Device and method for detecting a plant against a background using photographs with different levels of brightness

摘要

A device for detecting a plant against a background includes a provider for providing a plurality of different photographs of the plant leaf against the background, the photographs differing in that image points of the different photographs relating to the same location of the plant leaf are illuminated with different levels of brightness, a selector for selecting such image points, from the different photographs, whose levels of brightness are within a predetermined range, an image point of a first photograph being selected for a first location of the plant leaf, and an image point of a second, different photograph being selected for a different location of the plant leaf to obtain a representation of the plant leaf against the background, the representation being composed of and/or merged from different photographs, and a segmenter for segmenting the composite photograph to obtain a segment representation having the plant leaf without the background or the background without the plant leaf.

主权项

1. A device for detecting a plant against a background, comprising:
a provider that provides a plurality of different photographs of the plant leaf against the background, the photographs differing in that image points of the different photographs which relate to the same location of the plant leaf comprise different levels of brightness; a selector that selects such image points, from the different photographs, whose levels of brightness are within a predetermined range, an image point of a first photograph being selected for a first location of the plant leaf, and an image point of a second, different photograph being selected for a different location of the plant leaf so as to acquire a representation of the plant leaf against the background, said representation being a composite photograph and being composed of and/or merged from different photographs; and a segmenter that segments the composite photograph so as to acquire a segment representation comprising the plant leaf without the background or the background without the plant leaf; wherein at least one of the provider, the selector, and the segmenter comprises a hardware implementation.