SU146766A1 - The way to eliminate the visibility of boundaries in a combined television image - Google Patents
The way to eliminate the visibility of boundaries in a combined television imageInfo
- Publication number
- SU146766A1 SU146766A1 SU738985A SU738985A SU146766A1 SU 146766 A1 SU146766 A1 SU 146766A1 SU 738985 A SU738985 A SU 738985A SU 738985 A SU738985 A SU 738985A SU 146766 A1 SU146766 A1 SU 146766A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- visibility
- boundaries
- eliminate
- way
- television image
- Prior art date
Links
Landscapes
- Studio Circuits (AREA)
Description
Наиболее частым дефектом в комбинированном телевизионном изображении, полученном методом электронной рирпроекции, вл етс заметность окантовок ,в месте стыка изображений переднего и заднего планов.The most frequent defect in the combined television image obtained by electronic keying is the visibility of the fringes at the junction of the foreground and background images.
Описываемый способ практически полностью устран ет указанный недостаток. Дл этого полосу пропускани выходного каскада комм татора выбирают достаточно узкой. Так как врем установлени фронтов выбросов составл ет несколько долей микросекунды, то выбросы коммутации на выходе коммутатора практически отсутствуют.The described method almost completely eliminates this drawback. For this, the bandwidth of the output stage of the switch is chosen rather narrow. Since the establishment time of the emission fronts is several fractions of a microsecond, there are practically no switch emissions at the switch output.
Чтобы не искажать изображени актера и фона, в выходных каскадах сигналов переднего и заднего плана осупдествл ют подъем частогных характеристик на высоких частотах. С этой целью могут быть применены, например, дифференцирующие цепочки.In order not to distort the images of the actor and the background, in the output stages of the foreground and background signals, the increase in the frequency characteristics at high frequencies is perceived. For this purpose, for example, differentiating chains can be applied.
Описанный способ позвол ет .простыми средствами получить качественное комбинированное изображение, не предъ вл повышенных требований к коммутатор -, сохранив в норме общую характеристику видеотракта.The described method makes it possible to obtain a high-quality combined image with simple means, without making any special demands on the switch — while maintaining the general characteristic of the video path normally.
Предмет изобретени Subject invention
Способ устранени заметности границ на комбинированном телевизионном изображении .в системе электронной рирпроекции, отличающийс тем, что в каналах актера и фона осуществл ют подъем высокочастотных компонентов сигнала, а после коммутации производ т соответствующую коррекцию полученного сигнала комбинированного изображени .The method of eliminating the visibility of boundaries on a combined television image in an electronic keying system, characterized in that the high-frequency components of the signal are lifted in the actor and background channels, and after switching, the corresponding signal of the combined image is corrected accordingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU738985A SU146766A1 (en) | 1961-07-21 | 1961-07-21 | The way to eliminate the visibility of boundaries in a combined television image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU738985A SU146766A1 (en) | 1961-07-21 | 1961-07-21 | The way to eliminate the visibility of boundaries in a combined television image |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU146766A1 true SU146766A1 (en) | 1961-11-30 |
Family
ID=48302195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU738985A SU146766A1 (en) | 1961-07-21 | 1961-07-21 | The way to eliminate the visibility of boundaries in a combined television image |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU146766A1 (en) |
-
1961
- 1961-07-21 SU SU738985A patent/SU146766A1/en active
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