| Author | Thanakorn Sakchaicharoenkul |
| Call Number | AIT Diss. no.CS-06-03 |
| Subject(s) | Computer animation
|
| Note | A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Engineering in Computer Science, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Dissertation ; no. CS-06-03 |
| Abstract | In hand drawn animation, some of the animations are created at very low frame rates (12 frames per second) because of limited budget. A simple technique for increasing frame rates is animation tweening. In fact, most animation tweening applications process only vector-based objects. Further, there is no algorithm that can automatically define extensive modeling and animation of 3D objects for animation tweening process. We present the raster-based animation tweening algorithm that does not require extensive modeling and animation of 3D objects. Our algorithm is based on motion compensated frame rate up-conversion (MC-FRC) whose performance heavily depends on motion estimation. To avoid blocking artifacts on conventional MC-FRC, we do motion estimation in pixel-based format, optical flow. We therefore develop the more accurate pixel-based flow field. Key frame is segmented by mean shift based image segmentation method. Every key frame segment is then warped with computed 2D parametric motion flow field to bring it close to its consecutive key frame and then estimate conventional optical flow field. After that the conventional optical flow field and 2D parametric motion flow field are combined to compute the more accurate motion field. We illustrate our results with various types of hand drawn animation scenes. The experimental results show that higher quality in-between frames can be obtained by the proposed algorithm. |
| Year | 2006 |
| Corresponding Series Added Entry | Asian Institute of Technology. Dissertation; no. CS-06-03 |
| Type | Dissertation |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Computer Science (CS) |
| Chairperson(s) | Guha, Sumanta; |
| Examination Committee(s) | Hoang Le Tien;Kiyoshi, Honda;Harada, Koichi; |
| Scholarship Donor(s) | Office of the Commission on Higher Education; |
| Degree | Thesis (Ph.D.) - Asian Institute of Technology, 2006 |