초록 ▼

A method for generating a high resolution image in a radiation imaging system which produces multiple exposure signals from a movable detector array is disclosed. The image data signals or image acquisition signals generated from the image detector assembly of the image radiation system during an im

A method for generating a high resolution image in a radiation imaging system which produces multiple exposure signals from a movable detector array is disclosed. The image data signals or image acquisition signals generated from the image detector assembly of the image radiation system during an imaging cycle are passed through a finite impulse response filter having a combined frequency response comprised of an inverse filter frequency response portion and a noise regularization frequency response portion such that the noise regularization decrease the frequency response of the filter as the frequency of the data signals increase thereby effectively preventing blurring of the image produced from the image data signals.

대표청구항 ▼

[ What is claimed is:] [25.] A radiation imaging system comprising:a photosensor pixel array, said array adapted to generate an image data signal being sequentially disposed in selected ones of a plurality of sequential imaging positions pursuant to a predetermined imaging cycle, each of said sequen

[ What is claimed is:] [25.] A radiation imaging system comprising:a photosensor pixel array, said array adapted to generate an image data signal being sequentially disposed in selected ones of a plurality of sequential imaging positions pursuant to a predetermined imaging cycle, each of said sequential imaging positions being selected so as to oversample the imaged area; andan image processor coupled to said photosensor pixel array so as to receive the respective image data signals generated, said image processor being adapted to store said respective image data signals generated during an imaging cycle in each of said respective sequential imaging positions as an unfiltered data set, said image processor further comprising a finite impulse response deblurring filter adapted to selectively filter said data set to generate a non-aliased fine resolution data set having spatial resolution greater than the imaging system Nyquist frequency determined by pixel pitch of said photosensor, array, said deblurring filter having a combined frequency response comprising an inverse filter frequency response portion and a noise regularization frequency response portion wherein the noise regularization decreases the frequency response of the filter as the frequency of the signal increases.