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PIEs: Pose Invariant Embeddings

Chih-Hui Ho, Pedro Morgado, Amir Persekian, Nuno Vasconcelos
2019 2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)  
This leads to a new family of pose invariant embeddings (PIEs), derived from existing approaches by a combination of two models, which follow from the interpretation of CNNs as estimators of class posterior  ...  The role of pose invariance in image recognition and retrieval is studied.  ...  Applying the procedure to the triplet center approach, leads to the pose invariant triplet center (PI-TC) embedding.  ... 
doi:10.1109/cvpr.2019.01266 dblp:conf/cvpr/HoMPV19 fatcat:2fwlas6lyfeebhszjjatolykji

Manifolds with $\pi _1 = Z$

William Browder
1966 Bulletin of the American Mathematical Society  
The case of a nonzero fundamental group poses many problems, but if itxM -Z, one can reduce the situation to the simply connected case by using extra geometrical structure.  ...  In case M is simply connected many conditions facilitate the surgery, such as the Whitney embedding theorem, and the Hurewicz theorem, so that, with appropriate hypothesis on X and £, it is often possible  ...  , pi are the dual Pontrjagin classes of £ and g£iî n+ i(X) is the preferred generator.  ... 
doi:10.1090/s0002-9904-1966-11482-9 fatcat:3ijmg5ueurbi3i3mwnmquhyyh4

$$\omega \rightarrow 3\pi $$ and $$\omega \pi ^{0}$$ transition form factor revisited

M. Albaladejo, JPAC Collaboration, I. Danilkin, S. Gonzàlez-Solís, D. Winney, C. Fernández-Ramírez, A. N. Hiller Blin, V. Mathieu, M. Mikhasenko, A. Pilloni, A. Szczepaniak
2020 European Physical Journal C: Particles and Fields  
AbstractIn light of recent experimental results, we revisit the dispersive analysis of the $$\omega \rightarrow 3\pi $$ ω → 3 π decay amplitude and of the $$\omega \pi ^0$$ ω π 0 transition form factor  ...  Furthermore, we show that at low energies the $$\omega \pi ^0$$ ω π 0 transition form factor obtained from our determination of the $$\omega \rightarrow 3\pi $$ ω → 3 π amplitude is consistent with the  ...  A Gaussian distribution with the average and error quoted in Table 2 is superim-posed for each solution.  ... 
doi:10.1140/epjc/s10052-020-08576-6 fatcat:xzgv6b5rwzfxbhv2vi62zxvucm

Pi-Tag: a fast image-space marker design based on projective invariants

Filippo Bergamasco, Andrea Albarelli, Andrea Torsello
2012 Machine Vision and Applications  
Some tags are optimized to reach a high accuracy in the recovered camera pose, others are based on designs that aim to maximizing the detection speed or minimizing the effect of occlusion on the detection  ...  Specifically, by exploiting projective invariants such as collinearity and cross-ratios, we introduce a detection and recognition algorithm that is fast, accurate and moderately robust to occlusion.  ...  Pi-Tag shows better results both when the pose is evaluated with the original thresholded ellipses and after the refinement.  ... 
doi:10.1007/s00138-012-0469-6 fatcat:yypyfdhzh5bx7np26p7duwrcre

On "sluicing" with apparent massive pied-piping

Klaus Abels
2018 Natural language & linguistic theory  
pied-piping.  ...  Under certain, very restricted circumstances, sluicing appears to be able to tolerate wh-phrases with massive pied-piping.  ...  Because of this, allowing non-isomorphic pre-sluices will not help with the problem posed by (1a) and (6a).  ... 
doi:10.1007/s11049-018-9432-1 fatcat:thnwqof6wzgfvhwkhv6hneimjq

Implementation of Human Face Detection System for Door Security using Raspberry Pi

Shrutika V. Deshmukh, Prof Dr. Kshirsagar U. A.
2017 IJIREEICE  
Training and identification is done in embedded device known as Raspberry Pi. 188 microcontroller gives a voltage of 3V, and the other 5V.  ...  Raspberry Pi does not have an operating system previously installed, but that can be downloaded from the Raspberry website, and transferred to an SD card, Figure 1 shows the Raspberry pi model B 3 along  ...  Like image capturing technique in an embedded system with Raspberry Pi 1 Model B.  ... 
doi:10.17148/ijireeice.2017.5434 fatcat:sddkafkgobhuxhpxamuaahwrr4

Logics for The Applied pi Calculus

Michael David Pedersen
2006 BRICS Report Series  
In this master's thesis we present a modal logic for Applied pi which characterises observational equivalence on processes.  ...  The motivation is similar to that of Applied pi itself, namely generality: the logic can be adapted to a particular application simply by defining a suitable equational theory on terms.  ...  embedded in y 3 .  ... 
doi:10.7146/brics.v13i19.21923 fatcat:dl2khbjcpjhxhctzcot7pbyt7m

Experimental Vision Robot for General Working Application using Raspberry Pi and Single Camera with Python-OpenCV

Hendra Hermawan
2019 ACMIT Proceedings  
and Triangulation similarity method for object pose estimation.  ...  We have experimented robot vision for this purpose using Raspberry Pi and single web camera supported by Python-OpenCV programming using color-base and contour-base detection algorithm for object recognition  ...  Conclusion and Further Work This paper has reported some experiments using Raspberry Pi Raspberry Pi 2 and Web Cam that was sufficient as embedded computer vision for autonomous vision robot with cycle  ... 
doi:10.33555/acmit.v3i1.50 fatcat:mkkmicgfevgf7crswm3gdxxn7q

PiLib: A Hosted Language for Pi-Calculus Style Concurrency [chapter]

Vincent Cremet, Martin Odersky
2004 Lecture Notes in Computer Science  
In this paper, we describe our experience with such an embedding.  ...  Implementing a high-level concurrent language as a library abstraction poses some challenges for the syntactic and type system abilities of the host language.  ... 
doi:10.1007/978-3-540-25935-0_11 fatcat:rbfxk3xrv5bkhgzwq5grcsuwjq

Comparing the $\pi$-primary submodules of the dual Selmer groups

Meng Fai Lim
2017 Asian Journal of Mathematics  
For a place v of F , fixing an embedding F → F v , let G(v) be the kernel of Gal( Fv /F v ) −→ G and let G v ⊆ G be the image. Then the following statements hold.  ...  It is then natural to consider the situation when the said Iwasawa μ-invariants are nonzero and ask if one can relate the Iwasawa μ-invariants.  ... 
doi:10.4310/ajm.2017.v21.n6.a7 fatcat:5uaupx3wqrc4nhzoxdcirioywu

On the Coherence of Large-Scale Networks with Distributed PI and PD Control [article]

Emma Tegling, Henrik Sandberg
2017 arXiv   pre-print
We propose distributed proportional integral (PI) and proportional derivative (PD) controllers that relax these limitations and achieve bounded variance, in cases where agents can access an absolute measurement  ...  DISTRIBUTED PI AND PD CONTROL We now introduce the distributed PI and PD controllers with which we propose to address the limitations posed by proportional control.  ...  Due to the unitary invariance of the H 2 norm, we can also transform the input and output according toŵ := U * w,ŷ := U * y.  ... 
arXiv:1703.03691v2 fatcat:egsmdm77afbvxoujkg7nn3icae

Multivariable boundary PI control and regulation of a fluid flow system

Cheng-Zhong Xu, Gauthier Sallet
2014 Mathematical Control and Related Fields  
This space is isomorphic to D(A * ) , the dual space of D(A * ) and X 1 ⊂ X ⊂ X −1 , densely and with continuous embeddings.  ...  An important subclass of the well-posed linear systems are the regular linear systems [22] .  ...  The mapping being invariant with respect to the transformations we have C 6 = G 0 .  ... 
doi:10.3934/mcrf.2014.4.501 fatcat:sduv3bokcfautgcdi2lotou65i

Undecidability of the Spectral Gap

Toby Cubitt, David Perez-Garcia, Michael M. Wolf
2022 Forum of Mathematics, Pi  
We construct families of translationally invariant, nearest-neighbour Hamiltonians on a 2D square lattice of d-level quantum systems (d constant), for which determining whether the system is gapped or  ...  (Returning the head to the starting cell at the end of the computation poses no great difficulty.) In particular, this means that there exist proper universal Turing Machines.  ...  Illegal pairs Tracks 1 and 4 Tracks 1 and 5 Tracks 1 and 6 https://doi.org/10.1017/fmp.2021.15 Published online by Cambridge University Press Forum of Mathematics, Pi https://doi.org/10.1017/  ... 
doi:10.1017/fmp.2021.15 fatcat:w4eln4opm5hd3bdrrkd4lujiqi

Practical Stabilization of a Drilling Pipe under Friction with a PI-Controller [article]

Matthieu Barreau, Alexandre Seuret
2019 arXiv   pre-print
Numerical simulations show the effectiveness of the method and that the stick-slip oscillations cannot be weaken using a PI controller.  ...  This paper deals with the exponential stability of a drilling pipe controlled by a PI controller. The model used leads to a coupled ODE / PDE and is consequently of infinite dimension.  ...  One of the most famous is the modified PI controller in [42] , but there is also a delayed PI or a flatness based control in [33] .  ... 
arXiv:1904.10658v1 fatcat:2r64ee4vxjedhpzooeo75co4du

The support of singular stochastic partial differential equations

Martin Hairer, Philipp Schönbauer
2022 Forum of Mathematics, Pi  
It is again easy to convince oneself that polynomial decorations pose no problems.  ...  of Mathematics, Pi 𝑚𝜃 𝜆 𝜃 𝐶 (𝜃), https://doi.org/10.1017/fmp.2021.18 Published online by Cambridge University Press  ...  Embedding the tree algebra into the Feynman-diagram algebra We now construct for any properly legged tree 𝜏 ∈ T ex,pl − a Feynman vacuum diagram Γ(𝜏) := (𝑉 Γ (𝜏), 𝐸 Γ (𝜏)) together with the necessary  ... 
doi:10.1017/fmp.2021.18 fatcat:omcoolnpnfebtm5bhkw6sglnbu
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