Grasshopper 101: Parameterization | #05 Image Sampler Introduction

This tutorial covers the essentials of image-based mapping in Grasshopper.
We discuss domains, channels, data filtering and incorporate many other relevant tools.

The image files for this exercise can be found here:
https://www.learn-visual-programming....

This video is an introductory Grasshopper tutorial for beginners.

CHAPTERS:
00:00 Intro
00:10 Loading an image to Grasshopper
00:44 Image Sampler definition
01:00 Point grid size and density
01:45 Circle sizes depending on grid resolution
02:52 Mapping image pixel data to circle sizes
04:30 Image Sampler domain and Tiling options
05:15 Image sampler output bounds
05:46 Removing smaller values from the list | The Maximum component
06:29 Non-square image domain, different x and y ratios
09:10 Separating the sampling points and the target points
10:20 Removing the background with Image Sampler | Sift Pattern
11:26 Rounding floating number to integers | The Round component
11:45 Image Sampler channels | Split ARGB component
12:44 Custom color preview with Image Sampler
13:00 Surface creation, Profiler widget and the Data Dam tool
13:35 Closing

COMPONENTS:
Image Sampler
The Scale component
Sift Pattern
The Maximum
The Round component
Split ARGB
Data Dam
Custom Preview

REFERENCED VIDEOS:
The attracting geometry exercise:
   • Grasshopper 101: Parameterization | #04 Fi...  
The Expression component:
   • Grasshopper 101: Data Filtering | #08 Labe...  
Graph Mapper domains:
   • Grasshopper 101: Parameterization | #03 Gr...  
Data matching with Cross Reference:
   • Grasshopper 101: Data Lists | #08 Cross Re...  
Data filtering with the Sift Pattern:
   • Grasshopper 101: Data Filtering | #04 Disp...  

LINKS
Add-ons: https://www.food4rhino.com/
Forum: https://discourse.mcneel.com/
Grasshopper component library: http://grasshopperdocs.com/

CONTACT US AT:
https://www.learn-visual-programming.com

Narrated by: Lina Vestarte
_

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