| 摘要 |
<p>Digital image processing process for constructing a calculated image, termed the target image (I<*>), which represents a source image (I) reconstructed together with modifications to the angles of elevation and azimuth, and to the scale factor in relation to this source image, comprising the determination of a common vanishing point (P) for the source image (I) and the target image (I<*>), and of an orthonormal reference frame; the defining of an image (H<*>) termed the projection of the target image (I<*>), with geometrical centre ( OMEGA H<*>) aligned with the optical axis (PZ<*>) of the target image, with zero angle of elevation, with the same angle of azimuth ( theta <*>) and with the same framing (2Vx<*>, 2Vy<*>) as the target image (I<*>) so that each pixel (M<*>) with address (X<*>, Y<*>) in the target image (I<*>) has a counterpart under projection (MH<*>) with the same address (X<*>, Y<*>) in the projection image (H<*>); the calculation by a trigonometric function (G<-1>), for each pixel (M<*>) with address (X<*>, Y<*>) in the target image, of the spherical coordinates ( alpha , ss) defining, in the reference frame, the radius joining the origin (P) to the corresponding pixel (MH<*>) of (H<*>). Application: surveillance systems. <IMAGE></p> |
