DE3219070A1 - Stereo imaging method for producing, recording and transmitting individual images which can be perceived in colours and plastically - Google Patents

Abstract

Both beams which are intended to reach the left eye and beams which are intended for the right eye pass into a novel stereo attachment (stereoscopic attachment), as in the case of the previous stereo attachments, onto deflection elements at the base separation. However the two groups of beams now go through two mutually complementary-coloured filters, so that, for example, the left stereo image still contains only the spectral colours of red to orange and the right stereo image still contains only the remaining spectral colours of yellow to violet. These two stereo images are combined by means of a beam splitter to form a single image which is photographed using a normal camera. Only one transmission path and one video tape recorder are required for transmission and recording. Reproduction is carried out on a single colour television screen, with the aid of a colour cine film, in a colour slide or a coloured paper image. Stereo glasses with suitable lenses, of complementary colour to one another, are required for viewing. The stereo imaging method is partially compatible since, for a predetermined object plane, a colour image is produced which is seen in the correct colours even without stereo glasses.

Description

Description - ·>

Stereo image process for generating, recording and transmitting individual images that can be perceived in color

The invention relates to a color stereo imaging method with the help of a new stereo attachment only a single image is generated, so that for recording and Transmission neither a second camera nor a second transmission link nor a second playback device are needed. For the first time, an additive coupling color process is used to record colored stereo images. its use has hitherto only been proposed for viewing colored stereo images that have already been recorded was.

State of the art with references:

The polarization process for the transmission of colored stereo images, which has already been developed by at least two companies In addition to two cameras and two double screens, two signal paths are also required (magazine "elektronik newspaper ", volume 20, year 1982, issue No. 10, page 14). Also with all conventional photographic stereo processes two separate stereo images are recorded and, in the case of color stereo images, also separated reproduced (ABC der Optik, publisher: Karl Mütze together with Leonhard Foitzik, Wolfgang Krug and Günter Schreiber, Verlag Werner Dausien, Hanau / Main 1972, pages 681 to 682; Fachlexikon ABC Physik, Volume 2, Verlag Harry Deutsch, Zurich and Frankfurt am Main 1974 ·, pages 1454 to 1456; Brockhaus Encyclopedia in Twenty Volumes, 15. Volume, F. A. Brockhaus, Wiesbaden 1972, pages 453 to 454). The previous stereo attachments also serve to to generate two separate stereo images (ABC of optics, a, a. 0., pages 848 to 849; Brockhaus Encyclopedia, a. a. 0, page 454).

Only black and white stereo images can be reproduced in a single image using the subtractive coupling color method, e.g. B. was shown in the third program of German television in March 1982.

In addition to the polarization method, the projection of two colored stereo images can also be done using the additive coupling color method take place; at the one proposed by Louis LumieTe Distribution of the spectral colors ("Gomptes Rendus" magazine, volume 200, year 1935, pages 701 bis 704), however, there are considerable light losses (ABC of optics, op. Cit., Page 137).

State of the art criticism:

The previous color stereo image methods require one high expenditure on devices, recording material and operation. In the case of recording colored stereo images there are either synchronization problems or the picture format is halved.

As the angle between the two recording areas in general is not changed, is the coupling of accommodation and convergence that exists in natural vision repealed (ABC of optics, op. cit., page 682). Therefore, previous stereo films somehow seem fake (Herbert Schober: "Seeing", VEB Fachbuchverlag Leipzig 1964, page 486).

Task:

The invention is intended to improve the recording and transmission technology to simplify it considerably for colored stereo images.

Solution:

According to the invention, this object is achieved in that, with the aid of a new type of stereo attachment, which contains three or one deflecting mirror as well as two mutually complementary-colored filters and a beam splitter, two virtual colored stereo images are converted into two virtual mutually complementary-colored stereo images and are superimposed to form a virtual colored individual image. in order to record it as a single real single image, to record it if necessary, and to transmit it, whereby the reproduced single image contains all necessary color and stereo information and when viewing it through stereo glasses with corresponding one another

complementary colored glasses are perceived as colored and three-dimensional. In an even simpler way, two real colored stereo images can be projected one on top of the other with the help of two complementary colored filters, ie superimposed to form a real colored individual image, in order to record them as a single color image, to record them if necessary, and to transmit or reproduce them. The bundles of rays that are supposed to reach the left eye are passed through a color filter, which z. B. only lets through the long-wave part of the spectrum from hot to orange, while the bundles of rays that are supposed to reach the right eye go through a corresponding complementary-colored filter that allows the short-wave part of the spectrum from yellow to purple to pass. The two mutually complementary stereo images can then be superimposed to form a single image without loss of stereo information.
The overlay is, e.g. B. by appropriately adjusting the inclination and rotation of the beam splitter, made so that the two complementary colored stereo images are the same height and congruent for an object plane. For this object level, a color-correct image is created through additive color mixing, so that the stereo image process can be described as partially compatible. Superimposed on this image are the mutually complementary-colored stereo images of the other object planes, which only lead to a colored plastic image impression through binocular color mixing with the help of stereo glasses with corresponding mutually complementary-colored glasses, whereby normally all object colors are perceived in the correct color; only in the case of smaller partial objects of certain mixed colors, in particular some red tones, there is sometimes a competition of colors, so that the partial object is seen now orange, now dark red, depending on whether the impression of the left or right eye predominates. The decisive idea of the invention was that, in contrast to the polarization method, two superimposed on the viewer using a coupling color method

4-0 presented stereo images as a single color image

and can therefore also be recorded as a single image. B. h., The new idea of the invention is to have such a single image not only at the end of a stereo recording / playback device, but already before that, so that for the transmission and storage of colored stereo images apart from a simple stereo attachment only a single normal Recording / playback facility is required.
10

Achievable benefits:

While previously only black and white stereo images could be shown with a single color display device, Color stereo images can now also be reproduced. There are no costs for a second camera or for the recording of a second film or picture or video tape. There is only one signal path for transmission, so z. B. only a normal television channel required. All synchronization problems are eliminated, and that full image format is retained.

While the angle between the optical axes of the two cameras was previously mostly fixed, the two recording directions can now be continuously changed as required by rotating the beam splitter, i.e. the three-dimensional color image can be shifted further forwards or backwards relative to the reproduction plane. Therefore, the usual % coupling between accommodation and convergence can in principle

• restore.

30th

Description of exemplary embodiments:

Three exemplary embodiments are shown in the drawing . and are described in more detail below. It show figure

j and Figure 2 arrangements according to claim 1 and Figure 3 a

'} 35 arrangement according to claim 2.

: According to FIG. 1, both the two beams 1 and 2 coming from a distant object and the two 'Beams 3 and 4 emanating from a nearby object' after being deflected at mirrors 5 and 6 and 7 and passed of the color filter 8 or the associated complementary-colored

Filters 9 passed jointly into camera 11 by means of beam splitter 10.

The transmission takes place either from the camera 11 or from the recording device 12 by means of a simple transmission path to the display device 13, on which the viewer is presented with a real colored image, which he can see through stereo glasses with the colored glass 14 and the associated complementary colored glass 15 as well as with perceives both eyes 16 and 17 in color, plastic, the colored glass 14 corresponding to the color filter 8 and the complementary colored glass 15 corresponding to the complementary colored filter 9. The base is formed by the distance between the two mirrors 5 and 6. With usable beam diameters of 65 mm, the base has a minimum length of 130 mm. To reduce the size of the base, if a camera is used without a separate viewfinder, the mirror 5, the color filter 8 and the beam splitter 10 as well as the two mirrors 6 and 7 can be attached to two arms that can be pivoted around the optical axis of the camera 11 like a telescope . To enlarge the base in order to achieve a telestereoscopic effect, the distances between the mirror 5 and the beam splitter 10 and between the two mirrors 7 and 7 can be increased at will, either increasing the areas of the mirrors 5 and 6 accordingly or, as with the telescopic telescope, additional imaging: . Elements must be used.
FIG. 2 shows a simplified arrangement in which the base formed by the distance between the mirror 5 and the beam splitter 10 can correspond to the normal eye relief of 65 mm. Since the light paths of the beam 1 and 3 are 65 mm longer than the light paths of the beam 2 and, the distance to the foremost object should be at least about 2 m in this case, otherwise a certain size distortion occurs Fall can even be achieved with half the effort.
According to FIG. 3, films or images recorded according to previous stereo methods can be made with the aid of the projectors 18

_ta φ ^ t * »t · Il If

■ ·· ■ ··· till

and 19, in front of which the color filter 8 and the associated complementary colored filters 9 are located on the canvas 20 are superimposed and recorded by the camera 11.

Claims (2)

321907Q claims: 1. Stereo image process for the generation, recording and transmission of individual images that can be perceived in color, vividly, which can be viewed through stereo glasses with complementary colored lenses, characterized in that with the aid of a stereo attachment which essentially contains two _{mutually complementary-colored filters and a beam splitter, two virtual:} mutually complementary-colored stereo images are superimposed to form a virtual colored individual image in order to record it in color as a single real single image and transmit it or on a screen, in a movie, slide or photo. 2. Stereo image process for recording and transmitting individual images that can be perceived in color, vividly, characterized in that two real colored stereo images with the aid of two mutually complementary colored Filters are projected on top of each other in order to capture them in color as a single real single image and to transmitted or on a screen, in a film, f. play a slide or photo.