Why Non-photorealistic Rendering is so famous for 3D effects ?

The Non-photorealistic Rendering is an NPR full form we are introducing in this blog a piece of information about Computer Graphics.

As we know, the NPR full form is a process of computer engineering in the area of graphic designing.

The NPR full form as we very well knew that base on the photorealism of the creation.

Non-photorealistic rendering is an amazing technology of graphic designing that meets us in a realistic world.

The Non-photorealistic rendering is the unique and diversified method of creating a different style of projects.

Introduction of npr full form:

The Non-photorealistic rendering is a cover under computer graphics art that focuses on a wide variety of stylish digital art.

In the opposition of traditional computer graphics, it was focus on the photorealism technique.

The NPR full form inspires by various artistic styles that are:

  • Paintings
  • Drawings
  • Technical Illustration
  • Animated Cartoons

As NPR not only consider in movies and video games as the form in which show called “Too Shading.”

But also the NPR full form appears in scientific visualisation, architectural illustration as well as experimental animation.

NPR’s most used modern example is a cel-shaded animation.

The history of NPR:

The naming of Non-photorealistic Rendering believed that mark out by the SIGGRAPH 1990 papers committee.

The committee also held a session regarding name as “Non-Photo Realistic Rendering.”

However, the term Non-photorealistic rendering is quite also receiving criticism as the explaining of concept.

When the first conference made on non-photorealistic rendering as the discussion was on his name.

The conference meeting purposed alternative names as expressive graphics, artistic rendering, non-realistic graphics, art-based rendering and psychographics.

All are mention terms uses by various research papers on the topic, but despite that, the NPR took on hold.

Soon the first technical meeting as ACM sponsored Symposium on Non-Photorealistic Rendering and Animation (NPAR).

This technical meeting dedicated to the Non-photorealistic rendering (NPR full form) in 2000.

The NPAR is one traditionally co-relates to the Annecy Animated Film Festival.

The NPAR not only running on the even-numbered years but also odd-numbered years from 2007.

This running with odd-numbered is primarily co-related to ACM SIGGRAPH.

The Three-dimensional NPR (3D-model):


The 3D three-dimensional style most popular amongst the videos and gaming programming as very commonly seen in movies.

It is an output of technique seen in the 3D model by modifying the original input model to create a picture in a new artistic style.

As seen much cases, geometry is very much identical to the actual geometry. And material only applicable to this model to modify the surface of the model.

This is with the increased availability of programmable GPUs and shaders which allowed to NPR.

This permit to NPR shows effects that are applied to the rasterized image which were display on the screen.

The NPR techniques are includes in 3D images are:

  • Cel-shading
  • Gooch Shading

Two-dimensional NPR (2D):

In this system of Two-dimensional NPR i.e., 2D as the input is typically based on image and videos.

And this input presents its output as artistic rendering for example as given as watercolour, painterly and sketch style.

Besides, some of the two-dimensional inputs presents its output as also in non-artistic rendering.

As well as the artistic rendering of images and videos are generally focuses on the heuristic algorithms.

 The recent example of 2D NPR is Paul Haeberlis ‘Paints by Numbers’ at the SIGGRAPH in 1990.

With the help of Canvas the user paints using the cursor similarly when the user paints and stylizes version display on canvas.


This is very useful to the people who wants to change in different style of brush strokes as per the areas of image.

As there the basic image creating process is using gradient operators or statistical moments used to automate the process.

This automate process is enabling the practical application 2D NPR to video. This was in actual in movie of 1998.

What is non-photorealistic rendering ?

The non-photorealistic rendering covers under the area of computer graphics art and various variety of stylish digital art. It creates different style of projects.

What is NPR 3D ?

The three dimensional style most popular amongst the videos and in the gaming programming as very commonly seen in movies and video games.

What is 2D NPR ?

The two dimensional NPR i.e., 2D as the inputs is typically based on images and videos as well as its output presents artistic rendering. For example watercolour, sketch style etc.

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