What is Computer Facial Animation?

What is Computer Facial Animation?

Computer Facial Animation

This animation is primarily an area of computer graphics which encloses methods and techniques for generating and animating images.

The importance of human faces in verbal and non-verbal communication and advances in computer graphics hardware and software has caused considerable scientific, technological, and artistic interests in computer facial animation.

Computer Facial Animation

This animation is primarily an area of computer graphics which encloses methods and techniques for generating and animating images.

The importance of human faces in verbal and non-verbal communication and advances in computer graphics hardware and software has caused considerable scientific, technological, and artistic interests in computer facial animation.

Techniques for Generating Facial Animation Data

The generation of facial animation data can be approached in different ways:

  1. Marker-Based Motion capture on points or marks on the face of a performer
  2. Markerless Motion Capture Techniques

1. Marker-Based Motion Capture

Motion capture uses cameras placed around a subject. The subject is fitted either with reflectors that precisely determine the subject’s place in the area.

However, miniaturization and other advancements have made motion capture a viable tool for computer facial animation.

Facial motion capture used extensively in Polar Express by Image works where hundreds of motion points were achieved.

This film was very accomplished, and while it attempted to recreate realism, it was criticized for having fallen in the ‘uncanny valley’, the realm where animation realism is sufficient for human recognition, to move the emotional message but where the characters fail to be perceived as real.

The main difficulties of motion capture are the quality of the data which may include vibration as well as the retargeting of the geometry of the points.

2. Markerless Motion Capture Techniques

Markerless motion capture aims at simplifying the motion capture process by avoiding encumbering the performer with markers.

Several techniques came out recently leveraging different sensors, among which standard video cameras, Kinect and depth sensors or other structured-light based devices.

Systems based on structured light may achieve real-time performance without the use of any markers using a high speed structured light scanner.

The system is based on a sound offline face tracking stage which trains the system with different facial expressions.


Click on Below Video : Basic of Character Face Rigging

Applying Facial Animation to a Character

The main techniques used to implement Facial Animation to a Role:

  1. Morph Targets Animation
  2. Bone Driven Animation
  3. Texture-Based Animation
  4. Physiological Models.

1. Morph Targets Animation

Morph targets based systems offer a fast playback as well as a high degree of fidelity of expressions.

The technique involves modelling portions of the face mesh to approximate expressions and then to blend the different sub-meshes, known as morph targets.

Perhaps the most accomplished character using this technique was Gollum, from The Lord of the Rings.

A new technology departing from the traditional techniques begins to develop, such as Curve Controlled Modeling that emphasizes the modelling of the movement of a 3D object instead of the conventional modelling of the static shape.

2. Bone Driven Animation

A bone driven animation is very broadly used in games.

The bones setup can vary between few bones to close to a hundred to allow all subtle facial expressions.

The main advantages of bone driven animation are that the same animation can be used for non-identical characters as long as the morphology of their faces is similar, and secondly, they do not require loading in memory all the Morph target data.

3D game engines most widely support the bone driven the animation.

Bone driven animation can be used both in 2D and 3D animation.

3. Texture-Based Animation

The texture-based animation uses pixel color to create the animation on the character face.

The 2D facial animation is commonly based on the transformation of images, including both photos from still sequences of video and photography.

Image morphing is an ability which allows in-between transitional images to be generated between a pair of target still between frames from series of video.

In 3D animation texture, based animation can be achieved by animating the composition itself.

4. Physiological Models

Physiological models, such as skeletal muscle systems and physically based head models form another approach to modelling the head and face.

Here, the physical and anatomical characteristics of bones, tissues, and skin are simulated to provide a realistic appearance. Such methods can be potent for creating realism, but the complexity of facial structures make them computationally expensive and challenging to develop.

Considering the effectiveness of parameterized models for communicative purposes.

Kshitij Vivaan (Training Partner of MAAC Ahmadabad Satellite Road) offers career courses in Animation, VFX, graphics, web designing & gaming for students from different cities such as Kutch and Bhuj. MAAC helps these students get the best job placements according to their skills and talents to get the best start to their Professional Careers. One of our Maac Student (Chirayu Shah) creates this Maac Blog.

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Visual Special Effects Techniques

Visual Special Effects Techniques

Visual Special Effects Techniques in VFX

Visual special effects techniques are illusions used in the television, film, video game, theatre and simulator industries to simulate the imagined events in a virtual world.

Special effects are divided into the categories of optical effects and mechanical effects.

There are 7 Visual Special Effects Techniques, which are as below

Visual Special Effects Techniques


Click on Below Video : 7 Movies Before and After Special Effects

Top 7 Visual Special Effects Techniques in VFX

1. Bullet Time

Bullet time is a visual effect or visual impression of detaching the time and space of a camera from that of its visible subject.

It is a depth-enhanced simulation of variable-speed action and performance seen in films, broadcast advertisements, and real-time graphics within video games and other specialized media.

It is characterized both by its total transformation of time and space.

Technical and historical variations of this effect have been referred to as time slicing, view morphing, temps mort and virtual cinematography.

2. Computer Generated Imagery

CGI is the requisition of Computer Graphics to generate images in art, printed media, films, video games, shorts, television programs, videos, commercials.

Additionally, the use of 2D CGI is often mistakenly referred to as “traditional animation”, most often in the case when dedicated animation software such as Adobe Flash is not used.

3. Motion Control Photography

Motion control photography is an approach used in motion photography which enables precise control of, & optionally allows repetition of, camera movements.

It can be used to smooth individual effects in photography.

The process can involve filming several elements using the same camera motion, and then composite the components into a single image.

Also, Motion control camera rigs are used in photography with or without compositing.

4. Digital Compositing

Digital compositing is the process of digitally assembling the multiple images to make a final image, motion pictures or screen display.

It is the digital analogue of optical film compositing.

Compositing is the combining of optical, elements from varies sources into images, often to make the phantom that all those elements are parts of the same scene.

Live-action shooting for compositing is variously called “chroma key”, “blue screen”, “green screen” and other names. Today, most, though not all, compositing is achieved through digital image manipulation.

5. Virtual Cinematography

The virtual cinematography is the set of cinematographic techniques executed in a graphics situation.

These include a wide variety of subjects like photographing real objects, often with stereo or multi-camera setup, to recreate them as three-dimensional objects and algorithms for automated creation of real and simulated camera angles.

6. Matte Painting

A matte painting is a dyed representation of a set, landscape, or distant location which allows movie makers to create the illusion of an environment that is not present at the filming location.

Matte painters and Film technicians used various techniques to combine a matte-painted image with live-action footage.

7. Stop Motion Animation

Stop motion is an animation technique that physically manipulates an object so that it appears to move on its own.

Stop-motion animation using plasticize is called clay animation.

Not all stop-motion requires figures or models, and many stop-motion films can involve using humans, household appliances and other things for comedic effect.

Stop motion can also similarly use sequential drawing to traditional animation, such as a flip book.

Stop action using humans is sometimes referred to as pixilation animation.

Click on Link: Basic of Stop Motion Using After Effect

MAAC encourages students to make a creative Animation. A student from different parts of the cities such as Barmer and Jaisalmer joins Maac Animation Courses to learn various Animation Courses.

Kshitij Vivaan (Training Partner of MAAC Ahmadabad C.G Road ) offers career courses in Animation, VFX, graphics, web designing & gaming for students from different cities such as Amreli and Rajkot. MAAC helps these students get the best job placements according to their skills and talents to get the best start to their Professional Careers. One of our Maac Student (Chirayu Shah) creates this Maac Blog.

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Kshitij Vivaan (Training Partner of MAAC Ahmadabad Satellite Road) offers career courses in Animation, VFX, graphics, web designing & gaming for students from different cities such as Bhavnagar and Jamnagar. MAAC helps these students get the best job placements according to their skills and talents to get the best start to their Professional Careers. One of our Maac Student (Chirayu Shah) creates this Maac Blog.

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What is Matte Painting?

What is Matte Painting?

What is Matte Painting?

matte painting is a painted representation of a landscape, set or distant location that allows filmmakers to create the illusion of an environment that is not present at the filming location.

Steps to Create Matte Paint in Photoshop

We can draw a sketch that we imagine in our mind.

Sketching in 3 Ways

  1. Conceptual
  2. Analytical
  3. Observation

We can combine different types of backgrounds in one scene or image.

After that, we have to set proper lighting and perspective for different images.

Main and the important point is that we have to make matte paint of meaningful and proper effective image.

Click on Below Link: Basic Matte Painting Movie 300 Style

Where is Matte Painting Used?

Historically, matte painters and film technicians have used various techniques to combine a matte-painted image with live-action footage.

At its best, depending on the skill levels of the artists and technicians, the effect is seamless and creates environments that would otherwise be impossible or expensive to film.

In the scenes the painting part is static, and movements are integrated into it.

Matte painting is one of the oldest techniques in the visual effects industry and one of the most widely applied techniques as well. The concept of matte painting is simple: “Use one or few paintings to replace a background.”

Although the concept is so simple, the technique of matte painting is quite skillful and artistically demanding because the paintings used to replace background have to be realistic enough and support the film style so the audiences can think it’s a real background.

Matte Painting is Used in Different Areas

 

Matte Painting

Kshitij Vivaan (Training Partner of MAAC Ahmadabad Satellite Road) offers career courses in Animation, VFX, graphics, web designing & gaming for students from different cities such as Gandhinagar and Rajkot. MAAC helps these students get the best job placements according to their skills and talents to get the best start to their Professional Careers. One of our Maac Student (Chirayu Shah) creates this Maac Blog.

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Kshitij Vivaan (Training Partner of MAAC Ahmadabad C.G Road) offers career courses in Animation, VFX, graphics, web designing & gaming for students from different cities such as Ahmedabad. MAAC helps these students get the best job placements according to their skills and talents to get the best start to their Professional Careers.

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