Harmonic distortion in the photographic images of sinusoidal objects can be reduced to a negligible amount by the formation of positive images provided certain conditions of exposure and development are met. Experimental results for objects of low spatial frequency are found to agree well with the ...
The 1 kHz sinusoidal low-frequency bias voltage across the cell controls the pretilt angle of liquid crystal molecules in the x-z plane. An input glass interface, parallel to x, prevents the occurrence of undesired depolarization effects. Figure 1 (a) Schematic diagram to reconstruct noisy ...
The magnetization that contributes to these images is nonuniformly distributed within each pixel, forming two sinusoidal waves in quadrature, with an oscillation period of exactly two pixels. Since only half of each pixel contributes significant signal, the two images can be interleaved to create a ...
This all-optical optimized setup comprises an electro-optic crystal acting as a fast sinusoidal optical transmission gate, and allows four quadrature image channels to be recorded simultaneously with any conventional camera. We report the design, experimental validation and examples of applications of ...
it is very important to confirm the model's applicability to images whose temporal change characteristics differ from flickering images. This paper discusses the model's applicability to drifting sinusoidal waves, which have a typical kind of temporal change characteristic except for flickering images. ...
bothtypesofcontrastresultfrominterferenceofwavessobotharephase-contrastimagesalthoughweusuallythinkofthemastwo-beam,diffraction-contrastimages.Phase-contrastimagingisoftenthoughttobesynonymouswithhigh-resolutionTEM.Infact,phasecontrastappearsinmostTEMimagesevenatrelativelylowmagnifications.Wewilldrawyourattentiontoitsrole...
A new algorithm for ship wake detection is developed with the aim of ship heading and velocity estimation. It exploits the Radon transform and utilizes merit indexes in the intensity domain to validate the detected linear features as real components of t
The decomposition of an arbitrary optical field into plane waves is conducted using the 2D Fourier transform, as follows: A( fx, fy; z) = ∞ U(x, y, z)e−j2π(x fx+y fy)dxdy, −∞ (1) where A(fx, fy; z) denotes the complex-valued amplitude of the 2D sinusoidal plane ...
f . intermediate frequencies the intensity of the beam B is Consider now the action of the intensity control unit of normal value when the speed of deñection of the spot when a relatively low frequency sinusoidal wave is ap-_ is zero and is increased when the speed of detlectionìis ...
1, is utilized to amplitude sample the two sinusoidal waves in samplers 15, 16, the samples then being stretched in 17, 18 and supplied to the beam deflecting members whilst the coincidence pulse after delay in 22 and stretching in 23 is utilized as the " brightup " pulse. Instead of ...