On the estimation of optical flow: relations between different approaches and some new results
Artificial Intelligence
Fundamentals of digital image processing
Fundamentals of digital image processing
Digital image processing (3rd ed.): concepts, algorithms, and scientific applications
Digital image processing (3rd ed.): concepts, algorithms, and scientific applications
TicTacToon: a paperless system for professional 2D animation
SIGGRAPH '95 Proceedings of the 22nd annual conference on Computer graphics and interactive techniques
Computer facial animation
The digital Michelangelo project: 3D scanning of large statues
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Spatiotemporal sensitivity and visual attention for efficient rendering of dynamic environments
ACM Transactions on Graphics (TOG)
A color animation system: based on the multiplane technique
SIGGRAPH '77 Proceedings of the 4th annual conference on Computer graphics and interactive techniques
Motion and Structure from Image Sequences
Motion and Structure from Image Sequences
The A -buffer, an antialiased hidden surface method
SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
Efficient rendering and compression for full-parallax computer-generated holographic stereograms
Efficient rendering and compression for full-parallax computer-generated holographic stereograms
Computer-assisted artistic pattern drawing
SG'05 Proceedings of the 5th international conference on Smart Graphics
Correspondence construction for cartoon animation via sparse coding
Proceedings of the Fifth International Conference on Internet Multimedia Computing and Service
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Although 2D animation production today has become more efficient with the help of improved computer technology, it is still very labor intensive. The less creative inking/painting and inbetweening processes take a significant portion of the total work. Our Computer-assisted Cel Animation (CACAni) research aims at automating the above two processes to assist animators in producing their work faster and with better quality. In this paper, a post-processing algorithm for generating inbetween frames is proposed. Algorithms for generating inbetweenings, particularly, the Feature-based Matching (MFBA) of keyframes and linear inbetween frame generation are also introduced. Images constructed with MFBA may have gaps (artefacts) due to the lack of smoothness among adjacent displacement vectors as well as the discrete feature of rasterization. With the guidance of displacement vectors, our algorithm classifies the gaps into several categories and handles them accordingly. The results are compared with those processed by filtering method to show the superiority of the new algorithm.