AUTHORING &RENDERINGTOOL

 

 

Multimedia Authoring
Multimedia authoring involves collating, structuring and presenting in nformation in the form of digital multimedia, which can incorprate text, and still and moving images
Multimedia Authoring Tools
:- A program that heps you write hypertext or multimedia applications.
:- Authoring tools uaually enable you to create a final applicationmerely by linking together objects such as paragraph of text, an illustration, or a song

Most authoring system also support a scripting language for more sophisticated applications
:- Authoring tools require less tecthnical knowledge to master and are used exclusively for applications that present a mixture of textrual, grapical and audio data
# Two basic features:
- Ability to create and edit a product
- Presentation scheme for delivering product
:- Four main perspectives in multimedia authoring tool:
Tools (any software package that could author multimedia product)
Product ( the result of combining all multimedia components)

 

 

Developer ( designers, programers and multimedia authors)
End user ( coustmer or viewer)
:- There are three types of authoring tool

1. which are divided by style in which the multimedia presentation is created.
- Card based
- Time based
- Icon based
Types of Multimedia Authoring Tools

1. Card-based authoring tools
:- Using a card stack metaphor
:- Cards are developed that have different elements associated with them and are put in stacks

·      You can link the cards by allowing the user to click the buttons or other elements and jump to different card in stack
For example:-
Hypercard
Toolbook
HyperNext studio
Hyper studio
Phyton card
Revolution

 

 

.                  2           Time Based Authoring Tool Example:-
                                  Director
                                   Flash

 

3            Icon Based Authoring Tools
 With icon-based programs, you use symbol in flowchart scheme
 Each icon represents a particular event
For example, the wait icon stops the process until the user click the mouse button or presses a key or specific amount of time passes
An advantage of icon based programs is that you can easily how is little is structure that is the flow of a program and especially the branching
Icon Based Authoring Tools Example
Macromedia Authorware
IconAuthor

 

What is rendering?

The term rendering defines the automatic process of generating digital images from three-dimensional models, by means of a special software. These images simulate project or 3D model’s photorealistic environments, materials, lights and objects.

Particularly, rendering is a computer-generated image following three-dimensional modelling based on project data. The geometric model created is coated with images (textures) and colours, which are identical to real materials, and that can be illuminated with light sources reproducing natural or artificial ones.

Types of Rendering

Rendering Real TimeReal-time rendering is mainly used in gaming and interactive graphics, where images are calculated from 3D information at a very fast pace. As a result, dedicated graphics hardware have improved the performance of real-time rendering ensuring rapid image processing.

Rendering offlineOffline rendering is a technique mainly used in situations where the need for processing speed is lower. Visual effects work where photorealism needs to be at highest standard possible. There is no unpredictability, unlike real time.

 

offline rendering

offline rendering refers to anything where the frames are rendered to an image format, and the images are displayed later either as a still, or a sequence of images (e.g. 24 frames make up 1 second of pre-rendered video). Good examples of offline renderers are Mental Ray, VRay

 

Render visualization

Rendering: visualization techniques

Z-Buffer

Scan line

Ray casting

Ray tracing

Radiosity

 

Authoring and publishing

 

Organizations produce vast amounts of content to communicate with customers and prospects. This content can be text, visual and audio visual information. Authoring tools help in creating such rich media content and documents. Publishing tools help in disseminating content to the target audience. Authoring tools are also part of LMS(Learning management system), wherein they help in creating course content and eLearning material.

Learn how Authoring and Publishing tools work and how to choose the right Authoring software.

 

 

Image Authoring and rendering texture resolution
Rendering textures onto Vignette (The Vignette effect darkens the edges of an image, leaving the center of the image brighter. In real-world photography, this effect is caused by thick or stacked filters, secondary lenses, and improper lens hoods. Use the effect for artistic effect, such as to draw focus to the center of an image)
objects in Image Authoring and Image Rendering depends on Image Authoring and rendering texture  an accurate relationship between the resolution of the repeatable texture and the object's size. If the texture resolution and the object size are set accurately, the renderer ensures a perfect match.

 

 

Determine the texture resolution:

The texture resolution is expressed in pixels per inch (ppi).

Set the object size: When authoring objects with the Vignette Authoring Tool in IA for applying textures, it is necessary to specify an appropriate object size.

3D scenes: Set the scale for the entire scene before importing the 3D data into the object hierarchy

2D scenes: A good sense of the actual size of the objects in the scene is required for accurate authoring.

Flowline objects: For both 2D and 3D scenes, set the Overall Size (in inches) of a part (object) in the Texture Tool on the Flowline Page.

Rendering: Image Authoring and the Image Rendering server applies the repeatable texture to the object

 

Thank you

Aparna

Assistant Professor

Graphics&Animation

Kurukshetra university kurukshetra