Method for visualizing a plan in real dimensions and for constructing an object

1 . A method of visualizing a plan in real dimensions, wherein,

in a calibration step, using a grid reflection method, a transmission pattern is projected onto a projection surface by means of a projection unit, and a reception pattern reflected from the projection surface is detected by at least two sensor units, and a surface shape and a location of the projection surface in relation to a position of the projection unit and to a position of the sensor units are detected by means of a computer unit connected to the projection unit and the sensor units, based on a distortion of the reception patterns in comparison to the transmission pattern, and

a projection distortion is performed on the plan by means of the computer unit based on the surface shape and the location of the projection surface in relation to the projection unit, as detected in the calibration step, and the distorted plan is projected by the projection unit onto the projection surface in such a way that the projected plan on the projection surface corresponds to an undistorted, plane representation of the plan in real dimensions,

wherein the method furthermore comprises, prior to said calibration step:

installing a first system including the at least two sensor units and the projection unit on a first support in a relative position to one another,

pre-calibrating the two sensor units and the projection unit relative to one another in a reference environment, the computer unit determining the relative position of the two sensor units and the projection unit relative to one another on a basis of recordings of the calibration pattern on the calibration surface, as detected by the sensor units,

moving the first support with the two sensor units installed thereon and the projection unit from the reference environment to a place of use where said calibration step and the projection of the distorted plan are carried out.

2 . The method according to claim 1 , further comprising a second support, wherein the second support comprises a second system including at least two sensor units and one projection unit, wherein the first support with the first system and the second support with the second system are pre-calibrated and installed at the place of use where the calibration step is carried out for first and second systems located on the respective first and second supports, wherein the sensor units of the first and second systems each have a field of view such that a transmission pattern emitted by the projection unit of the first system is located at least partially within a field of view of the sensor units of the second system so that a relative mutual distance between the first and second systems can be determined.

3 . The method according to claim 1 , wherein

the calibration step is repeated after a predetermined period of time, after a change in a temperature of the projection unit by more than a predetermined threshold value, as detected by means of a temperature sensor, after a user input on the computer unit, and/or after a shock or movement of the projection unit and/or the sensor units, as detected by means of a position sensor.

4 . The method according to claim 1 , wherein

the calibration step is performed additionally for at least one second projection unit, with a second transmission pattern being projected onto the projection surface by means of the at least one second projection unit, and a second reception pattern reflected from the projection surface being detected by the sensor units, and the surface shape and the location of the projection surface in relation to a position of the at least one second projection unit and to the position of the sensor units are detected by means of the computer unit connected to the at least one second projection unit and the sensor units, based on a distortion of the second reception pattern in comparison to the second transmission pattern;

a projection distortion is performed on a second plan by means of the computer unit based on the surface shape and the location of the projection surface in relation to the second projection unit, as detected in the calibration step, and the distorted second plan is projected by the second projection unit onto the projection surface in such a way that the projected second plan on the projection surface corresponds to an undistorted, plane representation of the second plan in real dimensions.

5 . The method according to claim 4 , further comprising steps of:

detecting a number of constructional elements arranged on the projection surface by means of the sensor units;

comparing the detected number of constructional elements with a number of constructional elements as intended in the projected plan.

6 . The method according to claim 5 , further comprising a step of:

issuing an optical and/or acoustic signal by means of the projection unit and/or a loudspeaker, if the detected number of constructional elements corresponds to and/or deviates from the intended number of constructional elements.

7 . The method according to claim 5 , wherein

the calibration step is performed once more, if the number, the shape and the position of the constructional elements arranged on the projection surface correspond to the number, shape and position intended in the projected plan.

8 . The method according to claim 5 , wherein,

if the number, the shape and the position of the constructional elements arranged on the projection surface correspond to the number, shape and position intended in the projected plan, a projection distortion is performed on a further plan by means of the computer unit based on the surface shape and the location of the projection surface in relation to the projection unit, as detected in the calibration step, and the distorted further plan is projected by the projection unit onto the projection surface in such a way that the projected further plan on the projection surface corresponds to an undistorted, plane representation of the further plan in real dimensions.

9 . The method according to claim 1 , wherein

at least one position marker is included in the projected plan, and the method comprises detecting the position marker with an augmented reality-enabled portable device, the augmented reality-enabled portable device determining its position in relation to the projected plan on the basis of the detected position marker and supplementing the projected plan with a two-dimensional or three-dimensional representation of a constructional element in real dimensions.

10 . The method according to claim 9 , wherein

the augmented reality-enabled portable device is a smartphone, augmented reality glasses, or a tablet computer.

11 . A method of constructing an object, comprising the method of visualizing a plan in real dimensions according to claim 1 , comprising steps of:

arranging at least one constructional element contained in the projected plan according to a position on the projection surface that is intended for this constructional element in the projected plan;

determining a deviation of a position and/or a shape of the constructional element arranged on the projection surface from the position intended for this constructional element in the projected plan and/or a predetermined shape, using the sensor units;

correcting the position of the constructional element arranged on the projection surface so that it corresponds to the position intended for this constructional element in the projected plan and/or replacing the constructional element arranged on the projection surface with a constructional element whose shape corresponds to the predetermined shape.

12 . The method according to claim 11 , further comprising steps of:

issuing an optical and/or acoustic signal by means of the projection unit and/or a loudspeaker, if the position and/or the shape of the constructional element on the projection surface deviates from and/or corresponds to the position intended for this constructional element in the projected plan and/or the predetermined shape.

13 . The method according to claim 11 , further comprising steps of:

detecting a position of a person within the projection surface by means of the sensor units, and

issuing an optical and/or acoustic signal by means of the projection unit and/or a loudspeaker, if the person approaches a predetermined area of the projected plan closer than by a predetermined distance.

14 . The method according to claim 11 , wherein

the determination of the deviation of the position and/or the shape of the constructional element arranged on the projection surface from the position intended for this constructional element in the projected plan and/or the predetermined shape occurs by means of the sensor units using a further grid reflection method, the projected plan being used as a further transmission grid.

15 . The method according to claim 1 , wherein,

during implementation of a process step of arranging at least one constructional element contained in the projected plan, a point in time at which the process step begins and/or a point in time at which the process step ends is/are each time recorded by the computer unit, with the recorded points in times being readable via an interface of the computer unit.

16 . A computer program product comprising a non-transitory computer readable medium including instructions configured to perform the method according to claim 1 .

17 . A method of visualizing a plan in real dimensions, wherein,

in a calibration step, using a grid reflection method, a transmission pattern is projected onto a projection surface by means of a projection unit, and a reception pattern reflected from the projection surface is detected by at least two sensor units, and a surface shape and a location of the projection surface in relation to a position of the projection unit and to a position of the sensor units are detected by means of a computer unit connected to the projection unit and the sensor units, based on a distortion of the reception patterns in comparison to the transmission pattern, and

a projection distortion is performed on the plan by means of the computer unit based on the surface shape and the location of the projection surface in relation to the projection unit, as detected in the calibration step, and the distorted plan is projected by the projection unit onto the projection surface in such a way that the projected plan on the projection surface corresponds to an undistorted, plane representation of the plan in real dimensions,

wherein the calibration step is repeated after a predetermined period of time, after a change in a temperature of the projection unit by more than a predetermined threshold value, as detected by means of a temperature sensor, after a user input on the computer unit, and/or after a shock or movement of the projection unit and/or the sensor units, as detected by means of a position sensor.

18 . A method of visualizing a plan in real dimensions, wherein,

in a calibration step, using a grid reflection method, a transmission pattern is projected onto a projection surface by means of a projection unit, and a reception pattern reflected from the projection surface is detected by at least two sensor units, and a surface shape and a location of the projection surface in relation to a position of the projection unit and to a position of the sensor units are detected by means of a computer unit connected to the projection unit and the sensor units, based on a distortion of the reception patterns in comparison to the transmission pattern,

a projection distortion is performed on the plan by means of the computer unit based on the surface shape and the location of the projection surface in relation to the projection unit, as detected in the calibration step, and the distorted plan is projected by the projection unit onto the projection surface in such a way that the projected plan on the projection surface corresponds to an undistorted, plane representation of the plan in real dimensions,

detecting a number of constructional elements arranged on the projection surface by means of the sensor units; and

comparing the detected number of constructional elements with a number of constructional elements as intended in the projected plan.