入門:Single / Two Rate Three Color Marker (srTCM / trTCM)Kentaro Ebisawa
本資料は、ネットワーク機器で良く使用されるsrTCM / trTCM (single / two rate Tree Color Marker) の初学者のためのガイドとなることを目的としています。
本資料中では、以下3つのRFCに記載された内容を解説したのち、二つの異なるtrTCMアルゴリズムを比較します。
RFC 2697 - A Single Rate Three Color Marker
RFC 2698 - A Two Rate Three Color Marker
RFC 4115 - A Differentiated Service Two-Rate, Three-Color Marker with Efficient Handling of in-Profile Traffic
入門:Single / Two Rate Three Color Marker (srTCM / trTCM)Kentaro Ebisawa
本資料は、ネットワーク機器で良く使用されるsrTCM / trTCM (single / two rate Tree Color Marker) の初学者のためのガイドとなることを目的としています。
本資料中では、以下3つのRFCに記載された内容を解説したのち、二つの異なるtrTCMアルゴリズムを比較します。
RFC 2697 - A Single Rate Three Color Marker
RFC 2698 - A Two Rate Three Color Marker
RFC 4115 - A Differentiated Service Two-Rate, Three-Color Marker with Efficient Handling of in-Profile Traffic
Intro to Single / Two Rate Three Color Marker (srTCM / trTCM)Kentaro Ebisawa
The objective of this document is to provider entry point for people to understand srTCM and trTCM (single / two rate Tree Color Marker).
This document will explain algorithm described in below RFCs, and compare two different algorithm used for trTCM.
RFC 2697 - A Single Rate Three Color Marker
RFC 2698 - A Two Rate Three Color Marker
RFC 4115 - A Differentiated Service Two-Rate, Three-Color Marker with Efficient Handling of in-Profile Traffic
ULTRA project is R&D project for developing very powerful IP traffic engineering system for astronomy data. In Interop Tokyo 2013 ORC, ULTRA project announced the 2nd generation IP router system, "Renjyaku". It has over 100Gbps IP forwarding capability with 7.9usec low latency forwarding architecture.
This system is based on Intel SandyBridge-E micro architecture and offloaded TCP/IP stack on Linux kernel to 10GbE NIC.
ICT are a key infrastructure to establish economic and social systems in the present age.
The Great East Japan Earthquake made a hard impact to ICT facilities that was difficult to continue communication services in the disaster area.
Suspension of communication service made difficult to bind victims and supporters.
Victims is difficult to share with supporters to need help.
And Supporters is difficult to get the situation inside the disaster area.
It is critical issue to provide right support from supporters to victims.
On March 25, 2011, we founded "Pdrnet project: Post Disaster Recovery Internet Project" and provided satellite-based communication system to over 50 shelters in Sanriku coast area.
I address the importance of communication service continuity even collapsed ICT facilities in a disaster area based on knowledge from this project activities.
Intro to Single / Two Rate Three Color Marker (srTCM / trTCM)Kentaro Ebisawa
The objective of this document is to provider entry point for people to understand srTCM and trTCM (single / two rate Tree Color Marker).
This document will explain algorithm described in below RFCs, and compare two different algorithm used for trTCM.
RFC 2697 - A Single Rate Three Color Marker
RFC 2698 - A Two Rate Three Color Marker
RFC 4115 - A Differentiated Service Two-Rate, Three-Color Marker with Efficient Handling of in-Profile Traffic
ULTRA project is R&D project for developing very powerful IP traffic engineering system for astronomy data. In Interop Tokyo 2013 ORC, ULTRA project announced the 2nd generation IP router system, "Renjyaku". It has over 100Gbps IP forwarding capability with 7.9usec low latency forwarding architecture.
This system is based on Intel SandyBridge-E micro architecture and offloaded TCP/IP stack on Linux kernel to 10GbE NIC.
ICT are a key infrastructure to establish economic and social systems in the present age.
The Great East Japan Earthquake made a hard impact to ICT facilities that was difficult to continue communication services in the disaster area.
Suspension of communication service made difficult to bind victims and supporters.
Victims is difficult to share with supporters to need help.
And Supporters is difficult to get the situation inside the disaster area.
It is critical issue to provide right support from supporters to victims.
On March 25, 2011, we founded "Pdrnet project: Post Disaster Recovery Internet Project" and provided satellite-based communication system to over 50 shelters in Sanriku coast area.
I address the importance of communication service continuity even collapsed ICT facilities in a disaster area based on knowledge from this project activities.
セル生産方式におけるロボットの活用には様々な問題があるが,その一つとして 3 体以上の物体の組み立てが挙げられる.一般に,複数物体を同時に組み立てる際は,対象の部品をそれぞれロボットアームまたは治具でそれぞれ独立に保持することで組み立てを遂行すると考えられる.ただし,この方法ではロボットアームや治具を部品数と同じ数だけ必要とし,部品数が多いほどコスト面や設置スペースの関係で無駄が多くなる.この課題に対して音𣷓らは組み立て対象物に働く接触力等の解析により,治具等で固定されていない対象物が組み立て作業中に運動しにくい状態となる条件を求めた.すなわち,環境中の非把持対象物のロバスト性を考慮して,組み立て作業条件を検討している.本研究ではこの方策に基づいて,複数物体の組み立て作業を単腕マニピュレータで実行することを目的とする.このとき,対象物のロバスト性を考慮することで,仮組状態の複数物体を同時に扱う手法を提案する.作業対象としてパイプジョイントの組み立てを挙げ,簡易な道具を用いることで単腕マニピュレータで複数物体を同時に把持できることを示す.さらに,作業成功率の向上のために RGB-D カメラを用いた物体の位置検出に基づくロボット制御及び動作計画を実装する.
This paper discusses assembly operations using a single manipulator and a parallel gripper to simultaneously
grasp multiple objects and hold the group of temporarily assembled objects. Multiple robots and jigs generally operate
assembly tasks by constraining the target objects mechanically or geometrically to prevent them from moving. It is
necessary to analyze the physical interaction between the objects for such constraints to achieve the tasks with a single
gripper. In this paper, we focus on assembling pipe joints as an example and discuss constraining the motion of the
objects. Our demonstration shows that a simple tool can facilitate holding multiple objects with a single gripper.
【DLゼミ】XFeat: Accelerated Features for Lightweight Image Matchingharmonylab
公開URL:https://arxiv.org/pdf/2404.19174
出典:Guilherme Potje, Felipe Cadar, Andre Araujo, Renato Martins, Erickson R. ascimento: XFeat: Accelerated Features for Lightweight Image Matching, Proceedings of the 2024 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) (2023)
概要:リソース効率に優れた特徴点マッチングのための軽量なアーキテクチャ「XFeat(Accelerated Features)」を提案します。手法は、局所的な特徴点の検出、抽出、マッチングのための畳み込みニューラルネットワークの基本的な設計を再検討します。特に、リソースが限られたデバイス向けに迅速かつ堅牢なアルゴリズムが必要とされるため、解像度を可能な限り高く保ちながら、ネットワークのチャネル数を制限します。さらに、スパース下でのマッチングを選択できる設計となっており、ナビゲーションやARなどのアプリケーションに適しています。XFeatは、高速かつ同等以上の精度を実現し、一般的なラップトップのCPU上でリアルタイムで動作します。