Chroma Key (CK)
Chroma Key (CK) – a) A method of combining two video images. The most common example of chroma keying is the news weather person standing in front of a weather map. The details of the process are, a camera is pointed at the weather person who is standing in front of a bright blue or green background. The weather person and bright-blue or green background image is fed along with the image of the weather map into a computing device. Wherever the computing device sees the bright-blue or green background, it displays the weather map. Wherever the computing device does not see bright blue or green, it shows the weather person. b) A process for controlling the overlay of one video image over another, the areas of overlay being defined by a specific color or chrominance in one of the images. More versatility is available when working in the digital mode than in the analog since the color to define the effective mask can be more precisely specified. Effective use of chroma key frequently required high definition in the color image and, therefore, full bandwidth R, G, B is preferred. Linear key provides an alternate method for control of the overlay. c) Chroma keying is the process of controlling the overlay of one video image over another. The overlay is defined by a specific color or chrominance in one of the images.
Source: http://download.tek.com/secure/25W_15215_1.pdf?nvb=20151220132843&nva=20151220133343&token=0538ce9690041d6978723
Web site to visit: http://www.tek.com/
Author of the text: http://www.tek.com/
If you are the author of the text above and you not agree to share your knowledge for teaching, research, scholarship (for fair use as indicated in the United States copyrigh low) please send us an e-mail and we will remove your text quickly. Fair use is a limitation and exception to the exclusive right granted by copyright law to the author of a creative work. In United States copyright law, fair use is a doctrine that permits limited use of copyrighted material without acquiring permission from the rights holders. Examples of fair use include commentary, search engines, criticism, news reporting, research, teaching, library archiving and scholarship. It provides for the legal, unlicensed citation or incorporation of copyrighted material in another author's work under a four-factor balancing test. (source: http://en.wikipedia.org/wiki/Fair_use)
The information of medicine and health contained in the site are of a general nature and purpose which is purely informative and for this reason may not replace in any case, the council of a doctor or a qualified entity legally to the profession.
The following texts are the property of their respective authors and we thank them for giving us the opportunity to share for free to students, teachers and users of the Web their texts will used only for illustrative educational and scientific purposes only.
All the information in our site are given for nonprofit educational purposes
The information of medicine and health contained in the site are of a general nature and purpose which is purely informative and for this reason may not replace in any case, the council of a doctor or a qualified entity legally to the profession.
www.riassuntini.com