نتایج جستجو برای: metric projection

تعداد نتایج: 143639  

Journal: :Journal of Mathematical Analysis and Applications 2012

Journal: :Journal of Scientific Computing 2021

Saddle points play important roles as the transition states of activated process in gradient systems driven by energy functional. However, for same functional, saddle points, well other stationary are different metrics such $$L^2$$ metric and $$H^{-1}$$ metric. The point calculation is more challenging with much higher computational cost since it involves order derivative space inner product ne...

Journal: :Systems 2022

Distribution discrepancies between different sessions greatly degenerate the performance of video-evoked electroencephalogram (EEG) emotion recognition. There are since EEG signal is weak and non-stationary these manifested in trails each session even some which belong to same emotion. To this end, we propose a Coupled Projection Transfer Metric Learning (CPTML) model jointly complete domain al...

Journal: :CoRR 2015
Qi Qian Rong Jin Lijun Zhang Shenghuo Zhu

In this work, we study distance metric learning (DML) for high dimensional data. A typical approach for DML with high dimensional data is to perform the dimensionality reduction first before learning the distance metric. The main shortcoming of this approach is that it may result in a suboptimal solution due to the subspace removed by the dimensionality reduction method. In this work, we presen...

2012
Chen-Rui Chou Stephen M. Pizer

We present a novel 2D/3D deformable registration method, called Registration Efficiency and Accuracy through Learning Metric on Shape (REALMS), that can support real-time Image-Guided Radiation Therapy (IGRT ). The method consists of two stages: planning-time learning and registration. In the planning-time learning, it firstly models the patient’s 3D deformation space from the patient’s time-va...

2013
Bjoern H. Menze Georg Langs Le Lu Albert Montillo Zhuowen Tu Antonio Criminisi Gerhard Goos Juris Hartmanis Jan van Leeuwen David Hutchison Josef Kittler Jon M. Kleinberg Gerhard Weikum

We present a novel 2D/3D deformable registration method, called Registration Efficiency and Accuracy through Learning Metric on Shape (REALMS), that can support real-time Image-Guided Radiation Therapy (IGRT ). The method consists of two stages: planning-time learning and registration. In the planning-time learning, it firstly models the patient’s 3D deformation space from the patient’s time-va...

2001
Michael D. Grossberg Shree K. Nayar

Linear perspective projection has served as the dominant imaging model in computer vision. Recent developments in image sensing make the perspective model highly restrictive. This paper presents a general imaging model that can be used to represent an arbitrary imaging system. It is observed that all imaging systems perform a mapping from incoming scene rays to photo-sensitive elements on the i...

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