A method extracts a trajectory of an arrow in a binary image. The method extracts a skeleton of an arrow in the image and splits the skeleton into bones. For each of the bones, the method extends a bone to obtain an extended bone having both ends of the bone reaching a border of the arrow, and warps the extended bone into a straight line using a thin plate spline. For each bone, the method warps the binary image into a warped image using a thin plate spline with same parameters as the thin plate spline used to warp the extended bone into the straight line. For each bone, the method selects a component that includes a center point of the warped image, computes a symmetric error of the selected component, and selects, as the trajectory of the arrow, a bone where the selected component has the lowest symmetric error.
EXTRACTING TRAJECTORIES FROM ARROW PICTOGRAMS
2023-06-15
Patent
Electronic Resource
English
IPC: | G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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