Sökning: "object representation"

Visar resultat 1 - 5 av 161 avhandlingar innehållade orden object representation.

  1. 1. Studies in knowledge representation : modeling change - the frame problem : pictures and words

    Författare :Lars-Erik Janlert; Umeå universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; analogical; artificial intelligence; digital; exemplification; frame problem; Goodman; knowledge representation; metaphysics; model; pictorial representation; symbol theory;

    Sammanfattning : In two studies, the author attempts to develop a general symbol theoretical approach to knowledge representation.The first study, Modeling change -the frame problem, critically examines the - so far unsuccessful - attempts to solve the notorious frame problem. LÄS MER

  3. 2. Safe Robotic Manipulation to Extract Objects from Piles : From 3D Perception to Object Selection

    Författare :Rasoul Mojtahedzadeh; Achim J. Lilienthal; Todor Stoyanov; Abdelbaki Bouguerra; Erik Schaffernicht; Patric Jensfelt; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Object Selection; Object Pose Refinement; Gravitational Support Relation; Inter-penetration Resolving; 3D Ranging Sensor Evaluation; Computer Science; Datavetenskap;

    Sammanfattning : This thesis is concerned with the task of autonomous selection of objects to remove (unload) them from a pile in robotic manipulation systems. Applications such as the automation of logistics processes and service robots require an ability to autonomously manipulate objects in the environment. LÄS MER

  4. 3. Dexterous Grasping : Representation and Optimization

    Författare :Kaiyu Hang; Nancy Pollard; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dexterous Grasping; Hierarchical Fingertip Space; Grasp Planning; Grasp Adaptation; Computer Science; Datalogi;

    Sammanfattning : Many robot object interactions require that an object is firmly held, and that the grasp remains stable during the whole manipulation process. Based on grasp wrench space, this thesis address the problems of measuring the grasp sensitivity against friction changes, planning contacts and hand configurations on mesh and point cloud representations of arbitrary objects, planning adaptable grasps and finger gaiting for keeping a grasp stable under various external disturbances, as well as learning of grasping manifolds for more accurate reachability and inverse kinematics computation for multifingered grasping. LÄS MER

  5. 4. Learning Structured Representations for Rigid and Deformable Object Manipulation

    Författare :Michael C. Welle; Danica Kragic; Dimitry Berenson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Representation learning; Object Manipulation; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : The performance of learning based algorithms largely depends on the given representation of data. Therefore the questions arise, i) how to obtain useful representations, ii) how to evaluate representations, and iii) how to leverage these representations in a real-world robotic setting. LÄS MER

  7. 5. Visual Representations and Models: From Latent SVM to Deep Learning

    Författare :Hossein Azizpour; Stefan Carlsson; Barbara Caputo; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Computer Vision; Machine Learning; Artificial Intelligence; Deep Learning; Learning Representation; Deformable Part Models; Discriminative Latent Variable Models; Convolutional Networks; Object Recognition; Object Detection; Computer Science; Datalogi;

    Sammanfattning : Two important components of a visual recognition system are representation and model. Both involves the selection and learning of the features that are indicative for recognition and discarding those features that are uninformative. LÄS MER