WO2020008094A1 - Procédé pour la prise d'images et films stéréoscopiques à double visionnage - Google Patents

Procédé pour la prise d'images et films stéréoscopiques à double visionnage Download PDF

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Publication number
WO2020008094A1
WO2020008094A1 PCT/ES2019/070466 ES2019070466W WO2020008094A1 WO 2020008094 A1 WO2020008094 A1 WO 2020008094A1 ES 2019070466 W ES2019070466 W ES 2019070466W WO 2020008094 A1 WO2020008094 A1 WO 2020008094A1
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WIPO (PCT)
Prior art keywords
images
stereoscopic
radiographs
monitor
eye
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Ceased
Application number
PCT/ES2019/070466
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English (en)
Spanish (es)
Inventor
Cristobal Ayala Guerrero
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Individual
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Publication of WO2020008094A1 publication Critical patent/WO2020008094A1/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/261—Image signal generators with monoscopic-to-stereoscopic image conversion
    • H04N13/264—Image signal generators with monoscopic-to-stereoscopic image conversion using the relative movement of objects in two video frames or fields
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/022—Stereoscopic imaging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/106—Processing image signals
    • H04N13/139—Format conversion, e.g. of frame-rate or size
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/261—Image signal generators with monoscopic-to-stereoscopic image conversion
    • H04N13/266—Image signal generators with monoscopic-to-stereoscopic image conversion by scanning a film

Definitions

  • the object of the present invention is also a process for the generation of stereoscopic films that also offer the possibility of double viewing.
  • the present invention characterizes the fact of achieving a stereoscopic image or film that offers a double view, one from the front and the other viewed or seen from the back, obtaining three-dimensional images that provide a unique and very valuable information reducing the number of images that would be necessary with traditional stereoscopic images. Therefore, the present invention is circumscribed within the scope of stereoscopic images.
  • Stereoscopy, stereographic image, or 3D (three-dimensional) image is any technique capable of collecting three-dimensional visual information and / or creating the illusion of depth in an image.
  • the illusion of depth in a photograph, film, or other two-dimensional image is created by presenting a slightly different image for each eye, as in our usual way of seeing. It was invented by Sir Charles Wheatstone about 1840.
  • Traditional stereoscopic photography consists of creating a 3D illusion from of a pair of 2D images.
  • the simplest way to create depth perception in the brain is to provide the viewer's eyes with two different images, which represent two perspectives of the same object, with a small deviation similar to the perspectives that the eyes naturally receive in the vision. binocular.
  • the two eyes being located in different positions, each pick up in their retinas a slightly different image of the reality in front of them.
  • These small differences are processed in the brain to calculate the distance at which objects are found using the parallax technique.
  • the calculation of distances places the objects we are seeing in three-dimensional space, obtaining a sense of depth or volume. So if we take or create two images with a slightly different angle and show them to each eye separately, the brain can reconstruct the distance and therefore the sensation of tddimensionality.
  • the object of the invention is to be able to obtain a double-viewing stereoscopic image from two images, which can be seen stereoscopically from the front and back, or also the generation of a stereoscopic film from a set of images.
  • stereoscopic where said film allows a double visualization, on the front and back that is, with a certain number of stereoscopic images we obtain twice as much information, developing for such purposes a procedure such as the one described below and is collected in its essentiality in the first claim.
  • the object of the present invention is a method for producing a double-view stereoscopic image comprising the steps of:
  • a monitor which may be:
  • a stereoscopic monitor comprising two monitors, for the first time the two images are arranged on said monitors by one of their faces and then both images are arranged on said monitors by the other of the faces that is rotated 180 ° with respect to their vertical axis getting double viewing.
  • the stereoscopic monitor is provided by a set of vertical and horizontal guides as a plotter that will allow the monitor placed at the top to move from left to right and from front to back or vice versa, keeping the monitor at the rear fixed.
  • a conventional monitor or any white projection screen by means of a projector having previously converted the images to anaglyph
  • said conventional monitor can be a color screen, a Tablet, a mobile or any device capable of reproducing color images, without the need for that are stereographic screens, being aware of the reduction in quality, color and density of information obtained.
  • the depth effect can be observed, always with the quality limitations of the anaglyph technique.
  • Two three-dimensional images are obtained with the only two radiographs taken, because the radiographic image obtained when the object to be radiographed is illuminated with a light source capable of passing through opaque elements, such as the source of light emitted by X-rays, that determines two directions in which the same image can be observed, that is, front-back and back-forward, so when viewing the images conveniently, the two three-dimensional radiographs, viewed from different perspectives, are perfectly observed, which is very useful at the time of locating and being able to determine the exact position of the problem to study.
  • a light source capable of passing through opaque elements, such as the source of light emitted by X-rays
  • the ideal distance between the shots of the radiographic images corresponding to the right and left eye is between 3 and 6 cm.
  • the two radiographic images obtained will correspond to what should be visualized by the right eye and the other will be the image that should be visualized by the left eye.
  • Rotation of the x-ray tube and sensor assembly clockwise or anti-clockwise consists in placing the object to be studied on the stretcher in the same position as to perform a conventional radiography.
  • the first radiography is carried out and then without the object to be studied moving, the X-ray - Sensor assembly is rotated in a circular direction, that is, in a clockwise or anti-clockwise direction. time taking as axis of rotation to the object to study itself and performing the second projection at an angle of rotation comprised between 1 and 12 ° depending on the desired depth in the stereoscopic image observed.
  • the two radiographic images obtained will correspond to what should be visualized by the right eye and the other will be the image that should be visualized by the left eye.
  • the area to be radiated is established and the first radiography is carried out, then without the object to be studied moving, the platform or tooling is rotated in a circular direction, that is, in a clockwise or anti-clockwise direction while maintaining assembly fixed emitter tube and X - ray sensor performing the second projection at an angle of rotation comprised between 1 and 12 ° depending on the desired depth in the stereoscopic image observed.
  • the two radiographic images obtained will correspond to what should be visualized by the right eye and the other will be the image that should be visualized by the left eye.
  • the embodiment consists in the rotation of the x-ray tube assembly, either clockwise or anti-clockwise, a successive series of x-rays are performed by rotating the X-ray tube assembly in the same always felt until we get the number of x-rays we want to make the movie.
  • Figure 1 we can see two images, a first that corresponds to what the left eye should see, and a second one that corresponds to what the right eye should see.
  • Figure 2 shows a monitor attached to a plotter addressed by a pair of guides.
  • Figure 3 shows a series of radiographs displacing the stretcher that incorporates the radiographic table a series of cm in cm.
  • Figure 4 shows the stereoscopic monitor used in the invention.
  • Figure 5 shows a possible realization of outdated radiographs 5 o , and as it is only necessary to make the radiographs of 0 or to (175 °) because the 180 ° is already that of 0 or turned 180 ° and the rest are the result of rotating the previous 180 ° with respect to each of its vertical axis.
  • Figure 6 shows an object on which a series of stereographic radiographs have been made and the images obtained by rotating the first radiographs made 180 °. PREFERRED EMBODIMENT OF THE INVENTION.
  • Figure 1 we can see two images, a first image (1) that corresponds to what the left eye should see, and another second image (2) that corresponds to what the right eye should see.
  • the ideal distance between the shots of the radiographic images corresponding to the right and left eye is between 3 to 6 cm.
  • the platform is rotated between three and 7th to perform the best shots corresponding to the radiographic images right and left eye.
  • Figure 2 shows a monitor attached to a plotter formed by vertical guides (3) and horizontal guides (4) so that it will allow you to move to the monitor from front to back and from left to right, or vice versa__ being applicable so preferred to the upper monitor, with the possibility of being able to be coupled to the rear monitor, in which case the movement of the monitor would be from top to bottom or from left to right or vice versa.
  • a series of radiographs taken with successive horizontal displacements are shown in Figure 3.
  • a possible embodiment is by means of a displacement between 1 cm shots.
  • the order of radiographs that will form the film to be visualized by the left eye will be: 1 a , 2 a , 3 a , 4 a , 5 a . 17 to
  • the order of radiographs that will form the film to be visualized by the right eye will be: 4 a , 5 a , 6 a , 7 a , 8 a . 20 to
  • the generation of the two films can be done automatically or by using appropriate software designed for this purpose or by a relatively simple procedure that would be performed as follows.
  • One of the outputs that comes from the Video distributor is applied to a video on / off circuit so that we do not have an output signal in the circuit until it receives the corresponding order, keeping the monitor associated with this output with the black screen
  • the other output of the video distributor is applied to a buffer circuit which will be receiving that information and filling up, not giving a signal at its exit until receiving the corresponding order, thus maintaining the monitor associated to its output with the black screen.
  • a timer circuit after the programmed time, or by frame count, will generate a trigger pulse that will be sent simultaneously to the video on / off circuit and to the buffer to activate its outputs.
  • the circuits are activated and the first monitor receives the information corresponding to radiography number 4 and to the second monitor the information corresponding to radiography number 1 arrives at the same time.
  • One of the outputs that comes from the Video distributor is applied to a video on / off circuit so that we do not have an output signal in the circuit until it receives the corresponding order, keeping the monitor associated with this output with the black screen
  • the other output of the video distributor is applied to a buffer circuit which will be receiving that information and filling up, not giving a signal at its exit until receiving the corresponding order, thus maintaining the monitor associated to its output with the black screen.
  • a timer circuit after the programmed time, or by frame count, will generate a trigger pulse that will be sent simultaneously to the video on / off circuit and to the buffer to activate its outputs. For example:
  • Each pair of stereo images will consist of two images between shots will separation between 1 and 12 ° or preferably between 3 and 7th
  • the distance between torque and torque may be as desired in this particular case of 4 radiographs will be 90 ° so that we can make a complete 360 ° rotation
  • the films would be generated automatically by assigning each shot made to the film corresponding to the eye that should see it.
  • radiographs For example if we make 4 radiographs to 0 or 5 or 90 ° and 95 ° we will obtain, without the need to perform them, the radiographs corresponding to 180 °, 185 °, 270 ° and 275 ° just by flipping the first 4 180 ° on its axis of vertical symmetry.
  • a the other eye 5 or 95 °, 185 ° and 275 °
  • the other eye takes pairs 2, 4, 6, 8, 10, 12, .... etc. etc.
  • Each pair of stereo images will consist of two images between shots will separation between 1 and 12 ° or preferably between 3 and 7th
  • the distance between torque is greater than the distance between the two radiographs of each pair.
  • the stereoscopic film is carried out using an additional platform or a determined tooling in which the support platform of the object to be studied is rotated.
  • the turn we consider appropriate depending on how smooth we want the transition between frames can be 1 or 1 or but taking into account that the frames we will use to make the films that will form the stereoscopic film comprised maintain a separation between 1 and 12 ° or depending on the desired depth in the stereoscopic image observed.
  • Figure 4 shows the construction scheme of a stereoscopic monitor equipped with a plotter, where we can see that it comprises a rear monitor (6), an upper monitor (5) in transverse arrangement with the rear and on which a plotter is deposed. (7) for moving the upper monitor (5) from right to left, and from front to back or vice versa.
  • the set of both monitors is arranged on a base (8), it also has a rod (9) for signaling on the virtual image (10).
  • the image 37 would be the same as the 1 but turned 180 ° and likewise the image 38 is like the 2 turned 180 0 and so on, so if we take that of 0 or , that of 45 °, the 90 ° and the 135 °
  • the other film that will form stereoscopic images because we do the same procedure.
  • Figure 6 shows a possible simulation of a CT scan, where a series of frames obtained at 0 o , 45 °, 90 °, 135 ° appear in the top row, and where the frames 180 ° 225 °, 270 ° and 315 ° are the same frames obtained at 0 or , 45 °, 90 °, 135 ° but rotated 180 ° with respect to its vertical axis.
  • radiographs which correspond to four pairs of stereographic images
  • a stereographic film can be obtained that can show a double view, one from the front and one from the back. of the same object, in a certain way imitating a CT (Computerized Axial Tomography), clearly with a smaller number of radiographs.
  • CT Computerized Axial Tomography
  • stereoscopic images are obtained that offer a double view and also offer additional information regarding the positioning of the existing objects inside the radiographed object, that is to say its depth, while if an object We make a series of photographs displaced longitudinally or rotating around the object to obtain a stereographic image and then rotate them 180 ° with respect to its axis of vertical symmetry. relative interior of the objects contained within it but we would get a stereographic image of the front and back of the photographed object without obtaining any information on the existence of interior objects to the photographed object and therefore also of the relative position or depth of the interior objects that the photographed object could contain inside.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Optics & Photonics (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

L'invention concerne un procédé comprenant les étapes consistant à : effectuer au moins deux radiographies dans la zone d'étude, déplacer dans le sens longitudinal la tête du tube de rayons X ou la table où est situé l'objet, tourner l'ensemble tube à rayons X-capteur, utiliser une plateforme supplémentaire pour faire tourner l'objet, appliquer les radiographies aux deux moniteurs d'un moniteur stéréoscopique, sur une de leurs faces et ensuite les deux images sont disposées sur l'autre des faces, le double visionnage étant ainsi obtenu. Le moniteur stéréographique est pourvu d'un ensemble de guides verticaux et de guides horizontaux en guise de table traçante. On obtient la formation d'une image tridimensionnelle 3D en effectuant uniquement deux radiographies, ce qui offre un visionnage de la partie avant et de la partie arrière de l'image radiographiée avec des informations de profondeur, ou d'un film qui offre la possibilité d'un double visionnage.
PCT/ES2019/070466 2018-07-04 2019-07-02 Procédé pour la prise d'images et films stéréoscopiques à double visionnage Ceased WO2020008094A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP201830671 2018-07-04
ES201830671A ES2737452B2 (es) 2018-07-04 2018-07-04 Procedimiento para realizacion de imagenes y peliculas estereoscopias de doble visionado

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WO2020008094A1 true WO2020008094A1 (fr) 2020-01-09

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5870450A (en) * 1995-05-18 1999-02-09 Continental X-Ray Corporation Universal radiographic/fluoroscopic digital room
WO2007148219A2 (fr) * 2006-06-23 2007-12-27 Imax Corporation Procédés et systèmes de conversion d'images cinématographiques 2d pour une représentation stéréoscopique 3d
WO2012090470A1 (fr) * 2010-12-27 2012-07-05 富士フイルム株式会社 Dispositif d'affichage d'image tridimensionnelle et procédé d'affichage d'image tridimensionnelle
US20130230136A1 (en) * 2011-08-25 2013-09-05 Toshiba Medical Systems Corporation Medical image display apparatus and x-ray diagnosis apparatus
US20150342546A1 (en) * 2013-02-14 2015-12-03 Kabushiki Kaisha Toshiba X-ray diagnostic apparatus
WO2016026053A1 (fr) * 2014-08-21 2016-02-25 Halifax Biomedical Inc. Systèmes et procédés de mesure et d'évaluation de l'instabilité de la colonne vertébrale

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5870450A (en) * 1995-05-18 1999-02-09 Continental X-Ray Corporation Universal radiographic/fluoroscopic digital room
WO2007148219A2 (fr) * 2006-06-23 2007-12-27 Imax Corporation Procédés et systèmes de conversion d'images cinématographiques 2d pour une représentation stéréoscopique 3d
WO2012090470A1 (fr) * 2010-12-27 2012-07-05 富士フイルム株式会社 Dispositif d'affichage d'image tridimensionnelle et procédé d'affichage d'image tridimensionnelle
US20130230136A1 (en) * 2011-08-25 2013-09-05 Toshiba Medical Systems Corporation Medical image display apparatus and x-ray diagnosis apparatus
US20150342546A1 (en) * 2013-02-14 2015-12-03 Kabushiki Kaisha Toshiba X-ray diagnostic apparatus
WO2016026053A1 (fr) * 2014-08-21 2016-02-25 Halifax Biomedical Inc. Systèmes et procédés de mesure et d'évaluation de l'instabilité de la colonne vertébrale

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Stereo display", 21 July 2017 (2017-07-21), XP055673730, Retrieved from the Internet <URL:https://web.archive.org/web/20170721101332/https:/in.wikipedia.org/wiki/Stereodisplay> [retrieved on 20190822] *

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