3D Animation And Chroma Key Technology

3D Animation And Chroma Key Technology

3D Animation And Chroma Key Technology

Chroma key is the technology whereby a live actor is filmed in front of a blue or inexperienced screen, and then the blue or green screen is dropped out to be replaced by whatever backdrop the compositor wishes. There are quite some blue and green screens out there, but you can build your own low budget version by hanging a blue or green sheet and filming in front of that.Another cheap resolution is to purchase linoleum that may be hung from a ceiling, dropped to the floor, and extended out along the floor. This provides a smooth transition from back wall to floor that, when being painted with a chroma key blue or inexperienced, works well as a tiny blue screen. Remember to keep the blue screen on the ground clean, as any dusty footprints build for very difficult chroma keying.Another type of compositing is to position digital characters into real footage. To do this, animation clips should be rendered with an alpha channel. Alpha channels are black-and-white channels that outline which components of a picture are to be seen and which are to be dropped out. Alpha channels can be embedded at intervals the clip or rendered as a separate clip. The key is to create sure your 3D application knows you wish to create an alpha channel, as making an attempt to knock out a black background from a clip without an alpha channel is next to impossible.There are as many compositing software packages as there are 3D packages. The selection is kind of varied and will increase yearly. Adobe's AfterEffects is probably the foremost standard shopper-level compositing package. However, Adobe's Premiere and Apple's Final Cut Professional are sensible selections for compositing. Owning one of those software packages could be a good idea, whether or not you do not arrange to use real footage with digital files.Compositing can conjointly be used to composite several digital files together. Completely different 3D packages do totally different functions better than others. Often times, the simplest 3D comes are created in a selection of packages, and then the results are composited along into one animation.

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