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orb    音標拼音: ['ɔrb]
n. 球,天體,圓形物
vt. 弄圓,成球形,圍著

球,天體,圓形物弄圓,成球形,圍著

orb
n 1: the ball-shaped capsule containing the vertebrate eye [synonym:
{eyeball}, {orb}]
2: an object with a spherical shape; "a ball of fire" [synonym:
{ball}, {globe}, {orb}]
v 1: move in an orbit; "The moon orbits around the Earth"; "The
planets are orbiting the sun"; "electrons orbit the
nucleus" [synonym: {orb}, {orbit}, {revolve}]

Orb \Orb\ ([^o]rb), n. [OF. orb blind, fr. L. orbus destitute.]
(Arch.)
A blank window or panel. [Obs.] --Oxf. Gloss.
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Orb \Orb\, n. [F. orbe, fr. L. orbis circle, orb. Cf. {Orbit}.]
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1. A spherical body; a globe; especially, one of the
celestial spheres; a sun, planet, or star.
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In the small orb of one particular tear. --Shak.
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Whether the prime orb,
Incredible how swift, had thither rolled. --Milton.
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2. One of the azure transparent spheres conceived by the
ancients to be inclosed one within another, and to carry
the heavenly bodies in their revolutions.
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3. A circle; esp., a circle, or nearly circular orbit,
described by the revolution of a heavenly body; an orbit.
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The schoolmen were like astronomers, which did feign
eccentrics, and epicycles, and such engines of orbs.
--Bacon.
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You seem to me as Dian in her orb. --Shak.
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In orbs
Of circuit inexpressible they stood,
Orb within orb. --Milton.
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4. A period of time marked off by the revolution of a
heavenly body. [R.] --Milton.
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5. The eye, as luminous and spherical. [Poetic]
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A drop serene hath quenched their orbs. --Milton.
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6. A revolving circular body; a wheel. [Poetic]
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The orbs
Of his fierce chariot rolled. --Milton.
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7. A sphere of action or influence. --Wordsworth.
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But in our orbs we'll live so round and safe. --Shak
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8. Same as {Mound}, a ball or globe. See 1st {Mound}.
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9. (Mil.) A body of soldiers drawn up in a circle, as for
defense, esp. infantry to repel cavalry.
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Syn: Globe; ball; sphere. See {Globe}.
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Orb \Orb\ ([^o]rb), v. t. [imp. & p. p. {Orbed} ([^o]rbd); p.
pr. & vb. n. {Orbing}.]
1. To form into an orb or circle. [Poetic] --Milton.
--Lowell.
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2. To encircle; to surround; to inclose. [Poetic]
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The wheels were orbed with gold. --Addison.
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Orb \Orb\, v. i.
To become round like an orb. [Poetic]
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And orb into the perfect star. --Tennyson.
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133 Moby Thesaurus words for "orb":
Aldebaran, Canicula, Dog Star, Hesper, Hesperus, Lucifer,
North Star, Phosphor, Phosphorus, Polaris, Sirius, Venus, Vesper,
ambit, area, arena, baby blues, bailiwick, ball, balloon,
banjo eyes, beat, bladder, blob, boll, bolus, border, borderland,
bright eyes, bubble, bulb, bulbil, bulblet, cap of dignity,
cap of maintenance, celestial body, circle, circuit, clear eyes,
comet, cornea, coronet, crown, daystar, demesne, department,
diadem, discipline, domain, dominion, ellipsoid, ermine,
evening star, eye, eyeball, eyelid, field, fixed stars, geoid,
globe, globelet, globoid, globule, glomerulus, gob, gobbet,
goggle eyes, great seal, heavenly body, hemisphere, iris,
judicial circuit, jurisdiction, knob, knot, lamp, lens, lid,
living sapphires, lodestar, march, morning star, naked eye,
nictitating membrane, oblate spheroid, ocular, oculus, optic,
optic nerve, orbit, orblet, organ of vision, pale, peeper, pellet,
polar star, polestar, popeyes, precinct, privy seal,
prolate spheroid, province, pupil, purple, purple pall, realm,
regalia, retina, robe of state, rod, rod of empire, rondure, round,
royal crown, saucer eyes, scepter, sclera, seal, signet, sphere,
spheroid, spherule, starry host, starry orbs, stars, subdiscipline,
tiara, triple plume, unaided eye, uraeus, visual organ, walk,
winker



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  • 为什么工程上选择VINS而不是ORB-SLAM? - 知乎
    orb-slam的最大硬伤就是它用的是orb特征。orb特征除了性能好一些,在各类任务上都没什么优势。不知道有多少研究者仔细测试和比较过,其实传统特征描述子最好的还是sift(而且专利也到期了),后来的没一个能打的。但sift检测开销大也是众所周知的。
  • orb-slam在众多SLAM方法中处于怎样的地位? - 知乎
    特点是以orb特征贯穿始终,从一开始的特征处理,匹配,以及用于回环的bag-of-words,词典,全用的是orb。 下面说说我个人对它的一些看法。 作者从opencv2 4的orb改进了一版,比opencv里的orb多了一个网格处理,尽量保证每小块图像都能提到特征,避免了局部特征点
  • 如何评价Orbstack(在Mac上低开销地运行容器和Linux)? - 知乎
    orb 命令还提供了其他一些特性,比如可以在虚拟机中 push 或 pull 来传输文件。 目前的一些局限 OrbStack 虚拟的 Linux 是不支持 GUI 的,不过这也不妨碍,我想大部分开发应该只会使用命令行去管理 Linux 运行环境吧。
  • 为何要加载orb vocabulary?他的作用是啥? - 知乎
    ORB-SLAM中已经记录了关键帧的BoW vector,并且还对关键帧库以word_id为索引建立了倒排(class KeyFrameDatabase),这样,在查找与查询帧共享足够多words的关键帧时,就不用遍历所有的关键帧了,只要把查询帧描述符映射的那些words索引的关键帧拎出来就可以了。
  • backtracking - Shattering Orbs - Mathematics Stack Exchange
    As a result, all the orbs below that link will fall and shatter What is the expected number of cuts needed until orb 1 is the only remaining orb? Could someone help me with an elegant solution for the same, my solution is below Attempt-Let's call this a Orb(7) Problem So we need to find Expected Cuts in Orb(7) Problem - Cuts(Orb(7))
  • ORB-SLAM为什么要自己写特征提取的代码而不用opencv自带的呢? - 知乎
    orb-slam系列使用fast关键点提取+orb特征描述子做跟踪、重定位、回环检测。在orb-slam几篇论文中,图像特征提取部分都是一带而过,基本没有详细说明特征提取的方法。但是在实际的代码实现中,这部分内容其实还是做了不少工作的。
  • ORB-SLAM3源码阅读笔记 - 知乎
    ORB-SLAM3源码阅读笔记(1)-Examples 一、ORB-SLAM3的整体流程如下图所示: 相比于ORB-SLAM2,主要的改进在于: 加入了单目+IMU模式和双目+IMU模式。 增加了多地图管理,在跟丢时会新建一个地图,从而提高跟踪的鲁棒性。
  • 为什么互联网档案馆 Archive. org 不能用了? - 知乎
    看到互联网分析里面说 Archive org 可以查看网站历史记录,为什么进不去呢?
  • ORB是否解决了尺度不变性的问题? - 知乎
    orb算法从论文上看,并没有引入金字塔解决尺度不变问题! 但是,很多开 源代码 中ORB算法都在高斯尺度空间中进行,当然了你要是觉得高斯不咋地,可以换一种非线性的, 高斯曲率 构建也不错!
  • ORB_SLAM与ORB_SLAM2的区别?还经常出现跟踪失败,跟踪失败的原因及解决方法 - 知乎
    orb_slam与orb_slam2的区别? 还经常出现跟踪失败,跟踪失败的原因及解决方法 我刚开始接触ORB_SLAM,首先是先跑起来看看效果,没发现ORB_SLAM与ORB_SLAM2的有啥区别?





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