Patent · US Active

Method for measuring the growth of leaf disks of plants and apparatus suited therefor

US8391591B2 · kind B2 · utility

0Cited by

6References

16Claims

0Family size

Assignee

Forschungszentrum Jülich GmbH · DE

Inventors

Bernhard Biskup · Lohmar, DE
Andreas Fischbach · Eppelheim, DE
Hanno Scharr · Heidelberg, DE

Key dates

Filing date	Nov 11, 2009
Grant date	Mar 5, 2013
Priority date	—
Expiry date	Jan 7, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG06T7/62
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Disclosed is a method and an apparatus for measuring the growth of leaf disks. The method comprises the following steps: a) Calibrating the capture system, b) capturing at least 2 images of a leaf disk, c) processing the image data, comprising i) segmenting the leaf disks by threshold segmentation, ii) multiple morphological erosion steps, iii) edge cleaning to remove the edge of the storage vessel, d) 3D reconstruction: generating a disparity map by means of a stereo algorithm, calculating a 3D surface model based on the previously determined calibration parameters from the disparity map, e) smoothing the previously obtained surface model, f) determining the growth rates from the time series of the areas. The apparatus comprises at least one camera, a lighting unit, a translation table in the X/Y plane for the camera and (infrared) lighting, storage vessels for leaf disks, and electronic evaluation and control units.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.