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.
摘要:
The invention relates to a device for the parameterisation of a plant (101), comprising a recorder (100) for recording a three-dimensional data set (102) of said plant which comprises not just the volume elements of uncovered plant elements but also the volume elements of plant elements which are covered by other elements, as well as a parameterisation unit (200) for the parameterisation of the three-dimensional data set in order to obtain plant parameters (201).
摘要:
The material thickness of extended objects can be efficiently determined using two distance measuring devices which project a strip of measuring light onto the object to be measured and operate as light section measuring devices. The first distance measuring device determines the distance from the first main surface of the object, and the second distance measuring device determines the distance from the second main surface of the object, opposite to the first main surface. Potential measuring errors caused by variations of the distance between the two distance measuring devices, resulting from vibrations or thermal deformations, are avoided by the fact that the strip of measuring light of the two distance measuring devices also sweeps a reference object with a pre-determined thickness, such that the thickness of the object between the first main surface and the second main surface can be determined with a high level of precision and speed, on the basis of the measured distances from the main surfaces of the object and from the reference object, and the pre-determined thickness of the reference object.
摘要:
The invention relates to a method and a device for quality controlling a body with a surface. Said method and device enable a reliable quality control of vehicle tyres, to which lettering is applied as a relief and which have bulges or reductions in area as irregularities that are substantially devoid of edges.
摘要:
A device (100) for measuring a plant (105) comprises a plurality of light-section measuring devices (110), a rotator for causing a rotation (120) between the plant (105) and the plurality of light-section measuring devices (110) around a rotation axis (101), wherein each of the plurality of light-section measuring devices (110) is configured to generate a respective fan beam (130) in a respective fan plane, wherein the fan planes are arranged such that the rotation axis (101) extends within each of the fan planes, wherein the plurality of light-section measuring devices (110) is configured such that the fan beams (130) are directed to the plant (105) from different fan directions (135) which, when projected into a common plane (115) through which the rotation axis extends, by rotation around the rotation axis, differ from each other.