Home Posts tagged 'Math'

Posts Tagged ‘Math’

Faster Array Sort in Javascript

Introduction :

Based on Eugene(inspirit) post about Faster Array Sort function in Flash, I ported his test code into javascript.
First of all, I’m mainly using JS for scripting into Adobe After Effects, Photoshop, … but not so much…

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Pixel Bender : “ft-Filmic Contrast” for After Effects

Introduction

A one slider plugin that gives a very compelling filmic contrast “look” to your footage.  Partially based on Ken’s Perlin Gain function & Roy Stelzer’s presentation

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How to convert a Lightprobe into the 9 spherical harmonics coefficients

Here is a tutorial on how to convert your own Light Probe into the 9 coefficients needed into my ft-SSIBL plug-in (Screen Space Image Base Lighting).





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Rotating Normals from a Normal pass

RotateNormal is a  group node inspired from Roy Stelzer (2D TD at Double Negative) “2.5D Relighting inside of Nuke”…

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2.5D relighting in compositing with Blender (using spherical harmonics)

Introduction

About a year ago, I was watching a great presentation at the Nuke Master Class by Roy Stelzer (2D TD at

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Color Grading with Blender 2.5


Introduction

Yeahh Matt Ebb just commit my patch (SVN r27733) for the…

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Understanding Gamma and Linear workflow

Even If I’m aware of what gamma and Linear workflow is, I’m not quite sure I’m using it always in the correct way. So I decide to dive into documentations and forums again to refresh my memory about it and at the same time closing a few…

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Cubic Lens Distortion Shader

Introduction

Cubic Lens Distortion (or undistortion as well) is well known in compositing or any VFX package. Basic Lens Distortion would usually solve the distord plate a the center, but closer you would get to the…

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Saturation Shader

saturation-panel

This one should be pretty simple, but still all the shaders I have found on the Internet was based on conversion to HSL color space. Which could be actually useful if  you need some color balance control,…

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Exposure/Offset/Gamma photoshop tool to Shaders

The goal here was to understand how works the Exposure feature of Photoshop for my research on lift/gamma/gain

exposure-photoshop-panel

NB : I wouldn’t say I’m an 100% sure about how…

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  • Exposure/Offset/Gamma photoshop tool to Shaders
  • Exposure/Offset/Gamma photoshop tool to Shaders
  • Exposure/Offset/Gamma photoshop tool to Shaders
  • Exposure/Offset/Gamma photoshop tool to Shaders
  • Exposure/Offset/Gamma photoshop tool to Shaders
  • Exposure/Offset/Gamma photoshop tool to Shaders

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