Visual Effects (VFX)
- 1. Presented By:- AVINASH GAUTAM I.T. Engineer
- 2. VISUAL EFFECTS ( VFX ) Visual effects are the various processes by which imagery is created and/or manipulated outside the context of a live action shot. Visual effects involve the integration of live-action footage and generated imagery to create environments which look realistic which is impossible to capture on film. Visual effects can be categorize into : Compositing, Matte Painting, Animation, Lighting, Texture, Rigging
- 3. COMPUTER GENERATED IMAGERY It is the application of computer graphics to create images in art, printed media, video games, films, television programs, commercials, and simulators. The visual scenes may be dynamic or static, and may be two- dimensional (2D), though the term "CGI" is most commonly used to refer to 3D computer graphics used for creating scenes or special effects in films and television. Computer graphics software is used to make computer-generated imagery for films, professional-grade films, games, and fine art from their home computers.
- 4. EXAMPLE
- 5. It is the combining of visual elements from separate sources into single image, often to create the illusion that all those elements are parts of the same scene. Compositing is taking real-life elements with Computer Generated (CG) Element and putting them together - so they seem like they were shot together. Live-action shooting for compositing is variously called Chroma key", "blue screen", "green screen" and other names. COMPOSITING
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- 7. CHROMA KEYING Chroma keying is a technique used for combining two frames or images by replacing a color. It is often used in film industry to replace a scene's background by using a blue or green screen as the initial background and placing the actor in the foreground. Chroma key is also known as color keying and color separation overlay; it is also commonly called blue screen or green screen.
- 8. EXAMPLE
- 9. WHY USE ONLY GREEN AND BLUE COLOR Key tool works with other colors, but blue and green work the best because the digital images use Red, Green and Blue channels to make up the image. Red is not very good because actors skin tones often have a lot of red. In the compositing software(such as Adobe After Effects, The Foundry Nuke and many others), there is a tool call “key”. What this does is tells the computer all the pixel that is this kind of green or blue should be treated as transparent. The keying tool will find all the pixels that is the same kind of green and then treat those pixels as transparent.
- 10. EXAMPLE
- 11. MOTION TRACKING When you import a file to after effects, your computer has no idea what is going on in the footage, it has no concept of motion direction unless you define these things. What MOTION TRACKING does is follow points that you designate through the tracking tools and extrapolate the motion of that point across the time that the point is in view. You can track the position, scale and rotation.
- 12. EXAMPLE
- 13. SOFTWARE USED in VFX Autodesk max Autodesk Maya After effects Nuke Blender Mocha Cinema 4D Cloud City Engine Dx Studio Gelato Light wave 3D Micro station Real Flow V-Ray Wings 3D Yafray ETC……. • Etc…………..
- 14. Past: Hardware Based IT technology Conventional technology developed for hardware systems. CHANGES IN WORLD IT MARKET The old IT market relied on Hardware and Software Technology. Today, with advent of new media, the industry is centered on digital content such as films, music, games and much more. Present: Software Based IT Technology Portable electronic devices Produced a need of new software and hardware. Future: Digital Content We will evolve into industry Centered on films, Animation and games.
- 15. DRIVING FORCE of DIGITAL CONTENT Amazing visual effects are possible with this Technology. Advancement in movies, television, advertising, music, games and much more.
- 16. COMPUTER GRAPHICS MARKET GRAPH
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