Digital holography and digital image processing principles. Digital image processing allows a much wider range of algorithms to be applied to the input data and can avoid problems such as the buildup of noise and. A simple experimental method of eliminating zeroorder diffraction in the reconstructed image of offaxis digital holography is presented. Such digital sampling principle and the subsequent matrixbased numerical. All the necessary operations for image processing can then be carried out by the com puter. Digital image processing california institute of technology. In lenticular printing only few tents images can be used for 3d perception creation in digital holography are used few hundreds or even few thousands parallaxrelated images. Digital holography refers to the acquisition and processing of holograms with a digital sensor array, typically a ccd camera or a similar device. Digital data storage in a phaseencoded holographic memory system. Background as noted in the preceding paragraph, spatial domain techniques operate directly on the pixels of an image. One of the disadvantages of inline holography is the twin image appearing around the object having. Dufaux, digital holographic data representation and compression, academic press to be published.
Completely selfcontained, heavily illustrated, and mathematically accessible, it has a scope of application that is not limited to the solution of. I have to write a matlab code for my project which detects and measures the. Depthfromfocus is an image processing technique which is used to determine the depth of a scene or a region within a scene through processing images taken at different focal depths. Image processing hologram analogto digital conversion output image computer digital holography. Digital holography offers a means of measuring optical phase data and typically delivers threedimensional surface or optical thickness images. Principles and techniques of digital holographic microscopy. A fundamental problem in optical and digital holography is the presence of speckle noise in the reconstruction process. The method simultaneously provides an amplitudecontrast image and a quantitative phasecontrast image. Digital holograms can be numerically reconstructed at an arbitrary depth. Holographic printers like the one introduced by zebratechniques. The major revision in this chapter was the addition of a section dealing with image reconstruction from projections, with a focus on computed tomography ct.
Small particle imaging with digital holography 48 digital hologram particle image digital holography can image particles without lenses, using a single digital sensor, e. This research deals study of all parameters effects on reconstruct holography image using. Study of parameters effect on holography digital image. Yaroslavsky, reconstruction of a hologram with a computer, soviet physicstechnical physics, v. From a single hologram recording, images are focused afterthefact. Typically a twin images andor higher diffraction orders must be suppressed. The book is also useful for scientists and engineers, and for those who simply want to learn about optical image processing and digital holography. As noted in the preceding paragraph, spatial domain techniques operate directly on the pixels of an image.
They share origin, theoretical base, methods and algorithms. Digital holography and 3d imaging dh topical meeting. Mar 18, 2005 a fundamental problem in optical and digital holography is the presence of speckle noise in the reconstruction process. Digital image processing is the use of computer algorithms to perform image processing on digital images. Digital holography using a laser pointer and consumer. Optimized image reconstruction in digital holography nail sabitov, thomas meinecke, stefan sinzinger. Resolution is not the only factor in the quality of the hologram. Osa digital holography and threedimensional imaging 2016.
Jose pedreros, cristian pavez, mario castro, gonzalo. Burge digital image processing an algorithmic introduction using java with 271. Digital holography and digital image processing are twins born by computer era. Digital image processing and digital holography in optical diagnostics of plasmas.
Digital holography is about the acquisition of holographic image data using a digital sensor, and the subsequent processing to reconstruct individual images. Coverage of ct starts with an intuitive example of the underlying principles of image reconstruction from projections and the. In section 3 we present a host of applications of dihm in micro. A hologram is a photographic recording of a light field, rather than an image. Whereas most books solely address the theory behind these 3d imaging techniques, this monograph concentrates on the exact code needed to perform complex mathematical and physical. Standard 2d image processing techniques can be applied to individual digital holographic reconstructions with varying success. The technique uses a ccd camera for recording of a digital fresnel offaxis hologram and a numerical method for hologram reconstruction. In the paper, they have presented a new application of digital holography for phasecontrast imaging. Digital holography comes in different flavors, such as offaxis fresnel, fourier, image plane, inline, gabor and phaseshifting digital holography, depending on the optical setup. Indeed, digital holography by numerical diffraction of optical fields allows imaging. Principle of digital holographic microscopy digital holography is based on the classic holographic principle, with the difference that the hologram recording is performed by a digital image sensor, e. Digital hologram working principle is quite similar to lenticular prints.
Digital image processing textbook free download digital image processing textbook free download dip. This involves subdividing an image into constituent parts, or isolating certainaspectsofanimage. Holographic diffraction grating acting as a beam splitter. Digital holography and 3d imaging dh 21 25 april 20 21 april 20 the fairmont orchid, kohala coast, hawaii united states the digital holography and threedimensional imaging dh topical meeting provides a forum for science, technology, and applications of digital holographic and threedimensional imaging and display methods. Digital image fundamentals 35 those who wish to succeed must ask the right preliminary questions. Yaroslavsky, digital holography and digital image processing. However, as a result of advanced computer and photonic devices, digital holography dh 6,7 can record a hologram of a real 3d object on a twodimensional 2d plane and reconstruct its image. Many approaches have been carried out in order to overcome such a problem ranging from modifying the spatial coherence of the illumination optical techniques to image processing techniques digital techniques. Digital image processing and digital holography in optical. However, as a result of advanced computer and photonic devices, digital holography dh 6,7 can record a hologram of a real 3d object on a twodimensional 2d plane and reconstruct its image digitally, which has given a promising 3d technique in the last decade. The spatial domain processes discussed in this chapter are denoted by the expression where is the input image, is the output processed image, and. The resolution of the mjpeg image is 16 micronspixel.
Principles, methods, algorithms pdf,, download ebookee alternative reliable tips for a better ebook reading experience. Holography is an advanced form of photography that allows an image to be recorded in three dimensions. Selfservice digital image printing and enhancement. The spatial domain processes discussed in this chapter are denoted by the expression. Aiming at the question that the existence of zeroorder image has certain effect on the quality of reconstructed images in digital holography, by analysis of spectrum characteristic as well as record and represent theory, two digital image processing algorithm differential substitution and the fir filter are proposed for zeroorder image elimination in digital holography. The paper concludes with a summary and a look to the future. Tv holography and image processing in practical use. Hi, im working on a project which is about digital inline holographic microscopy. Digital image processing extracts the object surface and the. Pdf color reconstructions of real digital holograms in holographic display with white light led illumination tomasz kozacki, maksymilian chlipala, weronika zaperty, and piotr makowski. Recent results using such image processing algorithms for deformation and vibration measurements are described. One important use is in threedimensional microscopy. Indeed, digital holography by numerical diffraction of optical fields allows imaging and image processing techniques that are difficult or not feasible in realspace holography.
Visible light is part of the electromagnetic spectrum. A p p l i e d optics g r o u p d e p a r t ment o f p h y s i c s introduction 7 semester 1. Imaging 1997 klu02 apply small fractions of thebefore taking a close lo photometric emulsion with a computergenerated image. The choice of a dark spot on a light material makes the manual determination of the focus point easier. In fact, holography was first invented for microscopy, and making the recording digital has the benefit of enormous processing power. Recent advances in digital holography invited wolfgang osten, 1, ahmad faridian, 1 peng gao, 1 klaus korner, 1 dinesh naik, 1 giancarlo pedrini, 1 alok kumar singh, 1 mitsuo takeda, 1,2 and. This research deals study of all parameters effects on reconstruct holography image using holovision software. Digital and analog hologram tomography for medical applications. This aims at the generation of conventional holograms with digital content rather than real scenery. Feb 23, 2011 standard 2d image processing techniques can be applied to individual digital holographic reconstructions with varying success. Reduction of speckle noise in digital holography by using. Holography is the only truly threedimensional imaging method available, and matlab has become the programming language of choice for engineering and physics students. A hologram is a physical recording of an interference pattern which uses diffraction to.
Digital holography and digital image processing springerlink. Apr 25, 20 digital holography and 3d imaging dh 21 25 april 20 21 april 20 the fairmont orchid, kohala coast, hawaii united states the digital holography and threedimensional imaging dh topical meeting provides a forum for science, technology, and applications of digital holographic and threedimensional imaging and display methods. The compression routine used to store an image in memory will reduce quality, and the filter used to create a color image. In lenticular printing only few tents images can be used for 3d perception creation in digital holography are used. The difference is in quantity of the parallaxrelated images used for those 3d prints.
The present book describes these common fundamentals principles, methods and algorithms including image and hologram digitization, data compression, digital transforms and efficient computational algorithms, statistical and montecarlo methods, image. Incoherent digital holograms acquired by interferenceless. The leader in the field for more than twenty years, this introduction to basic concepts and methodologies for digital image processing continues its cuttingedge focus on contemporary developments in all mainstream areas of image processing. Digital holography offers a number of significant advantages, such as the ability to acquire holograms rapidly, availability of complete amplitude and phase information of the optical field, and versatility of the interferometric and image processing techniques. Image rendering, or reconstruction of object data is performed numerically from digitized interferograms. Osa digital holography and threedimensional imaging 2015.
Digital image processing using matlab 30 histograms given a grayscale image, its histogram consists of the histogram of its gray levels. Applications of digital image processing xxxviii, san diego, ca, august 2015 to be published y. Digital image processing techniques were developed in 1960s bell laboratories. Digital holography for quantitative phasecontrast imaging. The difference between holography and photography is best understood by considering what a black and white photograph actually is. Optimized image reconstruction in digital holography. Image processing has been used to analyze tvholographic fringe patterns of deformation and vibrations. The present book describes these common fundamentals princi.
19 1373 1062 712 1362 1098 1400 989 1249 42 1396 869 1252 216 659 548 795 679 996 1187 2 1432 561 1273 374 1471 1363 1540 1063 429 1144 1050 726 88 449 720 19 727 1061 190 747 1094 164 55