dimensional digital image and the X axis according to the first mapping table.

Abstract: A method of reconstructing a regular 3D model by feature-line segmentation. The inventive method first inputs original 3D model data, builds 3D feature-lines, and converts the 3D feature-lines into 3D threads. The 3D threads have connection joints, connection lines, and loops. Next, the method determines sample numbers of the connection lines, adds or deletes the loops, and outputs the 3D threads. Finally, a regular triangular grid sample model is then produced according to the 3D threads and projected into the original 3D model to produce a reconstructed 3D model. The reconstructed 3D model can be adjusted if resolution requirements are still unsatisfied.

Abstract: A method for calibrating a laser three-dimensional digitizing sensor. First, a three-dimensional coordinator X-Y-Z is defined and a calibrating surface is provided. Second, a first mapping table of a two-dimensional digital image to the Z axis is established by translating the calibrating surface along the Z axis. Subsequently, the calibrating surface rotates along the Y axis by a predetermined angle and translates along the Z axis to establish the second mapping table of the two-dimensional digital image and the X axis according to the first mapping table.

Abstract: A three-dimensional scanning system, that scans a three-dimensional object and calculates a three-dimensional coordinate data from a surface of the object. The three-dimensional scanning system has a photoelectron detector, a rotational scanning device, a drive device, an image processing circuit, and an operational control device. The photoelectron detector projects a light plane onto the object and then receives a reflected light stripe. The rotational scanning device couples with the photoelectron detector that rotates on a fixed pivot and allows the light stripe to scan on the object's surface. The drive device couples to and operates the photoelectron detector and the rotational scanning device. The image processing circuit can grab the light stripe instantly. The operational control device couples with the rotational scanning device and the photoelectron detector.

Abstract: A three-dimensional scanning system, that scans a three-dimensional object and calculates a three-dimensional coordinate data from a surface of the object. The three-dimensional scanning system has a photoelectron detector, a rotational scanning device, a drive device, an image processing circuit, and an operational control device. The photoelectron detector projects a light plane onto the object and then receives a reflected light stripe. The rotational scanning device couples with the photoelectron detector that rotates on a fixed pivot and allows the light stripe to scan on the object's surface. The drive device couples to and operates the photoelectron detector and the rotational scanning device. The image processing circuit can grab the light stripe instantly. The operational control device couples with the rotational scanning device and the photoelectron detector.