SU118121A1 - Method to reduce the visibility of joints during panoramic projection - Google Patents
Method to reduce the visibility of joints during panoramic projectionInfo
- Publication number
- SU118121A1 SU118121A1 SU5822?9A SU582209A SU118121A1 SU 118121 A1 SU118121 A1 SU 118121A1 SU 582209 A SU582209 A SU 582209A SU 118121 A1 SU118121 A1 SU 118121A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- film
- visibility
- joints
- illumination
- reduce
- Prior art date
Links
Description
Известны способы уменьшени видимости стыков при панорамной кинопроекции, основанные на применении в кинопроекционном аппарате движущихс гребенок или других устройств, уменьшающих ркость изображени в области стыков. Недостаток подобных способов заключаетс в том, что при их использовании усложн етс кинопроекционна аппаратура.Methods are known for reducing the visibility of joints in panoramic projection based on the use of moving combs or other devices in the projection apparatus to reduce the brightness of the image in the area of the joints. A disadvantage of such methods is that when using them, the film projection apparatus becomes more complex.
В описываемом изобретении этот недостаток устранен тем, что уменьшение видимости стыков достигаетс в процессе печатани фильмокопий,: в св зи с чем устран етс необходимость в применении специальных устройств при кинопроекции. Полоска изображени , подлежаща проецированию с наложением на полоску соседнего изображени , подвергаетс засветке так, чтобы получаема на пленке плотность от засветки измен лась бы по ширине полоски, начина от минимальной величины до максимального значени плотности, прин того дл данного типа пленки, В результате засветки на изображение накладываетс оптический клин с минимальной прозрачностью на кра х кадров. Характер изменени плотности должен быть таким, чтобы суммарна ркость изображени в местах стыков, получающа с от сложени ркостей двух изображений , была бы посто нна и примерно равна ркости изображени , наход щегос между стыками. Допускаетс превышение ркости изображени в местах стыков относительно ркости основного изображени на 5-6%. Закон изменени плотности клина по его ширине выбираетс в зависимости от типа пленки.In the described invention, this disadvantage is eliminated by the fact that the reduction in the visibility of the joints is achieved in the process of printing of film prints: therefore, the need to use special devices for film projection is eliminated. The image strip to be projected overlaid on a strip of an adjacent image is exposed to illumination so that the resulting film density from the illumination varies across the width of the strip, starting from the minimum value to the maximum density value accepted for this type of film. As a result, the illumination on the image is superimposed by an optical wedge with minimal transparency at the edges of the frames. The nature of the density change should be such that the total brightness of the image at the joints, resulting from the addition of the strengths of the two images, is constant and approximately equal to the brightness of the image located between the joints. It is possible to exceed the image brightness at the joints relative to the brightness of the main image by 5-6%. The law of variation of the density of the wedge along its width is selected depending on the type of film.
Впечатывание оптического клина на пленку в местах стыка может быть произведено путем ее засветки через фигурную щель, установленную перед равномерно движущейс пленкой. Щель освещаетс равномерно , а изменение экспозиции по ширине полоски достигаетс изменением ширины щели. Форма засвечивающей щели выбираетс с учетом контрастности пленки, на которую производитс печать. Дл примера наThe imprint of an optical wedge on the film at the interface can be produced by exposing it through a shaped slot installed in front of a uniformly moving film. The slit is illuminated evenly, and a change in exposure across the width of the strip is achieved by varying the width of the slit. The shape of the illuminated slit is selected taking into account the contrast of the film on which printing is performed. For example on
№ 118121- 2 -No. 118121-2 -
фиг. 1 и 2 приведены: форма щели дл пленки с плотностью вуали До 0,25 и контрастностью (пленка типа ЦП-1, фиг. 1) и форма щели дл пленки с До 0,1 и f 3 (пленка типа ЦП-6, фиг. 2).FIG. Figures 1 and 2 show: the shape of the slit for a film with a density of a veil Up to 0.25 and contrast (a film like CPU-1, Fig. 1) and the shape of a slit for a film with Up to 0.1 and f 3 (a film like CPU-6, fig 2).
Предмет изобретени Subject invention
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU5822?9A SU118121A1 (en) | 1957-08-17 | 1957-08-17 | Method to reduce the visibility of joints during panoramic projection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU5822?9A SU118121A1 (en) | 1957-08-17 | 1957-08-17 | Method to reduce the visibility of joints during panoramic projection |
Publications (1)
Publication Number | Publication Date |
---|---|
SU118121A1 true SU118121A1 (en) | 1957-11-30 |
Family
ID=48390204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU5822?9A SU118121A1 (en) | 1957-08-17 | 1957-08-17 | Method to reduce the visibility of joints during panoramic projection |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU118121A1 (en) |
-
1957
- 1957-08-17 SU SU5822?9A patent/SU118121A1/en active
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