文献一覧: 精密工学会誌 (雑誌)

1 0 0 0 OA 画像特徴点の対応を制約とした疎なLiDAR点群からのOdometry推定 ―ガウス過程回帰による深度推定とその信頼度を考慮したOdometry推定―

著者: 清水政行川西康友出口大輔井手一郎村瀬洋
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.87, no.5, pp.447-454, 2021-05-05 (Released:2021-05-05)
参考文献数: 32

Estimation of translation between consecutive frames, i.e., odometry, plays an important role in autonomous navigation. This paper presents an odometry estimation method using sparse LiDAR points and image feature points. In case of sparse LiDAR measurements, it is difficult to accurately estimate depth at image feature points. Image feature points with low-accuracy depth cause misconvergence in odometry optimization. To improve the robustness to the misconvergence, a new method with a Gaussian process that estimates not only the depth at image feature points but also the variance is proposed. By using this variance, it estimates the residual of image features in the world coordinate with depth, or in the image coordinate without depth. This allows more accurate and robust estimation than conventional methods in case of sparse LiDAR points. In an experiment with simulated sparse LiDAR points from the KITTI dataset, the proposed method is confirmed to estimate the odometry more accurately than conventional methods.

2023-11-08 23:01:53
1 + 0 Twitter

1 0 0 0 OA ヘリコプタのトランスミッション

著者: 山内信義
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.58, no.8, pp.1281-1283, 1992-08-05 (Released:2009-10-08)
参考文献数: 2

2023-10-11 22:22:23
1 + 5 Twitter

1 0 0 0 OA バクテリアによる金属のバイオマシニング

著者: 宇野義幸
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.61, no.10, pp.1389-1392, 1995 (Released:2009-07-23)
参考文献数: 5
被引用文献数: 2 2

2023-09-10 22:21:27
1 + 0 Twitter

1 0 0 0 ナノマイクロ加工を応用したボディ・オン・チップの開発

著者: 平井義和
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.89, no.9, pp.690-694, 2023-09-05 (Released:2023-09-05)
参考文献数: 20

2023-09-05 08:46:36
1 + 3 Twitter

1 0 0 0 OA 今,求められる国プロとは —未来開拓研究について—

著者: 吉田健一郎
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.80, no.1, pp.5-9, 2014-01-05 (Released:2014-01-05)
被引用文献数: 4

2023-08-01 12:52:53
1 + 0 Twitter

1 0 0 0 OA 最大実体公差方式解説 (前編) ―機械製図の(M)とは何か?―

著者: 鈴木伸哉小池忠男
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.84, no.7, pp.620-623, 2018-07-05 (Released:2018-07-05)
参考文献数: 4

2023-07-26 07:32:36
1 + 2 Twitter

1 0 0 0 OA 生命現象を観るレーザ共焦点顕微鏡

著者: 北川純一
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.72, no.11, pp.1331-1334, 2006-11-05 (Released:2009-04-10)
参考文献数: 6

2023-07-25 20:38:21
1 + 0 Twitter

1 0 0 0 OA 動画内の音と映像によるイベント推定タスクにおける時間方向クロスモーダルアテンションの導入

著者: 長崎好輝林昌希金子直史青木義満
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.88, no.3, pp.263-268, 2022-03-05 (Released:2022-03-05)
参考文献数: 10

In this paper, we propose a new method for audio-visual event localization 1) to find the corresponding segment between audio and visual event. While previous methods use Long Short-Term Memory (LSTM) networks to extract temporal features, recurrent neural networks like LSTM are not able to precisely learn long-term features. Thus, we propose a Temporal Cross-Modal Attention (TCMA) module, which extract temporal features more precisely from the two modalities. Inspired by the success of attention modules in capturing long-term features, we introduce TCMA, which incorporates self-attention. Finally, we were able to localize audio-visual event precisely and achieved a higher accuracy than the previous works.

2023-07-24 12:52:36
1 + 1 Twitter

1 0 0 0 OA 技能五輪全国大会機械製図職種 —図面の良否が製品価値の80%を占める—

著者: 磯野宏秋
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.80, no.4, pp.361-364, 2014-04-05 (Released:2014-04-05)
参考文献数: 4

2023-07-07 16:05:13
1 + 0 Twitter

1 0 0 0 地震観測のセンサ(<特集>地震予知と精密工学)

著者: 鹿熊英昭
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.71, no.11, pp.1330-1334, 2005-11-05
参考文献数: 4

2023-07-01 11:49:26
1 + 2 Wikipedia

1 0 0 0 OA 波面補償光学装置AO (Adaptive Optics)

著者: 高見英樹
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.67, no.10, pp.1584-1588, 2001-10-05 (Released:2009-04-10)
参考文献数: 5

2023-07-01 09:40:44
1 + 6 Twitter

1 0 0 0 OA 宇宙機のトライボロジー

著者: 小原新吾
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.86, no.8, pp.586-590, 2020-08-05 (Released:2020-08-05)
参考文献数: 17

2023-06-12 01:30:47
1 + 0 Twitter

1 0 0 0 OA 粒子流動のDEM-CFDシミュレーション技術

著者: 田中敏嗣
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.84, no.7, pp.593-596, 2018-07-05 (Released:2018-07-05)
参考文献数: 15

2023-06-01 23:11:43
1 + 0 Twitter

1 0 0 0 OA 振動法によるコイルばねの温度特性試験

著者: 笠原剛仙田修
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.57, no.4, pp.641-645, 1991-04-05 (Released:2009-10-08)
参考文献数: 8
被引用文献数: 1 1

The spring constant (regression coefficient of force to length of a coil spring) changes with the environment temperature. In this study, new measurement system for small regression coefficients of temperature, “γ” to spring constant of materials for scale springs is developed. The new system (S-E system) measures the natural frequency of self-excited vibration of the spring-weight component instead of their elongation. The accuracy of the system is enough to measure the regression coefficient smaller than 0.1% which is the value required for the scale spring. The S-E system also provides a simple measurement procedure compared to the previous forced-vibration (F-V) method.

2023-05-29 17:58:12
1 + 0 Twitter

1 0 0 0 OA 誘導加熱・冷却金型による射出成形品外観の向上

著者: 村田泰彦木野賢太郎飛田広樹赤池拓也横田太平
出版者: 公益社団法人精密工学会
雑誌: 精密工学会誌 (ISSN:09120289)
巻号頁・発行日: vol.75, no.3, pp.407-411, 2009-03-05 (Released:2010-11-30)
参考文献数: 6
被引用文献数: 8 6

In injection molding, surface defects such as weld-line and silver streaks are serious problems which trouble engineers. It is also known that these surface defects can be prevented by heating the mold cavity surface to above the resin melting point Tm or glass transition point Tg. In this study, we designed and made a rapid heating and cooling mold applying induction heating, which is capable of continuously heating and cooling the cavity surface rapidly. This mold has a cavity insert with coils and cooling channels arranged inside the mold base. Using the mold, heating and cooling molding and normal molding without performing heating and cooling were performed and effects on the external view and surface properties of rapidly heated and cooled molded products were investigated. Observation of the surface of the product molded using this mold showed that in normal molding, the formation of V-shaped weld-lines is seen on the molded product surface. On the other hand, when heating and cooling is performed in molding, no weld-lines are found, and compared to normal molding, a highly glossy molded product surface has been confirmed.