Method for ascertaining suitable positioning of measuring devices and simplified moving in measuring areas using VIS data and reference trajectories background

A computer program product having program code stored on a non-transitory machine-readable medium, configured as a control and evaluation unit, of a mobile measuring device, for carrying out at least the following steps of a method:

• optically capturing at the first deployment and tracking first measurement surroundings containing first object features using a visual inertial system (VIS),
• determining the number of measuring points in the first measurement region as the first point cloud,
• surveying a second measurement region from a second deployment, wherein based on this second survey the number of measuring points in the second measurement region is determined as a second point cloud,
• optically capturing and tracking second measurement surroundings containing second object features using a VIS within the scope of changing the deployment of the mobile measuring device,
• comparison of the first and the second measurement surroundings, wherein the comparison is based on searching for corresponding first and second object features visible in a certain number and quality in the first and second measurement surroundings, wherein this certain number and quality of corresponding features is a criterion that a registration of the first and second point cloud is possible,
• carrying out the comparison of the first and second measurement surroundings during the deployment change,
• informing the user about the result of the comparison during the deployment change, wherein the user is informed as:
• there is a point cloud registration of the first and the second point cloud possible, and/or
• there is a point cloud registration of the first and the second point cloud impossible;
• establishing existence of coverage gaps between the first point cloud and second point cloud;
• and
• providing the coverage gaps to the user as output, wherein the output is selected from the group of an acoustic signal, a vibrational signal, and/or an optical signal.

A mobile measuring device, comprising:

• one or more optical units embodied as visual inertial systems (VIS) to capture measurement surroundings containing object features and
• a deployment checking functionality,
• wherein the following is implemented automatically when carrying out the deployment checking functionality:
• optically capturing at the first deployment and tracking first measurement surroundings containing first object features by means of the one or more optical units using the VIS,
• determining the number of measuring points in the first measurement region as the first point cloud,
• surveying a second measurement region from a second deployment, wherein based on this second survey the number of measuring points in the second measurement region is determined as a second point cloud,
• optically capturing and tracking second measurement surroundings containing second object features using the VIS within the scope of changing the deployment of the mobile measuring device,
• comparison of the first and the second measurement surroundings, wherein the comparison is based on searching for corresponding first and second object features visible in a certain number and quality in the first and second measurement surroundings, wherein this certain number and quality of corresponding features is a criterion that a registration of the first and second point cloud is possible,
• carrying out the comparison of the first and second measurement surroundings during the deployment change,
• informing the user about the result of the comparison during the deployment change, wherein the user is informed as
• there is a point cloud registration of the first and the second point cloud possible, and/or
• there is a point cloud registration of the first and the second point cloud impossible;
• establishing existence of coverage gaps between the first point cloud and second point cloud;
• and
• providing the coverage gaps to the user as output, wherein the output is selected from the group of an acoustic signal, a vibrational signal, and/or an optical signal.