Posts Tagged ‘video’
The special effects of movies has come to fruition with green screen studio and software technologies. Frequently, green screen and blue screen are referred to as chroma key, color-keying, or colour separation overlay. Whatever you name it, the main idea behind this art is the backround, which is normally green or blue screen, will be removed and replaced with another image or frame.
As frequently said, necessity is the creator of invention. It goes on to say that the origin of chroma keying was born from the yearning to have absolute control and convenience of filming on the stage. Chroma key nearly nulls the need to find an actual and existing location. Location shooting can be very difficult, like, the in a fantasy land, to the impossible, like a battle scene in deep space, made chroma key every film writer and post-production specialist’s most powrful tool.
The process starts with a foreground, which is the object being shot, and the background, that is, our green or blue screen. Some people may be asking why is that from every color out there are blue and green used. This is because most subjects are humans, and that peoples’ skin tones have lesser green or blue pigment in them. The main difference between people selecting blue versus green is really personal preference. Analog TV broadcasting uses blue screen. Blue is also preferable for videos that need to be darker like night scenes. In addition, when shooting for a scene that will be chromakeyed on water, blue screen would tend to work very well. For talent that are blonde, blue gives an easier post-production effort.
It is true that either green or blue can work fairly well in this day’s visual effect environment and the choice for which background color is generally opinion and sums up on deciding a background that will contrast itself from the subject, there are still issues to be contemplated that will lead to leaning towards one over the other. Since blue occurs more on typical costume designs like actresses’ jeans or even their eyes, green screen studios often tend to be the ideal choice. Even more so, green screen requires less lighting and because of that making it a perfect choice for outdoor shoots. Green has became the favorite in the movie world world because digital cameras record more detail in the green colored channel. Green channels are said to have a reduced level of noise. Our sight is also more responsive and sensitive to the green part of the visual spectrum in terms of judging brightness. Green also has a greater luminance value compared to blue. Luminance is the encoded black and white info including sharpness, brightness, and contrast within a video signal.
The transition from blue to green largely demonstrates the jump to video. Over the last decade, the usage of green screen sets has become the dominant in video special effects. Billion dollar 3D hits like Avatar, Star Wars, The Matrix, and many other films had heavy usage of green screen in their visual effects. Although it is almost always awkward and uncomfortable for actors, with great special effects crews minds and the advent of chromakey technology, it will surely be a hit.
Whether you are wanting to monitor your home or your business, a wireless hidden spy camera can really come in handy. Being able to SEE what happens when you are not there is priceless. Many wireless hidden spy cameras will allow you to log onto any computer with internet connection and be able to watch, real time, via your hidden wireless camera.
Things to look at About When Buying a Wireless Hidden Spy Camera:
1. Do you want black and white or color video from your hidden camera?
2. How will the light be in the room/area you will be covering with your hidden camera? If the room tends to be dark, be sure to get a wireless spy camera that does well in low-light conditions.
3. What kind of image quality do you want?
4. Does the hidden wireless camera comes with a receiver?
5. What radio frequency will your spy camera be using? You don’t want interference. Many nanny cams use a free radio frequency that will not have interference from your other wireless products in the house
6. What range of transmission does the wireless spy camera offer?
7. While wireless spy camera can be totally hidden, the most popular styles now are concealed as everyday household objects. These can be things like a clock, a smoke detector hidden camera, a mirror, an outlet, a radio, an alarm clock, and many more variations of hidden cameras. Pick something that fits in with your office and you will get better results.
By considering what seems to be the smaller details, you can be sure to get the hidden camera that will suit your needs best. Also, be sure to buy froma reputable source online. There is a lot of garbage out there and you don’t want to waste your money on a piece of junk. See all wireless hidden spy cameras here.
Jeremy Clarkson and Richard Hammond introduce the new Lotus Exige, specifically engineered for America. See Jeremy’s test drive and review of it here, as compared to the Apache helicopter – literally.
Don’t forget to hit ‘view in high quality’ at the bottom right of the video to get the best picture. Visit http://www.topgear.com for all the latest news and reviews.
Duration : 0:8:45
http://www.GetInsuranceFacts.com If motor insurance is what youre looking for, check out the top auto insurance myths in this video. It costs less to insure a cheaper car. Sometimes. If the car has a large engine, weighs a lot, or is an unusual model you might be paying more for your car insurance. Get quotes on motor insurance cheap, now at GetInsuranceFacts.com!
Duration : 0:0:42
The most violent game on the original Nintendo, besides Duck Hunt.
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