SE7902068L - METHODS AND DEVICE FOR LAYER REPRODUCTION OF FOREMS WITH EXTENSION IN THE ROOM - Google Patents

METHODS AND DEVICE FOR LAYER REPRODUCTION OF FOREMS WITH EXTENSION IN THE ROOM

Info

Publication number
SE7902068L
SE7902068L SE7902068A SE7902068A SE7902068L SE 7902068 L SE7902068 L SE 7902068L SE 7902068 A SE7902068 A SE 7902068A SE 7902068 A SE7902068 A SE 7902068A SE 7902068 L SE7902068 L SE 7902068L
Authority
SE
Sweden
Prior art keywords
image
images
delta
location
signal
Prior art date
Application number
SE7902068A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
H Dammann
U Tiemens
Original Assignee
Philips Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Nv filed Critical Philips Nv
Publication of SE7902068L publication Critical patent/SE7902068L/en

Links

Classifications

    • 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
    • A61B6/025—Tomosynthesis
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/06—Processes or apparatus for producing holograms using incoherent light

Landscapes

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

Abstract

In tomosynthesis, plural sources 1, 2, 3, 4, form shadowgraph images P1, P2, P3, P4 of an object with features A, B from different perspective directions. In synthesising a selected sectional image the images P1 ... P4 are superposed with appropriate shift to cause corresponding image point locations defining the selected layer to overlap and reinforce one another. The present invention reduces the effect of background image points from other layers by a process of selection or enhancement logic which is applied to each set of overlapping local image values relating to a corresponding image location in the selected section, to allocate to that location a related image value or a substantially zero value depending on whether the image detail is assessed as lying in the selected section or not. In one embodiment, Figure 4, the images P1 ... P4 are each scanned in 5 lines Z1 ... Z5 to form a corresponding video signal 9 which is applied to a parallel storage arrangement with different shift delays O, DELTA t1, DELTA t2, DELTA t3. The overlapping signal values at each location Pn1 ... Pn4 are processed by an analyser 10a which causes a control stage 10b to transfer an image signal to an output register Sn for display only when a signal exceeds a threshold in all or most component images. Alternatively (Fig. 7 not shown) images P1 ... P4 can be multiplied together using a Titus tube, polarised light beam and associated television equipment. <IMAGE>
SE7902068A 1978-03-11 1979-03-08 METHODS AND DEVICE FOR LAYER REPRODUCTION OF FOREMS WITH EXTENSION IN THE ROOM SE7902068L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782810608 DE2810608A1 (en) 1978-03-11 1978-03-11 PROCESS FOR LOW-DISTURBANCE LAYER REPRESENTATION OF SPATIAL OBJECTS BY USING DIFFERENT PERSPECTIVE IMAGES

Publications (1)

Publication Number Publication Date
SE7902068L true SE7902068L (en) 1979-09-12

Family

ID=6034153

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7902068A SE7902068L (en) 1978-03-11 1979-03-08 METHODS AND DEVICE FOR LAYER REPRODUCTION OF FOREMS WITH EXTENSION IN THE ROOM

Country Status (9)

Country Link
JP (1) JPS54127296A (en)
BE (1) BE874732A (en)
DE (1) DE2810608A1 (en)
ES (1) ES478477A1 (en)
FR (1) FR2419059A1 (en)
GB (1) GB2016855A (en)
IT (1) IT1110535B (en)
NL (1) NL7901806A (en)
SE (1) SE7902068L (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2945057C2 (en) * 1979-11-08 1984-06-07 Philips Patentverwaltung Gmbh, 2000 Hamburg Process for reducing image defects in layer images of a three-dimensional object produced with the aid of penetrating radiation
DE3006828A1 (en) * 1980-02-23 1981-09-10 Philips Patentverwaltung Gmbh, 2000 Hamburg DEVICE FOR GENERATING LAYER IMAGES OF A THREE-DIMENSIONAL OBJECT BY USING OVERLAY ZONOGRAMS
GB2208194A (en) * 1987-05-02 1989-03-08 Rolls Royce Plc Tomographic imaging
DE4109559A1 (en) * 1991-03-24 1992-10-01 Fraunhofer Ges Forschung Tomosynthesis system for determining two or three=dimensional data of object - has source which transmits stream of particles or wave field which penetrates object being investigated and is weakened corresp. to D=dimensional object structure
US5359637A (en) * 1992-04-28 1994-10-25 Wake Forest University Self-calibrated tomosynthetic, radiographic-imaging system, method, and device
US6289235B1 (en) 1998-03-05 2001-09-11 Wake Forest University Method and system for creating three-dimensional images using tomosynthetic computed tomography
US6081577A (en) 1998-07-24 2000-06-27 Wake Forest University Method and system for creating task-dependent three-dimensional images
US6373917B1 (en) * 2000-08-30 2002-04-16 Agilent Technologies, Inc. Z-axis elimination in an X-ray laminography system using image magnification for Z plane adjustment
CN113547512B (en) * 2021-08-04 2022-09-06 长春电子科技学院 Intelligent detection manipulator for machining clamp body

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3499146A (en) * 1966-10-10 1970-03-03 Albert G Richards Variable depth laminagraphy with means for highlighting the detail of selected lamina
DE2318656C3 (en) * 1973-04-13 1981-01-29 Philips Patentverwaltung Gmbh, 2000 Hamburg X-ray film recorder with an image recording device supplying video signals, with an image storage device and an image storage tube
DE2431700C3 (en) * 1974-07-02 1980-04-24 Philips Patentverwaltung Gmbh, 2000 Hamburg Decoding of an overlay image of three-dimensional objects
DE2555044C2 (en) * 1975-12-06 1983-07-07 Philips Patentverwaltung Gmbh, 2000 Hamburg Device for generating slice images

Also Published As

Publication number Publication date
NL7901806A (en) 1979-09-13
IT1110535B (en) 1985-12-23
ES478477A1 (en) 1979-12-01
FR2419059A1 (en) 1979-10-05
IT7920840A0 (en) 1979-03-08
FR2419059B1 (en) 1984-12-28
DE2810608A1 (en) 1979-09-20
BE874732A (en) 1979-09-10
JPS54127296A (en) 1979-10-03
GB2016855A (en) 1979-09-26

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