Inversion of Pulsed Thermal Wave Images for Recovery of the Shape of the Object

摘要

An outstanding problem of thermal wave imaging has been the blurring of theimages, because of the lateral diffusion of heat in the sample. We demonstrate here, both theoretically and experimentally, that this blurring is not due to any inherent loss of information in the diffusion process, but that it can, in fact, be removed by appropriate processing of the image. The result is a very significant improvement of the resolution of the thermal wave imaging process.