TY - JOUR
T1 - Application and validation of image processing algorithms to reduce the stray light on the tj-ii thomson scattering diagnostic
AU - Farias, Gonzalo
AU - Dormido-Canto, Sebastián
AU - Vega, Jesús
AU - Pastor, Ignacio
AU - Santos, Matilde
PY - 2013/1
Y1 - 2013/1
N2 - Stray light is the main source of noise on the Thomson scattering diagnostic images of the TJ-II stellarator. The diagnostic provides temperature and density profiles of the plasma. A charge-coupled-device camera acquires images that are disturbed by noise, which, in some cases, can produce unreliable profiles. In this paper we describe three different approaches to reduce or mitigate the stray light on these images: exhaustive detection, extraction of regions with connected components, and extraction of regions with the approach of region growing. The performance of the two most interesting techniques is evaluated by a validation process. This process quantifies the noise eliminated by each method.
AB - Stray light is the main source of noise on the Thomson scattering diagnostic images of the TJ-II stellarator. The diagnostic provides temperature and density profiles of the plasma. A charge-coupled-device camera acquires images that are disturbed by noise, which, in some cases, can produce unreliable profiles. In this paper we describe three different approaches to reduce or mitigate the stray light on these images: exhaustive detection, extraction of regions with connected components, and extraction of regions with the approach of region growing. The performance of the two most interesting techniques is evaluated by a validation process. This process quantifies the noise eliminated by each method.
KW - Image processing
KW - Stray light
KW - Thomson scattering diagnostic
UR - http://www.scopus.com/inward/record.url?scp=84874066548&partnerID=8YFLogxK
U2 - 10.13182/FST12-477
DO - 10.13182/FST12-477
M3 - Article
AN - SCOPUS:84874066548
VL - 63
SP - 20
EP - 25
JO - Fusion Science and Technology
JF - Fusion Science and Technology
SN - 1536-1055
IS - 1
ER -