Biomedical subjects

Laurent Bigué

Publications and source records attributed to Laurent Bigué.

2 recordsLinked to original sources

PubMed2004

Target detection with a liquid-crystal-based passive Stokes polarimeter.

We present an imaging system that measures the polarimetric state of the light coming from each point of a scene. This system, which determines the four components of the Stokes vector at each spatial location, is based on a liquid-crystal polarization modulator, which makes it possible to acquire four-dimensional Stokes parameter images at a standard video rate. We show that using such polarimetric images instead of simple intensity images can improve target detection and segmentation performance.

Journal Article↗

PubMed2003

Active contour segmentation by use of a multichannel incoherent optical correlator.

We describe an optoelectronic incoherent multichannel processor that is able to segment an object in a real image. The process is based on an active contour algorithm that has been transposed to optical signal processing to accelerate image processing. This implementation requires exact-valued correlations and thus opens attractive perspectives in terms of optical analog computation. Furthermore, this optical multichannel processor setup encourages incoherent processing with high-resolution images.

Journal Article↗