Abstract: An inspection method includes comparing an inspection image of an inspection object to a reference image of a reference object, recognizing at least one inspection part in the inspection image and at least one reference part in the reference image, wherein the inspection part and the reference part correspond to each other, registering the inspection image onto the reference image using the inspection part and the reference part and providing a set of registration data, and checking for at least one error using the inspection image, the reference image, and the set of registration data.

Abstract: A method for repeatedly measuring the position of a construction device on a construction site, wherein a position is measured relative to at least two, the method comprising: a. directly measuring the distances from a position measurement system arranged and/or formed on the construction device to at least two of the markings located in a field of view of the position measurement system and measuring the apparent viewing angles of the at least two of the markings from the position measurement system to carry out a first measurement of the position of the construction device and b. taking a bearing of at least two of the markings from the position measurement system to carry out a second measurement of the position of the construction device.

Abstract: A method of monitoring a building element includes using an image capturing device and a computing device, in attributing a visual feature to each one of a first and a second region of the element; taking a first plurality of images of the visual features by the capturing device at a first point of time; taking a second plurality of images of the visual features by the capturing device at a second point of time; causing the computing device to process the images of the first and the second plurality of images to derive at least one of distances between the two visual features and relative orientations of the two visual features within the first and the second plurality of images; and causing the computing device to deduce a state of the element from at least one of the difference between the distances and the difference between the relative orientations.

Abstract: An inspection method includes comparing an inspection image of an inspection object to a reference image of a reference object, recognizing at least one inspection part in the inspection image and at least one reference part in the reference image, wherein the inspection part and the reference part correspond to each other, registering the inspection image onto the reference image using the inspection part and the reference part and providing a set of registration data, and checking for at least one error using the inspection image, the reference image, and the set of registration data.

Abstract: Method for creating a spatial model of a target object with a hand-held distance measuring device, the device comprising a laser distance meter, a camera, a computing unit and a data storage device, the method comprising measuring with the laser distance meter one or more distances to the target object from different positions, storing the measured distances in the data storage device, capturing with the camera a plurality of images of the target object, wherein each of the measured distances is associated with one of the captured images, determining with the computing unit relative camera poses for the plurality of images, and calculating with the computing unit based on the plurality of images and on the determined relative camera poses a three-dimensional geometry of the target object.

Abstract: Method for creating a spatial model of a target object with a hand-held distance measuring device, the device comprising a laser distance meter, a camera, a computing unit and a data storage device, the method comprising measuring with the laser distance meter one or more distances to the target object from different positions, storing the measured distances in the data storage device, capturing with the camera a plurality of images of the target object, wherein each of the measured distances is associated with one of the captured images, determining with the computing unit relative camera poses for the plurality of images, and calculating with the computing unit based on the plurality of images and on the determined relative camera poses a three-dimensional geometry of the target object.