Computer-Aided lIIustration Questions

Below are questions to test your knowledge and understanding of Illustration Techniques.

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Questions

Question 1

Question 2

Question 3

Question 1

Animation techniques are used in the production of animated movies. a. Describe eight illustration and/or lighting techniques that can be used to add realism to animated movies or video games. (8 marks)

Answers

Materials could be applied to enhance the realism of environment designs
Texture mapping would allow materials to be scaled correctly within environments to ensure they worked with the size of items such as buildings etc within the setting
Bump mapping could be used to enhance materials/character costumes/surfaces to add more texture using rough, variable and irregular surfaces
Reflective surfaces could be added for realism by reflecting the scene or individual elements within the environment
Additional highlights (Specularity) added to glossy/metallic/reflective surfaces to enhance reflective material and/or emphasise direction of lighting
Ambient mood and feeling can be produced by light and colour schemes to create a positive ambience within the environment
They can include air-born particles, for example dust/smoke etc, within an environment (volumetrics)
Volumetrics could be added to create added realism to water features showing the depth and volume of these features
Directional lighting could be used to replicate directional sunlight coming through or casting daylight throughout scenes and environments
Displacement mapping that creates 3D variation in the surface to add realism
Specularity could be added to create rings of light/lens flair for a unique effect
Ambient light could be used to produce an overall light with no specific direction to ensure all areas have general illumination
Spotlights could be used in scenes where a specific feature/character has to be emphasised
Area Lights could be used to create internal lights within scenes to ensure the type of lighting fits the styling/ interior of the design
Point Lights could be used to create internal lights within scenes to ensure the type of lighting fits the styling/ interior of the design
Image based lighting could be used to simulate how the surrounding environment affects the lighting of objects
Images/lighting of real-life environments can be translated to the movie/game to ensure the lighting within the environment is as accurate as possible (IBL)
HDRI will ensure the range of shade/ luminosity is accurate to how real/natural lighting would affect darker/lighter areas or adjustment of light within scenes or environments

Question 2

An interior designer is producing CAD models for the hotel rooms, as shown below. a. Name two computer-aided illustration techniques and describe how they would be used to enhance the CAD model of the room interior. (4 marks)b. Name two computer-aided lighting types and describe how they would be used to enhance the model of the room interior. (4 marks)

Answers

Materials could be applied to furniture/walls/surfaces to enhance the realism of the design and demonstrate what it could look like
Texture mapping could be applied to the flooring or texture finishes to ensure the scale of chosen materials is suitable for the environment
Bump mapping could be used on features such as the rug or bedding to give it more depth/texture/ make it appear more realistic/appropriate for the item
Reflections could be added for realism by reflecting the scene or individual elements features within the scene
Additional highlights added to gloss/metallic/reflective surfaces to enhance reflective material and emphasise the direction of lighting using specularity
Ambient mood/feeling produced by light/colour schemes to create a welcoming/positive environment
Volumetrics could create the inclusion of airborne particles (for example, dust) within the volume of the room.
Use of a blurred image to create depth of field for the landscape behind the window to emphasise the scale/distance of the outdoor area

Directional Lighting could be used to provide directional sunlight coming through the window to show how the external environment/ position of the building would affect the lighting in the room
Ambient light could be used to produce an overall light with no specific direction to ensure all areas have general illumination
Spotlight/Point Light/Local Light could be used to show how the bedside wall lights would illuminate the area immediately below or above the light shade or produce cones of light
Spotlight/Point Light/Local Light could be used/has been used to show how the ceiling spotlights would illuminate the walls
Area Lights could be used to create an area of directional light emitting from the window
Image-Based Lighting/IBL could be used to simulate how the surrounding environment affects the lighting of objects
HDRI could be added to change the balance of the lighting to improve clarity

Question 3

The company have produced the rendered illustration, generated from a CAD model. a. Describe how each of the illustration techniques listed have been used in the production of the rendered illustration. (6 marks)

Volumetrics
Bump Mapping
Image Based Lighting (IBL)

Answers

Volumetrics could be added to create a realistic representation of the water within the swimming pool.
Volumetrics show the clarity in the water/depth of the pool/realistic distortion of the tile pattern
Volumetrics shows the distortion of light in the water
Volumetrics give the impression of mist/fog/haziness in the distance (before the last line of trees)
Bump mapping is used in the woodwork features to enhance the definition of the grain texture found within this material.
Bump mapping is used in the rocks to show the rough texture found within this material.
Bump mapping is used in the furniture fabric to show they are soft furnishings
Bump mapping is used within the tiles features to enhance the definition of the texture found within this material.
Bump mapping is used in the black marble/highly reflective material around the pool to show it is smooth.
Bump mapping is used within the grass/leaves to add depth/definition to the texture of the foliage.
IBL Realistic scene capturing the lighting of the environment or the effects of light on the environment.
IBL Reflections captured in the water of the surrounding environment.
IBL Reflections captured in the windows from the surrounding area/sited environment.

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