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Expresii on Surface Pro 7

13/11/2020

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It has been one year since the Microsoft Surface Pro 7 was released.   We got ourselves an i7 model to test with. We've had it for about a month now and it has been very responsive.
The following is a quick test on its performance. As you can see, it allows fluid digital watercolor in Expresii. In case you can't afford the i7 model, you can still get by with the i5 model, but  you may want to use the   Fast Mode   for more responsiveness.
Did some calligraphy test too:
Don't have the original Surface Pen with us right now, so we picked up a Surface Pen alternative in these tests. 
Finally  we'd like to show you some sneak peek at some latest development in   ink-painting-style animation (水墨動畫) that we are working on.   Follow our animator collaborator's Instagram  to learn more. Their work is so cool & cute at the same time!
​And yes, Surface Pro is used in producing this animation, in case you wonder.   ​​(・ωー)~☆
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Lenovo Yoga Duet 7i & E-Color Pen 大千色彩 一筆入魂

31/8/2020

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The Lenovo Yoga Duet 7i was announced earlier in May this year as a 2-in-1 tablet / laptop computer. The design is very similar to that of the Surface Pro, so we regard the Duet 7i as a   Surface Pro competitor.  

Digital Pen captures ​Colors From Real World

Perhaps  the highlight of the Lenovo Yoga Duet 7i is its support for the brand new Lenovo E-Color Pen.  Among all the pressure-sensitive styli for iPads, Windows or Android devices, the   Lenovo E-Color Pen is the first that can capture colors from the real world.  Recently, the Apple Pencil was rumored to add such a feature given they filed a related patent application. However, It's not likely Apple would be granted such a patent, as suggested by Jeremy Shu, CEO of Ufro Inc, the company that provides the color capture technology in the   E-Color Pen . 
The Lenovo E-Color Pen is a rechargeable Wacom AES pen. Its USB-C charging port is hidden behind the color capture module, which unplugs from the top of the pen.  The pen is pressure sensitive and drives the cursor when hovering. It doesn't support  tilt sensing, but you can use one of the two side buttons to adjust brush tilt in Expresii. 

​The pen is not magnetic like the Surface Pen, so you can't just stick it to the side of the tablet. Previously Lenovo supplies  holder for their active pens that plugs into USB-A ports of the tablets, but now they switched to USB-C for the Yoga Duet 7i so you will need to find another solution if you want to keep it attached e.g. this pen sleeve  on Amazon, or the same thing on TMall of China for half the price. 

Software Takes the colors & Magic happens

Currently our app Expresii is one of the select apps that natively support the E-Color Pen color capture function.  Its watercolor simulation is a good reason  for anyone to use it for showing the capture capability beautifully.  When you pick a yellow and a cyan from the real world, the virtual paint mixes together to give a nice green and Expresii's watercolor flow further mingles the paint with gorgeous flow patterns in very high resolution.  Expresii supports Ufro's   Mozbii pen since 2018  and we thank Wacom for linking us up leading to   hardware and software innovations working well together.
The following is a video showing general color picking  and the use of the pen for Eastern calligraphy on the Yoga Duet 7i. The machine used in the i5 model, but it's already fast enough for using Expresii. There's the i7 option that gives even better performance for you to choose from.

Pen & Keyboard included

I came from the Surface Pro family, and I really prefer the keyboard of the Duet 7i being able to operate via bluetooth when detached. It's good that Lenovo is including both the keyboard and the E-Color pen, at least in the markets of Hong Kong and the Philippines, instead of needing customers to   fork out    another   USD 90 to 160 for a keyboard cover  and   USD 99 for the official Surface Pen.  There're cheaper aftermarket alternatives for both items (like these pen alternatives), but consumers need to shop around separately. The Yoga Duet 7i is called Yoga Duet 2020    in the Chinese market, and a normal Active pen instead of the E-Color Pen is included.

Multi-Color Loading

Expresii  receives colors from Color King, the proxy software that sends the captured colors to supported apps.  Our Expresii not only can directly receive colors from Color King, but it also offers you the option to auto-load single or multiple-colors into the virtual brush. This is a unique feature made possible by the native support for multi-color loading in Expresii.   As demonstrated in the above video, you could pick a few colors in sequence to make a gradient in the brush. You then can make strokes with such a gradient for even more interesting marks!

A Coloring Demo

We  further demo coloring a piece of ink work using the E-Color Pen.   In this demo, we celebrate  brush stroke economy. We appreciate watercolor having a life of its own. From the thumbnail, you may not be able to appreciate the simulation quality so we urge you to watch the video:

Performance

The following video shows the performance of color capture and making strokes on the i5 version of the Yoga Duet 7i.  The color transfer can be immediate. In the above videos, most of the clips are played back at 2x speed up for editing purpose. The following video shows you the performance in real time.

​Our app uses GPU for rendering and flow simulation, so it's often the GPU being the bottleneck.  If you find it too slow on your machine, we can still enable Quick Stroke Mode (Fast Mode), and Expresii would be more responsive as you stroke. If you're on Win10, it's easy to download this Store Demo version of Expresii for you to test out the performance.
How accurate is the color capture? I'd say pretty accurate, as you can see from our demo videos. I tried picking the neon   orange from my sport shirt and the color captured was obviously off. But other than difficult situations like that, it's pretty accurate for the most part.

Final words

We appreciate   the startup   Ufro Inc   bringing low-cost color capture tech to the masses. Color sampling devices used to be rather expansive, and only specialized  people would buy them. FYI, you can also order Ufro's standalone color picker InstaPick for as low as USD 60.   We also appreciate   Wacom and   Lenovo for adopting the innovation.

We hope that the Lenovo E-Color Pen would be supported on future pen-enabled machines from Lenovo.  They just announced  the Yoga 9i, which uses Intel’s new and much improved Intel Xe integrated graphics of the 11th Gen CPU. We also wish Lenovo would opt for tilt sensing for their coming pen models. The future looks bright for creative professionals!
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2019 Year of the Pig Greetings 瑞豬 己亥 迎春

19/1/2019

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🍊🧧 🏮   Best Wishes for the  Year Of The Pig  🐖  2019 瑞豬 己亥 迎春     🏮​🧧🌱
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Ambigram 瑞豬   ⇔   己亥 迎春
See it displayed on Surface Pro's / interactively    

Chinese Characters 漢字 Ambigrams × Paper Cut ​紙雕

We designed the ambigram [瑞豬 ⇔   己亥 迎春]​ using Expresii's new quarter mode to celebrate the New Year of the Pig. T he year 2019 is marked as  [己亥]  in the lunar calendar.  [迎春] means welcoming spring;     [瑞豬] pig that brings luck.    Paper Cut is good for showing flip-type ambigrams since you can easily flip the paper to show different sides of the design.
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Ambigram paper cut carrying different messages read from both sides

No ordinary Lanterns 不一樣的 🏮 花燈 / 燈籠 🏮

It's common to display lanterns for  Lunar New Year.  We therefore try our hands on making a few lanterns featuring our ambigram greetings. We wanted to have a blend of tradition  & tech and also make the piece interactive so we made an attempt to embed    QR code  into the design  - not just any QR code but ones that can be read from both sides carrying different messages just like an ambigram!   To complete such a design, artist ability alone is not enough. 
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Lanterns with Ambigram Design. Reading from outside, from right to left:: [ 瑞 豬 ]

QR Code Ambigrams 也可翻轉的QR CODE

To make our two-sided QR code,  we  asked   Prof. Tim Leung   of HKUST to help with the number crunching.   Specifically, we need to write a computer program to untie the knot in producing two-sided QR Codes.   

​'​We have a UG student working on this problem. It's a good training for the student, which involves math and  (computer) coding​,' said Prof. Leung.  Our Dr. Nelson Chu, designer behind the ambigrams and lanterns, is an alumnus of HKUST and hopes to get current HKUST students inspired by interesting projects like this.  ’This is a typical real-world problem we need to solve everyday. In contrast, usually  clear instructions are given in a school assignment. But now one needs to be critical and be able to judge the correctness in the information gathered', said Dr. Chu.   'There may be more solution to one problem, and some hidden issues yet to be solved.'
抱有懷疑態度是做研究的基本;我們應保持好奇的心去探索  -- Prof. Tim Leung
The following are a few of the QR Codes we made:
And here comes the Moment of Truth - see if the two-sided QR Codes work in the following video:      (*゚ロ゚)
And if you are to try  out our 2-sided QR codes, note that some QR code scanners would only give the message  from one side because they would flip the input automatically.  We use this scanner  on Android, which can read the two messages.

STEAM Education

This lantern creation is a perfect example of STEAM ( STEM+Art) projects.   Apart from trying to get involved in multi-discipline activities, we strongly encourage students to learn computer programming regardless their majors. Being able to program a computer is empowering. You don't need to wait for someone to make a program suitable for your needs, you can just create one ​whenever creativity strikes!    Being able to make the first move and create something never existed before makes you a leader rather than a follower.

“近年,教育界提出新的「STEAM」框架,亦即在原本的「STEM」加入藝術(Art)的意涵,強調未來的學生應培養跨領域素養和能力。” (wikipedia)

STEM 是美國先提倡,然後香港、台灣等地跟隨。我們其實一直做的就是STEAM的工作:從一開始用 物理原理 模擬 毛筆,用 流體力學 做 數碼水墨,到現在開發 中文 翻轉字 (ambigramアンビグラム) 工具,全部都把藝術、文化、科技等結合,做出前所未有的新產品。我們非常歡迎各學校共同辦好STEAM 教育,讓我們的學生Future Ready,迎接未來的挑戰!東方文化有很多值得發展的地方,希望一天我們是領導者,而不是跟隨者。╭( ・ㅂ・)و )))​
職場上通常是藝術系的只會藝術,工科的只會工科;雇主如遇到有跨領域能力的員工應該興幸,因他們能幫你解決其他人解決不了的問題  --  Dr. Nelson Chu
P.S. We'll post making-of for the laterns in a later blog entry. Stay tuned. 

​'Flip' Icon made by Vaadin ​   from www.flaticon.com
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Expresii on Microsoft Surface Book 2

30/6/2018

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We were excited ever since the first Surface Book came out in 2015, since it gave the option for a discrete GPU.​ Now we have a chance to test with a Surface Book 2, thanks to Microsoft for providing the hardware for testing.
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We are provided with the 13.5" model. Coming from the 12" Surface Pro, I like the bigger screen size.   The hardware feels really solid and clean. And of course, with an nvidia GTX 1050, we get very good performance, although it gets a bit hot and the fan would kick on. 
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Left: Surface Pro 2017. Right: 13.5" Surface Book 2.

You need the base

When you detach the base, the GPU performance  drops significantly, so  you would like to attach the base when you use Expresii. In fact, when I detached the base and held the tablet part only, I realized how convenient the kickstand of the Surface Pro is!  Note that the tablet part doesn't have any USB port (or video port), so you can't really use it in place of,  say, a Surface Pro. I believe they designed it for only brief detachment like for the case of quick presentations.  
PictureCalligraphy done in Expresii on the 13.5" Surface Book 2

See the calligraphy process video in Youtube:
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Happy New Year of the Dog 2018 狗年旺旺

22/2/2018

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Lunar new year day was  16th of Feb, 2018.   We wish you all the best for the new year  of the dog!
Now it's being a tradition we play with the Chinese character for the year.  This year, we play with the character 狗, which means dog:
Recently, ambigram  is popular around East Asia, so we make one that reads dog and shows a dog 90-deg turned.  
​And notice how we use pen tilt to make organic marks.
Chinese characters give you so much room for imagination!  We can't stop playing with them!
​大家快來寫數位書法,漢字給你太多想像了!
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Only Expresii gives you this level of expression with brush and ink! 
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Keeping Tradition Alive 只有發展才能保留

23/10/2017

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Earlier this month, our Dr. Nelson Chu, along with  two more  alumni ​, was invited to speak in an alumni sharing session by HKUST.   You can review the whole sharing  here.   Nelson showed our  ground-breaking app Expresii on a tablet computer to the audience.   

Digital Art not real art? 數位藝術不是真藝術?

During the Q&A section, Nelson was asked   to comment on how to deal with people saying digital art is not real art. To answer  this, let's first assume people don't regard digital art as real art because they think operations like undo and redo   mean   cheating. Let's here what Nelson has to say:
One may say there's no mistakes in art so there's no need for undo. Okay, then let's regard undo's and redo's as opportunities to go back and forth in time. - Nelson Chu
'Long time ago when the Western fountain pen got introduced to the East, people might say "pen calligraphy" is not calligraphy. Only brush calligraphy is. But now people accept that pen calligraphy is also calligraphy' said Nelson.
Nelson is a firm believer of digital calligraphy.  See how he does digital calligraphy with his own tool Expresii: 
From the above videos, you see how undo's and redo's allowed more flexibility and save time  to create the perfect design without wasting paper.    ​(^(エ)^)

Embracing New Tools

In deed, if you look at the history of writing tools in East Asia, you will see we keep adding new tools to our arsenal over the years.  If we insist that a new tool has to act exactly like what came before it, there wouldn't have been brush calligraphy in the first place because we would still be using carving knifes to write. 

​​We should really   embrace new technology   and   explore what we can do with it.
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History of writing tools in East Asia
我們拿書法來談談工具的影響吧。毛筆書法的出現,是因為我們發明了毛筆。試想想,如果我們都堅持新工具一定要跟之前的一模一樣,那我們可能還是用着刻刀來刻字呢,而毛筆書法根本不會發展出來。
​​
也許以前有人說,硬筆寫的不是書法,只有毛筆寫的才是書法。但現在大家都已接受
硬筆書法也是書法。我們深信,數位書法是必然會發展起來。

Changing Business Model

Another possible reason why people don't consider digital art real  is that they can't sell it to galleries or collectors like they do with works done in physical media.  People are concerned that artists  (along with a whole ecosystem of art dealers) can not make a living if there are no   originals  (vs. digital copies) to sell.   

To respond to this, firstly, we'd like to emphasis that artistic value is NOT market value. If we stick to the question of  whether something is real art we should  really judge it by its artistic value.   Whether it sells or not is a completely different story.   For a painting, we judge its artistic value by e.g. the use of colors or  composition, which you can also find in digital art. 

Second, business models can adapt to changes.  A century ago, musicians made a living by performing live. With the invention of sound recorder, musicians don't lose their job simply  because there is  a way to playback their music. Instead, a whole ecosystem of record companies & distributors came into existence.  And then came the digital age, when people don't buy CD's as often.   Record companies could blame digital music making it easy to pirate. Then Apple fights the problem by providing a way to get legit music easier than looking for pirated copies.   And if you think those big companies are paying artists   too little royalty ,  now independent   artists can sell their music, art or tutorials via sites like Gumroad with a much bigger cut,  effectively  democratizing  art selling by creators.

消失中的手寫字 hand writing anyone?

久不久就有人發表文章,說現代人都用電腦手機,都不會寫字了。而且電腦字體的流行,讓人廉價使用。街上原本很美的手寫字招牌,一下子被呆板的電腦字體所取代。

我們不能逆轉電子產品的普及應用,但可把東西改進,讓它更適合我們。我們在軟件上努力,做出Expresii 水墨書法軟件,讓大家可以更好的在電子時代,承傳並發展中國書法和水墨畫。其實,電腦上也可以手寫字啊!

In the Chinese community, we regularly see  complaints  about new gadgets making our younger generation forgetting how to write with their hands.  The rise  of computer fonts  also turned beautiful calligraphic signs into unimpressive 'computer-font' ones in   our city . All these  new gadgets  seem to take away our cultural heritage.

Gadgets  only get   more popular and  we can't revert that. But what we can do is to build new tools  to go with them so that we can breathe new life into our  culture.   In Expresii, we're actually making digital art organic to a whole new level - in response to existing paint programs making brush strokes that are so sterile.
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Old neon vs New LED sign (Macau 2014)
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Wu GuanZhong (吳冠中) 1919-2010

To Keep Tradition Alive = To Bring In New Life

保留傳統,只有發展才能保留,不發展就不可能保留。 - 吳冠中
以上是已故著名畫家吳冠中的一句話,語出這裡。我把它翻譯成:To Keep Tradition Alive = To Bring In New Life。華人都很講‘傳統’,但真的,‘傳統’不是死的,而是需要我們去繼續發展下去的。希望大家不要抗拒新發展。新發展是難的,方向也不一定對。如果大家對我們的發展有什麼看法,歡迎指正。在此也僅希望從事教育的朋友,或者關心傳統的朋友,如果覺得我們做的事情是對的,請給予支持,幫忙廣傳。感謝!

I can't emphasize enough the importance of new development.  If you think what we do with Expresii is worthwhile, please help spread the word. Thank you!
​
Further on the pros and cons of digital painting:   Why go digital?
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Software Tech for Digital Eastern Calligraphy 東方書法軟體技術

24/4/2017

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Brush as a Simple Circle

When Apple   introduced the Apple Pencil, I was thrilled to find out the Apple Pencil supporting tilt. Eastern calligraphy appeared two times in their launch video. The first one is writing '書'  in red (below). 
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First appearance of Eastern calligraphy in Apple's Pencil launch video.
From the video, it seems the brush is only modeled as a circle i.e. strokes are made by sweeping a circular shape, scaled by the pressure applied. Years ago, there's a team from Taiwan making a tool named 'Royal e-Pen (神來e筆)' specific for Chinese calligraphy (video right) and that's basically the same software tech they have - modeling the brush as circle. When we were young,  we used to learn calligraphy by writing on top of model calligraphy (‘描紅’ as they say in China).  Teacher would say the worst crime you can commit is filling up strokes by going back and forth like what you do with coloring books. 
When your brush is  only modeled as a circle,  your brush footprint is rather different from that of a real brush and you might need to go back and forth if you want to conform to the model stroke shapes. To me,  using a very simple model like the circle to do calligraphy is fine as long as someone finds a good way of writing without awkward 'gap-filling' motion and that the resulting strokes are nice-looking.  Unfortunately,  sometimes you get sausage-like strokes (right), which is not very pretty.

Brush with Bristle Effect

The other appearance of Eastern calligraphy in Apple's video uses a more elaborated rough brush footprint to give a bristle or scratchiness effect (below).  The app used seems to be Procreate, which is a very nice painting app, btw.
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Calligraphy done with circle as brush footprint in 'Royal e-Pen'
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Second appearance of Chinese calligraphy in Apple's launch video
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The script rectified. I read '秋月' there.
Since its early versions, Painter has been using 'dots  within a circle' as the brush footprint to give a 'bristle' effect (video below).  Procreate seems to use a similar method to do bristle effect - the dab could be a captured image instead of one generated on the fly.  Interestingly, Adobe's 3D brushes give effect similar   to what these 2D brushes give  - the 3D nature seems to be not put into good use. In fact, when Samsung's latest Galaxy Book tablet was announced, demonstrators actually had a hard time showing off the new pen tilt feature with Photoshop, because no matter how they tilted the brush, they still got strokes as if  done in 2D without tilt support. By the way,  when a brush is enlarged, why does  it start to sprinkle smaller version of itself?
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Adobe's 3D brush design with "individual bristles" [1]

Our Efficient 3D brush model

In order to capture the nuance we normally get when using a real brush, we devised a more efficient 3D brush model. By efficient we mean we don't need to model it as 'individual bristles' as in Adobe's 3D brushes [1], and yet we believe we get more stroke variations than they do.  Our brush model also looks and acts more like a real brush instead of a brush made of stiff wires.  All in all, we believe our brush is the most natural and intuitive to use among all paint apps available today.

I can only recognize two characters '秋月'  from  what is written in the second appearance of Eastern calligraphy above so let's try writing the same characters in different styles in Expresii: ​​
And another demo  '筆墨'  for you.  In Expresii, every stroke has  its own character, its personality.   You can 't make the same stroke twice.
And I love doing designs like the following using Expresii.  You can do designs quickly and easily just like using a real Chinese brush.
And don't just take our words. See what Shaun Bryant has to say:
I'm loving how quickly and easily I can make vastly different marks in Expresii
​- Shaun Bryant, Visual Development Artist @ Dreamworks Animation

High resolution Rendering

We all know that raster-based paint programs are good for stroke richness  but you can't really zoom in too much.  Adobe came up with a solution of generating vector graphics  [1] for high resolution rendering.  For this to work, you're effectively  switching entirely to their vector-based tool, namely Illustrator.  When enlarged, you see many individual polygons overlapping each other (below). Personally, I don't think it looks too pretty nor natural, not to mention the added burden of rendering thousands of polygons.  ​(๑´╹‸╹`๑)
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Adobe's solution for hi-res rendering with their 3D brushes (images from [1])
We came up with an entirely different solution to the fat pixel problem. We can zoom in a lot, but the marks still look natural.   ​ Jony Ive ended Apple's launch video with "gives you the ability to touch a single pixel".  And here I'd like to say we give you to ability to zoom in a lot without seeing a single pixel.  ( ̄▽ ̄)ノ​
In summary, we hope to ​do Eastern Calligraphy justice with our software tech :
  • 3D brush model capturing nuances 
  • High-res rendering up to 12k x 12k

Cultural Significance

People complain  about the younger generation  being occupied by gadgets and  too few are doing traditional arts. If you are an educator involved with art or East Asian languages,  please consider joining us for this digital calligraphy  revolution. Technology  and art are not mutually exclusive. You can start teaching digital calligraphy today. Together, we'll work to revitalize this ancient art form.  Leave a comment below or message via Facebook, Twitter or whatever. Thank you!

Reference:
[1] from their paper "Industrial-Strength Painting with a Virtual Bristle Brush", 2010. [cached copy]

2017.04.30 Update:  we are informed that the piece of calligraphy was done by  Prof  王冬齡, and in the video, the shot should be showing him signing his name '冬齡'.  [ref 1] [ref 2]
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Year of the Rooster - Animated GIF 簡單動畫

2/2/2017

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Made a few animated GIF for the new year with Expresii.  
This one is a design made using the Chinese character 鷄 , which means Chicken:
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Running chicken 走雞:
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'​Sleep well on the 3rd day of the new year':
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Essentially these animations are done using the Overlay as onion skin.  You can also apply LightBox effect on the Overlay.  You can toggle the Overlay via  hotkeys ~ ` to alpha = 0 and 1. We output the frames to another program to do cropping or composition,  and then  feed the final frames to an online GIF maker  to make the GIFs.

The following videos shows some of the stroking process:
Finally here is a Lion Dance greeting GIF made by Rooftop Animation using Expresii (along with Photoshop, etc) for the new year:
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Wacom Connected Ink Tokyo & Digital Calligraphy

1/11/2016

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Digital Ink - moving forward

Another  Connected Ink event was recently  held in Tokyo  by Wacom for the promotion of digital ink.  ​Nearly 200 industry leaders from various global technology and stationery companies took part in this event. During the event,  Wacom  CEO Masahiko Yamada announced the establishment of the  Digital Stationery Consortium, Inc., whose  mission is to create a movement with cross-industry partners to make digital ink widely adopted and to promote the evolution of smart digital stationery.
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Masahiko Yamada, President and CEO of Wacom giving opening speech
One of the presenters was Kuretake ,   a famous  Japanese stationery  brand  whose root is in making traditional Eastern ink and related art supply. Mr. Suguru Takemoto from Kuretake Marketing talked about the "History of Handwriting – roots of ink” and  ​Expresii  was used for digital calligraphy demonstration during  his  presentation on stage:  
Expresii was also used to demo Wacom's AES pens, which are found in today's various Windows tablets, including the HP Elite x2:
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Expresii used in Wacom's demo booth (Event photos from Connected Ink website)
Check out  the AES pen ID demo and more from our previous blog entry on  CES Asia & Connected Ink Shanghai.

Digital Ink Calligraphy - Pen or Brush?

PictureMicrosoft digital ink
Today 'digital ink' is often referred to as the digital counterpart of physical ink used with a pen. It's often rendered as rather uniform-looking lines. 
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However, if you mention '墨' (the Chinese character for 'ink') to a Japanese or a Chinese, the first thing they think of is the ink used in their traditional art forms, which inspired great artists like Picasso and Matisse.

'Brush Calligraphy' is  one of the most important art forms in East  Asian countries like China, Japan and Korea. For thousands of years, East Asians have been using brushes instead of pens to write. For lack of a better word, I could only translate an East Asian Brush as 'writing brush' - because it's designed specifically for expressive lines as required in Eastern calligraphy.  Another difference  between Western and Eastern calligraphy is the paper used.  Eastern art papers are absorbent  and you can get a wide range of effects depending on the paper type and how diluted the ink is.  There are even a few types of ink  that you can choose from giving you even more variations.

In the future, we might create  a new app specific for this ancient Eastern art form, making it easy for users to use subtle ink effects like  these:

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And in response to Wacom's effort in promoting digital  stationery, here is a calligraphy piece  '文房具', which means  Stationery in Japanese, done by our Dr.  Nelson Chu earlier:
Let us know if you'd like to see an  app specific for Eastern  calligraphy  from us.
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Teclast X16 Power 台電平板

21/2/2016

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We recently acquired a Teclast X16 Power, which  uses the same Intel  Atom  CPU   z8700  as the MS  Surface 3  does.  It  can be paired with an 'active'  stylus  (it's not clear exactly what Teclast meant, but it looks like its AES - Active EletroStatic), which supports pressure but not tilt.  The biggest difference from an traditional EMR stylus is that  this Active pen doesn't support hovering meaning that you do not know exactly where you're hitting the surface until you actually hit it.  
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We  tried doing calligraphy on it.  The pen tip is so firm - we actually  need to update Expresii's Pressure Adjustment range so that we can stroke without pressing too hard on the screen  (the tip would scratch the protective film that came with the machine).   We  also encountered the broken paper texture bug that some  of  our users    reported earlier   on this new machine on Win  10.  With this machine on our hands, we are able to do something  to avoid this bug, at least on our X16 Power.  In case you still get such a bug even with  the latest update of Expresii,  please let us know. 
This X16 Power  is priced similarly  as the Cube i7 Stylus we  tried  earlier.  It  has a bigger screen but a slower processor  (4o-sth   FPS  vs  60-sth      FPS  in Expresii Full mode).  It consumes less power  and thus has much better   thermal  (stays cool, fanless)  than the Cube i7 .     The speed is not ideal  for Expresii  Full, but it's a rather low-cost machine  that  you can also use with Android  5, in addition  to Windows 10.  You  can also  get  a  keyboard cover  free (depending on the seller).  It has 8GB    of RAM  - as if it's a top model  of  the MS Surface Pro  line ^_^.   Overall, it's a not-bad tablet if you don't feel like spending a whole bunch  (for  comparison  the cheapest  2GB-RAM  Surface 3  is  ~$400    right now). 
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