Fig. 6From: Schlieren imaging: a powerful tool for atmospheric plasma diagnosticUnprocessed schlieren frame of the discharge of a nanosecond-pulsed DBD (left) and the same frame in which the heated region produced by the discharge is estimated by means of an algorithm processing the light intensity (right) [64] © Deutsche Physikalische Gesellschaft. Reproduced by permission of IOP Publishing. CC BY-NC-SABack to article page