西藏之旅

我本不是一个爱旅行的人,但不知为何,西藏却是一直向往的地方。然而到了西藏才发现,这里确实是一片神奇的土地。

由于这段旅途过于传奇,我也就先不多写太多,只是贴贴照片,写写流水帐罢。

瑰丽青藏线

北京出发,乘火车经过青藏线进入西藏。由于西藏太过广袤,而很多景点都很遥远,在火车沿路观景是个相当不错的选择。如果不考虑自驾的话,火车入藏能看到不少路途美景。(感觉有相当一部分的美景是在火车上看的)

首先是翻越唐古拉山,高山冰原上行车别有一番风味,而周围的美景,绝对是此行中的一个亮点。火车穿行在永久冻土的冰原上,周围的景色,绝非其他地方能比。

过了唐古拉山,经过可可西里无人区,而后就是高原上的荒漠,偶尔会有一些绿洲。

高原湖是西藏的一个奇景。由于很多湖泊都是当地人信奉的圣湖,不能污染,没有过度开发,湖泊纯净天然。蓝天,白云加上平静的湖泊构成一副震撼人心的景象。火车会途径海拔最高的淡水湖——圣湖错那。

一路还会路过无数的雪山,对于雪山控而言,就是无尽的毒药啊。

青藏铁路一路美景无数,如果不愿坐长途的旅客,也可里考虑从西宁直接上车,仅走青藏线就是。

佛教净地

藏传佛教也是西藏神秘且独一无二的景致之一,由于佛缘不够,只是草草的参观了大昭寺,扎什伦布寺和布达拉宫。

大昭寺
扎什伦布寺
布达拉宫
布达拉宫黄昏夜景

最后附上一些经幡阵

比日神山经幡阵
南迦巴瓦前的经幡

醉美林芝

林芝位于西藏东部,海拔只有不到2900米,不会有太强烈的高山反应。同时,由于水系丰富,空气潮湿,植被覆盖率会高许多,素有“西藏的小江南”之称。同时318国道从林芝往四川段,可谓美景无数。既有美丽的林海和漫山遍野的杜鹃花,又有雅鲁藏布江奇景,更少不了最美雪山南迦巴瓦,林芝成了西藏最佳的旅游地点之一。同时由于海拔低,气候适宜,更成为西藏旅游的首选地。

鲁朗林海
雅鲁藏布江

高山圣湖

高山圣湖的美景前面已经说到,纳木错,羊卓雍错这些名字也早就令人熟悉,不多说,就上图好了。

纳木错
纳木错
羊卓雍错
羊卓雍错

飞回北京

从拉萨机场返回北京,一路也是欣赏了不少奇景,从高空看白云映衬下无尽的雪山,绝对是难忘的体验。

西藏确实是个太神奇的地方,而更神奇的则是这次旅行本身,至于在旅行之外所收获的,知情的看客自然就已经了解。而不知情的,就等后面的分解吧。

 

 

SIGGRAPH Asia 香港行

各种忙项目的时候,还是去香港开了一趟SIGGRAPH Asia,说实话 SigAsia这时间选的还真是要命…..现场准备presentation,糊糊涂涂讲完,总算抽空出去玩了一天半。整天早起,弄得回来都没力气ps了…..总之,姑且上几张旅游图随手拍算了….也算有个交代。

T3出发,很早的飞机,空荡荡的T3候机厅

登机口在T3的一端尽头,窗外刚好能看到01-19跑道起飞

往返都是乘坐这架,国航/澳门航空的亚速尔号

 

香港最好的还是夜景

只可惜镜头擦不干净就是各种悲剧

另外附送一张同样内容的白天景色

当然,对于俺这种最喜欢重口味的,当然拉丝是必不可少的最爱

总之,最爱夜晚光亮的丝丝就是了….

另外,住在了著名红灯区骆克道,表示压力很大

 

剩下一些旅游图

迷路了?看路牌?我们在哪?最后还是minmin的强大离线地图拯救了组织

 

去旺角路上,随手拍

 

第一次到湾仔道

香港是个新旧交融的城市,世界顶级奢侈品和杂货摊铺可以在一里之内和谐共存

甚至还有幽暗闲逸的宝云道

 

最后是一点扫街照,希望没有侵犯肖像权

 

Lytro is out, an amazing product

The long waited, revolutionary Lytro camera is finally out. Personally, I think this product is excellent and even beyond my imagination,  it is kind of magical.

The reason I regard Lytro is a successful product, comes from threefold: the cool application, the simple design and the right price.

The cool application

Actually, Lytro is not the only one focus-free camera that developed, go through each year’s SIGGRAPH, you can always find some similar paper related that results the similar effects. For example, coded aperture can do the similar trick, MIT also have some all-round-in computational  photography cameras. However, Lytro, the light filed camera stands out for a reason.

Although there are many classification methods for computational-photography cameras, there is always one secret while classical classification: whether they fully utilize the light come into the camera. Anything related to a specially designed aperture, or natural dense filter or similar filter involved will block some lights go through the lens. That results much longer exposure time, or lower quality with noise as trade-offs. Light efficiency is very important in the industry, that is why several years later, we still find a HDR camera paper published in SIGGRAPH 2010 [ref]. And by using micro-lens rather than light blockers, Ng’s light field camera falls into the glory “light efficient” category.

More over, the demo application is so cool. Even several  years after his paper published, out-of-focus is still a problematic issue for some cases, especially when you want a shallow depth of field. The online demo is very intuitive and directly express the advantage, or at least the fun of this new technology.

The simple design

The key job for Lytro camera is to make photography simple, with out additional focus adjustment. There even no adjustable aperture, since all those things can be done after the photo has been taken. Like the fun application, taking picture of Lytro is very easy and fun, just snap it, that is it.

The more important thing behind the simple design is that, they find the right market target. This is a commercial product, just light another point-and-shot camera. Shooting with it is only a fun hobby, not for serious photographers. Why this market? They may say that: causal photographers tends to free themselves from focusing and they like cool stuffs, like the re-focus demo. That is partially right. Pro-photographers can handle the focusing quite efficiently and they often don’t need the re-focusing.

But, when you think in deep, if the refocuse feature comes for free, why not using it. Actually, light field camera have very limited spatial resolutions for the final generated image. Although it has a 1.1Megapixel sensor, because the light field has much more data need to be captured, the actual image generated should be much smaller, say 1500×1500 for re-focused results (this is simply based on my guess, things my vary). It is far away form enough for pro-photographer compare to monsters such as Canon 1DX (even my poor 60D got a 5184×3456 resolution) However, for consumer, the resolution is not that a big deal, the application is cool, the design is sexy, it done right.

The right price

The right market leads the right price, no one wants to pay over a thousand bucks on a cool high-tech toy, the 399$/499$ price range just fits everyone line. For just that price you can buy a “next-generation” camera, with cool features and the design looks really good, it really a good deal. For gadget fans, show-off guys this is right for you.  This price really make computational photography into everybody’s life.

I didn’t mention too much down side of it, because it is cool, for cool stuffs people can always forgive minor drawbacks such as lacking windows supports….(windows guys are not cool, lets meet Apple fans only 🙂 )

My deep respect to Ng Ren

I really admire and respect Ng, not only for his great research in light field camera and PRT as well. He really has a big vision for computational photography and he managed to made it. I believe the Lytro camera can really spread the power of latest graphics technologies and ignite a new revolution. Good luck for Ng and his all-star team.

One more thing

Let’s wait the video Lytro rock our life. I’m not sure whether they will release a video version of this (I heard from a interview of Ng that they are planning on this). Never the less the video re-focusing will definitely shock the industry. Focusing for video is much much harder than for stilled photo, not even talk about the smooth focus transitions. It really frustrating and experience-intensive job for handling video focusing. On the other hands, video often come 1080p, that is enough, and I think this is not impossible for Nytro to achieve that.

So when the Lytro Video comes out, we can expect another huge succcess for them.

 

 

 

 

张家界秋游图

第一次跟公司offsite,去潘多拉,呃不,是张家界,确实风景不错。随手贴几张秋游图做纪念…..

简直就是各种西游记的外景地。另外,十里画廊的那个小火车坐的真不值,还不如走着,能驻足观景。

另外张家界雾气较大,又是随手乱拍,只好借助各种不靠谱的ps了…..但求不真实…..

哈里路亚山好多人都拍过了,确实没啥爱,就不放照片了

然后是一些天门山的照片,一样雾气重重

峰顶云雾

吓人的盘山道

强大的缆车上缆机构

 

回程的A320

空旷的机场只有一家孤单的单通道飞机

经典的CFM-56,曾经的头像,A320-NEO要有别的引擎了,CFM要hold住啊….

飞机上拍到的奇怪的云

回程的最后,还看到了不错的北京夜景,很赞