Method and apparatus for locating an object in space

Spatial location of an object (1), which has identifying luminescent marks (3), by determination of trace positions of the marks on an image taken with a camera (4), such as a video camera. The mark positions are then determined with respect to the capture device, by use of the trace positions on th...

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Bibliographic Details
Main Authors VIALA, MARC, LETELLIER, LAURENT
Format Patent
LanguageEnglish
French
German
Published 19.12.2001
Edition7
Subjects
CALCULATING
COMPUTING
COUNTING
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
HANDLING RECORD CARRIERS
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
TESTING
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Summary:Spatial location of an object (1), which has identifying luminescent marks (3), by determination of trace positions of the marks on an image taken with a camera (4), such as a video camera. The mark positions are then determined with respect to the capture device, by use of the trace positions on the images. Optimisation of the trace positions is obtained in a step which models the traces as predetermined geometric functions and calculates the positions using the function that most closely models with the traces. The best agreement is determined by minimisation of the luminescent intensity between trace and geometric function on an image containing both. The geometric function is a Gaussian intensity function with variable parameters.
Bibliography:Application Number: EP19980400444