dilation by thickness

[MENOZ]

hello

I'm trying to figure out a way to modify the thickness of the lines in comp.

http://graphics.pixar.com/library/ToonRendering/paper.pdf

I decided to try in houdini cops.

once I have my clean contour lines, I use the dilate/erode node, but i want to modify the size value according to the black and white map. I tried with expression

tex(filename, U, V, color_type)

tex("/img/comp1/map_bw_jpg", 0, 0, L)

I tried to change values U and V inthe expression but nothig seems to happen.

how can I do to make it works?

thankyou

[mawi]

hello

I'm trying to figure out a way to modify the thickness of the lines in comp.

http://graphics.pixar.com/library/ToonRendering/paper.pdf

I decided to try in houdini cops.

once I have my clean contour lines, I use the dilate/erode node, but i want to modify the size value according to the black and white map. I tried with expression

tex(filename, U, V, color_type)

tex("/img/comp1/map_bw_jpg", 0, 0, L)

I tried to change values U and V inthe expression but nothig seems to happen.

how can I do to make it works?

thankyou

Pipe the image into the mask-input.

EDIT.

Dont forget to change the Operation Mask parameter under DilateErode->Mask->Oparation Mask, if you want to mask with something else then alpha.

Edited July 24, 2010 by mawi

[MENOZ]

Pipe the image into the mask-input.

EDIT.

Dont forget to change the Operation Mask parameter under DilateErode->Mask->Oparation Mask, if you want to mask with something else then alpha.

this doesn't work.

I dont't want to maks the effect, I want to modulate the "size" parameter.

[malexander]

The Expand COP does per-pixel expansion or compression if you add a mask to it, and also produced much nicer results than Dilate-Erode. The downside is that it's a slower operation.