Abstract: A method for solving the initial azimuth for a survey instrument, and other devices, with position and tilt information. The method may be part of bundle adjustment performed during the processing of image and position data collected from each camera of a survey instrument. The use of the initial azimuth generation method (and initial azimuth generator) makes it possible to get accurate azimuth orientation of a camera, such as each camera of a multi-camera survey instrument, without using data from a compass-like sensor. The initial azimuth generated by this method can then be used in later steps/processes of the bundle adjustment to find tie-points with an automatic tie-point finder. Prior to this method, the automatic tie-point finding algorithm relied on the compass and its accuracy, and inaccurate compass values would cause a complete failure, slow runtimes, or less accurate results for the bundle adjustment.

Abstract: A method for solving the initial azimuth for a survey instrument, and other devices, with position and tilt information. The method may be part of bundle adjustment performed during the processing of image and position data collected from each camera of a survey instrument. The use of the initial azimuth generation method (and initial azimuth generator) makes it possible to get accurate azimuth orientation of a camera, such as each camera of a multi-camera survey instrument, without using data from a compass-like sensor. The initial azimuth generated by this method can then be used in later steps/processes of the bundle adjustment to find tie-points with an automatic tie-point finder. Prior to this method, the automatic tie-point finding algorithm relied on the compass and its accuracy, and inaccurate compass values would cause a complete failure, slow runtimes, or less accurate results for the bundle adjustment.

Abstract: The invention relates to a method and device for contactless or touch-free measurement of a tool by imaging. A processor makes calculations based on image points on the tool, imaged onto an imaging area. Optics present the image of the image points on the tool on the imaging area. The processor calculates the momentary position and/or orientation along at least one axis of the tool making use of the image points. A number of measuring markers have predetermined mutual positions and are on the tool. Each measuring marker comprises at least one measuring point. At least one of the points is identifiable. Each measuring marker to be used as position and/or orientation indicator has a size making it restorable by the processor even if a part of it on the tool is obscured from the image area, for example by dust.