Question

Which of the following are the advantages of coding audiovisual objects?

1. It allows interaction with the content

2. It improves reusability and coding the content

3. It allows content-based scalability

1. 1 and 2 only
2. 1 and 3 only
3. 2 and 3 only
4. 1, 2 and 3

Answer 1

Correct Answer - Option 4 : 1, 2 and 3

Coding audiovisual objects offer the following advantages:

Interactivity: It allows interaction with different audiovisual objects. The interaction can be further classified as:

1) Client-Side interaction: Manipulating scene description and properties of audio-visual objects.

2) Client-Server interaction: This takes place in case a return channel is available.

Scalability:

Scalability refers to the ability to only decode a part of a bitstream and reconstruct images or image sequences with:

• Reduced decoder complexity (reduced quality)
• Reduced spatial resolution.
• Reduced temporal resolution.

​A scalable object is the one that has basic-quality information for presentation.

When enough bitrate or resources can be assigned, enhancement layers can be added for improving quality.

Reusability: Coding audiovisual objects helps to easily organize and manipulate individual components and reuse existing decoded objects.

Each type of content can be coded using the most effective algorithm.