Some examples for Heightening

We can use sheep for ETF image

ETF feature with soft scaling function

To space out the ETF lines, I did it by dealing with the intensities under the mask. I showed the similar images to you yesterday. Now I remember why other pixels show evenly. It is because of the mask size.


A problematic image by ETF with not strong scaling function and try to reduce the stipples by shrink function for a dark imageETF feature

ETF with soft scaling function and try to reduce stipples for a lighter image

Evenly distributed stipples(190)

Hand-drawn stipplesFloating point paper

Our stippling

Fourier images for woman

All tests for woman image

Paper: 4000 stipples
Paper: 7000 stipplespaper: 14000 stipples

Our etfFeature-guided stippling

Measure based on CAH

woman: PSNR MSSIM CPSNR

CAhalftoning: 34.1692 ----- 0.0249 ----- 11.7397

14000:　 30.3356 ----- 0.0352 ----- 11.5094

7000: 48.9462 ----- 0.1291 ----- 12.53

4000: 57.0701 ----- 0.3082 ----- 13.625

our ETF: 28.1266 ----- 0.0807 ----- 12.0627

feature-guided:40.39 ---- 0.1346 ----- 15.2728

It seems the values cannot say a lot of things. But the MSSIM looks reasonable.

Fourier Spectrum

Play with sine function

Mosaics based on doodling lines

It's very interesting for mosaics. At least the examples show the flexibility and powerful varieties. But some properties should be constrained.

1. the size of bounded regions---might be a minor issue

2. How to define the final shapes of bounded regions?

3. Each bounded region should follow the edges without losing the similarity of shapes.-- a modified packing issues??

4. The color choice for each tile might be a feature.

4. Mosaics can be one of the goals. Another goal could be abstraction based on forms.

Some pictures for goals to be chosen

Some far-away goals

1. Texture generation e.g. tree barks are good example.

2. Some meaningless mosaics
3. Mosaics with meaning(e.g. Animosaics, Simulating Decorative Mosaics)

4. Abstraction from patterns

http://iritlevyart.wordpress.com/

http://www.barbarakeithdesigns.com/

http://www.designsbyannieb.com/gallery.html

Globally control the patterns

Size effects for stippling

m1,m2(8,5), r(1,4), 100, 12049 stipples
m1,m2(7,4), r(1,5), 100