Fourier-Space Image Restoration Ronald R. Parenti
... II Computational restoration techniques are frequently applied to twodimensional images when the propagation medium or noise in the sensing apparatus significantly corrupts the recorded image data. Deconvolution processes are among the oldest and best understood of these techniques, although nonl\ne ...
... II Computational restoration techniques are frequently applied to twodimensional images when the propagation medium or noise in the sensing apparatus significantly corrupts the recorded image data. Deconvolution processes are among the oldest and best understood of these techniques, although nonl\ne ...
Multifilamentation transmission through fog
... ⫻ 104 cm−3, so that the photon mean free path 共MFP兲 is about 5 m. Here, MFP is the average longitudinal length LM , along which an optical object of radius r will collide a droplet of radius R, L M = 1 / 共r + R兲2N. For an optical ray, we have r → 0, so that L M = 5 m guarantees a weak interaction o ...
... ⫻ 104 cm−3, so that the photon mean free path 共MFP兲 is about 5 m. Here, MFP is the average longitudinal length LM , along which an optical object of radius r will collide a droplet of radius R, L M = 1 / 共r + R兲2N. For an optical ray, we have r → 0, so that L M = 5 m guarantees a weak interaction o ...
INTRODUCTION:
... refraction between the core and the cladding changes less than it does for multimode fibers. Light thus travels parallel to the axis (as shown in figure 4), creating little pulse dispersion. Telephone and cable television networks install millions of kilometers of this fiber every year. Step index m ...
... refraction between the core and the cladding changes less than it does for multimode fibers. Light thus travels parallel to the axis (as shown in figure 4), creating little pulse dispersion. Telephone and cable television networks install millions of kilometers of this fiber every year. Step index m ...
SURFACE ELECTROMAGNETIC WAVES IN FINITE
... The terahertz (THz) regime is that promising slice of the electromagnetic (EM) spectrum that lies between the microwave and the optical, corresponding to frequencies of about 1012 . . . 1013 hertz. Feature of THz spectrum range is that its inherent wavelength is too long to be used in a well-develop ...
... The terahertz (THz) regime is that promising slice of the electromagnetic (EM) spectrum that lies between the microwave and the optical, corresponding to frequencies of about 1012 . . . 1013 hertz. Feature of THz spectrum range is that its inherent wavelength is too long to be used in a well-develop ...
High-power passively mode-locked semiconductor lasers
... bow-tie amplifier geometries [4]. Such techniques increase the complexity of the system and are still currently limited to average powers well below 1 W. In recent years, it has been discovered that semiconductor lasers with surface-emitting geometries allow for much larger mode areas, particularly ...
... bow-tie amplifier geometries [4]. Such techniques increase the complexity of the system and are still currently limited to average powers well below 1 W. In recent years, it has been discovered that semiconductor lasers with surface-emitting geometries allow for much larger mode areas, particularly ...
