A method for image processing light data from a wedge imager , said wedge imager comprising: a wedge , a first image sensor and a second image sensor , the method comprising: inputting image data from the first image sensor , said first image sensor capturing image data of a plurality of bands from a first parity of light transmitted by the wedge imager , said wedge imager comprising a first substantially flat surface and a second substantially flat surface ; inputting image data from the second image sensor , said second image sensor capturing image data of a plurality of bands from a second parity of light transmitted by said wedge imager ; mapping each said band from said first parity and said second parity according to an arc segment associated with each said band to form a plurality of undistorted arc segments, each undistorted arc segment associated with one of said bands; and stitching the image of each of said undistorted arc segments together to form an image of the input at the first substantially flat surface ; wherein mapping each said band further comprises: mapping the image input at x-y positions across said first substantially flat surface substantially to a wedge layout angle β representing an angle of the wedge including all bounces of light off surfaces, up to the point of escaping total internal reflection, TIR, of said first substantially flat surface for a given x-y position across said first substantially flat surface ; and converting said wedge layout angle β to a sag height of the resulting arc curved imaging surface with respect to distance from said first substantially flat surface along z, the imaging surface depicting the TIR-escaped image surface for the wedge . inputting image data from the first image sensor , said first image sensor capturing image data of a plurality of bands from a first parity of light transmitted by the wedge imager , said wedge imager comprising a first substantially flat surface and a second substantially flat surface ; inputting image data from the second image sensor , said second image sensor capturing image data of a plurality of bands from a second parity of light transmitted by said wedge imager ; mapping each said band from said first parity and said second parity according to an arc segment associated with each said band to form a plurality of undistorted arc segments, each undistorted arc segment associated with one of said bands; and stitching the image of each of said undistorted arc segments together to form an image of the input at the first substantially flat surface ; mapping the image input at x-y positions across said first substantially flat surface substantially to a wedge layout angle β representing an angle of the wedge including all bounces of light off surfaces, up to the point of escaping total internal reflection, TIR, of said first substantially flat surface for a given x-y position across said first substantially flat surface ; and converting said wedge layout angle β to a sag height of the resulting arc curved imaging surface with respect to distance from said first substantially flat surface along z, the imaging surface depicting the TIR-escaped image surface for the wedge . <EOS>