Method and device for processing an image in order to construct

Details Method and device for processing an image in order to construct Method and device for processing an image in order to construct

1994-12-20

1997-01-14

Herndon, Heather R.

G06T 300

Patent

active

055948456

ABSTRACT:
Method of processing a digital image in order to construct a calculated image, termed the target image (I*), which represents a so-called source image (I) reconstructed with modifications to the tilting angle, panning angle and scale factor in relation to this source image, including the determination of a common view point (P) for the source image (I) and the target image (I*), and of an orthonormal reference frame; the definition of an image (H*) termed the projection of the target image (I*), with geometrical center (.OMEGA..sub.H *) aligned with the optical axis (PZ*) of the target image, with zero tilting angle, with the same panning angle (.THETA.*) and the same framing (2V.sub.x*, 2V.sub.y *) as the target image (I*) so that every pixel (M*) with address (X*, Y*) in the target image (I*) has a counterpart under projection (M.sub.H *) with the same address (X*, Y*) in the projection image (H*); the calculation by a trigonometric function (G.sup.-1), for every pixel (M*) with address (X*, Y*) in the target image, of the spherical coordinates (.alpha., .beta.) defining, in the reference frame, the ray linking the origin (P) to the corresponding pixel (M.sub.H *) of (H*).

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"Computer Image Processing And Recognition" E. K. Hall, Academic Press 1979 Chapter 3, pp. 76 Et Seq. pp. 76-88.

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