| dc.description.abstract | In this work the point spread function of an infrared (IR) microscope was estimated. The experimental set-up is composed of an objective lens Janos Technology Asio, where scene size is 1.49x1.99 mm, with a spatial resolution of 256x320 pixels, which operates in the middle band of the infrared spectrum. The camera used with the lens is a brand Sofradir model EC-IRE 320M, and its spectral response is between 3.7 and 4.8 microns. The analog/digital converter is 14-bit with a frame rate of 1 to 320Hz. The set-up considers a black body radiator brand Mikron model M315X12, it operates since room temperature to 400 °C with a thermal resolution of 0.1 °C.
The estimation of PSF was performed, where is assumed that the two-dimensional PSF can be written as a product of a component in the x axis and the y axis. Then, such both components are registered using a scene where an abrupt step is recorded. In this case, a step temperature is generated by the black body and a metal Target. The results is shown and validated by correcting a blurred image using the PSF with a deconvolution algorithm, using infrared-simulated and real IR data.
Key words: Infrared Imaging; Point Spread Function (PSF); Restoration Image; Optical System; Image Processing. | |
