rotation angle
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SupplementaryMaterial
To study the accuracy of the predicted rotation angles by TARGET-VAE, we calculate the mean standard deviation ofthepredicted rotations, introduced in[1]. This metric basically measures the mean square error between the rotation ofthe object inthe input image and the predicted rotation forthatobject. Wefind that the model correctly identifies and reconstructs the objects (Figure 3). Eachshape is rotated by one of 40 values linearly spaced in [0, 2π], translated across bothx and y dimensions, and scaled using one of six linearly spaced values in [0.5, 1]. Weobserved that, as expected, eliminating inference on the discretized rotation dimension has a significant negative effect on identifying transformation-invariant representations and the clustering accuracy on MNIST(U) is only33.8%(Table2).
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Robot joint characterisation and control using a magneto-optical rotary encoder
Guo, Yunlong, Canning, John, Chaczko, Zenon, Peng, Gang-Ding
-- A robust and compact magneto - optical rotary encoder for the characterisation of robotic rotary joints is demonstrated. The system employs magnetic field - induced optical attenuation in a double - pass configuration using rotating nonuniform magnets around an optical circulator operating in reflection . The encoder tracks continuous 360 rotation with rotation sweep rates from ν = 135 /s to ν = 3 70 /s, and an angular resolution of Δ θ = 0. 3 . I NTRODUCTION OTARY encoders convert rotation into electromagnetic signals, most commonly electrical. Examples include precision monitoring and control of steering wheels [1], [2], motors of autopilot vehicles [2], [3], robot ics [4], [5], and prosthetic arms [6] . In robotics, the encoder is a crucial part of the positional feedback needed to perform precision movements.
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In-Context Symmetries: Self-Supervised Learning through Contextual World Models
Can incorporating context into self-supervised vision algorithms eliminate augmentation-based inductive priors and enable dynamic adaptation to varying task symmetries? This work suggests a positive answer to this question by proposing to enhance the current joint embedding architecture with a finite context -- an abstract representation of a task, containing a few demonstrations that inform about task-specific symmetries, as shown in Figure 2(c).
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