Talk:Compositing
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[edit] Comparison
Could we have a paragraph comparing the different software packages, where each of their strengths lies, which apps are used most often in professional applications etc., by somebody who knows this stuff? Thanks :-) Peter S. 15:47, 23 February 2006 (UTC)
Two problems: software changes very rapidly in this application, and discussion is impossible without comparing or at least mentioning proprietary products. Besides, all software uses essentially the same approach: 1) identify a color within a certain range of luminance and chrominance values (usually very narrow) and 2) replace every pixel within the target range with a pixel from exactly the same pixel grid location in another, designated image. Jim Stinson 18:54, 3 August 2007 (UTC)
[edit] merging articles
In the discussion page of chroma key, I wrote:
" Wait a minute: all these terms, in both film and video, relate to systems of compositing. That article needs work, though it's generally OK as far as it goes. Also, the static or traveling matte pre-digital film technology also used blue (or other color) background screens for compositing. I don't think we've yet found the top of the subject hierarchy here. Jim Stinson 03:35, 31 July 2007 (UTC)
Come to think of it, front and rear screen projection are forms of compositing, as are the glass shots used to combine action with painted set extensions on the original camera negative (The long road up to Ashley Wilkes' plantation in Gone With the Wind is a classic glass shot.) Jim Stinson 20:15, 31 July 2007 (UTC"
I might add: lumakeying was a method of compositing used, at least in amateur setups, in the analog era of video editing. It could replace black letter titles with other images, though poorly. And to take my above idea further, 3-d models (especially ceilings and other set extensions) are, to this day, hung in the top of the frame, close enough to the camera so that the "register" with the full-size BG and appear as part of it.
Bottom line: Compositing is the combining of disparate elements into a single image, by one of several methods, physical, analog, and digital. I think this article needs to be the master entry, with blue screen and chroma key et cetera as satellites.
Comments, please??
Jim Stinson 19:24, 1 August 2007 (UTC)
[edit] Brand new text
I completely replaced the existing article. If it is found acceptable, please
Edit it in the usual way.
Clean up the references (I am very weak on Wiki formatting).
For comparison, or in case my attempt is not acceptable, the original article is reproduced below the line. Jim Stinson 00:44, 9 August 2007 (UTC)
In visual effects post-production, compositing refers to creating new images or moving images by combining images from different sources – such as real-world digital video, film, synthetic 3-D imagery, 2-D animations, painted backdrops, digital still photographs, and text.
Compositing techniques, while almost exclusively digital today, can be achieved by many means. On-set in-camera effects have been utilized since the advent of film such as in the 1902 A Trip to the Moon. Optical compositing is the often complex process that requires an optical printer to photographically composite the elements of multiple images onto a single filmstrip. However, since the 1990s, digital techniques have almost completely replaced what was once the only method of post-production compositing.
Compositing is used extensively in modern film and television to achieve effects that otherwise would be impossible or not cost-efficient. One common use for compositing is scene or set extension which enables filmmakers to shoot on a relatively small set and create the impression of a significantly different location by adding additional surrounding and foreground imagery. A common tool to help facilitate composites is the bluescreen, a backdrop of a uniformly solid color--usually blue or green--that is placed behind an actor or object. During compositing, all areas of a frame with that color are removed and replaced, allowing the compositor to place the isolated image of the actor or object in front of a separately shot or synthetic background.
In feature film, movies are generally shot on 35mm film. For modern compositing, the film has to be digitized with a film scanner. It is then transferred to a computer where it can be edited. The compositors gather all the separately shot images and, with a compositing platform or software, combine elements of each image to achieve a resultant shot. As a result, a single frame of the finished shot may contain from anywhere between two to many hundreds of images from footage shot months or even years apart.
[edit] More illustrations
The new illustrations add a great deal. Can we find more? The reference books I used are still in copyright. I did find a Buster Keaton shot elsewhere in Wikipedia, but I haven't the brains to reduce and format it properly. Please help. Also, thanks for the formatting help already provided. Jim Stinson 19:30, 10 August 2007 (UTC)
[edit] Format fixes.
The sentence in the first paragraph:
(For compositing in graphic design and still photography, see Photomontage.)
should be up in the "signpost" paragraph above it, but I don't know how to do this. Jim Stinson 20:10, 11 August 2007 (UTC)
[edit] minor edits.
I've made several nit-picking edits to my earlier text, to improve syntax and clarity. Aside from a reference to the matte lines in the Playhouse still, I made no content edits. Jim Stinson 01:14, 22 October 2007 (UTC)
[edit] Fair use rationale for Image:Utv cso studio.jpg
Image:Utv cso studio.jpg is being used on this article. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in this Wikipedia article constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.
Please go to the image description page and edit it to include a fair use rationale. Using one of the templates at Wikipedia:Fair use rationale guideline is an easy way to insure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page.
If there is other fair use media, consider checking that you have specified the fair use rationale on the other images used on this page. Note that any fair use images lacking such an explanation can be deleted one week after being tagged, as described on criteria for speedy deletion. If you have any questions please ask them at the Media copyright questions page. Thank you.
BetacommandBot (talk) 05:13, 21 January 2008 (UTC)
[edit] Fair use rationale for Image:Keaton Playhouse 1921.jpg
Image:Keaton Playhouse 1921.jpg is being used on this article. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in this Wikipedia article constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.
Please go to the image description page and edit it to include a fair use rationale. Using one of the templates at Wikipedia:Fair use rationale guideline is an easy way to ensure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page.
If there is other fair use media, consider checking that you have specified the fair use rationale on the other images used on this page. Note that any fair use images lacking such an explanation can be deleted one week after being tagged, as described on criteria for speedy deletion. If you have any questions please ask them at the Media copyright questions page. Thank you.
BetacommandBot (talk) 23:10, 13 February 2008 (UTC)
[edit] Fair use rationale for Image:Sky captain Angelina Jolie.jpg
Image:Sky captain Angelina Jolie.jpg is being used on this article. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in this Wikipedia article constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.
Please go to the image description page and edit it to include a fair use rationale. Using one of the templates at Wikipedia:Fair use rationale guideline is an easy way to ensure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page.
If there is other fair use media, consider checking that you have specified the fair use rationale on the other images used on this page. Note that any fair use images lacking such an explanation can be deleted one week after being tagged, as described on criteria for speedy deletion. If you have any questions please ask them at the Media copyright questions page. Thank you.
BetacommandBot (talk) 05:05, 18 February 2008 (UTC)
Okay, so we're out of illustrations except for the poor-quality shot of the guy in front of a blue screen and the drawings I made to illustrate analog matting. Can anybody supply anything useful here?Jim Stinson (talk) 00:49, 12 March 2008 (UTC)
