Measurement method, measurement systems and auxiliary measurement instruments for displaying desired positions in a live image

A measurement system for surveying or staking out measurement points having surveying functionality, wherein the surveying system comprises:

• a room-based surveying device which can be absolutely located,
• a handheld auxiliary measurement instrument, wherein the auxiliary measurement instrument comprises:
• a handheld carrier,
• a mobile computer terminal supported by the carrier and including a display screen and a first camera,
• means for determining or making determinable a pose of the auxiliary measurement instrument,
• wherein upon execution of the surveying functionality:
• the pose of the auxiliary measurement instrument and thus the computer terminal relative to the surveying device is uniquely determined, wherein at least one pose-dependent degree of freedom is determined by the surveying device,
• a measurement environment image is recorded by means of the first camera, and
• the measurement environment image is displayed on the display screen, wherein at least one measurement point is displayed overlaid faithfully in position on the measurement environment image using the determined pose of the computer terminal.

A room-based surveying system comprising:

• a surveying device, wherein the surveying device comprises:
• a distance and direction measuring functionality, whereby a distance and direction to a target to be surveyed in a measurement environment of the surveying device is determinable in the direction of a target axis of the surveying device,
• at least one drive for automated pivoting of the target axis, and
• comprises at least one camera aligned in the direction of the target axis by means of which an image of a detail of the measurement environment is recordable,
• a display screen,
• a controller having evaluation functionality,
• wherein the controller comprises a target acquisition function, upon the execution of which:
• an overview image of the measurement environment is recorded from a location of the surveying device,
• the overview image is displayed on the display screen,
• a manual selection of a target region containing the target on a basis of the displayed overview image by a user is registered,
• the target axis is automatically aligned in the direction of the target region by means of the drive on basis of the registered manual definition as a rough alignment on the target,
• an image of the target region, which corresponds to an enlarged detail from the overview image, is recorded by means of the camera aligned in the direction of the target axis,
• a manual selection of the target on the basis of the displayed target region image is registered,
• the target axis is automatically aligned on the target by means of the drive on basis of the registered manual target selection, so that the target can be surveyed by means of the distance and direction measuring functionality.