In the microwave band, the radiated wave from the pyramidal horn antenna is calculated in the diffracted field by
the Fresnel approximation. In addition, the Fresnel approximation has been introduced into the diffracted field
with half infinite diffraction plane. This phenomenon is examined compared with the experiment value based on
a hologram interpretation. In this report, the electromagnetic diffracted field with the pyramid horn antenna is
calculated as the first stage under the Fresnel approximation. As a result, the hologram was made by interfering
with the reference wave whose obtained diffracted field and angle of incidence are 60° on the computer. It can
be interpreted that this is one computer generated hologram. Moreover, the image that this hologram pattern
is reconstructed in optics with the He-Ne laser was obtained.
Transmission of hologram is very important to realizing the holographic 3D TV. Transmission of
Computer Generated Hologram(CGH) data using SSTV wire-less method was tried before and
one frame with 76.8k bit data transmitted by 2kbbs was reported1-2). In this research we
consider about more high speed transmission and more high resolution hologram data
transmission and reconstruction using white LED.
Using a two-dimensional fast Fourier transform is an efficient way to calculate a kinoform. High-speed processing of large amounts of data points (e.g., a 512×512 matrix) can be accomplished using a kinoform. Real-time computer-generated hologram calculation has been widely pursued. To this end, use of the graphics processing unit (GPU) or multiprocessing methods are becoming popular for high-speed processing. We used the GPU method coupled with multiprocessing to construct a kinoform and measured the efficiency of this method.
KEYWORDS: 3D image processing, 3D displays, Holography, Holograms, 3D image reconstruction, Particles, Scattering, Digital micromirror devices, Image processing, Volume holography
As a technique for displaying holographic three-dimensional (3D) images in the wide region with a wide viewing angle, spatial projecting technique onto the mist screen is well-known. For such purposes, other various techniques have been studied, however, it has been difficult to take a side view of 3D images. In order to overcome this problem, we have been challenged to improve a holographic 3D displaying system employing a mist screen. In this paper, we shall report a new display system which has an improved jetting mechanism compensating the characteristics of the mist screen and gives volumeful 3D images by combining the reconstructed waves from two ways. It is also shown that by the use of this system, we can better observe 3D images in the wider viewing region than before. From this, we confirmed the possibility of a holographic projecting process adopted mist screen displaying volumeful 3D holographic images.
In the microwave band, the radiated wave from the pyramidal horn antenna is calculated in the diffracted field
by the Fresnel approximation. In addition, the Fresnel approximation has been introduced into the diffracted
field with half infinite diffraction plane. This phenomenon is examined compared with the experiment value
based on a hologram interpretation.
In this report, the electromagnetic diffracted field with the pyramid horn antenna is calculated as the first
stage under the Fresnel approximation. As a result, the hologram was made by interfering with the reference
wave whose obtained diffracted field and angle of incidence are 60° on the computer. It can be interpreted that
this is one computer generated hologram. Moreover, the image that this hologram pattern is reconstructed in
optics with the He-Ne laser was obtained.
Computer holographic stereogram (CHS) is useful for holographic 3D TV because it is constructed from
the multi horizontal viewpoint plane images and is compatible to the multi camera stereoscopic image.
Each hologram is recorded as a slit hologram (element hologram) but total viewing area and the number
of the element holograms have been limited to some extent by the size and the resolution points of LCD.
Therefore we used two LCDs for making CHS and deposited them horizontally and increased the viewing
points to two times and extend the display area to satisfy the binocular parallax. We considered how
viewing area becomes extended. We consider how we could improve the characteriostics of the images of
CHS. We got moving images with this system using web-camera and also we considered the real time
calculation about the hologram 3D-TV.
Transmission of hologram is very important to realizing the holographic 3D TV. Transmission of
Computer Generated Hologram(CGH) data using SSTV wire-less method is tried before and one
frame with 76.8k bit data is transmitted by 2kbbs is reported1). In this research we consider to
more high speed transmission and more high resolution hologram data transmission using white
LED.
We analyze the electromagnetic wave scattering problem from multilayer-coated Fourier grating for a general
angle of incidence and arbitrary polarization. This analysis is treated in quasi-two-dimensional problem with
the scalar wave function where the incident wave vector is not perpendicular to the ruling direction of the
gratings. The analytically procedure is applied to T-matrix method with R-matrix propagation algorithm. This
formulation can be calculated in the closed-form expressions because R-matrix propagation algorithm is used
avoiding a singularity in matrix elements for the evanescent mode. Numerical examples are also presented for
diffraction efficiencies versus incident and azimuth angle.
In this paper, a transmitting process of a sequence of holograms describing 3D moving objects over the communicating
wireless-network system is presented. A sequence of holograms involves holograms is transformed into a bit stream data,
and then it is transmitted over the wireless LAN and Bluetooth. It is shown that applying this technique, holographic
data of 3D moving object is transmitted in high quality and a relatively good reconstruction of holographic images is
performed.
KEYWORDS: 3D image reconstruction, 3D displays, Particles, Control systems, Distortion, 3D image processing, Light scattering, Holograms, Displays, Holography
We have been developing the projection type display system[1]. In the case of projection type display, it needs
to use the screen in order to project the image clearly. We could get the wide viewing area using the mist
screen[2-4]. However, the image with mist screen was flickered by gravity and air flow. Then we considered
to reduce the flicker of the image and we found that flicker can be reduced and viewing angle became more
large.
This time we report the large viewing angle projection type display system using screen made up with very
small particle size smoke and flow controlled nozzle. Hence, at first we considered the most suitable particle
for the screen and then the shape of screen and then we constructed the array of flow controlled smoke screen.
By the results of experiment we could get considerably high contrast flicker-less image and get the viewing
angle more than 60° by this flow controlled nozzle attached new type smoke screen and moreover we can get
the walk through type display with this method and make clear the efficiency of this method.
This paper describes a new closed form of the matrix elements by using T-matrix method.
This formulation is useful expression because T-matrix element is presented in the analytical
form of the Bessel function series. The energy convergence does supply a numerical consistency
check at less than 1[%] in percentage power error. Numerical examples are illustrated for
diffraction efficiencies which the incident angle and profile for holographic Fourier gratings
are variable. If the profile of a grating is chosen appropriately, the diffraction efficiency can
be checked by becoming more than 80[%] at TE and TM polarization.
KEYWORDS: 3D image reconstruction, Particles, Control systems, 3D displays, Distortion, 3D image processing, Displays, Light scattering, Holograms, Holography
In the case of projection type display[1], it needs to use the screen in order to project the image clearly
and wide viewing angle. We have been developing the projection type display system using the mist
screen[2-4]. However, the image with mist screen was flickered by gravity and air flow. Then we considered
to reduce the flicker of the image and we found that flicker can be reduced and viewing angle became more
large.
This time we report the large viewing angle projection type display system using screen made up with very
small particle size smoke and flow controlled nozzle. Hence, at first we considered the most suitable particle
for the screen and then the shape of screen and then we constructed the array of flow controlled smoke screen.
By the results of experiment we could get considerably high contrast flicker-less image and get the viewing
angle more than 60° by this flow controlled nozzle attached new type smoke screen and moreover we can get
the step-in type display with this method and make clear the efficiency of this method.
KEYWORDS: 3D displays, 3D image reconstruction, 3D image processing, Particles, Control systems, Distortion, Holography, LCDs, Displays, Light scattering
Recently, many type of 3-D displays are now being developed. We want to see 3-D moving image with
comfortably and more expanded depth, Holography is different from the other 3-D display because
natural stereoscopic image can be obtained. We have once developed a electro-holographic display using
virtual image. But the viewing area is so small because the pixcel size of LCD is not so small.
This time we developed the projection type electro-holographic display system. In the case of
projection type holography [1], it needs to use the 3-D screen in order to project the reconstructed image
clearly and viewing angle becomes wide. We developed the electro-holographic display system using mist
3-D screen. However, a reconstructed image with mist 3-D screen was flickered by gravity and flow of air.
Then we considered to reduce the flicker of the image and we found that flicker could be reduced using
flow controlled nozzle.
Hence, at first we considered the most suitable shape of 3-D screen and then we constructed the array
of flow controlled mist 3D screen. By the results of experiment we could get considerably high contrast
3-D moving image and get the viewing area more than 30°by this flow controlled nozzle attached new
type mist 3-D screen and make clear the efficiency of this method.
KEYWORDS: Holograms, LCDs, 3D image reconstruction, Holography, Stereo holograms, 3D image processing, 3D displays, Optical components, Data conversion, Eye
Computer holographic stereogram (CHS) is useful for holographic 3D TV because it is constructed from
the multi horizontal viewpoint plane images and is compatible to the multi-view point images. Each
hologram is recorded as a slit hologram (element hologram) but total viewing area and the number of the
element holograms have been limited to some extent by the size and the resolution points of LCD.
Therefore we used two LCDs for making CHS and deposited them horizontally and increased the viewing
points to two times and extend the display area to satisfy the binocular parallax. We considered how
viewing area becomes extended. We consider how we could improve the characteriostics of the images of
CHS. From now we consider the condition such as transmission and real time calculation about the
3D-TV
An infrared transmitting technique for 3D holographic images is studied. It seems to be very effective as a transmitting
technique for 3D holographic images in the places where electric wave is prohibited to be used for transmission. In this
paper, we first explain our infrared transmitting system for holograms and a display system for the presentation of
holographic 3D images reconstructed from the received signal. Next, we make a report on the results obtained by infrared
transmission of CGH and a comparison of the real and the reconstructed 3D images in our system. As this result, it is
found that reconstructed holographic 3D images do not suffer a large deterioration in the quality and highly contrasted
ones can be presented.
A full-color electroholographic 3-D display system employing LEDs is presented, and a virtual image reconstruction technique for it is studied. It is shown that the image blur observed in the reconstruction is suppressed to a lower level than in reconstruction employing a metal halide lamp. In addition, direct, independent drives on LEDs through RGB waves make the adjustment of white balance easier, and a wide viewing angle can be attained. Full-color, high-contrast 3-D images are obtained.
Computer holographic stereogram (CHS) is useful for holographic 3D TV because it is constructed from
the multi horizontal viewpoint plane images and is compatible to the multi camera stereoscopic image.
Each hologram is recorded as a slit hologram (element hologram) but total viewing area and the number
of the element holograms have been limited to some extent by the size and the resolution points of LCD.
Therefore we used two LCDs for CHS and arranged them horizontally and increased the viewing points
to two times and considered how viewing area and reconstructed images of CHS were improved.
A transmitting process of a sequence of holograms describing 3-D moving objects over a communicating network system is presented. A sequence of holograms involves holographic information of 3-D moving objects recorded as fringe patterns. In this process, holographic information recorded in the holograms is transformed into bit stream data, and then is transmitted over the Internet. We call this process a "network streaming technique." It is shown that by applying this network streaming technique, holographic data of 3-D moving objects are transmitted in high quality, and a relatively good reconstruction of the holographic images is performed. Moreover, it suggests that if this network streaming technique is employed together with MPEG-4, a new transmitting process for holographic information of 3-D moving objects may be rigorously developed over network systems, and will play a very important role in this field.
KEYWORDS: 3D image processing, JPEG2000, Computer generated holography, Holography, Image compression, Holograms, Image processing, Digital holography, 3D displays, Data compression
In this paper, the quality of recovered holographic images produced by CGH adopted JPEG2000 is investigated. As a result, it is observed that this process gives nice 3D reconstructed images. It appears to show that a transmission of 3D holographic images can be possible.
KEYWORDS: Particles, 3D displays, 3D image reconstruction, 3D image processing, Distortion, Control systems, Light scattering, Holography, Scattering, Digital micromirror devices
Recently, many type 3D display are now being developed. We have developed a electro-holographic display system using water particle 3D screen. However, a reconstructed image on water particle 3D screen was not clear because it was flickered by gravity and flow. By our research, flicker was reduced using flow controlled nozzle. We want to watch 3D moving image with little distortion and more expanded depth, hence, we have developed an array of water particle 3D screen.
KEYWORDS: 3D image reconstruction, 3D image processing, 3D displays, Particles, Holograms, Digital micromirror devices, Scattering, RGB color model, Light scattering, Computer generated holography
The specification of hologram image is the full parallax 3D image. In this case we can get more natural 3D image because focusing and convergence are coincident each other. We try to get practical electro-holography system because for conventional electro-holography the image viewing angle is very small. This is due to the limited display pixel size. Now we are developing new method
for large viewing angle by space projection method. White color laser is irradiated to single DMD panel (time shared CGH of RGB three colors). 3D space screen constructed by very small water
particle is used to reconstruct the 3D image with large viewing angle by scattering of water particle.
Recently many kinds of transmitting techniques have been developed, and a communicating network system with a very high transmission-rate has been constructed. Broad-band internet system may be one of the most useful communicating network systems. In this paper, a transmitting process of holographic 3D moving pictures accompanied by stereo sounds over the communicating network system is presented. It involves a transmitting technique of the hologram, in which holographic information of 3D moving pictures are recorded as fringe patterns. First, the information in the hologram is transformed into a bit stream data, and then it is transmitted over the internet system with stereo sound wave. We call it simply as "network streaming technique". It is shown that by an application of this technique, the holographic data of 3D moving pictures are transmitted in high quality, and relatively good reconstruction of holographic images are performed with nice stereo sounds. It suggests that based on "network streaming technique", a new transmitting process of holographic 3D moving pictures employed MPEG-4 and stereo sound wave can be rigorously developed, and it seems to play an important role in the transmission of 3D moving pictures accompanied by stereo sounds over the network.
KEYWORDS: Particles, 3D displays, 3D image reconstruction, Light scattering, 3D image processing, Holograms, Control systems, Mie scattering, Scattering, Transparency
Recently, image quality is improved by the research of sensation of reality that feeling of being at a live performance. We are developing electro-holographic display system using water particle 3D screen. It was cleared that water particle screen shows high contrast image with wide viewing angle and it is effective for holographic TV but it shows flickers by gravity and flow. Our research made flickers being reduced using flow controlled nozzle
Recently, because the high-speed network system known as broadband internet has become widespread, it is now possible to transmit various forms of mulitmedia data using this system. We found several research reports for the transmitting visual images in the network streaming process. However, there seemed to be few reports on transmission of holographic 3D movies. We present a transmitting process of holographic 3D movies adopting network-streaming techniques and a hologram in which 3D objects were recorded as fringe patterns. When we applied this method, we could achieve excellent transmission of holographic 3D movies. Moreover, we could reconstruct good holographic images using transmitted streaming data. From this result, it seemed possible to develop new transmitting processes of 3D moving data using well-known conventional techniques.
In order to develop a holographic HMD-type holography 3D-TV with a full parallax, it seems to be very useful to study various techniques of virtual image reconstruction sufficiently. In this paper, a new, full color electro-holographic display system equipped with LED is presented. Virtual image reconstructing technique is applied, and full color, relatively highly contrasted 3D images are obtained using this system. We consider about the condition for realization of HMD-type holography 3D-TV using this technique because this techniques is very suitable for HMD system.
KEYWORDS: 3D image reconstruction, 3D image processing, Particles, Holograms, 3D displays, Digital micromirror devices, RGB color model, Scattering, Computer generated holography, LCDs
The specification of hologram image is the full parallax 3D image. In this case we can get more
natural 3D image because focusing and convergence are coincident each other. We try to get
practical electro-holography system because for conventional electro-holography the image viewing
angle is very small. This is due to the limited display pixel size. Now we are developing new method
for large viewing angle by space projection method. White color laser is irradiated to single DMD
panel ( time shared CGH of RGB three colors ). 3D space screen constructed by very small water
particle is used to reconstruct the 3D image with large viewing angle by scattering of water particle.
A new and practical method for achieving color electro-holographic display systems was developed and tested with very promising results. In proposal method, virtual image reconstruction method and color hologram reconstruction techniques utilizing a single white light source, instead of the traditional three color laser lights, and three liquid crystal display panels (LCD) were proposed.. In this method imaging lens is not necessary and we can get wide viewing angle.
A metal halide lamp with good specifications in each wavelength of the color components was adopted as the light source. Each of the three color light components required for the reconstruction of an image was extracted by color separation using dichroic mirrors. The separated color images were then reconstructed by the hologram formed on the LCD panels which is then combined togethre through the use of a prism to form a single 3D image. As the result system become compact and realistic one.
A new and practical method for achieving Color Electro- Holographic Display systems was developed and tested with very promising results. In this method, holography techniques utilizing a single white light source, instead of the traditional three color laser lights, and three liquid crystal display panels (LCD) were proposed. A metal halide lamp with good specifications in each wavelength of the color components was adopted as the light source. Each of the three color light components required for the reconstruction of an image was extracted by color separation using dichroic mirrors. The separate color images were then reconstructed by the hologram formed on the LCD panels which is then combined together through eh use of a prism to form a single 3D image. Moreover, in proposal method, no lens are used by virtual-image-reconstruction. System size was reduced so far in 40 percent of the techniques by the proposal technique.
KEYWORDS: Holograms, Digital signal processing, Holography, Computing systems, 3D image reconstruction, 3D displays, LCDs, 3D image processing, Telecommunications, Digital holography
High-speed calculation of hologram is very important to realize the continuous real-time holographic 3D-TV. We are studying computer systems and algorithms for the high-speed calculation of hologram. We have proposed three high-speed calculation systems of Fresnel-hologram. But, they didn't come up to real-time holographic 3D-TV when the object is complex. In this paper we have proposed holographic-stereogram calculation system using the graphic-accelerator and the digital-signal-processor (DSP) system. Holographic-stereogram calculation time doesn't depend on complexity of the object. A fast-Fourier-transform of object is calculated fast using the DSP system. We make clear that the continuous real-time holographic 3D-TV will be realized in the near future.
Now we propose a new type of electro-holography such as the head mount display (HMD) type holography TV. According to the usual projection method the viewing angle is too small and long distance is necessary for observing the reconstructed image. In this paper we propose the eye-lens type holography to realize the HMD type 3D TV and discuss about the field angle, image size and observing distance. It was made clear that in this stage eye-lens type holography is effective to realize the 3D display even though the eye position is fixed.
In this paper the kinoform is mentioned as computer generated hologram. In the case of kinoform the fluctuation of the amplitude distribution causes the noise in the reconstructed image. Random phase distribution is added to input pattern to make the dynamic range of the amplitude of hologram pattern constant, but it is not sufficient and there seems to be speckle noise in the image. So in this paper deterministic phase coding method is applied to improve the characteristic of the reconstructed image. Animated kinoform using the image processing system with frame memory is constructed and it is displayed on the liquid crystal device. From the consideration of the characteristics of the reconstructed image we make clear the efficiency of the deterministic phase coding method for the electro-holography.
We have been researching holographic 3D displays using a commercially available Liquid Crystal Devices (LCD). However, specifications of the LCD were not enough to holographic display, and we could obtain only small reconstructed image with the narrow viewing zone. In our present research, we are supported by an LCD manufacturer, and planning to use the custom-made LCD which has both minute and numerous pixels. The LCD's pixel pitch is 28 micrometers (horizontal) X 56 micrometers (vertical), and pixel number is 3200 X 960. Five LCDs are horizontally arranged in our electro-holographic display. By using five LCDs, total pixel number becomes about 15 Mega. We can obtain larger image and wider viewing zone compared with our previous experimental display, and can be observed binocularly. The size of the reconstructed image is 50 mm wide, 150 mm high, and 50 mm deep. Viewing zone is 65 mm at approximately 1000 mm from the image. In this display, we discard the vertical parallax and set the 1D diffuser on the vertical image plane. We also discuss the compensation of optical aberrations. Even if a single lens with large aberration is used for the optics system of the reproduction, we can obtain the reproduction image with corrected aberration by adding the compensation phase distribution to the hologram.
To realize an interactive holographic 3D display system, the system falls into three processes: the first is the generation of original 3D object data; the second is the computation of hologram patterns; the third is the modulation of electro-holographic display devices. These must be executed fast and continuously for 3D display. In these processes, the fast computation of holograms is the most important process. We investigate this process using a fast computation algorithm with a fast computing system, and fabricated a prototype of the interactive holographic 3D display system. We discuss the fast computation algorithm using a transform from frequency domain to spatial domain compared with the traditional computation method of the Fresnel hologram, reduction of calculation time using our fast computing system.
We are researching 3D display using Liquid Crystal Devices (LCDs) as spatial light modulators to control wavefront for reconstructed 3D holographic image. We have tried to expand the image size and viewing zone, especially on vertical direction. The image size depends on the size of LCD pixel, and the viewing zone depends on the number of LCD pixels. So we use half mirror to set up three-fine pixel LCDs continuously in horizontal direction. In our display of first step, we can see 14 mm in width of image size, under +/- 1.2 degree(s) in angle of horizontal viewing zone. But in vertical direction, since the number of LCD pixels are limited, the reconstructed image size and viewing zone become small in full- parallax off-axis holography. So we discard the vertical parallax, which makes the necessity for number of LCD pixels to diffract the wavefront too large. We use cylindrical lens to expand the vertical image size and adjust the image plane, under the condition of discarding the vertical parallax. And we set lenticular sheet on the image plane to get wide vertical viewing zone.
A 2D image can be scaled simply by changing its pixel size. If we were to apply this method to a hologram, it would cause distortion in the reconstructed 3D images, and a change in the viewing angle. We propose a method for scaling the reconstructed image without changing its fringe element, i.e., pixel size. We divide the hologram into small blocks. Then, these blocks are repositioned in order to magnify or demagnify the reconstructed image. This method maintains the viewing angle and causes no distortion. It does, however, blur the reconstructed image. To reduce the blur, we propose a method of interpolation in the frequency domain. Results of experiments performed on an electro-holography system are also presented.
We have presented the experiments about the cineholography constructed with the many element holograms which were made with cw laser and holographic-TV using LD LCD and holography camera. The interference fringes with holography camera were recorded on the CCD of TV-camera. The fringe signals were transferred into electronic ones. And transformed into the LCD, the fringes were constructed on the one. At this time, with the help of LD, the panel of LCD were illuminated and so hologram was reconstructed in the LCD at real time.
KEYWORDS: 3D image reconstruction, Holograms, Holography, Image processing, 3D image processing, Ultrasonography, Stereo holograms, 3D displays, Digital image processing, Fetus
Three-dimensional image display technique is becoming very important in the field of diagnosis of human fetus by ultrasound B-mode image. We apply the technique of holographic stereogram (HS) to the ultrasound B-mode human fetus images and display a 3-D image which is the real stereoscopic image. In this case each sectional diagram of the human body is measured by the ultrasound B-mode method and the human fetus image is extracted and then a 3-D surface image is reconstructed with the digital image processing. Then the 3-D image is projected to a plane and films which are composed of the various viewpoints are taken. Next, HS is constructed using these films. Then we make clear the condition of making HS. The rainbow hologram is made using the HS as the master hologram and we consider the characteristics of the reconstructed image. Also, the special image reconstructing lamp house is developed for medical application, and we discuss the possibility of this method for the medical diagnosis.
In this paper we discuss the use of holography for recording biomedical properties. A holographic stereogram, system holography camera, and holographic television are presented for this purpose
This paper describes a holography camera for making many art treasures into holograms, cineholography, and holographic television (real-time electro holography).
In the past, the transmission of holograms via television was executed but no holographic TV was realized because there was no suitable recording material. Now a 3-D TV is expected, and recent research on real time holography using a high-resolution liquid crystal device (LCD) is active. In this research we consider the possibility of holographic television and construct the best system possible with commercially available devices. First, holographic fringe patterns for moving objects are made with TV cameras. Then the hologram pattern is transformed to electrical signals and transmitted within the TV frequency band. Finally, the hologram fringe pattern is displayed on the LCD and the 3-D image is reconstructed. In this research, we used the moving object and considered its characteristics. The filtering method was used to improve S/N of the reconstructed image and to extend the viewing angle.
The plain white light reconstructed holographic stereogram (PW-HS) is made from the element holograms using photographs of many different viewpoints. It is useful when making a hologram of an object of which a hologram can not be made directly. To see the inside of the human body visually in the 3-D image, the authors apply the technique of holographic stereogram (HS) to the ultrasound B-mode images of the human fetus and display the 3-D image directly. The authors clarify the condition of making HS, then consider the quality of the reconstructed image. This system is applied to medical diagnosis and the effectiveness of this method is made clear.
Three-dimensional image display has become so common that the public expects the realization of real-time display for three-dimensional images. The device which can construct various wavefronts is also important as a device for optical computing. The authors suggest a method to display 3-D moving images or construct wavefronts and consider an application of the technique of fiber optics to the display. The system that displays 3-D images is shown and the results of simulation are reported.
The hologram reconstructed by white light is very advantageous for us
to record the important cultural properties. There are many properties
to be recorded in Japan. A tea cup for teacereinony in ancient time is
shown in Fig.1. This kind is easily recorded in Lippman hologram.
Especially,color Lippman holography is very useful to do so. A 'ooderi
statue of Buddha in Fig.2 isn't removed for the purpose of recording.
The holographic streogram (H.S.) and the reflected ho1ographic stereograni
(R.H.S.) are useful. H.S.& R.H.S.are very interesting because of this
ability to render a wide range of input formats,such as photographic,
C.G.,movie and video images. Our experiments are constructed with Lippman
hologram and R.H.S.(flat type). To repair these important cultural.
properties will come to be remarkably advanced by making use of our
method. So in this paper, it is considerd about the distortion which
appears in the images with rotation method of the experiments. FinaiJy it
will be tried to reconstruct distortionless 3D images by R.H.S. with this
way.
The plane type white light reconstructed holographic stereograi ( PWHS ) is made from the element holograms using the photograph of many different viewpoints. It is useful when we take hologram of object which can not taken hologram directly. On the other hand we want to see the inside of human body visually in the 3-D image. For these reasons we apply the technique of holographics tereogram( US ) to the ultrasound B-mode images and display 3-D image directly. Moreover we consider the distortion of the reconstructed image and consider (4)-('l') the method of distortion correction. Finally we want to apply this system to the medical fetus diagonosis.
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