Calibração radiométrica relativa da câmara CCD dos satélites CBERS-2 e CBERS-2B / Relative radiometric calibration of satellites CBERS-2 and CBERS-2B CCD camera

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

The satellites CBERS-2 and CBERS-2B were launched in 2003 and 2007, respectively. The images are received by reception station in Cuiabá and processed before being available to the users. In this step of the image processing, radiometric and geometric corrections are performed to improve image quality. One of the radiometric correction techniques is the relative calibration, which aims to homogenize the detector responses so that they have the same digital value when reached by a signal of same intensity. Therefore, given the need to generate images with good radiometric quality, this work aims to implement and evaluate a method to perform the relative calibration of CBERS-2 and CBERS-2B CCD camera. An evaluation of the distortion in the response of CCD camera detectors is also presented. To perform the evaluation, the proposed method was tested with images from three kinds of targets: agriculture, urban and vegetation.

ASSUNTO(S)

computação aplicada câmara camera calibração calibration calibration cbers radiometria camera radiometry radiometry

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