基於邁布里奇攝影集的馬類步態動作生成

Horse gait synthesis based on Muybridge's photographs

黃亭潔(Ting-Chieh Huang)

指導教授 ： 林文杰

國立交通大學/資訊學院/資訊科學與工程研究所/碩士(2012年)

https://doi.org/10.6842/NCTU.2012.00025

摘要

Horse locomotion exhibits rich variations in gaits and styles. Although there have been many approaches proposed for animating quadrupeds, there is not much research on synthesizing horse locomotion. In this thesis, we present a horse locomotion synthesis approach. A user can arbitrarily change a horse’s moving speed and direction and our system would automatically adjust the horse’s motion to fulfill the user’s commands. At preprocessing, we manually capture horse locomotion data from Eadweard Muybridge’s famous photographs of animal locomotion, and expand the captured motion database to various speeds for each gait. At realtime, our approach automatically changes gaits based on speed, synthesizes the horse’s root trajectory, and adjusts its body orientation based on the horse’s turning direction. We propose an asynchronous time warping approach to handle gait transition, which is critical for generating realistic and controllable horse locomotion. Our experiments demonstrate that our system can produce smooth, rich and controllable horse locomotion in real time.

關鍵字

角色動畫 ； 動作生成 ； 四足動物步態生成

並列摘要

Horse locomotion exhibits rich variations in gaits and styles. Although there have been many approaches proposed for animating quadrupeds, there is not much research on synthesizing horse locomotion. In this thesis, we present a horse locomotion synthesis approach. A user can arbitrarily change a horse’s moving speed and direction and our system would automatically adjust the horse’s motion to fulfill the user’s commands. At preprocessing, we manually capture horse locomotion data from Eadweard Muybridge’s famous photographs of animal locomotion, and expand the captured motion database to various speeds for each gait. At realtime, our approach automatically changes gaits based on speed, synthesizes the horse’s root trajectory, and adjusts its body orientation based on the horse’s turning direction. We propose an asynchronous time warping approach to handle gait transition, which is critical for generating realistic and controllable horse locomotion. Our experiments demonstrate that our system can produce smooth, rich and controllable horse locomotion in real time.

並列關鍵字

character animation ； motion synthesis ； quadruped gait synthesis

參考文獻

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[4] R. Alexander. Optima for animals. Princeton University Press, 1996.

[5] R. Alexander and A. Jayes. A dynamic similarity hypothesis for the gaits of quadrupedal mammals. Journal of Zoology, 201(1):135–152, 1983.

[7] A. Biewener, J. Thomason, A. Goodship, and L. Lanyon. Bone stress in the horse forelimb during locomotion at different gaits: A comparison of two experimental methods. Journal of Biomechanics, 16(8):565 – 576, 1983.