Image sampler to output as points not polygons

by Posty

Mar 20, 2012

I'm a relative novice to Grasshopper, advanced Rhino user. I'm trying to link an image sampler such that it gives me a field of points. 

I can do this to get circles or polygons to form a perforated pattern based on the image but if I want just points to use as a base for manipulation later  what should I do?

Thanks!!

  • up

    Danny Boyes

    The image sampler doesn't out put any geometry. The data that comes out is a value of the interrogated image at a supplied reference location. You can have it as either colour, brightness, hue, saturation or one of the channels. How you use this data is up to you. You could have a Smaller Than component which returns a list of True/False values based on a target brightness. This pattern could then be used to Cull a set of points that represent the reference location of the image so you only get the values which are darkest etc.

    2

    Mar 20, 2012