火星归来，Terence Tao的算法是不是可以用在DSLR里 - 未名空间MITBBS历史存档

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火星归来，Terence Tao的算法是不是可以用在DSLR里

火星归来，Terence Tao的算法是不是可以用在DSLR里# PhotoGear - 摄影器材

l*i2010-12-02 08:12

1 楼

贴出来给大家看看，也算是笑笑。我只是问问她我要不要interfile而已,一个月前问的
问题，中间催问了３次都不回复. 降级USCIS 还要收additional fee？
顺便问一下，我EB3 140已批准；485是去年7月和EB2的140交上去的，EB2 140还没批。
PD 11/2012 RD 7/2015， TSC。我这个情况，还需要降回EB3么,
To provide best advice and counsel to you, I have reached out to a colleague
on the DOS liaison committee to ascertain likely future movement in the
Visa Bulletin.
I apologize for not keeping you abreast of these efforts, but should have
all data as would be helpful to you to make the decision, before you expend
additional filing fees on what could be an additional filings with
Immigration. I have engaged in this effort outlined above on a
complimentary basis for no additional charge.
I would recommend having a telephonic consultation to discuss pros/cons of
leaving your case is versus additional filing. I would ask for you to
compensate for the time of the telephonic consultation, at which time we can
also address fees for the potential additional filing. It should be under
half of an hour; my hourly rate is $325/hour.
Given the once-a-year H cap workload we are in the midst of, I would ask for
your kind patience in scheduling.

G*Y2010-12-02 08:12

2 楼

问问？虽然我不懂，但是既然可以改进MRI，离照相也不远了。
这斯太NB了，21岁普林斯顿毕业。
他这个和Candes合作的算法，跟得Fields奖的东西应该是两码事儿，
http://www.wired.com/magazine/2010/02/ff_algorithm/all/1
这个东西本身，基本上又开启了一个新领域呀。有点Shannon的感觉了。

l*i2010-12-02 08:12

3 楼

看了下TSC的进度还没有到2012 8月，我觉得，这个时间等等140批下来。。。这样想，
有道理么？

colleague
expend

【在 l****i 的大作中提到】

: 贴出来给大家看看，也算是笑笑。我只是问问她我要不要interfile而已,一个月前问的
: 问题，中间催问了３次都不回复. 降级USCIS 还要收additional fee？
: 顺便问一下，我EB3 140已批准；485是去年7月和EB2的140交上去的，EB2 140还没批。
: PD 11/2012 RD 7/2015， TSC。我这个情况，还需要降回EB3么,
: To provide best advice and counsel to you, I have reached out to a colleague
: on the DOS liaison committee to ascertain likely future movement in the
: Visa Bulletin.
: I apologize for not keeping you abreast of these efforts, but should have
: all data as would be helpful to you to make the decision, before you expend
: additional filing fees on what could be an additional filings with

T*r2010-12-02 08:12

4 楼

可以用在侦察卫星里么？

【在 G**Y 的大作中提到】

: 问问？虽然我不懂，但是既然可以改进MRI，离照相也不远了。
: 这斯太NB了，21岁普林斯顿毕业。
: 他这个和Candes合作的算法，跟得Fields奖的东西应该是两码事儿，
: http://www.wired.com/magazine/2010/02/ff_algorithm/all/1
: 这个东西本身，基本上又开启了一个新领域呀。有点Shannon的感觉了。

P*l2010-12-02 08:12

5 楼

wow, $325/hour. I also want to be an immigration lawyer.
It doesn't hurt to call or do a SR to make sure.

G*Y2010-12-02 08:12

6 楼

...
Candès can envision a long list of applications based on what he and his
colleagues have accomplished. He sees, for example, a future in which the
technique is used in more than MRI machines. Digital cameras, he explains,
gather huge amounts of information and then compress the images. But
compression, at least if CS is available, is a gigantic waste. If your
camera is going to record a vast amount of data only to throw away 90
percent of it when you compress, why not just save battery power and memory
and record 90 percent less data in the first place? For digital snapshots of
your kids, battery waste may not matter much; you just plug in and recharge
. “But when the battery is orbiting Jupiter,” Candès says, “it’s a
different story.” Ditto if you want your camera to snap a photo with a
trillion pixels instead of a few million.
The ability to gather meaningful data from tiny samples of information is
also enticing to the military: Enemy communications, for instance, can hop
from frequency to frequency. No existing hardware is fast enough to scan the
full range. But the adversary’s signal, wherever it is, is sparse — built
up from simple signals in some relatively tiny but unknown portion of the
frequency band. That means CS could be used to distinguish enemy chatter on
a random band from crackle. Not surprisingly, Darpa, the Defense Department
’s research arm, is funding CS research.
...
应该可以

【在 T********r 的大作中提到】

: 可以用在侦察卫星里么？

y*o2010-12-02 08:12

7 楼

interfile/relink可以自己做，不需要律师。模板自己置顶帖里找。

N*w2010-12-02 08:12

8 楼

这玩艺是不是跟白噪声叠加抵消类似阿

【在 T********r 的大作中提到】

: 可以用在侦察卫星里么？

l*i2010-12-02 08:12

9 楼

嗯嗯，可是没有140的号

【在 y*******o 的大作中提到】

: interfile/relink可以自己做，不需要律师。模板自己置顶帖里找。

N*w2010-12-02 08:12

10 楼

偶觉得适合低频图像处理
用来磨皮最合适了
高频图像这么搞显然会丢失很多细节

memory
of
recharge

【在 G**Y 的大作中提到】

: ...
: Candès can envision a long list of applications based on what he and his
: colleagues have accomplished. He sees, for example, a future in which the
: technique is used in more than MRI machines. Digital cameras, he explains,
: gather huge amounts of information and then compress the images. But
: compression, at least if CS is available, is a gigantic waste. If your
: camera is going to record a vast amount of data only to throw away 90
: percent of it when you compress, why not just save battery power and memory
: and record 90 percent less data in the first place? For digital snapshots of
: your kids, battery waste may not matter much; you just plug in and recharge

l*u2010-12-02 08:12

11 楼

colleague
expend
$325/hr 这是申请火星移民吗？

【在 l****i 的大作中提到】

G*Y2010-12-02 08:12

12 楼

不懂呀，最近正在研究。
肯定也不是万能的，
大概就是说如果你要100M的照片，
大概10M的Sensor足够了。
照相这个应用应该是比较简单的，
因为你可以选在sensors放在哪。
而且噪音估计也不是很大。
这里面就觉得Candes很能忽悠，
Tao数学很NB。

【在 N****w 的大作中提到】

: 这玩艺是不是跟白噪声叠加抵消类似阿

k*a2010-12-02 08:12

13 楼

It reconstruct the details by guessing then prove the result is
mathematically optimal under some assumptions/conditions. I am skeptical
about its application in amateur/professional photography since many areas
in a photo can be out of focus.

【在 N****w 的大作中提到】

: 这玩艺是不是跟白噪声叠加抵消类似阿

G*Y2010-12-02 08:12

14 楼

你说的那些更像FF啥的，
他这个可能不太一样。
不够Tao搞调和分析，估计这些东西多少有点联系。

【在 N****w 的大作中提到】

: 偶觉得适合低频图像处理
: 用来磨皮最合适了
: 高频图像这么搞显然会丢失很多细节
:
: memory
: of
: recharge

G*Y2010-12-02 08:12

15 楼

我觉得一个数量级的优化还是可能的。
另外一个paper里，他们大概就是说他们的结果，应该比Shannon, Nyquist啥的还NB，
当然是在特定的假设下。这是摘要：
Conventional approaches to sampling signals or images follow Shannon's
theorem: the sampling rate must be at least twice the maximum frequency
present in the signal (Nyquist rate). In the field of data conversion,
standard analog-to-digital converter (ADC) technology implements the usual
quantized Shannon representation - the signal is uniformly sampled at or
above the Nyquist rate. This article surveys the theory of compressive
sampling, also known as compressed sensing or CS, a novel sensing/sampling
paradigm that goes against the common wisdom in data acquisition. CS theory
asserts that one can recover certain signals and images from far fewer
samples or measurements than traditional methods use.

【在 k******a 的大作中提到】

: It reconstruct the details by guessing then prove the result is
: mathematically optimal under some assumptions/conditions. I am skeptical
: about its application in amateur/professional photography since many areas
: in a photo can be out of focus.

k*a2010-12-02 08:12

16 楼

Now I had time think about it, in fact, the Bayer Filter Demosaic process
can be considered as a simple form of the very problem this method solves.
In that sense the algorithm can help to do camera raw conversion.
Not sure about in camera use due to its performance; maybe in post-
processing only.
This is not the first of such algorithms. A Japanese company does similar
things and they have consumer software for up-sampling and raw-conversion.

【在 k******a 的大作中提到】

i*e2010-12-02 08:12

17 楼

那幾張圖是simulation而已，實際效果如何？