Abstract
We present a novel sketch-based 2D animation technique, which allows the user to produce 2D character animations efficiently. It consists of two parts, sketch-based skeleton-driven 2D animation production and 2D motion capture. The user inputs one image of the character and sketches the skeleton for each subsequent frame. The system deforms the character and creates animations automatically. To perform 2D shape deformation, a variable-length needle model is introduced to divide the deformation into two stages: skeleton driven deformation and nonlinear deformation in joint areas. It preserves the local geometric features and global area. Compared with existing approaches, it reduces the computation complexity and produces plausible results. Because our technique is skeleton-driven, the motion of character can be captured by tracking joints position and retargeted to a new character. This facilitates the reuse of motion characteristics contained in existing moving images, making the cartoon generation easy for artists and novices alike.
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Davis, J., Chuang, E., Slesin, D.: A sketching interface for articulated figure animation. In: Proc. Eurographics/ SIGGRAPH Symposium on Computer Animation, pp. 320–328 (2003)
Thorne, M., Burke, D., Panne, M.: Motion Doodles: An interface for sketching character motion. In: SIGGRAPH 2004 Conference Proceedings, pp. 424–431 (2004)
Li, Y.: 3D Character Animation Synthesis From 2D Sketches. In: Proceedings of the 4th international Conference on Computer graphics and Interactive Techniques in Australasia and Southeast Asia, pp. 81–90 (2006)
Igarashi, T., Matsuoar, S., Tanaka, H.: Teddy: a sketching interface for 3D freeform design. In: Proceedings of ACM SIGGRAPH 1999, pp. 79–89 (1999)
Sykora, et al.: Sketching cartoons by example. In: Eurographics Workshop on Sketch-Based Interfaces and Modeling, pp. 27–34 (2005)
ToonBoom: http://www.toonboom.com/products/digitalpro/eLearning/tipsTricks/2008
Igarashi, T., Moscovich, T., Hughes, J.F.: As-rigid-as-possible shape manipulation. ACM Trans. Graphics 24(3), 1134–1141 (2005)
Williams, R.: The Animator’s Survival Kit. Faber & Faber, London (2001)
Isaac, K.: Applying the 12 Principles to 3D Computer Animation. The Art of 3D Computer Animation and Effects (2003)
Gleicher, M.: Retargeting motion to new characters. In: Proceedings of ACM SIGGRAPH 1998, pp. 33–42 (1998)
Hsu, S.C., Lee, I.H.: Drawing and animation using skeletal strokes. In: Proceedings of ACM SIGGRAPH 1994, pp. 109–118 (1994)
Fekete, J., Bizouarn, E., Cournarie, E.: TicTacToon: A paperless system for professional 2D animation. In: ACM SIGGRAPH 96 Conference Proceedings, pp. 79–90. (1996)
Weng, Y., Xu, W., Wu, Y., Zhou, K., Guo, B.: 2D Shape Deformation Using Nonlinear Least Squares Optimization. The Visual Computer 22(9-11), 653–660 (2006)
Schaefer, S., Mcphail, T., Warren, J.: Image deformation using moving least squares. In: SIGGRAPH 2006 Conference Proceedings, pp. 255–262. (2006)
Wang, Y., Xu, K., Xiong, Y., Cheng, Z.: 2D shape deformation based on rigid square matching. Computer Animation and Virtual Worlds 19(3-4), 411–420 (2008)
Fayreau, L., Reveret, L., Depraz, C., Cani, M.P.: Animal gaits from video. In: Eurographics/SIGGRAPH Symposium on Computer Animation, pp. 277–286 (2004)
Bregler, C., Loeb, L., Erika, Chuang, E. Deshpande, H.: Turning to the masters: motion capturing cartoons. In: SIGGRAPH Conference Proceedings, pp 121–129. (2002)
Hornung, A., Dekkers, E., Kobbelt, L.: Character animation from 2D pictures and 3D motion data. ACM Trans. Graph. 26(1), 1–9 (2007)
Sykora, et al.: As-Rigid-As-Possible Image Registration for Hand-drawn Cartoon Animations. In: Proceedings of the 7th International Symposium on Non-Photorealistic Animation and Rendering, pp. 25–33 (2005)
Kong, Y., Rosenfield, A.: Digital topology: Introduction and survey. Comp. Vision, Graphics and Image Proc. 48(3), 357–393 (1989)
Drori, I., Cohen-or, D., Yeshurun, H.: Fragment-Basedimage completion. ACM Trans. Graph. 22(3), 303–312 (2003)
Cornea, D., Silver, D., Min, P.: Curve-skeleton properties, applications and algorithms. IEEE Transactions on Visualization and Computer Graphics 6(3), 81–91 (2006)
Shamir, A.: A Survey on Mesh Segmentation Techniques. Computer Graphics Forum 27(6), 1539–1556 (2008)
27. Sorkine, O., Lipman, Y., Cohen-OR, D., Alexa, M., Rossl, C., Seidel, H. P.: Laplacian surface editing. In: Symposium on Geometry Processing, ACM SIGGRAPH/ Eurographics, pp. 179–188 (2004)
28. Wang, J., Bhat, P., Colburn, A., Agrawala, M., Cohen, M.: Interactive Video Cutout. In: SIGGRAPH 2004 Conference Proceedings, pp. 124–131. (2004)
Li, Y., Gleicher, M., Xu, Y.Q., Shum, H.Y.: Stylizing motion with drawings. In: ACM SIGGRAPH/Eurographics Symposium on Computer Animation, pp. 111–122 (2003)
Eitz, M., Sorkine, O., Alexa, M.: Sketch Based Image Deformation. In: Proceedings of Vision, Modeling and Visualization, pp. 135–142 (2007)
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Pan, J., Zhang, J.J. (2011). Sketch-Based Skeleton-Driven 2D Animation and Motion Capture. In: Pan, Z., Cheok, A.D., Müller, W. (eds) Transactions on Edutainment VI. Lecture Notes in Computer Science, vol 6758. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-22639-7_17
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DOI: https://doi.org/10.1007/978-3-642-22639-7_17
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