DE507266C - Method for determining the inclination and tilt of a flight photograph at the moment of exposure - Google Patents
Method for determining the inclination and tilt of a flight photograph at the moment of exposureInfo
- Publication number
- DE507266C DE507266C DEL73330D DEL0073330D DE507266C DE 507266 C DE507266 C DE 507266C DE L73330 D DEL73330 D DE L73330D DE L0073330 D DEL0073330 D DE L0073330D DE 507266 C DE507266 C DE 507266C
- Authority
- DE
- Germany
- Prior art keywords
- horizon
- photograph
- terrain
- exposure
- moment
- 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
Links
Classifications
-
- 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
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/24—Details of cameras or camera bodies; Accessories therefor with means for separately producing marks on the film, e.g. title, time of exposure
-
- 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
- G03B11/00—Filters or other obturators specially adapted for photographic purposes
-
- 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
- G03B15/006—Apparatus mounted on flying objects
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Blocking Light For Cameras (AREA)
Description
Um eine aus der Luft aufgenommene Photographie zur Geländeaufnahme verwenden zu können, muß man die Neigung und Verkantung des Negativs kennen, d. h. den Winkel, den die Platte oder der Film im Belichtungsaugenblicke mit dem abzubildenden Gebiet bildet. Nach früheren Verfahren hat man diese Neigung und Verkantung entweder mit Hilfe von Wasserwagen im Belichtungsaugenblick oder durch später ausgeführte Messungen im Gelände festgestellt. Das erstere Verfahren ergibt keine genügende Genauigkeit, das letztere dagegen ist zwar genau, aber sehr umständlich.To use an aerial photograph to survey the terrain To be able to do this, one must know the inclination and tilt of the negative, i.e. H. the Angle between the plate or the film and the image to be imaged at the instant of exposure Area forms. According to previous methods, this inclination and canting is either with the help of water carts at the moment of exposure or with those carried out later Measurements found in the field. The former method does not give sufficient accuracy, the latter, on the other hand, is precise, but very cumbersome.
In letzter Zeit hat man der Bestimmung der Plattenneigung im Belichtungsaugenblick mittels Horizontaufnahmen seine Aufmerksamkeit zugewandt. Mit anderen Worten ist es versucht worden, den Horizont zu photo-Lately one has to determine the plate inclination at the moment of exposure by means of Horizon shots turned his attention. In other words, attempts have been made to photograph the horizon
ao graphieren und auf Grund dessen die Plattenneigung zu bestimmen. Die unternommenen Versuche haben aber bisher noch nicht zu befriedigenden Resultaten geführt. Es ist nämlich bemerkt worden, daß man denao graph and on the basis of this the inclination of the plate to determine. However, the attempts that have been made have not yet led to satisfactory results. It is namely, it has been noticed that the
«5 Horizont nur in speziellen, besonders günstigen Fällen auf dem Bilde zur Erscheinung bringen kann.«5 Horizon only appears in the picture in special, particularly favorable cases can bring.
Nach der vorliegenden Erfindung ist diese Aufgabe jedoch mittels langwieriger VersucheAccording to the present invention, however, this object is achieved by means of lengthy experiments
gelöst. Die Erfindung gründet sich darauf, daß beim Photographieren .des Horizontes ein sehr starkes Rotfilter (z. B. ein solches, das nur Strahlen mit einer Wellenlänge über 600 μμ durchläßt) sowie rotempfindlichessolved. The invention is based on the fact that when photographing the horizon, a very strong red filter (e.g. one that only allows rays with a wavelength of more than 600 μμ to pass through) and red-sensitive filters
(panchromatisches) Negativmaterial verwendet wird. Man erhält den Horizont alsdann immer als gerade Linie abgebildet, und die Neigung der Platte im Belichtungsmoment läßt sich aus diesen Bildern durch einfache Winkelmessung mit 10' Genauigkeit bestimmen. (panchromatic) negative material is used. Then you get the horizon always shown as a straight line, and the inclination of the plate at the moment of exposure can be determined from these images by simple angle measurement with 10 'accuracy.
In der beiliegenden Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes schematisch dargestellt.In the accompanying drawing is an exemplary embodiment of the subject matter of the invention shown schematically.
Aibb. ι zeigt die Stellung der photographischen Platte und der Objektive von der Seite gesehen undAibb. ι shows the position of the photographic plate and the lenses from the side seen and
Abb. 2 die dazugehörige Draufsicht.Fig. 2 the associated top view.
Die photographische Platte 1 und das Objektiv 2 bilden eine gewöhnliche Geländekamera. Die Objektive 3 und 4, die durch die Zwischenwände 5 von der Geländekamera getrennt sind, bilden mit Hilfe der entsprechenden rechtwinkeligen Prismen 6 und 7 den Horizont in zwei zueinander senkrechten Richtungen auf derselben Platte 1 ab, an deren Kanten dafür Platz vorbehalten ist, wie aus der Abb. 2 hervorgeht. Die Objektive und Prismen sind so geordnet, daß die optische Achse α des Geländeobjektivs 2 sowie die durch die Prismen 6 und 7 gebrochenen optischen Achsen b und c der Horizontobjektive 3 und 4 senkrecht zueinander stehen. Vor den Horizontobjektiven 3 und 4 befindet sich je ein rotes Lichtfilter 8 und 9 und vor dem Gelätideobj ektiv 2 ein Gelbfilter 10. Beim Photographieren findet die Belichtung durch alle drei Objektive gleichzeitig statt, so daß die Neigung und Verkantung eines jeden Geländebildes im Belichtungsaugenblick aus den Horizontbildern, die sich auf derselben Platte befinden, bestimmt werden kann.The photographic plate 1 and the lens 2 constitute an ordinary terrain camera. The lenses 3 and 4, which are separated from the terrain camera by the partitions 5, use the corresponding right-angled prisms 6 and 7 to image the horizon in two mutually perpendicular directions on the same plate 1, at the edges of which space is reserved for this Fig. 2 shows. The lenses and prisms are arranged in such a way that the optical axis α of the terrain lens 2 and the optical axes b and c of the horizon lenses 3 and 4, which are refracted by the prisms 6 and 7, are perpendicular to one another. In front of the horizon lenses 3 and 4 there is a red light filter 8 and 9 and a yellow filter 10 in front of the Gelätideobj ektiv 2 Horizon images that are on the same plate can be determined.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL73330D DE507266C (en) | Method for determining the inclination and tilt of a flight photograph at the moment of exposure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL73330D DE507266C (en) | Method for determining the inclination and tilt of a flight photograph at the moment of exposure |
Publications (1)
Publication Number | Publication Date |
---|---|
DE507266C true DE507266C (en) | 1930-09-13 |
Family
ID=7283205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL73330D Expired DE507266C (en) | Method for determining the inclination and tilt of a flight photograph at the moment of exposure |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE507266C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE746502C (en) * | 1940-01-05 | 1944-08-05 | Ing Dr Hans Dock | Procedure and device for bridging areas without fixed points |
-
0
- DE DEL73330D patent/DE507266C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE746502C (en) * | 1940-01-05 | 1944-08-05 | Ing Dr Hans Dock | Procedure and device for bridging areas without fixed points |
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