Still CLD

Those images are created before finding the vector graphics. A question is still there. Do we want the doubly edges?

A result from dilation

Thickness indication

Recover some old CLD stuffs (not that high quality)

Finally get those bugs gone. But the basic ides have a lot of limitations. Not sure if it is worth to recover them now. Should put more time on tree variations to change some artefacts and create more styles.

v: bw

Different maps between H and V

Canny test

ETF and BW result (Example mentioned)

H-way and ETF

Get the basic GLSL working

Next: testing illuminated line revisited

POV-ray renderer

The next step is to implement Chen's rendering method used in her thesis.

Using two textures to replace the lines

The alpha map should be added to remove the artefacts.

Triangulation based on edges

Extract edges from three methods: canny, etf, and thresholding gradients. Then construct a triangulation from the points on the edges.  

Gradients might be a better way for the irregular embroidery

Choose a threshold of gradient magnitudes and densely draw short straight lines for each pixels. Since we do not care how many stitches, gradients decide the boundaries nicely. Then maybe we can think about the inner directions to have some contrast.Have to find a way  to distinguish three contents: background, texture, and smooth parts.I am thinking to interactively define them if we cannot find an automatic way in a short time.