![]() ![]() Agricultural and Forest Meteorology 86, 1-15.Engauge Digitizer is an open-source plot digitizing software that allows you to scan images and plot the data with detailed axes. (1997): Leaf orientation and sunlit leaf area distribution in cotton. (2000): Assessing the geometric structure of a white clover (Trifolium repens L.) canopy using 3-d digitizing. thesis, University of Technology at Cottbus. (2008): Design and Implementation of a Graph Grammar Based Language for Functional-Structural Plant Modelling. (2003): MODICA and MODANCA: modelling the three-dimensional shoot structure of graminaceous crops from two methods of plant description. (2008): A double-digitizing method for building 3D virtual trees with non-planar leaves – application to the morphology and light capture properties of young beech trees (Fagus sylvatica). Peter Surový, University of Evora (Portugal). in games.Ĭooperation partner and additional external adviser: Dr. Potential applications go beyond the field of plant modelling, for instance the device can be used to capture the exact shape of real objects for their use in virtual environments, e.g. ![]() Tests shall be documented to demonstrate practical usability of the new software, including a full measurement campaign at a whole plant. Following the processing pipeline for the 3-d data, the tools for handling sets of geometrical primitives and point clouds in GroIMP shall be improved. Nevertheless, an interface to GroIMP has to be implemented as well. for frequently repeated patterns, to speed up the acquisition process.įurthermore, the requirements of this "intermediate software" are different from that of GroIMP (where the data finally should be stored), because it has to be used interactively during the process of measurement and thus has to be very quick and dedicated to its purpose. Shortcuts should be available for the user, e.g. Certain patterns should be detected automatically in the data. The new product should avoid these problems and should provide an extended set of features, including the possibility to capture supporting points for spline interpolation of leaf and flower shapes. A better software, PiafDigit, was developed at INRA (France), but its user interface is only in French and it has obviously memory leakages which makes it unstable. Together with the digitizer, Polhemus provides also a software, but this has a too poor functionality. ![]() ![]() To guide the person who makes the measurements, an "intelligent" software would be useful which precomputes the structure which can already be reconstructed from the existing data, and which helps organizing the next steps for data capture (finishing the branch, inserting missing diameter values, marking positions of leaves, fruits etc.). Using the digitizer requires some skills and some caution (e.g., no metal objects have to be present nearby). The intended information flow is from the digitizer to a dedicated graph-grammar based modelling platform, GroIMP (Kniemeyer 2008). It shall be used to acquire points from plant shoot systems and leaves, and also from root systems which are digged out from the ground, in order to have data as a basis for simulation models of plant growth and structure to be used in agronomy and forestry. This sort of device is used also in Virtual Reality. Design and implementation of an intelligent data interface between an electromagnetic 3-d digitizer and a graph-based modelling softwareĪs an alternative to utilize laser scanning for the acquisition of the 3-d structure of vegetation, there is a device consisting of an electromagnetic sender and a receiver which permits to track the 3-d coordinates of every point in space which is marked using a sort of "3-d pen" (Polhemus Fastrak digitizer). ![]()
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