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您的检索式：作者名="CELONG LIU"
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| 1 | Real-Time Avatar Pose Transfer and Motion Generation Using Locally Encoded Laplacian Offsets显示文摘We propose a human avatar representation scheme based on intrinsic coordinates,which are invariant to isometry and insensitive to human pose changes,and an efficient pose transfer algorithm that can utilize this representation to reconstruct a human body geometry following a given pose.Such a pose transfer algorithm can be used to control the movement of an avatar model in virtual reality environments following a user's motion in real time.Our proposed algorithm consists of three main steps.First,we recognize the user's pose and select a template model from the database who has a similar pose;then,the intrinsic Laplacian offsets encoded in local coordinates are used to reconstruct the human body geometry following the template pose;finally,the morphing between the two poses is generated using a linear interpolation.We perform experiments to evaluate the accuracy and efficiency of our algorithm.We believe our proposed system is a promising human modeling tool that can be used in general virtual reality applications. | Masoud Zadghorban Lifkooee Celong Liu Yongqing Liang Yimin Zhu Xin Li | 2019 | Journal of Computer Science & Technology2019，34，2： | 3 |
| 2 | CHARACTERISTIC FEATURES OF MUELLER MATRIX PATTERNS FOR POLARIZATION SCATTERING MODEL OF BIOLOGICAL TISSUES显示文摘We developed a model to describe polarized photon scattering in biological tissues.In this model,tissues are simplified to a mixture of scatterers and surrounding mpdium.There are t wo types ofscatterers in the model:solid spheres and infinitely long solid cylinders.Variables related to thescatterers include:the densities and sizes of the spheres and cylinders,the orientation and angulardistribution of cylinders.Variables related to the surrounding medium include:the refractiveindex,absorption coeficient and birefringence.In this paper,as a development we introduce anoptical activity effct to the model.By comparing experiments and Monte Carlo simulations,we analyze the backscater ing Mueller matrix patterms of several tissue-like media,and summarizethe different effects coming from anisotropic scattering and optical properties.In addition,wepropose a possible method to extract the optical activity values for tissues.Both the experimentaland simulated results show that,by analyzing the Mueller matrix patterns,the microstructureand optical properties of the medium can be obtained.The characteristic features of Muellermatrix patterns are potentilly powerful tools for studying the contrast mechanisms of polari-zation imaging for medical diagnosis. | E DU HONGHUI HE NAN ZENG CELONG LIU YIHONG GUO RAN LIAO MINGHAO SUN YONGHONG HE HUI MA | 2014 | Journal of Innovative Optical Health Sciences2014，7，1： | 0 |
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