O'Reilly logo

Jim Blinn's Corner: Notation, Notation, Notation by Jim Blinn

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter Nine

A Ghost in a Snowstorm

January-February 1998

u09-01-9781558608603

There' a storm cloud growing on the horizon of the digital convergence between computer graphics and television/graphic arts. Computer graphics and image processing assume that pixel values are linearly related to light intensity. A typical video or paint image, however, encodes intensity nonlinearly. Most image manipulation software doesn't take this into account and just does arithmetic on the pixel values as though they were linearly related to light intensity. This is obviously wrong. The questions are how wrong, and for what pixel values is the problem worst and best?

Let's review the two ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required