Talk on Colours – Part02

Hello everyone,

We were talking about a very very wonderful subject – the colours – since the last post. Now we will continue our discussion further.

So, the question arrived earlier was – How do we actually see?
 For us to see anything, it needs at-least these four things.
  1. A light source
  2. An object to look at
  3. The Eye and …
  4. (We will talk about the 4th in just a minute)
The first thing needed is a light source, from which some amount of light is emitted.

Secondly, an object (of course!) to look at has to be there. Continue reading

Fundamentals of Rendering: 03_Resolution

Welcome to this third post regarding ‘Fundamentals of Rendering’. As you know, in the last few posts we have already talked about basics of rendering, render engines and 3d to 2d conversion. And now we will talk about ‘Resolution’.
If you remember our last discussion, its now clear that at the time of rendering, software converts all the 3d vector data in to 2d raster data, just like the real camera takes the projection of the real 3d world on a 2d film. Continue reading

Fundamentals of Rendering: 02_ Converting 3d into 2d

camera taking a photographHi! As in the last post, I made an introduction to rendering and we talked about ‘Engines’. Now in this post, we will talk about a process of converting the 3d data into 2d.

Let’s Talk about some output devices first. Like the computer screen, monitors, printers, projectors, etc. If you have observed them closely, non of these device produce actual 3d output. Our PC screen is flat, the printer paper is flat, even the projector projects on a flat background. When we see a film or read a printed paper, we see only the surface of the screen or paper. We don’t actually consider the thickness. That means all of these devices are based on 2d projection system, not on 3d. Continue reading

Fundamentals of Rendering: 01_Introduction

Hi! As mentioned in the last post, here I am starting now the discussion on ‘Rendering’:

A typical animation film production lineup consists of three main parts, as everybody knows, namely pre-production, production and post production. In todays discussion, we are going to talk about one of the very important section of the Production part – that is ‘Rendering‘. Once the modeling, texturing, rigging, lighting and animation work is over the rendering phase starts.

As we already know, a video film is made up of several still pictures or images. Each such picture is in conjunction with the next one. That means all the images are in a sequential order. In technical language, each of these continuous image, is called a ‘Frame‘. If we start looking at all those frames quickly enough, then it makes an illusion to our eyes. Instead of identifying any single frame separately, we ‘think’ that its a single, continuous visual. That means, this is nothing but ‘fooling’ our eyes or rather brain, to be precise. Isn’t it funny. Continue reading

CG Training

I am in process of updating my blog. In 2003 and 2004, my 2 articles on 3d computer graphics, were published in local Marathi news paper (called ‘सकाळ’). I received huge response and replies from readers. Few more articles are about to be published very soon. So, I am going to add several 3d Graphics related training material on the blog in conjunction with the paper articles, in next few months. The sequence and selection of the training topics, will be based on public and reader’s replies, comments and feedback.

The topics will mainly include 3d Computer graphics, animation project handling, 3d software ‘blender’ training materials.

English Version of my first article – 18 Nov 2003

 Following is the English version of my first article, originally published in ‘Sakal’ Daily News paper, Pune, on 18 Nov 2003, in Marathi. The translation is done by my wife ‘Shruti’. I decided to post this English translation, after I received few responses from some readers and friends, asking for the same. Please leave your comments and suggestions.

Computer Graphics – 3d Animation

About the 3D animation sector of computer graphics, which has made huge economical and industrial revolution all over the world, and which has become a big source of knowledge and earnings, for many artists…

‘The lion king’, ‘Tarzan’, ‘Toy story’, ‘Tom & Jerry’, ‘The Mummy’, ‘Star Wars’, ‘Jurassic park’…. the list is end-less, it goes on and on. What was behind all these movies that influenced the audience so much? Just one thing and that was excellent efforts put forth by the artists. In above all the examples one thing that is common is CG (Computer graphics). Using this CG, impossible things are made possible. In today’s age of ‘IT’ this is one of the most powerful medium that has reached up to the common man. Off course, this technology is not used just for entertainment purpose, but also in the fields of education, engineering, internet, medical, advertisements, case-studies and game developments.

Continue reading