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Enhanced LIC Pencil Filter. A project proposal by David Coyne. Authors’ earlier technique. Line Integral Convolution produces pencil-like strokes Relies on segmentation (c), a challenging and computationally intensive problem. Authors’ earlier technique.

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Enhanced lic pencil filter

Enhanced LIC Pencil Filter

A project proposal by David Coyne


Authors earlier technique
Authors’ earlier technique

  • Line Integral Convolution produces pencil-like strokes

  • Relies on segmentation (c), a challenging and computationally intensive problem


Authors earlier technique1
Authors’ earlier technique

  • The original technique was slow because it required segmentation.

  • it didn’t always distinguish areas well.


Concept of enhanced lic
Concept of enhanced LIC

  • Successive layers of strokes in different directions imitates actual technique.

  • Finding layers of intensity range does not require segmentation of image regions


Steps for enhanced lic
Steps for enhanced LIC

  • Divide image into intensity layers


Steps for enhanced lic1
Steps for enhanced LIC

  • Apply LIC, using texture orientation for darkest level vector field


Steps for enhanced lic2
Steps for enhanced LIC

  • Add edges from edge detection

  • Subtract paper samples for more realism


Risks
Risks

  • Don’t know how to do Line Integral Convolution

  • Determining texture direction

  • Where to get digital paper samples


Weekly milestones
Weekly Milestones

  • Nov. 24: Make LIC function

  • Dec. 1: Represent vector fields in Matlab, Test LIC function on images and debug results

  • Dec. 8: Implement texture direction and edge detection


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