y*********e
发帖数: 7269 | 1 ☆─────────────────────────────────────☆
anoia (阿诺,不能再这么烧器材了,痛定思痛) 于 (Sat Mar 31 21:23:22 2007) 提到:
条件如下
规定构图比例是3：2（135的）
系统一：中副，但是在底片上画个frame，限定了一个3：2的cropping ratio以方便
跟135系统的比较。现在有一个中副镜头lensA
系统二：135，有个135镜头lensB
field of view：lens A＝lens B
现在用系统一和系统二，对一群物体拍摄（有远有近），采用完全相同的构图（
cropping）
这个时候，拍出来的照片perspective是一样还是不一样（不考虑DOF,DISTORTION）
我的意见是，perspective只跟距离有关，相同的构图的情况下，FOV相同的系统
距离相同，perspective不变。
简单说，距离决定perspective，镜头的焦距则决定cropping
而shadowleaves的意见是中副的因为底片大小变了，所以perspective会有变化
（如果我没有理解s |
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p********e
发帖数: 16048 | 2 【 以下文字转载自 PhotoGear 讨论区 】
发信人: projective (前丐帮问题少年), 信区: PhotoGear
标 题: PS里的修改perspective似乎有问题？
发信站: BBS 未名空间站 (Tue Jun 8 09:01:35 2010, 美东)
正常的perspective control应该是两个自由度的
也就是镜头指向的方向
但是ps里的perspective可以有n个自由度
很多结果不可能在镜头里出现 而需要再次从某个方向scale才可以是真实的
有没有一个perspective功能可以只限制两个自由度的？(就像google map里的street
view) |
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M*****e
发帖数: 279 | 3 SAIS scholar of Cuban foreign policy offers perspective on historic shift in
U.S.-Cuba relations
http://hub.jhu.edu/2014/12/18/us-cuba-foreign-relations
Piero Gleijeses, professor of American foreign policy, is only foreigner to
conduct research in closed Cuban archives
December 18
Posted in Voices+Opinion, Politics+Society
Tagged foreign policy, cuba
On Wednesday, President Barack Obama announced a historic shift in U.S.
relations with Cuba, a move to normalize diplomatic relations bet... 阅读全帖 |
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p********e
发帖数: 16048 | 4 正常的perspective control应该是两个自由度的
也就是镜头指向的方向
但是ps里的perspective可以有n个自由度
很多结果不可能在镜头里出现 而需要再次从某个方向scale才可以是真实的
有没有一个perspective功能可以只限制两个自由度的？(就像google map里的street
view) |
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v**********m
发帖数: 5516 | 5 http://m.f1000research.com/articles/3-291/v1
波士顿地区的千老联合会的报告，文章提到的问题非常典型和深刻，该文已经在圈内得
到了包括大佬们的极大肯定(恐惧)。
OPINION ARTICLE
Shaping the Future of Research: a perspective from junior scientists[v1;
ref status: approved 1, approved with reservations 1,http://f1000r.es/4ug]
Gary S. McDowell1*, Kearney T. W. Gunsalus2*, Drew C. MacKellar3, Sarah A.
Mazzilli4, Vaibhav P. Pai1, Patricia R. Goodwin5, Erica M. Walsh6, Avi
Robinson-Mosher7, Thomas A. Bowman8, James Kraemer9, Marcella L. Erb10, Eldi
Schoenfeld1... 阅读全帖 |
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d*******l
发帖数: 2567 | 6 看了下他们的说明，对下面最后一句有点不太明白，谁能帮着解释一下？
The author(s) may demonstrate key developments through presentation of new
unpublished data. A Perspective should offer new insights into an area; this
might be through the presentation of such new data, or a new technique, or
a critical assessment of existing information. A Perspective can accommodate
a wide spectrum of emphasis
between the limits of review material and new research.
～～～～～～～～～～～～～～～～～～～～～～～? |
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j*********g
发帖数: 2 | 7 【 以下文字转载自 JobMarket 讨论区 】
发信人: jobdreaming (job and job), 信区: JobMarket
标 题: Perspective PhD at the Georgia Institute of Technology on Intelligent Transportation System (ITS)
关键字: Georgia Tech,CEE,James,ITS,Sensing
发信站: BBS 未名空间站 (Thu May 5 10:24:40 2011, 美东)
RE: Perspective PhD at the Georgia Institute of Technology on Intelligent
Transportation System (ITS) and Innovative Sensing Technology Development
Georgia Institute of Technology (Georgia Tech) is one of the top 4
engineering schools and... 阅读全帖 |
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c*********5
发帖数: 23 | 8 A Professor’s Perspective on Different Careers
Jun Liu
Professor in Statistics, Professor in Biostatistics,
Harvard University
Time: 2:00-3:30pm, Nov 6, 2010
Location: Room220, School of Management, Boston University
595 Commonwealth Ave, Boston, MA 02215
Schedule: 2:00 – 2:10 Speaker Introduction
2:10 – 2:50 Presentation
2:50 – 3:30 Q&A
This seminar is open to everyone interested, NOT limited to PKU
alumni. The presentation will be in Chinese.
RSVP is highly recommended: https://spreadsheets.go... 阅读全帖 |
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x*s
发帖数: 67 | 10 The meaning of "perspective" here is, as defined in Merriam-Webster, "the
capacity to view things in their true relations or relative importance." The
phrase means to see things in their true relations with with others, don't
view trivial things more important than they are or significant things less
important than they are.
Examples:
1. Referring to the Fort Hood shooting, a researcher said "It's important to
keep it in perspective in its size and dangerousness, which I think are
generally over |
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d*****d
发帖数: 10658 | 11 赞！学到很多。可以说现代艺术就是摒弃单一视角linear perspective，而代之以
multiple perspectives是吗？这与二十世纪文学中的多重语言叙事(heteroglossia)和
政治哲学中的nomadic multitudes很吻合。 |
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i***a
发帖数: 11826 | 12 嗯，写生的，透视观都是几门素描课和练习中养成的习惯。。。比如手伸直拿笔目测、
形状对比、位置距离对比。。。等等，三维的画在二维效果里。
理论不太好讲，所以搜了相关视频。第一个是英文的，西方的perspective，主要是
linear perspective,10分钟讲的非常清楚，可以快速看完，整体和基础技法认识。
第二个长的video，是中国美院的老师讲的，评价很高。我还只有空看了开始10分多钟
，。。。看完，应该会对西方艺术中整个透视的历史和技法，有更深刻的认识啦~~ |
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i***a
发帖数: 11826 | 13 嗯，我猜应该是早期翻译的问题。。。在文艺复兴时期，透视的最早时代，艺术家是用
玻璃放置在物体和画布之间，在玻璃上描绘物体的具体位置，再翻到画布上。所有有个
“透”视的意思。。。
perspective还不算翻译奇怪的，更好玩的是composition，指如何把物体等放置在画面
上。。。。中文翻译成“构图”，讲的还特复杂。。
还有negative space，中文对应“留白”，对应好很多。。。
perspective是角度的意思。。。为神马翻译成了透视呢？。。。。。 |
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a*****g
发帖数: 19398 | 14 我最近要修几门 3,4 level 的中文类课程
想从中国的大学网络方式修课，然后拿去 Educational Perspectives 认证一下。
想问一问哪位在 Educational Perspectives 认证过的
看看到底哪些学校比较认可，可以拿到相应的学分。 |
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N********n
发帖数: 8363 | 16 【 以下文字转载自 Stock 讨论区 】
发信人: NeverLearn (24K Golden Bear), 信区: Stock
标 题: Perspective
发信站: BBS 未名空间站 (Thu Jun 10 23:22:55 2010, 美东)
FINANCIAL CRISIS => ECONOMIC CRISIS => POLITICAL CRISIS
Banking Crisis Sovereign Debt Crisis Currency Crisis |
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a*********a
发帖数: 3656 | 17 survey done in 2013 on 15,000 verified law enforcement professionals. these
are real police officers not elected sheriff chiefs who are more politician
than law enforcement.
https://www.policeone.com/Gun-Legislation-Law-Enforcement/articles/6183787-
PoliceOnes-Gun-Control-Survey-11-key-lessons-from-officers-perspectives/
1.) Virtually all respondents (95 percent) say that a federal ban on
manufacture and sale of ammunition magazines that hold more than 10 rounds
would NOT reduce violent crime.
2... 阅读全帖 |
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d*******l
发帖数: 2567 | 18 收到一个IF有6的杂志邀请写Perspective，从何着手？要放新结果吗？
坦率的说，对那个题目没多少深入的见解。 |
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t*******r
发帖数: 364 | 19 手贱，今天接了一个Perspective Article的review invitation。manuscript全文2页
纸1000个character，9个参考文献。杂志影响因子IF~6 |
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j*****h
发帖数: 3292 | 20 请问一下
From Tax perspective, Invest in REIT in traditional IRA a good strategy?
平时是不是不需要交高的税，退休时取出来用的时候，只需要根据当时的income tax
brackets, 交税？？ |
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j*********g
发帖数: 2 | 21 RE: Perspective PhD at the Georgia Institute of Technology on Intelligent
Transportation System (ITS) and Innovative Sensing Technology Development
Georgia Institute of Technology (Georgia Tech) is one of the top 4
engineering schools and top 3 civil and environmental engineering schools in
the US. We are interested in PhD students, Post-doc students, and visiting
research scholars who are self-motivated and have strong backgrounds in the
following areas:
• Development of intelligent se... 阅读全帖 |
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N********n
发帖数: 8363 | 22 The point is to put things into perspectives. |
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d*****s
发帖数: 5610 | 23 “The 15th S&P 500 correction of at least 10% since 1975 has shifted
client conversations to valuation support. The current correction is 12%
below the April high and modestly smaller than the 18% average of past
corrections. We see support in strong earnings and past valuation bottoms
but lower our 2011 year-end price target to 1400 and 2012 EPS estimate to $
102 due to slower global GDP estimates from our global Economists.
The current S&P 500 correction is the 15th such pullback since ... 阅读全帖 |
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z***i
发帖数: 383 | 24 一般杂志都有perspective文章评论本issue内的一片或几篇文章。这选中的文章是谁挑
选的？有人知道么？ |
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q**u
发帖数: 12289 | 25 Flew up yesterday morning from St. Louis without tickets for this weekend (
we got in - more on that to follow) in Detroit and thought I would offer a
Cardinals fan's perspective of the action last night and this morning -
My girlfriend and I got down to Comerica Park about 2 hours before game time
looking for tickets on the street (we had tried all day online, on
Craigslist, Ticketmaster, etc. to no avail) and we walked around and took in
the atmosphere for a good hour and a half before we got |
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k***z
发帖数: 3522 | 26 【 以下文字转载自 Ski 讨论区 】
发信人: kolaz (...), 信区: Ski
标 题: Avalanche, from Different Perspectives
发信站: BBS 未名空间站 (Thu Apr 28 12:52:43 2011, 美东)
Need to share this powerful video.
When ski in backcountry, be WELL prepared!
http://vimeo.com/22462953 |
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o**s
发帖数: 3412 | 28 Thanks Judsonzhao,
dof = 景深 and perspective = 透视, right?
The first situation, the frame will be the same, but different dof, 2nd
situation, frame is different since the distance of lens to subject changed,
correct?
Now i just have to figure out how/why the dof differ. |
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J********o
发帖数: 17447 | 31 correct
no matter it's a 6mm or 600mm lens, if the subject distance is fixed, you
will get the same perspective, but different frames.
I |
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o**s
发帖数: 3412 | 32 man this stuff is hard - perspective and composition. |
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c*x
发帖数: 555 | 33 This kind of puts things in perspective. If we could shrink the earth's
population to a village of precisely 100 people, with all the existing
human ratios remaining the same, it would look something like the
following.
There would be:
57 Asians
21 Europeans
14 from the Western Hemisphere, both north and south
8 Africans
52 would be female
48 would be male
70 would be non-white
30 would be white
70 would be non-Christian
30 would be Christian
89 would be heterosexual
11 would be homosexual
6 p |
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i***a
发帖数: 11826 | 34 版上经常有些同学们提到透视的问题，或者有的绘画作品中，透视的规范不是很完全。
快速总结下透视吧~：）
透视（perspective)，是文艺复兴达芬奇以后，西方绘画逐渐总结出来的规范。
在文艺复兴前，是没有严格透视的，比如古代的绘画，人物眼睛的位置，一直到古希腊
、罗马时代才逐渐出现侧脸表达规范。
而在现代艺术之后，透视也可能被刻意变形，多角度混合、叠加，比如毕加索《亚威农
的少女》、杜桑《下楼梯的裸女》等等，不一而足。
透视一直是西方艺术进阶的最基础之一，传统油画、素描都基于透视。
透视，主要指如何将三维世界，反映到二维的绘画平面上。比如拍照时，照片上的道路
、人物。。。等，都符合透视原理，近大远小，近景实远景虚。绘画时亦如此，近处用
笔要实，远处用笔要虚。。。
艺术类的透视，基本是大量素描写生写实练习出来的。写生时，认真观察物体，会发现
平行边，在表达上会不平行。俯视、仰视、平视。。。不同位置。。。不同角度。。。
。物体各尺寸、位置如何，长期练习，画出来才理解三维效果。
对于非写实的同学们，如何理解和练习透视呢?
我找了个10分钟的英文video，解释的比较清楚，建议先看完，可以从... 阅读全帖 |
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d********n
发帖数: 3477 | 35 文盲不懂也来听依依讲学。。。咳咳。。。。假装看懂了问个问题：这里感觉解释的
perspective是角度的意思。。。为神马翻译成了透视呢？。。。。。 |
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t**********s
发帖数: 930 | 36 【 以下文字转载自 Java 讨论区 】
发信人: tennisalways (tennisforever), 信区: Java
标 题: 有谁读过Design Patterns Explained: A New Perspective on Object-Oriented Design?
发信站: BBS 未名空间站 (Wed May 30 20:40:43 2007)
觉得是本好书，但发现了几处我觉得是错误的地方。
谁能和我站内讨论？
谢谢 |
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d********r
发帖数: 3279 | 38 需要写一个关于 using optogenetics in invertebrates 的 Perspective review
大家有什么点子没？
what's going on in this field now?
what are people doing?
where is this all going?
谢啦！ |
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b********e
发帖数: 215 | 40 在mergers and acquisitions: the industrial organization perspective这本书中
，附着有mergersim.exe，它是一个并购模拟分析软件，谁有的能不能给我一下，不胜
感激。 |
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l******d
发帖数: 3 | 41 各位大侠，谁有下面书的英文版：
Learning Theories: An Educational Perspective (5th Edition) by Dale H Schunk
急需用，谢谢了！ |
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k*****e
发帖数: 372 | 42 原帖地址：http://www.studentdoctor.net/2010/10/residency-interviews-consider-the-
attending%E2%80%99s-perspective/
By Dr. Jessica Freedman
Author of The Residency Interview: How to Make the Best Possible Impression
。。。
Read about the residency and departmental leadership before your interview
Inevitably, the residency leadership (program director and associate program
director) will play a large role in
each interview day. Probably other departmental leadership, such as the
chairperson, research dire... 阅读全帖 |
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h*****f
发帖数: 80 | 43 How about the career perspective for Medicinal and Nature Product Chemistry?
Comparing with pharmacology, toxicology, and pharmaceutics?
Thanks. |
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k***g
发帖数: 7244 | 44 呵呵，Charles Tilly 现在就是横跨社会学与政治学啊，这个 Perspective on
Politics 基本上就是最新的政治类学术著作的书评，这一期有人评论Tilly的 Trust
and Rule，而 Tilly也有一篇评论 Douglas North 的 Understanding the Process of
Economic Change，牛啊。不过这个North也算横跨政治学与经济学两个领域了，呵呵
，你们都来和学政治的抢饭碗，俺们怎么活啊：） |
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d*****r
发帖数: 39446 | 45 【此篇文章是由自动发信系统所张贴】
Perspective 申请加入本俱乐部的请求已经通过审批, 成为本俱乐部的正式成员, 特此通知. |
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s***h
发帖数: 372 | 46 Dear God,
I need Your guidance.
Bring perspective to my life,
for the meaningless allures
of this world
control me.
Let me see beyond
the coarse requirements
of my daily subsistence.
Let me bask
in that which is truly precious---
in the beauty of my relationship
with You, dear God." |
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f**d
发帖数: 768 | 47 这是一本计算神经科学的优秀著作，全文拷贝这里（图和公式缺），有兴趣的同学可以
阅读
如需要，我可以分享PDF文件（－－仅供个人学习，无商业用途）
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖 |
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