Processing methods for coded aperture imaging

G - Physics – 01 – T

Patent

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G01T 1/29 (2006.01)

Patent

CA 2641057

The present invention relates to processing of coded aperture images. Multiple frames of data acquired by the coded aperture imaging system, each with a different coded aperture array, are processed to form an image. The processing incorporates the constraints that the image solution must be positive and that the solution should be zero outside an expected image region. In one embodiment image enhancement may involve dividing the processed image into image regions having a spatially invariant point spread function and solving an inverse problem for each image region to reduce image blurring.

L'invention concerne le traitement d'images à ouverture codée. Plusieurs trames de données acquises par le système d'imagerie à ouvertures codées, chacune avec un réseau d'ouvertures codées différent, sont traitées de façon à former une image. Le traitement comporte des contraintes, à savoir que la solution d'image doit être positive et que la solution devrait être zéro à l'extérieur d'une zone d'images escomptée. Dans un mode de réalisation, l'amélioration de l'image peut impliquer la division de l'image traitée en zones d'images ayant une fonction d'étalement de point spatialement invariante et la résolution d'un problème inverse pour chaque zone d'images pour réduire le flou d'une image.

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