Once you get used to use Scala's bigger toolbox it will strike you how much a Java programmer has to please the language instead of solving the problems at hand. But even if your organisation forces you to use Java, learning Scala will change the way you swing your Golden Java Hammer. You'll start to mimic programming concepts that Scala smoothly introduces in your Java code and have pain that some can't be achieved easily. Immutable instances, small methods without side-effects and small classes are signs of a programmer thinking in Scala, even though Java makes it slightly harder to program that way.
The pain comes when you got used to Scala's ways of object composition and the often cited closures.
Java let's you do the same things - if you really want to. Java's boilerplate code will hide what you try to achieve. Achieving programming concepts you have at hand with Scala in pure Java does rarely bear its weight.
In this talk we'll go through some of the things a Scala-trained programmer will start to use in Java. We'll look at the things you can achieve easily and show examples for when you'll miss Scala. A lot.
Once you get used to use Scala's bigger toolbox it will strike you how much a Java programmer has to please the language instead of solving the problems at hand. But even if your organisation forces you to use Java, learning Scala will change the way you swing your Golden Java Hammer. You'll start to mimic programming concepts that Scala smoothly introduces in your Java code and have pain that some can't be achieved easily. Immutable instances, small methods without side-effects and small classes are signs of a programmer thinking in Scala, even though Java makes it slightly harder to program that way.
The pain comes when you got used to Scala's ways of object composition and the often cited closures.
Java let's you do the same things - if you really want to. Java's boilerplate code will hide what you try to achieve. Achieving programming concepts you have at hand with Scala in pure Java does rarely bear its weight.
In this talk we'll go through some of the things a Scala-trained programmer will start to use in Java. We'll look at the things you can achieve easily and show examples for when you'll miss Scala. A lot.
This presentation is based on Joakim\’s experiences from moving from Java to Scala http://www.scala-lang.org/node/960#Joak We will explore how to move from Java to Scala and why. We\’ll look at things that you will run into sooner rather than later such as Scala\’s collection APIs, Options and higher order functions and special syntax. You will leave this presentation with good foundation to use Scala in practice; perhaps even in your current Java project and ideally with an appetite to learn more.
Google App Engine/Java(+ slim3)を使って、Webアプリケーションによくあるいろんな機能を実現するために色々と試行錯誤したことについてのお話。
「GAEだと、この機能はこうやればできるんだ!」ということを少しでも知ってもらって、一人でも多くの方がGAEで何かを作ってもらえるようになればな~、と思っています!
This presentation is based on Joakim\’s experiences from moving from Java to Scala http://www.scala-lang.org/node/960#Joak We will explore how to move from Java to Scala and why. We\’ll look at things that you will run into sooner rather than later such as Scala\’s collection APIs, Options and higher order functions and special syntax. You will leave this presentation with good foundation to use Scala in practice; perhaps even in your current Java project and ideally with an appetite to learn more.
Google App Engine/Java(+ slim3)を使って、Webアプリケーションによくあるいろんな機能を実現するために色々と試行錯誤したことについてのお話。
「GAEだと、この機能はこうやればできるんだ!」ということを少しでも知ってもらって、一人でも多くの方がGAEで何かを作ってもらえるようになればな~、と思っています!
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。