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Recent microscopy techniques use nanoparticles as contrast agents that assist in realizing super resolved imaging of the inspected sample. While the sample itself is not labelled, its optical properties and form are revealed from the agent's location and movement. Gold nanoparticles are frequently used for compound cellular imaging due to their plasmonic resonance that occurs in the visible regime...
Incoherent digital holography (IDH) offers the ability to record a complete three-dimensional scene without using lasers. In this review paper, the evolution of a well-established method of IDH, the Fresnel incoherent correlation holography (FINCH), is described. Following the FINCH development review, several recently developed methods branched out from FINCH are discussed.
The shadow optical method of caustics which is also known as the shadow spot method is a relatively new experimental technique to determine stress intensity factors in crack problems under static and dynamic loading. The evaluation of caustics needs automatic measurement of the characteristic dimensions. This needs the detection of edges and smoothing of the curve or curve fitting before counting...
This paper proposes an automated water body detection method to delineate detailed water bodies from high-resolution satellite images. It consists of three steps: a) coarse water mask detection from optical imagery using unsupervised classification; b) water mask refinement using backscatter value from synthetic aperture radar (SAR) images; and c) advanced morphological filtering to produce a final...
In this paper, we proposed a new strategy for urban land cover classification by fusing high spatial resolution optical images and polarimetric SAR images. The novelty of strategy was in twofold: introduce an object-based classification method to alleviate the negative impact of inner class variability of high spatial resolution images in urban areas and geometric differences between the SAR and optical...
We experimentally study spot size reduction by using radially polarized beam for subsurface silicon integrated circuit microscopy. Metallic lines fabricated on a silicon substrate with linewidth / spacing ∼ 130nm / 70nm were resolved through the substrate at λ0 = 1310nm.
Optical characterization of biological tissues provides advantages like the non-invasive or non-contact characters, or an increased image resolution. The use of the polarization information, apart from the intensity, leads to new data for a better diagnosis. In this work, we use the Group Theory applied to polarimetry to analyse the polarization behaviour of samples. The SU(4)-O+(6) homomorphism allows...
Optical Coherence Tomography (OCT) is a well known technique for creating non-invasive, high resolution images of biological microstructure. OCT has matured into animportant imaging modality since its invention in 1991. The popularity of the method lies in the numerous advantages that it offers high detection sensitivity allowing fast imaging speed, andhigh spatial resolution. In this paper we propose...
A new idea of the optical fiber coherence tomography system designed for medical application is presented in this paper. Application as a source the femtosecond 400 mW Ti:Al2O3 pulse laser operates at wavelength 798 nm with spectral pulse bandwidth about 145 nm provides the longitudinal resolution about 2 mum. The system can be used for scanning the interior of a human body owing to application of...
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