DE102004026630B4 - Method and device for macro photography - Google Patents
Method and device for macro photography Download PDFInfo
- Publication number
- DE102004026630B4 DE102004026630B4 DE102004026630A DE102004026630A DE102004026630B4 DE 102004026630 B4 DE102004026630 B4 DE 102004026630B4 DE 102004026630 A DE102004026630 A DE 102004026630A DE 102004026630 A DE102004026630 A DE 102004026630A DE 102004026630 B4 DE102004026630 B4 DE 102004026630B4
- Authority
- DE
- Germany
- Prior art keywords
- camera
- ring
- light
- lateral
- polarizing filter
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 0 CC*C(CCCCCCC(CCN)C**C)CCC*C Chemical compound CC*C(CCCCCCC(CCN)C**C)CCC*C 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0661—Endoscope light sources
- A61B1/0684—Endoscope light sources using light emitting diodes [LED]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00163—Optical arrangements
- A61B1/00186—Optical arrangements with imaging filters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0605—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements for spatially modulated illumination
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0625—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements for multiple fixed illumination angles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0646—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements with illumination filters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/24—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/14—Special procedures for taking photographs; Apparatus therefor for taking photographs during medical operations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2215/00—Special procedures for taking photographs; Apparatus therefor
- G03B2215/05—Combinations of cameras with electronic flash units
- G03B2215/0514—Separate unit
- G03B2215/0517—Housing
- G03B2215/0539—Ringflash
Abstract
Verfahren
zur Makrofotografie von Objekten wie Zähnen und Zahnbögen mittels
einer Kamera 8 mit Nahlinse 10 und einem Polarisationsfilter 9,
einer zur optischen Achse 12 der Kamera 8 zentrierten Ringleuchte 1
mit Polarisationsfilterring 13 und einer ersten und einer zweiten
an der Ringleuchte 1 verstellbar angeordneten Lateralleuchte 2,
2', bestehend aus folgenden Verfahrensschritten:
(1) Ausrichtung
der Kamera 8 auf das abzubildende Objekt mit eingeschalteter Ringleuchte
1
(2) manuelle Verdrehung der Polarisationsebene des Polarisationsfilters
9 oder des Polarisationsfilterrings 13 bis Reflexionen der Ringleuchte
1 auf dem Objekt im Sucher oder auf dem Display der Kamera verschwunden
sind
(3) Zuschalten einer vorgegebenen Anordnung von einzelnen
Lampen der Lateralleuchten 2, 2' zur Erzeugung einer zusätzlichen
seitlichen Beleuchtung mit unpolarisiertem Licht
(4) Veränderung
der seitlichen Beleuchtung des Objekts durch Wechsel zu einer unterschiedlichen
Anordnung der zugeschalteten Lampen der Lateralleuchten 2, 2' mit
einer wählbaren
Wechselfrequenz
(5) Auswahl einer Lateralbeleuchtungssituation...Method for macrophotography of objects such as teeth and dental arches by means of a camera 8 with close-up lens 10 and a polarizing filter 9, a ring light 1 centered with the optical axis 12 of the camera 8 with polarization filter ring 13 and a first and a second lateral light 2 adjustably arranged on the ring light 1, 2 ', consisting of the following process steps:
(1) Alignment of the camera 8 on the object to be imaged with ring light 1
(2) manual rotation of the polarization plane of the polarizing filter 9 or of the polarization filter ring 13 until reflections of the ring light 1 have disappeared on the object in the viewfinder or on the display of the camera
(3) Connecting a given arrangement of individual lamps of the lateral lights 2, 2 'to produce additional lateral illumination with unpolarized light
(4) Change of the lateral illumination of the object by changing to a different arrangement of the switched lamps of the Lateral lights 2, 2 'with a selectable frequency change
(5) Selection of a lateral lighting situation ...
Description
Die Erfindung betrifft ein Verfahren zur Herstellung fotografischer Makroaufnahmen vorzugsweise zur bildlichen Darstellung von Zähnen und Zahnbögen sowie eine Vorrichtung zur Realisierung des Verfahrens.The The invention relates to a process for producing photographic Macro photographs preferably for the representation of teeth and arches and an apparatus for implementing the method.
Verfahren und Vorrichtungen zur Herstellung von Makroaufnahmen in der Fotografie sind aus der Patentliteratur bekannt.method and devices for making macro shots in photography are known from the patent literature.
Die
deutsche Offenlegungsschrift
Die
europäische
Patentschrift
Die
europäische
Patentanmeldung
Die PCT-Anmeldung WO 00/69 333 A1 betrifft ein Verfahren und eine Vorrichtung zur Untersuchung von Defekten am Zahnschmelz oder am Zahnhals eines Zahnens, wobei das Untersuchungsobjekt mit Licht bekannter Polarisation beleuchtet wird und bei dem vom Zahhngewebe zurück gestreuten Licht der Grad der Depolarisation gemessen wird.The PCT application WO 00/69 333 A1 relates to a method and a device for the examination of defects on the enamel or on the neck of a tooth Teething, wherein the examination subject with light of known polarization is illuminated and the light scattered back from Zahhngewebe the degree the depolarization is measured.
Ringleuchten mit oder ohne fokussierbare Lichtquellen, vorzugsweise unter Verwendung von Leuchtdioden als Leuchtmittel, bieten bei der Makro- und Dentalfotografie den Vorteil der schattenfreien Ausleuchtung von auf der optischen Achse des Kameraobjektives und der Ringleuchte im wesentlichen senkrecht stehenden Flächen. Derartige Ringleuchten sind als Stand der Technik bekannt. Derartige Ringleuchten weisen jedoch den Nachteil auf, daß auf Grund der nahezu direkten Lichteinfallsrichtung parallel zur Richtung der optischen Achse der Kamera und des definierten Durchmessers des Ringlichtes bei frontseitigen Aufnahmen des Zahnbogens Molaren und Prämolaren nicht ausreichend ausgeleuchtet und die Oberflächen der Frontzähne zu stark ausgeleuchtet werden. Das Ergebnis sind überbelichtete Frontzähne und zu dunkel abgebildete Molaren. Des weiteren treten an den Zahnoberflächen störende Reflexionen auf. Verstärkt werden diese noch bei Speichelfilmen an und zwischen den Zähnen.ring lights with or without focusable light sources, preferably using of light-emitting diodes as bulbs, provide in macro and dental photography the advantage of the shadow-free illumination of on the optical Axis of the camera lens and the ring light substantially perpendicular standing surfaces. Such ring lights are known as prior art. Such ring lights However, have the disadvantage that due to the almost direct Light incident direction parallel to the direction of the optical axis the camera and the defined diameter of the ring light frontal images of the dental arch molars and premolars not sufficiently lit and the surfaces of the anterior teeth too strong be lit up. The result is overexposed anterior teeth and too dark pictured molars. Furthermore, disturbing reflections occur at the tooth surfaces on. reinforced These are still with saliva films on and between the teeth.
Bei der Dentalfotografie ist von Bedeutung, daß das Reflexionsvermögen des Zahnschmelzes von der Wellenlänge des einfallenden Lichts abhängt.at Dental photography is important in that the reflectivity of the Enamel of the wavelength depends on the incoming light.
Der Zahnschmelz wirkt wie ein Spektralfilter, der aus dem Tageslicht die kurzwelligen, blauen Anteile reflektiert, während die langwelligen, beispielsweise orangefarbenen Lichtwellen den Zahnschmelz passieren. Diese Opaleszenz dominiert im incisalen Bereich, wo die eigentliche Zahnfarbe in den Hintergrund tritt. Darüber hinaus weist der Zahnschmelz eine Struktur auf, die eine Abhängigkeit des Reflexionsvermögens vom Einfallswinkel bewirkt.Of the Enamel acts like a spectral filter that is out of daylight the short-wave, blue components reflected, while the long-wave, for example orange light waves pass through the enamel. This opalescence dominates in the incisal area where the actual tooth color is in the background occurs. About that In addition, the enamel has a structure that is a dependency of reflectivity caused by the angle of incidence.
Ferner sind sowohl im Dentin als auch im Zahnschmelz der Zähne fluoreszierende Substanzen enthalten, wobei das Dentin stärker fluoresziert als der Zahnschmelz. Weiterhin zeigt ein Zahn durch seine variierende Topographie unterschiedliche Helligkeitswerte.Further are fluorescent in both the dentin and enamel of the teeth Contain substances, whereby the dentin fluoresces more strongly than the tooth enamel. Furthermore, a tooth shows different shapes due to its varying topography Brightness values.
Bei der Dentalfotografie ist es wünschenswert, opake und transluzente und fluoreszierende Strukturen eines Zahnes oder einer Zahnreihe derart darzustellen, daß insbesondere bei einer frontseitigen Aufnahme des Zahnbogens die Oberflächen der Zähne und die Molaren und Prämolaren so ausgeleuchtet werden, daß vorhandene Zahnstrukturen auf den Aufnahmen sichtbar werden. Derartige Aufnahmen sollen die Bildkommunikation zwischen Zahnarzt und Zahntechniker unterstützen. Aufnahmen unter Verwendung von bekannten Ringleuchten liefern wegen des nahezu senkrechten Lichteinfalls keine befriedigende Darstellung der opaken, transluzenten oder fluoreszierenden Strukturen; vielmehr werden die Lichtquellen der Ringleuchte als Reflexionen auf der Zahnoberfläche abgebildet.at Dental photography, it is desirable opaque and translucent and fluorescent structures of a tooth or a row of teeth represent such that in particular at a front side Recording the dental arch the surfaces of the teeth and the molars and premolars be illuminated so that existing Tooth structures are visible on the images. Such recordings should be the image communication between dentist and dental technician support. Recordings using known ring lights deliver because the nearly vertical light incidence no satisfactory representation the opaque, translucent or fluorescent structures; much more be the light sources of the ring light as reflections on the tooth surface displayed.
Die Aufgabe der Erfindung ist es daher, ein Verfahren zur Herstellung von Makroaufnahmen in der Dentalfotografie bereit zu stellen, mit dem die opaken, transluzenten und fluoreszierenden Strukturen von Zähnen und Zahnbögen gut sichtbar und ohne störende Reflexionen dargestellt werden.The The object of the invention is therefore to provide a process for the preparation of macro shots in dental photography to provide with the opaque, translucent and fluorescent structures of tooth and dental arches well visible and without disturbing Reflections are presented.
Die Aufgabe der Erfindung wird durch ein Verfahren und eine Vorrichtung gelöst, die an Hand der Abbildungen näher erläutert werden.The The object of the invention is achieved by a method and a device solved, the closer to the pictures explained become.
In
In
In
Es
ist vorgesehen, im Strahlengang zwischen wenigstens einigen der
Lampen
Unabhängig von
der Einstellung verschiedener Beleuchtungssituationen sind die Lateralleuchten
Durch
die Anordnung der Lampen in der Ringleuchte
Die Erfindung betrifft ferner ein Verfahren zur Makrofotografie, insbesondere der Dentalfotografie, bei dem wenigstens zwei Aufnahmen des Objektes mit unterschiedlichen Beleuchtungssituationen angefertigt werden und die Aufnahmen in einem Bildverarbeitungsrechner verarbeitet werden. In der Praxis hat es sich als vorteilhaft erwiesen eine Reihe von 5 bis 10 Aufnahmen zu erstellen und wenigstens ein aus den Bildinformationen von mehreren Einzelbildern zusammengesetztes künstlich zusammengesetztes Bild zu errechnen. Ein Auswerteverfahren sieht vor, den Helligkeitswert eines Pixels oder eines Clusters von Pixeln von den Werten vergleichbarer Pixel einer Folgeaufnahme zu subtrahieren und die Ergebnisse in einer Fehlfarbendarstellung zusammen zu führen.The The invention further relates to a method for macro photography, in particular Dental photography, in which at least two shots of the object with be made different lighting situations and the images are processed in an image processing computer. In practice, it has proved to be advantageous a number of 5 to 10 shots to create and at least one from the image information composed of several frames artificially composite image to calculate. An evaluation method provides the brightness value of a pixel or cluster of pixels comparable to the values Subtract pixels from a sequence shot and see the results in to bring together a false color representation.
Es ist ferner vorgesehen, von den Einzelaufnahmen lediglich bestimmte Bildbereiche auszuwählen und diese dann zu einem kompletten, künstlich zusammen gesetzten Panoramabild zu vereinen. It is also provided, of the individual shots only certain Select image areas and then this to a complete, artificially composed Combine panoramic picture.
Verzeichnis der Abbildungen:List of pictures:
- 11
- Ringleuchtering light
- 2, 2'2, 2 '
- LateralleuchteLate Rail lamp
- 3, 3'3, 3 '
- Kugelgelenkball joint
- 4, 4'4, 4 '
- Lampelamp
- 55
- elektrische Schaltvorrichtungelectrical switching device
- 66
- Halterung für optische Filterbracket for optical filter
- 77
- PolarisationsfilterfoliePolarizing filter foil
- 88th
- Kameracamera
- 99
- Polarisationsfilterpolarizing filter
- 1010
- NahlinseClose-up Lens
- 1111
- Zahnbogenarch
- 1212
- optische Achseoptical axis
- 1313
- PolarisationsfilterringPolarizing filter ring
- 1414
- Lampengruppen/SegmenteLamp groups / segments
- 1515
- Abstandshalterspacer
- 1616
- Rändelschraubethumbscrew
- 1717
- Millimeterskalamillimeter scale
- 1818
- Energieversorgungpower supply
Claims (23)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004026630A DE102004026630B4 (en) | 2004-05-27 | 2004-05-27 | Method and device for macro photography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004026630A DE102004026630B4 (en) | 2004-05-27 | 2004-05-27 | Method and device for macro photography |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102004026630A1 DE102004026630A1 (en) | 2005-12-29 |
DE102004026630B4 true DE102004026630B4 (en) | 2007-05-03 |
Family
ID=35454828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004026630A Expired - Fee Related DE102004026630B4 (en) | 2004-05-27 | 2004-05-27 | Method and device for macro photography |
Country Status (1)
Country | Link |
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DE (1) | DE102004026630B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008035959A1 (en) | 2008-07-31 | 2010-03-04 | Doctorseyes Gmbh | Device for production of digital macro photographs of tooth sector in mouth area, has digital camera, lighting device and lighting control, where lighting device has diffused radiating ring light with light emitting diodes |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0619658D0 (en) * | 2006-10-04 | 2006-11-15 | Optident Ltd | Illumination apparatus |
DE102007013355A1 (en) * | 2007-03-16 | 2008-09-18 | Dürr Dental GmbH & Co. KG | Diagnostic camera and attachment for the realization of such |
DE102014113258A1 (en) | 2014-09-15 | 2016-03-17 | Carl Zeiss Ag | Method for generating a result image and optical device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000069333A1 (en) * | 1999-05-19 | 2000-11-23 | The Regents Of The University Of California | Optical detection of dental disease using polarized light |
DE19911522A1 (en) * | 1999-03-16 | 2000-12-21 | L & P Elektroautomatisation Gm | Circular lamp for homogenous illumination, incorporates LEDs fitted on a printed circuit board with a photo lens in the region of its center opening for industrial image processing |
US6404984B1 (en) * | 1998-11-19 | 2002-06-11 | Sony Corporation | Lighted camera for dental examinations and method of using the same |
EP1150154B1 (en) * | 2000-04-26 | 2003-03-26 | COBRA electronic GmbH | Device and method for annular illumination, especially for bright field illumination of microscopes |
EP1327851A1 (en) * | 1998-08-05 | 2003-07-16 | Cadent Ltd. | Imaging a three-dimensional structure by confocal focussing an array of light beams |
-
2004
- 2004-05-27 DE DE102004026630A patent/DE102004026630B4/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1327851A1 (en) * | 1998-08-05 | 2003-07-16 | Cadent Ltd. | Imaging a three-dimensional structure by confocal focussing an array of light beams |
US6404984B1 (en) * | 1998-11-19 | 2002-06-11 | Sony Corporation | Lighted camera for dental examinations and method of using the same |
DE19911522A1 (en) * | 1999-03-16 | 2000-12-21 | L & P Elektroautomatisation Gm | Circular lamp for homogenous illumination, incorporates LEDs fitted on a printed circuit board with a photo lens in the region of its center opening for industrial image processing |
WO2000069333A1 (en) * | 1999-05-19 | 2000-11-23 | The Regents Of The University Of California | Optical detection of dental disease using polarized light |
EP1150154B1 (en) * | 2000-04-26 | 2003-03-26 | COBRA electronic GmbH | Device and method for annular illumination, especially for bright field illumination of microscopes |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008035959A1 (en) | 2008-07-31 | 2010-03-04 | Doctorseyes Gmbh | Device for production of digital macro photographs of tooth sector in mouth area, has digital camera, lighting device and lighting control, where lighting device has diffused radiating ring light with light emitting diodes |
Also Published As
Publication number | Publication date |
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DE102004026630A1 (en) | 2005-12-29 |
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Effective date: 20121201 |