System for planning an earth-moving operation to be performed by a construction machine , the construction machine having a tool for performing the earth-moving operation and a machine control unit for at least partially controlling the earth-moving operation, the system comprising - a measuring system configured for capturing three-dimensional measuring data of an uneven terrain in a surrounding of the construction machine in at least a first detection range; - a context camera having a known position relative to the measuring system and/or the three-dimensional measuring data and being configured for capturing context image data of the terrain within the first detection range; - a user interface configured for displaying at least one context image based on the context image data to an operator of the construction machine , and for receiving user input from the operator of the construction machine , the user input being interpretable as or comprising a selection of pixels of the context image ; and - a computing unit operatively coupled at least with the measuring system and the user interface , characterized in that the computing unit is configured for - generating, based on the three-dimensional measuring data, a three-dimensional terrain model of the terrain within the first detection range, - interpreting the user input as a selection of pixels of the context image ; - mapping , taking into consideration the known relative position of the context camera , the selection of pixels to a surface of the three-dimensional terrain model; - determining 3D coordinates on the surface based on the mapping; and - providing the 3D coordinates to the machine control unit for at least partially controlling the earth-moving operation based on the 3D coordinates. - a measuring system configured for capturing three-dimensional measuring data of an uneven terrain in a surrounding of the construction machine in at least a first detection range; - a context camera having a known position relative to the measuring system and/or the three-dimensional measuring data and being configured for capturing context image data of the terrain within the first detection range; - a user interface configured for displaying at least one context image based on the context image data to an operator of the construction machine , and for receiving user input from the operator of the construction machine , the user input being interpretable as or comprising a selection of pixels of the context image ; and - a computing unit operatively coupled at least with the measuring system and the user interface , - generating, based on the three-dimensional measuring data, a three-dimensional terrain model of the terrain within the first detection range, - interpreting the user input as a selection of pixels of the context image ; - mapping , taking into consideration the known relative position of the context camera , the selection of pixels to a surface of the three-dimensional terrain model; - determining 3D coordinates on the surface based on the mapping; and - providing the 3D coordinates to the machine control unit for at least partially controlling the earth-moving operation based on the 3D coordinates. <EOS>