Mycoplasma synoviae (MS) infection in poultry is a serious global epidemiological and economic problem. Usually, MS pathogen is responsible for respiratory disease, infectious synovitis and the eggshell apex abnormalities (EAA). The EAA may lead to an increase in the incidence of cracks and breaks of eggshells which often are reason of microbial infections and higher water vapor loss during the entire incubation process. All these problems can cause higher embryonic mortality and lead to significant economic losses. Most of eggs with EEA posses characteristic deformation of an eggshell, however, a number of those eggs infected by MS may be omitted during visual inspection. To prevent such situation a combined Full-Field OCT (FF OCT) and spectral technique for detection of MS infected pieces is proposed. After a numerical processing from a recorded transmittance spectra of a eggshell a few parameters are calculated. Those parameters describe the shape of the transmittance spectrum understood for example as the directional coefficient of a line matched to a graph, or maximum amplitudes of changes in a specified range of wavelengths. Analyses of those parameters allow shells assignment into one of two groups – eggs coming from healthy and MS infected poultry. Data obtained from FF OCT allow more precise evaluation of MS influence on the eggshell, for example changes in the micropores, which are responsible for proper embryo – environment gas exchange [1]. Authors present a new approach to food quality testing which in near future may be applied to reduce the egg production losses caused by MS in the commercial poultry industry.
In this paper a concept of a Internet Virtual Studio as a modern system for production of news, entertainment,
educational and training material is proposed. This system is based on virtual studio technology and integrated with
multimedia data base. Its was developed for web television content production. In successive subentries the general
system architecture, as well as the architecture of modules one by one is discussed. The authors describe each module by
presentation of a brief information about work principles and technical limitations. The presentation of modules is
strictly connected with a presentation of their capabilities. Results produced by each of them are shown in the form of
exemplary images. Finally, exemplary short production is presented and discussed.
Methods of real-time reconstruction of digitally recorded off-line microinterferograms working in Fresnel and Fourier configuration are presented. The principle of numerical calculations is described. Exemplary reconstructions of some holographic images, especially for digital holographic interferometry, are shown.
In digital holography the imaging process consists of two quite different techniques: physical registration using CCD camera and digital image reconstruction with specialized software. To receive the best image quality, besides diffraction limitations, the recording reference and reconstruction beams should be identical. The measurement of the reference field distribution at the hologram plane can be accomplished with a limited precision. The influence of differences between the reconstruction and recording reference beams is the subject of the paper. The analytical and experimental results are presented. It worth to emphasize that the differences mentioned influence results obtained in digital holographic interferometry as well.
In the paper a new approach to quasi real-time phase reconstruction of digitally recorded holograms is presented. A new, low cost and fast measurement system based on digital holographic interferometry is described. Examples of experimental results representing deformations of an object under thermal load are shown.
Problems of the quality improvement of holographic images and the reconstruction time reduction are discussed. The convolution and Fresnel approaches are presented. For both methods the algorithm improvement is proposed. Basing on the special transmittance function calculating the computation time is significantly decreased. For the Fresnel approximation the autocorrelation factor from the reconstructed image is removed. The presented ideas are illustrated by exemplary images for each step of computation. Advantages and disadvantages of the methods are discussed.
The progress in high resolution CCD detector technology provides the electronic medium for digital registration of holograms. This possibility is widely used in digital holography, which allows reconstruction of numerically stored microinterferogram. This approach is very useful for optical metrology application, however it is not convenient to real time visualization of 3D object reconstruction. In the paper we propose to use only the stage of digital registration and then transfer these data to LCD matrix to form an optoelectronic version of microinterferogram. This hologram is reconstructed optically by a laser beam, giving possibility to visualize an amplitude-phase object's image. These procedures together with fast LCD and proper optical imaging system should enable to produce digital holographic films.
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