شاشة الخضراء(اضغط طويلا=أزرق)

شاشة خضراء تسمح لك بجعل هذا اللون شفاف .تقنية مستعملة في برنامج توقعات الطقس.

ما هي شاشة خضراء ؟

تقنية الشاشة الخضراء هي أساس الآثار في كل شيء من أحدث الافلام في هوليوود, لتوقعات الطقس.

فكرة بسيطة .

إذا اطلقت النار على الفيديو مع خلفية ملونة واحدة ( غالبا ما تستخدم اللون الأزرق أو الأخضر) شاشة خضراء تسمح لك بجعل هذا اللون شفاف - مع دمج الفيديو بأي مقطع فيديو آخر ، رسم أو صورة ثابتة

انها بسيطة يمكنك نقل نفسك إلى القمر ، تظهر في الفيلم المفضل لديك ، أو تقديم عرض جنبا إلى جنب مع كل الحقائق و الأرقام ذات الصلة ...

THIS APP DO NOT USe THE CAMERA OR Keying GREEN SCREEN OUT OF PHOTOS!

This app can be used as a small and portable green screen.

*What is Keying?

Keying is the process of isolating a single color or brightness value in an electronic image and using software to make that value transparent, allowing another image to show through the affected areas. Luminance keying, or lumakeying, is the process of keying out a brightness value or range, like black or white. Luminance keys are often used for applying mattes. Color keying, or chromakeying, identifies a specific color to remove.

*Why Green?

Many people use the terms chromakeying and greenscreening interchangeably, but the principle that powers chrominance keying is not limited to the green parts of the spectrum. In the visual effects world of Hollywood, blue screens are far more common than green. In fact, you can key out any color; red, yellow, purple or pink, blue and yes, green. So why is that odd and ugly shade of green the hue of choice for television and video? The biggest factor is contrast. In order to isolate one area from the rest, the background color must be distinctly different. Bright green beats blue partially because it is not a color commonly worn by talent. Any clothing that matches the background too closely will also key out, punching a hole in your subject’s body, or making him invisible altogether. We narrowly escaped a chromakey crisis a few years ago when I was working at a Northern California TV station. One St. Patrick’s Day our wacky weatherman showed up to work dressed head-to-toe in a bright green leprechaun suit. Fortunately, we quickly pointed out the flaw in his logic and he was able to find a change of clothes before it was time to go live.

*What is Green Screen?

Green screen technology is the basis of the effects seen in everything from the latest Hollywood blockbusters to the weather forecast. The idea is simple. If you shoot a video with a single coloured backdrop (blue or green is often used) Green Screen allows you to make that colour transparent - replacing it with any other video clip, graphic or still image.

With green screen, it's simple to superimpose anything or anyone into any shot. You can transport yourself to the moon, appear in your favourite film, or make a presentation along with all the relevant facts and figures...

You can use any single colour, flat object as a screen,

http://www.wikihow.com/Use-a-Green-Screen

Features:

* Green / Blue Screens to choose.

* Tracking Points.