Method and system for detecting optical defects within a glass windshield

A computer implemented method for detecting optical defects within a glass windshield,

• wherein said method takes as input a map of angular distances between primary and ghost images of a periodical pattern viewed through said glass windshield, an image of the periodical pattern viewed through said glass windshield, and at least one input shape parameter of the individual features of the periodical pattern;
• wherein said method provides as output an image of optical defects,
• wherein said method comprises the following steps:
• (a) searching signal artefacts within said input map of angular distances;
• (b) searching individual feature of the periodical pattern in zones of the input image of the periodical pattern, wherein said zones matched those of the signal artefacts searched at step (a);
• (c) delineating by image processing the respective shape of the searched individual features;
• (d) comparing the input shape parameter of the individual features of the periodical pattern to a corresponding shape parameter of the delineated shapes of step (c);
• (e) generating an image from the input image of the periodical pattern, wherein the input shape parameter of the individual features of the periodical pattern does not match to the corresponding shape parameter of the delineated shapes, said generated image being the image of optical defects.