旧金山日本五年多次往返签证申请经验

这里我总结一下自己在旧金山日本领馆签证的经验。旧金山日领馆负责加州中北以及内华达的签证服务。而且要求是自己来递签。

第一,材料准备。这个网站总结的很好:https://piao.tips/japan-multi-visa-in-the-us-san-francisco/。不过我自我的感觉下来还是有东西要强调一下。

官方网站找到了很贴心的,针对不同国籍的签证check list:https://www.sf.us.emb-japan.go.jp/itpr_en/e_m02_01_04.html

个人在面签时候是完全按照这个check list收材料的,不多不少。与上面驴友总结的稍有不同,那个自己的一封信说明要多次签证理由的信还蛮重要,真的被收走了。而且上文驴友那一份是针对以前去过日本再签写的,所以不要照抄哈。

关于申请表格,第一页名字除了写英文,还要在相应地方写中文的汉字,反面签名我也是用汉字签的。注意日本表格的时间写法,DD/MM/YY而不是一般的月份开头。

关于check list 里面第6条财产文件,我是两个都准备了。pdf里面强烈说明了如果是选择出工作证明+最近工资单,那么工作证明不能是Offer letter。各个公司开工作证明的方法不一。以Amazon为例,在内网搜索Employment Verification可以很容易找到拿到工作证明的步骤,网上操作就可以,不需要联系HR。注意default pin哈。

至于多数面经里面提到的机票打印和旅店订单,行程计划,大使馆工作人员倒没有问我要。不过我还是有准备了。注意酒店订单一定要有自己的名字。最好自己定可以退的那种,用来签证就够。之后再退掉。免得上面有多个名字或者没有你的名字,万一签证官看到了还给自己找麻烦。

在面签过程中,签证官有问在日有没有朋友,建议说没有。否则会要求写出很详细的对方的信息。

整个签证过程很快,大概5分钟。之后会收到一个收据,5个工作日后凭收据来大使馆窗口领取护照。记得带正确金额现金(收据上会写明金额),不找零的,感觉也不能信用卡支付。

如果不想再跑一趟而且市里也有朋友的话,可以找人带领。只要你在收据上写好代领人的名字,并且用中文签你自己的名即可。中文前面的原因是表格要求签名必须和你护照签名吻合。是中国护照所以还是签中文吧。代领人的名字感觉得写英文,因为代领人要出示photo ID,如果代领人用美国驾照,那当然只有英文了。日本人办事很中规中矩,所以按规矩比较好。

交通

大使馆早上9点30开门,如果从南边过去,建议坐早上7-8点的caltrain,直到旧金山终点。然后走两分钟去坐10号公交。这个通勤在Google Map上可以搜到。旧金山公交票是2块75,交费后会得到收据,2小时内换乘都是免费的。所以理论上如果大使馆人不多可以来回到Caltrain终点。我签证一共花了大概1小时,到大使馆的时候领取的号码是15号,而刚到的时候才开始办1号。大概是这个速度。

 

中国护照旧金山领馆换发

本篇主要记录了在旧金山领馆换发护照的过程。所提供的信息基于2017年的情况,所以请在官网查看最新细则。

1.网上预约

a. 使馆目前应该只接受网上预约,从目前情况看,一约就是2个月以后。所以请根据自己的情况提前预约。

b. 提交照片是一个超级头疼的事情,预约系统会允许照片提交,但是是否合格在最后才会告诉你,而且不合格信息十分模糊。试了超级多次才能过关。其实你在这一步不提交也可以,领馆内有专用自拍机,10刀四张,满足护照标准大小,可以给你省心一些。所以只要记得到了预约时间穿深色衣服弄得美美的去拍照就行。

我的情况是正好有朋友从国内来,所以可以让他们按国内证件照标准洗4张给我所以才尝试网上提交的。在美国洗国内标准的照片应该不容易,但是网上应该有其他达人告知怎么冲洗,请各位自己去查。这里我仅介绍如何顺利提交数字照片。

首先,请给出正面,不笑,有眼镜的不要遮住眼睛,深色衣服的免冠照。你可以用手机用白墙为背景拍,记得光线要充足。

接着,请把头像裁剪成354 pixel x 472 pixel 大小。虽然预约系统允许你缩放,移动,但是亲测结果表明,你的照片只有是正好match他的模板,才有可能通过。你在里面做的平移,缩放等都代表照片可能不合格。还有要注意你裁剪照片时候眼睛的位置。

调整好后,你会发现提交可能还是失败,原因可能是你的背景不够白。我建议可尝试在photoshop里直接魔术棒把自己抠出来然后刷白背景,这样应该就可以通过了。

c. 提交完毕请彩色打印表格准备当天带去领馆。同时记得冲洗4张照片,按照要求大小哦。

2. 申请邮寄护照服务(如果自己去取,请跳到step 3)。

如果你不打算自己再回市里面领取护照,你可以申请邮寄服务。由于邮寄只接受money order或者cashier check,你最好把护照制作费和邮寄服务费一起做一张money order 或者 cashier check。其实即便你是自己去取,我也建议办money order 或者cashier check,因为排队信用卡付钱真的队伍好长。。。如果有check办好了的话,直接在提交表格的时候交给使馆人员就可以走了。

根据个人情况不同,money order或者cashier check需要手续费。因为money order手续费一般低一些,而且你要去拿信封和邮票,所以建议就都去邮局办money order吧。信封取USPS 的express 就可以,邮票应该是美国express统一价,$6.25。 请同下图一样贴在封口处,使馆人员可不会帮你贴。同时记得向邮局人员索要tracking label,如果你的邮票上本身没有 tracking 信息。tracking label 分两部分,上面都有一样的tracking number,你可以一个贴在信封上,一个自己留着用于查找。

所以money order 需要开具30美金,即目前护照制作费25 + 使馆邮寄费 5。

3. 当天注意事项。

记得带好需要的材料:

a. 旧护照

b. 护照所有有内容页面 (visa, 海关戳)的彩色复印件

c. 预约生成的表格

d. 照片4张(如果不是现场照)

e. 贴邮票的信封

f. money order

g. 最近一次出关的I94 (不带也没有特别大关系)

如果开车前往,记得看清路边牌子!!!使馆侧面的上坡路一侧是周五12点到下午不能停车。进入使馆后再4或者5号窗口排队。如果没有照相的朋友可以在进入护照办理处以后拍照再去排队。建议按你预约时间提前半小时进入领馆。

轮到你了以后,客客气气的把表格交给工作人员,提交相应材料。然后按指纹,签数字签名。他们收取信封以后会整理你的资料。然后一般官方是一个月以后会寄给你新旧护照(旧护照会剪角注销)。我的情况是3周就收到了。

ARBA: Augmented Reality Bay Area meetup

On Jan 24, 2017, we joint the first Augmented Reality meetup hosted at the Runway Incubator in San Francisco. This is also the first time I went to the meetup. 

So the above company basically creates a Kinect which can work with VR headset to produce body tracking.

This is an interesting device, a company named ultrahaptics creates a ultrasound matrix (where the green dot is under the palm), which give air pressure based on the computer display. In VR, this makes feeling the virtual object possible. However, a plane only gives force from one direction. To resolve this issue, a cube-shape array can be created with the blocks. This could be a good plugin for automobile control panel where ultrahaptics can provide feeling of real buttons so people don’t need to look at the panel while driving.

Wearing HoloLens in daily life really need a strong mind! All right, the presentation starts. First, Occipital demonstrates a smart mixture of AR/VR. They created a headset for Iphone. The headset also includes a depth camera. In the demo, they showed that how the depth camera can used to scan a room to create a 3D mesh model for that space. Then the texture is created from the iphone camera. After generating the 3D mesh of the space, the model is loaded into the VR set so it becomes a AR environment. In my opinion, this is an offline real world mapping trick that take advantage of the 3D reconstruction functions. As a result, the system may not ready to process real time point cloud data.

 

Next company Yowza shows a new idea to convert our real living space into digital world. In their idea, the raw mesh of the space is captured and uploaded to their cloud, then the point cloud is segmented and classified to different, completed furnature model in the dataset. Then the 3D models replace the raw mesh and ideally create a completed 3D scene for VR environment. 3D object recognition and 3D segmentation are hot topics in SIGGRAPH and CVPR. This company’s idea will be a very good feature for VR.

The last demo is a Tango based one from Clever Robot Labs. It analyzes the 3D point cloud from Tango phone to recognize the ceiling, floor, table, bed, etc in real time. Then it can replace them with VR contents dynamically. Interestingly, the algorithm can replace the real table based on the point cloud to scale the virtual table. Please see the video for the result.

After that, some new member also introduce themselves and also pop some job information. It is a very nice experience. Focusing more on technical side. And I am also glad that our CEO An Li has a good conversation with Ori Inbar. Hope that we can also join AR meetup in this year!

I485 timeline

So luckily get the message of acceptance of my I485 application just before the price increase. Hope everything can go smoothly so we can get it done before summer of 2017. On this post I will update my timeline for the I485 process. For my I140 EB1A, I use PP directly so I submit application on Nov 20, 2016 and get approved notice on Nov 30, 2016. Then I spent 1.5 weeks for I485 preparation and health check, I mailed my package on Dec. 12, 2016.

  1. 12/12/2016 Mail the package to Phoenix.
  2. 12/14/2016 In the afternoon the package is delivered to the mail box.
  3. 12/21/2016 The check is cashed.
  4. 12/22/2016 At noon I received the text message and email saying my application is accepted and transferred to NSC.
  5. 12/24/2016 Received the return of my AP application and it says that my form expired, this is a processing error from the USCIS since someone else actually uses the expired form and get accepted.
  6. 12/26/2016 Received the receipt of my EAD and I485 (official received date is Dec. 15, 2016).
  7. 12/28/2016 Mail my new package for AP application to use the new form.
  8. 01/11/2017 In the afternoon I received the text message indicates that my AP application is accepted and transferred to NSC. Now it is long time wait…
  9. 01/29/2017 USCIS mailed the finger print appointment notice. and I received it on 02/04/2017.
  10. 02/16/2017 Appointment to the finger print.
  11. 02/25/2017 USCIS notices my new EAD card is produced.
  12. 03/01/2017 USCIS indicates that my new EAD is mailed to me.
  13. 03/03/2017 Received the EAD card in mailbox. It uses the photo taken during FP process and has my finger print.
  14. 4/19/2017 Received text message about my AP mailed.
  15. 4/24/2017 Received my AP paper, two copy, the covered date is from 4/14/2017 – 4/18/2018
  16. 8/23/2017 Go to the USICS for a status check, the naming check just completed on 8/22/2017 so that do take a while. BTW, my NIW I485 has been approved, from 9/26/2016 to 9/8/2017. NIW cannot make fast so that is basically how long it takes.
  17. 10/20/2017 Submit a service request.
  18. 11/17/2017 Get reply for the service request, indicating that the file is in the queue for review.
  19. 11/20/2017 Status update as Card is being produced.
  20. 11/27/2017 Status update as Card was mailed to me.

In memory of the blue fish

Today I saw the blue fish died in the tank, I even haven’t picked up a name for it…

I feel sad due to that it has been just less than a week for it to be in our office. And I am majorly the person who take care of it. And what is important, it dies with white mold cover its body. I actually saw these white mold yesterday when it is still alive but just forgetting to spend 1 minute to google it. I saw the pattern but did not treat it seriously. Then just after one night, it is gone.

Another sad situation is, no one notice it except me. I doubt that no one will ask where the fish goes for the entire week. Let’s see… UPDATE: Yes, so people notice it, not that disappoint. 

This makes me think more about the company at the same time. How should we run a healthy business? First, we need to have a lot of experience in running a successful business. If we do not have a veteran in group who have so many experiences to see the pattern of sickness, we need to learn as much as possible, as soon as possible. Because lacking of knowledge is dangerous, which may leads to catastrophe in one night. However, the problem may be not that hard to fix in the early stage.  You just miss the chance to do the easy thing and then the damage cannot be stopped.

Pay attention to details. Yes, if we do not treat the abnormal case in a company as serious as possible, we lose the chance to fix them.

No body may notice the death of the fish, why? Because no one really take it as his/her responsibility. For me, I feed the fish, but I did not extend the responsibility to keep it alive. I did not take the consequence for its death. So I did not treat it as that serious. So In terms of company, there are two ways in my mind for this situation. One, make very clear responsibility list for everyone so in a whole picture every corner of the company has been taken care of. Another, you have to be self-motive to look after the development of the company in terms of your general duty. Self motivation needs stimuli. For me, I need to prove myself and get what I do not expect from the company to treat it as my own business. To understand what you want from your job is very critical, it is not only good for your development, it is also good for the company since in this case people have direction to motivate themselves to go, once people have the force to go within themselves, the leader understand how to guild the force, even change the force in regarding to the general benefit of the company. If the employee lacks of the force, pushing them will be useless and really won’t go anywhere.

Employee should not ignore abnormal situation of the company. It needs eyes to detect the “white mold” on the body, through study more than just technical and theoretical knowledge. In small company, I feel every employee need to train to acquire this leadership skill. In return, the boss should also take care of the employee to detect the “white mold”. Try to understand where the force of the employee is, help them build the career path and grow in a healthy way. It cost much more if we ignore a small problem we notice in the early stage.

I buried the little blue fish in front of 3150 building, under a bush. I am so sorry for you.

December 14, 2016

China Tech Day Take-away

On December 10, 2016 Santa Clara Convention Center hosts the “China Tech Day” event, which invites a group of CEOs to visit Silicon Valley. There is some interesting information to take home.

I20161210_135051n the opening talk from Chun Li, CTO of Alibaba, I notice that what Ali accomplishes is to build a platform for all people who try to do business but don’t have the power to deal with the technology part. They resolved the problem like create general API for dealing with money with all different banks in China in early 2000.

With some try-out of business, they start to design and develop a general platform which can support the business in China. Majorly with multi-layer design. When they think the problem, they put the question “How does different cases run on this system?” in their mind.

They also think about how to put people to develop the platform together.

They also mentioned about the differences between SV and China.

  • Silicon Valley focuses on tech and product.
  • China is about how to get the business big, so it may involve more on how to get order and enlarge asap since it won’t be that hard to duplicate the similar product in China. The issue is who gonna be the big boss.

 


20161210_14320220161210_145635The next coming report is from Zhengrong Tang, vipabc’s CTO, but also a veteran who worked 10 years in SV and 10 years back to China. His talk is really informative on how to start business.


Then we have a panel talk on How asian engineers should plan their career path. But I feel that panel is a little out of the topic of “Asian”, it is about the difference between being engineer in SV and China.

  • There basically are two pathway as professional career: Technical and Management. Both of them can go pretty high but seems like Technical path needs a strong research passion to keep thing going, which won’t be very easy.
  • When you choose the job, actually, if you have the power to choose, then try to see the culture-fit, challenging job, fun work, and self-improvment space (such as to work under the supervision of big star).
  • Management is about how to help others from your own perspective.
  • A rating and evaluation system is also critical. Since it provides a objective way to make you see what people thinks about you on the work performance. Normally the rating is about Leadership, Leverage, Result.
  • For people who choose to go to China to start work, the time that the oversea student enjoy much high attention has gone. If people are not very special when they study/work in US, then when he/she comes back to China, it won’t be that different, and he/she also need to avoid using English for the job and work. Some technical words need to be learned in their Chinese form. For these group, they should think what they can do for the job in China with their knowledge learned in US.

20161210_160125 20161210_160536 20161210_160544 20161210_160626Then it is the technical part, AR/VR introduction given by Wanmin Wu. This is a intro level talk about AR/VR, but it is very helpful for me to sort my knowledge.

  • The non-technical challenges for VR: anti-socialism. In its current form, it actually not helping people to communication.
  • The challenging part for AR is eye tracking so the system can dynamically refocus. Interaction is need to be natural and effective. Display is difficult to be small. The content is an issue. Power drain fast. How to reduce the heat. How to increase the FOV and resolution? How to render pure black on transparent surface?

In conclusion, I feel this is a very interesting talk and give me more insight knowledge on how a people become bigger than just one.

WeGreened绿卡申请经验

现在想想很幸运和WeGreened北美联合律师所合作,把EB2NIW和EB1A联合package办下来,并最终EB1A PP在7天内通过。

选择WeGreened主要是一开始对我case的一个比较有信心的评估。我于2015年7月博士毕业并开始在加州工作以后开始联系身份申请的律师,当时的状况是如此:

  • 美国公立大学计算机博士
  • 论文19篇,其中journal 5篇,会议14篇,一作7篇,其实journal一作只有一篇,还有2篇是心理学的合作journal,那个其实只需要提交abstract,所以并没有完整的文章。
  • 引用60,主要集中于一两篇文章
  • 没有国际大奖,学校小奖或者学生competition入围奖
  • 无Patent,无媒体报道
  • 虽然读书时间review了很多文章,但是没有直接给我自己发Thankyou letter的。

这个情况大多数律师是觉得可以办EB2NIW,但是EB1A不行。联系到WeGreened,给他们发了我的CV,律所很快回复,可以办理EB2NIW和EB1A联合申请。其中EB2NIW还是失败退款项目。这个比较特别,失败退款是指如果WeGreened为你提供此项目但是最终你的申请被USCIS驳回,那么律所会全额退还律师费(给USCIS的申请费应该退不了…)。所以如果律所敢保障办理这个项目,则证明你的通过率很大。实际上,WeGreened在2014到2015年EB2NIW和EB1A的通过率都相当高,在95%以上,如果单算不敢失败退款的类别,也在80%以上。我觉得能够对办理有如此的信心,主要还是基于两点;1. 大量办理所产生的数据量和经验;2. 对于客户的严格把关。

所以于2015年9月签署了合作书,然后就开始在WeGreened转的一个网上信息平台整理搜集律师所需要的资料。

  1. 律师会给出一个10页的模板,让你总结你的3-4个两点,推荐信撰写人的list以及相关背景。模板都是以问题的方式给出,所以你可以写的很有条理。这个文稿很关键,因为律师肯定不是你研究方向的专家,所以你的petition letter,recommendation letters里的内容都将基于这个模板来,甚至就是原文搬过去。所以这个需要自己花些脑经。但是,感觉比让自己照着别人的Petition letter再重新打稿要容易多了。
  2. 之后根据对应亮点和相应的推荐人,律所会撰写推荐信。然后各位就求各位大神签字吧。对于EB1A类型,至少得有一名推荐人是来自美国之外。还有啊,这个推荐人不要一位追求同领域内大牛,因为签证官有时会跟你来比较,说你同领域有这么牛的,你就low了,反而弄巧成拙。

同时他们会完成你的Petition letter,以及需要的item list。你就一方面准备这些items一方面求推荐信。律所10天会根据你的模板准备好Petition letter 文稿,如我所说,因为不是你领域的专家,他们写出的文章在论述你领域的时候难免会有你看上去不对的地方,请耐心修订。经过多轮修改后,同时准备好材料就可以打包邮寄给律所了。

等到正式提交EB1A申请时,我的状态是:

  • 美国公立大学计算机博士
  • 论文20篇,其中journal 5篇,会议14篇,一作7篇,其实journal一作只有一篇,还有2篇是心理学的合作journal,那个其实只需要提交abstract,所以并没有完整的文章。
  • 引用160,主要集中于一两篇文章
  • 没有国际大奖,学校小奖或者学生competition入围奖
  • 无Patent,无媒体报道
  • 16 篇 journal conference review thank you letters。

2016年感恩节完成PP NSC的申请,于11月30收到通过的电子通知。

写在8年之期

来美8年了,今天终于给自己的博士生涯在生命的历程中画上了一个句号。EB1A申请在7天内通过,就在2016年11月30号,一个身在Nebraska的签证官,审阅了我这八年来上帝保守下行的道路,给出了Approve的答案。

打开浏览器的时候只是不经意的看到昨天查过的网页又弹出来,于是又在输入栏里面填上了L,选了历史记录里面的收据号码,回车,然后显示了Approve的信息,我还不敢相信,拿出收据原件好好比较又比较。感觉好像不会是自己吧,不会这么走运吧。

是的,这就是我,一个脚踏实地但是却总觉得自己不够格的人。读博士没想着最后还能去SIGGRAPH,没想过可以认识那么多牛人,没想过会和工业光魔的老大say hello,没想到可以完成那感觉总也写不完了毕业论文(没动笔真是觉得Mission Impossible),没想到会跟同学出来自己创业,没想到过去八年所做的会如此加速我拿到绿卡的过程。

这就是上帝的美意,在我最困难的时候,是我的心中的责任和柔软以及我在Binghamton教会家庭的话语让我能够在失落的时候可以归向神,让我明白神不应许我们妄求的因为必将准备更好的在我们的前方,而一切挫折其实都是为了祂在我们生命中的安排。

我也明白,否认上帝的也可以活的很精彩,甚至更自由,我也不比那些更加虔诚的基督徒,但是我心里一直想的就是:在2013年复活节,我做出了这个选择,我就继续在主的道路下走。我会不听话,我会怀疑,但是我不会放弃。就像我2008年8月3号踏上飞往纽约州的航班,想想真是时光匆匆,所有的怨恨,快乐,悲伤,到现在真的又在乎多少呢?一个人的心态确实是会完全改变人的行为处事甚至生命的轨迹。我要更加积极,同时也要保守自己的谨慎和认真,继续走主给我安排的道路。

话说今天早上接人还拿了一张Ticket,所以上帝的工真是猜不透啊。。。

圣诞节能看到梁静茹和老友,今年我真的很满足。

湾区爬山信息一

这里开个贴聊聊旧金山湾区的民俗活动之一,爬山(hiking)。直入主题,今天要说的是两个去过但是风格完全不同的地方,一个是位于中半岛Fremont的Mission Peak,一个是位于金门大桥以北的Muir Woods National Park.

  • Muir Woods National Park

地址:1 Muir Woods Rd, Mill Valley, CA 94941

阳光指数:★

难度:★★★

经典度:★★★★★

费用:10

Muir 属于北加景点,但是确实是值得一游的地方,建园100多年,里面很多古树遮日,白天步行其中仿佛回到史前时代。此地也是星球大战的场景之一(视频见上)。入园的底层都是木板铺就的行人道,然后多条不同的Trails依次从两边延伸出去。比较推荐的是Skyline 步道和Dipsea步道,都是顺着石阶环山而上,最后柳暗花明鸟瞰太平洋。Dipsea步道单程大概时间2小时,Skyline应该会短一点。

去这个Trail就抓住一点:早!停车位实在有限所以感觉9点之后到就比较难找到车位。而且如果到得比公园管理员早,应该是不会被收门票的。

  • Mission Peak Trail

20160417_155645 20160417_170543

地址: Stanford Ave, Fremont, CA 94539

阳光指数:★★★★★

难度:★★★★

经典度:★★★★

费用:Free

想认认真真做运动那就来Mission Peak吧!周末停车位是不好找,8点以后估计就得停到旁边的豪宅区了。山上由于是牧场,经常会有奶牛过马路,当然也要小心牛粪。山路弯弯曲曲上去,可以回眺整个湾区的景色,最后是一段岩石路,小心登顶以后就可以排队等待在顶峰的标志上合影了(如上图)。上山时间差不多2小时。

由于地处Fremont,所以爬完山吃吃喝喝的地方都是很方便,沸点啦,韶山冲啦,还有Union City刚开的涛味海鲜自助。。。(额,感觉有点反爬山宗旨)

爬山准备

我一般都是头一天蒸一些番薯,鸡蛋放包里,然后带两瓶水,出门记得带防晒或先涂好,带帽子,穿运动鞋。初爬最好带登山杖,这个东西Costco有卖,运动品商店也有。

那基本就说到这里吧,看大家有问题再一一回复,也欢迎各位指正错误哈。

Canon Mixed Reality Project MReal 体验

今天在斯坦福体验了摄影大厂佳能自己捣鼓出的一款增强现实设备MReal。这是一款配有三个摄像头的有线连接头盔和对应的解码设备。配合佳能为其量身打造的Markers, 该产品可以实现空间内三维物体的实体渲染。不同于目前各大厂商的AR设备,佳能的这一款采用了Video see-through的设计。也就是说,用户眼前看到的影像实际是经过两个在眼睛处的摄像头采集的。头顶部还有一个简单的摄像头,头部平视时该摄像头朝下,用来跟踪地板上的maker map。

MReal HMD set.

设备的帧率在30 fps, 视角在110°左右。作为一个面向工业设计界的AR头盔(感觉Mixed Reality就是对Augmented Reality这个晦涩的词汇的大众叫法),感觉HMD本身只是三个摄像头的支架,视频信息被汇总到一个解码器一样的设备然后再传输给一台主机process,看起来略显笨重。但是不同于其他VR Hack成的MR设备,MReal在眼前的图像会真是还原实际的景深,所以裸眼看见物体的大小和通过此设备看到的大小别无二致,这一点还是不错的。

相关处理设备

此台设备由于配备了Marker 的地板,所以不需要额外的摄像机来跟踪头盔在空间的位置,用户也是通过一个贴满Marker的操纵杆来和MR环境交互,基本上全部是利用图像跟踪的技术。值得注意的是,为了提供更自然地交互,系统提供了颜色选取功能,用来让用户自定义一个颜色范围,比方说手,然后就可以将手的部分从二维图像中挖出来。据透露,通过两个摄像头捕捉图像的视差,三维空间可以重建,于是手和虚拟渲染出的物体就可以交互。

大家其实都忍不住想用手呢~
大家其实都忍不住想用手呢~

关于这个产品的应用,主要是针对工业设计。因为传统工业设计中直接制造毛培模型话费平均百万美元,到最后定稿阶段必须要手工制造出实体才能商讨。通过这样一个设备,许多设计可以按实际大小显示在增强现实空间里。而且由于头盔佩戴者可以被跟踪,相隔千里的人也可以针对同一个产品建模进行交流,用手中的tracker指向模型,另一边的用户会看到一个虚拟渲染出的手指向模型的位置,然后可以走过去观察。这样一个在虚拟环境中的展示可以很大程度上缩小开模的次数,从而减少设计成本。而且由于是在三维空间等大小显示,设计师可以更直观的获得产品外观方便设计。而作为Video See-through设备,可以很好地避免光学成像的半透明效果,渲染出的物体拥有实体店颜色,更适合工业设计用途。此外,在进行专业人员训练时,不需要实际的机器,人员就可以在这种虚拟环境下迅速尝试多台设备,对于培养诸如同一厂商整条流水线的汽车维修人员也是很有帮助的。

在教育方面,这也可以应用于医疗教学,可以更方便的展示相应信息。但是基于本设备的成本大约在10万左右,我相信还是工业界使用的可能性更大。

佳能的这款MReal设备推出大约有三年,并不面向普通消费者,提供SDK但是并不开源。但是确实作为一个Video See-through的设备,解决了光学成像的半透明问题,还是值得学习借鉴的。

IMG_20160413_170532 IMG_20160413_164129

产品在工业界的流水线所起到的作用。
产品在工业界的流水线所起到的作用。