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Automatic Recognition of Speed Limits on Speed-Limit Signs by Using Machine Learning
Published 2017-07-01“…This study describes a method for using a camera to automatically recognize the speed limits on speed-limit signs. This method consists of the following three processes: first (1) a method of detecting the speed-limit signs with a machine learning method utilizing the local binary pattern (LBP) feature quantities as information helpful for identification, then (2) an image processing method using Hue, Saturation and Value (HSV) color spaces for extracting the speed limit numbers on the identified speed-limit signs, and finally (3) a method for recognition of the extracted numbers using a neural network. …”
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Classical and quantum speed limits
Published 2021-06-01“…The new bound on quantum speed limit (in terms of relative purity) is derived by applying the original Mandelstam-Tamm one to the evolution in the space of Hilbert-Schmidt operators acting in the initial space of states. …”
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Speed limit of quantum metrology
Published 2023-07-01“…On the other hand, the quantum speed limit bounds the speed of dynamics of any quantum process. …”
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Breaking the photoswitch speed limit
Published 2023-11-01“…Herein, we report a breakthrough in the “speed limit” of photochromic molecules on the example of sterically-demanding spiropyran derivatives through their integration within solvent-free confined space, allowing for engineering of the photoresponsive moiety environment and tailoring their photoisomerization rates. …”
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Speed Limits for Macroscopic Transitions
Published 2022-04-01“…This framework enables us to derive novel quantum speed limits for macroscopic unitary dynamics. Unlike previous bounds, the speed limit decreases when the expectation value of the transition Hamiltonian increases; this intuitively describes a new trade-off relation between time and the quantum phase difference. …”
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Robust vehicle speed limiter
Published 2014“…Upon implementation of this system the speed limiter will make these HEVs to move at the speed limit pre-fixed for the particular highway.…”
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Generalized Geometric Quantum Speed Limits
Published 2016-06-01“…One of such advances consists in the interpretation of the time-energy uncertainty relations as lower bounds for the minimal evolution time between two distinguishable states of a quantum system, also known as quantum speed limits. We investigate how the nonuniqueness of a bona fide measure of distinguishability defined on the quantum-state space affects the quantum speed limits and can be exploited in order to derive improved bounds. …”
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Quantum speed limits for information and coherence
Published 2022-01-01Subjects: “…quantum speed limit…”
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Characteristics of variable speed limit systems
Published 2018-05-01Subjects: “…Variable speed limit systems…”
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Speed limit for open quantum systems
Published 2019-01-01Subjects: “…quantum speed limits…”
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Quantum speed limits for change of basis
Published 2024-01-01“…Quantum speed limits provide ultimate bounds on the time required to transform one quantum state into another. …”
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What is the speed limit of martensitic transformations?
Published 2022-12-01“…Thus, martensitic transformations obey similar speed limits as in microelectronics, as expressed by the Margolus – Levitin theorem.…”
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Quantum speed limit for complex dynamics
Published 2023-10-01“…Abstract Quantum speed limit focuses on the minimum time scale for a fixed mission and hence is important in quantum information where fast dynamics is usually beneficial. …”
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Speed limits on deterministic chaos and dissipation
Published 2023-02-01“…Here, we derive a classical uncertainty relation that sets a speed limit on the rates of local observables underlying these behaviors. …”
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Quantum speed limits, coherence, and asymmetry
Published 2016“…Furthermore, the celebrated Mandelstam-Tamm and Margolus-Levitin speed limits can be interpreted as upper bounds on this measure of asymmetry by functions which are themselves measures of asymmetry in the special case of pure states. …”
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