17,635 research outputs found
Beyond Gazing, Pointing, and Reaching: A Survey of Developmental Robotics
Developmental robotics is an emerging field located
at the intersection of developmental psychology
and robotics, that has lately attracted
quite some attention. This paper gives a survey of
a variety of research projects dealing with or inspired
by developmental issues, and outlines possible
future directions
Design and Evaluation of a Bioinspired Tendon-Driven 3D-Printed Robotic Eye with Active Vision Capabilities
The field of robotics has seen significant advancements in recent years,
particularly in the development of humanoid robots. One area of research that
has yet to be fully explored is the design of robotic eyes. In this paper, we
propose a computer-aided 3D design scheme for a robotic eye that incorporates
realistic appearance, natural movements, and efficient actuation. The proposed
design utilizes a tendon-driven actuation mechanism, which offers a broad range
of motion capabilities. The use of the minimum number of servos for actuation,
one for each agonist-antagonist pair of muscles, makes the proposed design
highly efficient. Compared to existing ones in the same class, our designed
robotic eye comprises aesthetic and realistic features. We evaluate the robot's
performance using a vision-based controller, which demonstrates the
effectiveness of the proposed design in achieving natural movement, and
efficient actuation. The experiment code, toolbox, and printable 3D sketches of
our design have been open-sourced
Biologically Inspired Visual System Architecture for Object Recognition in Autonomous Systems
Findings in recent years on the sensitivity of convolutional neural networks
to additive noise, light conditions and to the wholeness of the training
dataset, indicate that this technology still lacks the robustness needed for
the autonomous robotic industry. In an attempt to bring computer vision
algorithms closer to the capabilities of a human operator, the mechanisms of
the human visual system was analyzed in this work. Recent studies show that the
mechanisms behind the recognition process in the human brain include continuous
generation of predictions based on prior knowledge of the world. These
predictions enable rapid generation of contextual hypotheses that bias the
outcome of the recognition process. This mechanism is especially advantageous
in situations of uncertainty, when visual input is ambiguous. In addition, the
human visual system continuously updates its knowledge about the world based on
the gaps between its prediction and the visual feedback. Convolutional neural
networks are feed forward in nature and lack such top-down contextual
attenuation mechanisms. As a result, although they process massive amounts of
visual information during their operation, the information is not transformed
into knowledge that can be used to generate contextual predictions and improve
their performance. In this work, an architecture was designed that aims to
integrate the concepts behind the top-down prediction and learning processes of
the human visual system with the state of the art bottom-up object recognition
models, e.g., deep convolutional neural networks. The work focuses on two
mechanisms of the human visual system: anticipation-driven perception and
reinforcement-driven learning. Imitating these top-down mechanisms, together
with the state of the art bottom-up feed-forward algorithms, resulted in an
accurate, robust, and continuously improving target recognition model
The case of communicative intransitive gestures: further developments on a dual mechanism for motor control of action in imitation
Imitation is classically thought of as a mechanism that allows learning from demonstration. Several are the models that offer an explanation of how human imitation is accomplished. Observations of brain damaged patients, healthy subjects and brain imaging data can be found in support of both unique mechanistic models and dual route models (Chapter 1) . Two sets of evidence from neuropsychology and normal experimental psychology support the need of independent mechanisms that can account for either imitation of novel, meaningless actions or familiar, meaningful actions..
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