I have just finish two composite filter, namely Black Pencil and Color Pencil. I use a list of filters stored in them to render out the image sequentially. However, in Color Pencil, I have to use some inter-image processing technique to blend results together, in order to create a illusion of pencil drawing.
There are some slightly draw backs for the color pencil filter though. It seems that maybe due to the way that the Hydrangeas's photo is taken, the photo is slightly softer than others, which makes the internal calculations to produce a less obvious result, for both color pencil and black pencil.
Anyway, the Chrysanthemum impresses me the most, even though in the photo create a real mess in Automated Histogram Equalization, the photo looks equally good in color-pencil drawing, although I don't think there's any kid can produce that kind of drawing with just color-pencil.
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| Chrysanthemum: Color Pencil Render |
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| Chrysanthemum: Black Pencil Render |
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| Hydrangeas: Color Pencil Render |
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| Hydrangeas: Black Pencil Render |
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| Desert: Color Pencil Render |
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| Desert: Black Pencil Render |
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