Deliverable D6.5 is a demonstrator of the development and assessment of a validation method for assessment of plant trait extraction from the ROMI pipeline. The demonstrator is provided as a full standalone docker image that contains pedagogical jupyter notebooks to run and discover our programs. The demonstrator notebooks are meant to present in a pedagogic manner the tools we developed to assess how good a phyllotaxis measure is and how good this assessment is. In brief, it allows anybody to simulate phyllotaxis data (pair of sequences consisting of ground truth sequences and their error-prone measures), assess the measure performance with our new program ‘sm-dtw’ (detect errors and quantify precision) and control that this program correctly interpret the differences between the measure and its ground truth reference.