Title :
Diffraction-limited depth-from-defocus
Author :
Mair, C. ; Goodman, C.J.
Author_Institution :
Sch. of Electron. & Electr. Eng., Birmingham Univ., UK
fDate :
11/23/2000 12:00:00 AM
Abstract :
A depth-from-defocus reconstruction formula for a diffraction-limited imaging system is derived. The result shows that the commonly used reconstruction formula obtained from geometric optics does not hold for large sensor displacements. Moreover, it suggests that the unknown correction factor of the geometrical reconstruction formula equals 1/π
Keywords :
geometrical optics; geometrical theory of diffraction; image reconstruction; optical focusing; depth-from-defocus reconstruction formula; diffraction-limited imaging system; geometric optics; geometrical reconstruction formula; large sensor displacements; unknown correction factor;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20001393
