NPR SKETCHINGS AND RENDERING FOR AUTOMATIC SYNTHESIS
OF STYLIZED DEPICTION STYLE AND ANIMATIONS

Max Mignotte

DIRO, Département d'Informatique et de Recherche Opérationnelle, CP 6128,
Succ. Centre-Ville, P.O. 6128, Montréal (Québec), H3C 3J7.



Reference                                                                                                 
M. Mignotte. Unsupervised statistical sketching for Non-Photorealistic Rendering models.
10th IEEE International Conference on Image Processing, ICIP'03,
volume III, pages 573-577, Barcelona, Spain, September 2003.
(postscript) (pdf) (Technical Report)



SKETCHINGS






Figure: From left to rigth; Real picture and Examples of sketch drawing with a pencil stroke simulating the graphite, charcoal and lead style.
(Click to enlarge the image)









Figure: From left to rigth; Real picture and Examples of sketch drawing with a particular ndering style (Click to enlarge the image).
(Click to enlarge the image)





RENDERINGS



Figure: Texture sample (respectively: fire, water, clouds, satin). Local Bayesian rendering results based on each textural sample.
(Click to enlarge the image)







Figure: Drawing image with respectively (from left to right) the following rendering styles; pointillist, hatching, cross-hatching, black charcoal, gouache painting. From the second row and from left to right; local rendering results based on each drawing example.
(Click to enlarge the image)




SKETCHINGS + RENDERINGS



















Figure: Examples of sketch drawing combined with an example-based local rendering model. From left to right, real drawing sample used to train the local rendering model (with respectively the black ink, graphite pencil, brown charcoal, sanguine (red chalk), red charcoal, etching, dry charcoal, ink painting, black charcoal, etching, combined white and black chalk), real image and sketch drawing with the textural tone value generated by each local rendering model with the above-mentioned style.
(Click to enlarge the image)







Figure: From top to bottom and left to right; Real pictures, real drawing sample used to train the local rendering model, examples of sketch drawing with a pencil stroke simulating the lerned texture, sketch drawing combined with the (example-based) local rendering model. (Click to enlarge the image)



















CONVERTING A DEPICTION STYLE INTO ANOTHER



Figure: The proposed model model also be used to convert a real drawing with a given depiction style into another one. From left to right, real drawing and its conversion into different other depiction styles with the sample used to train the local rendering model.
(Click to enlarge the image)




ANIMATIONS
mp4