Expresii 寫意
  • Home
  • Showcase
    • Moxi Paint Engine
    • Yibi Brush Engine
    • A New Way to Paint
    • youji Rendering Engine
  • Download
    • Get / Buy Expresii >
      • Update Log
    • Sample Artwork Files
    • Third-Party
  • Support
    • Documentation >
      • End User License Agreement
      • Privacy Policy
    • Video Tutorials
    • User Forum
    • FAQ
    • Feedback
    • Help Translate
  • About Us
    • Contact Us
    • Media Resources
    • Privacy
  • Blog
  • 主頁
  • 示範
  • 網誌
  • 下載
  • 關於我們
    • 聯絡我們

HK Illustration & Creative Show 2024 Spring

15/5/2024

Comments

 
We took part in the Hong Kong Illustration and Creative Show 2024 Spring, giving  some talk or demonstrattion at the CGLive booth.  During his talk, our Dr. Nelson Chu showed a little sneak peak of what he's working on for simulating Western watercolor. 
​​We are lucky to have Sensei Shuen to give a demonstration at the booth.  You can learn a lot from her on ink painting and the use of Expresii:
This piece "劔舞乾坤" (sword dance) is spirited.  The subject's pose, the composition, the linework, the contrast all contributed to the energetic look of it. Find out how it's done in the above video!

And here's the calligraphy our Dr. Nelson Chu did  as inscription for the painting:
The all new WACOM Movink was on pre-oder at the show. It's among the few places  where you can try the new hardware first hand. Pretty good price at HKD5889 there (compared to the offcial price in another region next to Hong Kong)! It's really thin and light.
Comments

Hong Kong Illstration and Creative Show June 2023

4/7/2023

Comments

 
We have invited  Sensei Shuen  to demo ink painting  at the Hong Kong Illustration and Creative Show on 26 June 2023. Listen to Sensei   Shuen  (in Cantonese, with English subtitle) as she paints, with tips in using Expresii and WACOM hardware:
Thanks for visiting!  Hopefully more people are aware of our invention and effort in digital painting development.
The spec of Windows machine used for the demo:
Picture
Basically, you need a good GPU  (graphics card) to run Expresii smoothly.  e.g. an nvidia 1060 with 6GB vRAM is good for running Expresii smoothly on a 4K monitor. If you're only using a full-HD monitor, you can go by with modern integrated  GPU like Intel Iris Xe. For example, the Microsoft Surface Pro 7 (i7) or 8 (i5) can already run Expresii smoothly on their own 2.5k monitor.

We thank CGLive and Wacom Hong Kong for their support!
Comments

2023 Year of the Rabbit

28/1/2023

Comments

 
We did some demos for the Year of the Rabbit 2023 using a Wacom tablet.   The  great thing about using Expresii is that it gives you organic quality of real brush and ink, but yet you can always undo and redo. 
書法 配圖 設計:
Picture
Finally,  we made a video on   Why Expresii is good for improvised sketching and more (in English, with a little intro in Chinese), which includes quotes from some artists:
Ink art is nothing if there's no happy accident.
Comments

Sleek 4K 15.6" Pen Display with MPP 2.0 Pen & Touch Review

21/6/2021

Comments

 
The cheapest 4K EMR pen display right now is not cheap (USD 829+).  Yet, they do not support multi-touch gesture, and are still a bit bulky.  Those who have used 2-in-1 or tablets would understand how much  I missed  touch gestures when I switch back to using a traditional EMR Pen Display from Huion or XP Pen. 

new Challenger: Portable Display with pen support

Portable displays - a    new category of device  that has emerged in recent years.   They have progressed quite a lot - you can now connect with a single USB type-C cable and have it powered entirely via the USB cable, its resolution getting up to 4K,  with touch and now pen support.   
​

What we tested here is a portable display from ehomewei  (their store at Amazon), which looks exactly like this  15.6"  pen   display branded as LUNE sold as a   kickstarter-like item  (at USD512 early bird)  in Japan. We got a model that doesn't have a G-Sensor, which allows automatic screen orientation change , from   TMall  at RMB2118 = USD332.
We tested the display with a Surface Book 2, Surface Go, Intel i5 NUC 8 and a desktop with Nvidia GTX 1060. The first three support USB type-C display out for connecting the display using just a single cable.  

They claim the screen itself is 4mm, but our measurement  reads more like 5.5mm.  Together with the stand, our measurement    reads more like 14mm instead of the claimed 10mm.  Nevertheless, it's still very thin.

The MPP 2.0 Pen 

The pen  it supports is an active pen complying to the Microsoft Pen Protocol (MPP) 2.0.   The included active pen requires AAAA battery to operate just like the Surface Pen, but you can get yourself one that uses rechargeable battery.

Tilt sensing even during hovering. Yes, this device supports pen tilt even during hover! This is something this display being better than a Surface device.  

Buttons bug.     looks like this display has some bug with button signals. We don't get an eraser signal when we press the lower side button of the included pen.   In fact, all tip and the two side buttons give button = 1 if we look at the Diagnostic page of Expresii. That means the side buttons are useless, at least for painting in Expresii. Using another MPP 2.0 pen,  we are able to button = 2 when we press the upper side button, so that means we get back the usage of at least one side button. The same pens give eraser signal and button = 2 when we press the lower and upper side buttons respectively on a Surface device, so that's definitely something the ehomewei is missing.  Testing further,  we found that some apps like Autodesk SketchBook pro gets eraser button signal, but others like Paint Tool SAI 1.2.5, Medibang Paint Pro 26.2 (v2.1.21), and Krita 4.4.5 (using Windows Ink) don't on the ehomewei.  On Surface Book 2, SAI, Medibang and Krita all respond to at least one of the side buttons of the same pens as eraser or color picker. We believe this is due to the ehomewei hardware only supporting certain pen API. Hopefully, ehomewei  can update their firmware to get this fixed in the future.

Multi-monitor.  Wacom's settings tool allows us to map the pen input to either of the monitors if you have say two monitors connected to your PC. There's no such a tool for ehomewei, but we were able to change the mapping by checking 'make this my main display' for the monitor we would like to map the pen input to in Windows 10's setting.

The 4K Screen

The screen is very bright, comparable to a Surface device.   We are unlucky to receive one that has a little dust behind the glass surface. That dust is several-pixel-wide so its quite visible.  It's rather troublesome to send it back so we may just have to live with it.   (╯_╰)
Picture
Unlucky to get one piece of dust under the screen.
Picture
Windows 10 says the device is not HDR capable.
Picture
We get 8-bit instead of the advertised 10-bit color.
We were not able to get HDR nor 10-bit color working using  Intel iGPU Iris 655  or nvidia GTX 1060 using type-C or HDMI cable respectively. Not sure why.  They have a built-in 'UltraHDR' option, but as far as we can tell, it only makes the color too bright and saturated - which is rather useless.

We do not have any color calibration hardware  to test the gamut but as far as we can tell, colors are rather different from that of a Surface Book 2 out-of-the-box. 

The Stand

The flip stand is handy.  When collapsed, the whole thing is only 14mm thick.   The hinge bends from 0 to 90 degrees, and by itself, we found it hard to to stand if you use it in portrait mode  (see video on right).  You can place the display in a 'wedge mode' like using a drafting table.    All the connectors and button control are on the two sides of the stand.   There's no VESA mount holes, which are probably too thick to be hosted on the screen itself.  I still wish there's a VESA option - maybe they can fit two holes in the stand? Two holes should be enough given the light weight.

Misc.

Speaker is included but its sound is tiny.  Playing YouTube videos, the volume is so low that sometimes it's hard to listen to people speaking.  We asked the manufacturer if the other model's built-in G-Sensor can act like a Windows tablet's G-Sensor. The answer is no, so we can't really use it for surface tilting to direct paint flow in Expresii. ​
You can even pair the pen display with a programmable keypad with dials for a clean setup:

Drawing experience

The host PC is an Intel " Bean Canyon " NUC 8 i5 (2018 released; 14nm) with Iris Plus 655 GPU, 8GB RAM. We used this PC because it's compact and support single-cable connection to the display. That 655 GPU is fast for Expresii at FUD display resolution but a little slow at 4K. Anyway, as you can see from the demos, it's still quite usable. If you use a  newer NUC like the latest 11th-gen with Iris Xe GPU (10nm), you should get quite a performance boost.
The drawing experience is very much like that of using a Surface device. Same pens stroking on glass surface, except you now have tilt sensing during hover. The display moves back a bit when you stroke on it,  just like using a Surface Book  in laptop mode. Using it in the 'wedge mode' is stable, but the angle is kind of fixed.  You may want to use a adjustable stand if you really want to use it extensively to paint.

Accuracy.   The cursor my be a bit off near the screen edges.  In comparison, the cursor on my Surface Book 2 follows more closely to the pen tip.

Verdicts

PictureCompared to a tradtional EMR pen display with thick bezels
Today, there're basically two major pen sensing tech's: EMR and Active pens. Traditional pen tablet and display use EMR (the ones offered by Wacom, Huion, or XP Pen) and they usually come with thick bezels.  Active pens include all the MPP pens (like the newer pens from HP, Dell, or Lenovo ) and also those from the USI camp. They require battery and the sensing modules are usually found as computer built-in's instead of peripherals.  Wacom's EMR offers the best in terms of capabilities, as it can sense tilt even during hover, and is the only solution that can sense barrel rotation. Now, this ehomewei display offers tilt sensing during hover too and in this regard, it means you get something even better than what a Surface device gives you.   The pen is interchangeable with other Surface Pen compatibles so you have many choices from different brands.

The ehomewei display   is essentially a very thin  and bright 4K screen that comes with pen and touch input support. When we  first saw the Microsoft Surface  Studio, we wished that Microsoft would sell the pen-and-touch display separately so that we can upgrade the computer unit instead of having to replace the whole all-in-one computer. Now, this portable display is basically what we asked for.

We're not sure when this would become  available globally. ehomewei currently sells their older non-pen models on Amazon. If it does come to your country, you should give it a serious consideration.

2021.07.08 Update:  Shuen Leung reported that the ehomewei gives wobbly lines when one tries to draw straight lines slowly.   Now, we put our hope for the perfect portable pen display at the XtendTouch Pro, which is supposed to give much better diagonal straight line performance.   We can't find an actual purchase link  after their kickstarter campaign ended.  Hope they're still shipping.

Comments

Using Expresii Watercolor with Sonar Pen via SpaceDesk

2/5/2021

Comments

 

The Sonar Pen

The SonarPen was launched through Kickstarter in 2018.  It was primarily designed for iOS and Android smartphones and tablets as a cheap alternative to the expensive styli like the Apple Pencil. 

We actually have been in contact with  SonarPen's creator Elton Leung since 2018.   We were hoping they can add Windows support ever since. To date, there's still no Windows driver but thanks to the support from SpaceDesk, we can now use it for Windows apps too.
Picture
The Sonar Pen
Picture
Sonar Pen with a disk tip and a side button
We also wished it supports tilt sensing but we're not sure if that would ever happen.

The SpaceDesk app

SpaceDesk is a software tool that allows a host machine to use other machines like tablets as its monitors.  Their ability to build a monitor wall is amazing. Recently they added support for relaying pen input too, so it's possible to use SpaceDesk as a wireless Pen Display. With SpaceDesk, we're now able to use SonarPen on Windows apps, including our Expresii that features beautiful organic digital watercolor. 
Previously, we tried   Easy Canvas Pro  (US$5 / year) and   SuperDisplay   (US$10 one time)   for Pen-Display application. Currently, we think SuperDisplay  gives the best performance among the three.  SuperDisplay  does support pen tilt, which is quite important for our app Expresii.   SpaceDesk doesn't support pen tilt nor  multi-touch gestures yet. SpaceDesk is currently free to use, while they also offer a Business license. Our current recommendation is still   SuperDisplay, which is the fastest, the most feature-complete and is inexpensive.   We look forward to SuperDisplay supporting the SonarPen.

2021.05.06 Update:  you can use USB tethering for faster connection on SpaceDesk.

What can still be added: ​It'd be great  if any of these programs can relay accelerometer/orientation sensor  readings and act as a G-Sensor  of Windows tablets so that we can directly control paper tilt in Expresii to direct the paint flow. Using other apps like  Sensor stream IMU+GPS  alongside is no good, as only one  app can be in the foreground and nowadays smartphones would have background apps dormant  after a few moments. We've tried putting the app in Battery Saving Exception or disable Battery  Optimization (on Android 9) but to no vain.

In the above video, we also show the new features of  Brush Tilt Control Pad    and   Auto Settle Timer:

Brush Tilt Control Pad

This is specifically added for the case of using SonarPen via SpaceDesk, since the pen is not tilt-sensitive and that SpaceDesk doesn't support pen tilt yet.  For other pens, usually their barrel (side) button can be re-assigned by the user, and we can use it as Mouse Right Button to adjust the brush tilt. However, in SpaceDesk, SonarPen's side button is fixed to toggle between touch and pen input. Our answer to this is the Brush Tilt Control Pad .  It acts like a virtual trackpad on screen - you can  use your finger, mouse or pen to drag on it to adjust the brush tilt.

​Paint Settle Timer

Picture
You can now stack paint in the same layer by settling paint. We've also added a timer for auto-settling. You can try these new features in a beta version of Expresii, which you can enable by selecting beta option in the System>Advanced tab. Please let us know how you like them.

Picture
Selecting Beta mode
Comments

Expresii on Surface Pro 7

13/11/2020

Comments

 
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)~☆
Comments

Suminagashi in Expresii (preview)

17/10/2020

Comments

 
This is an adaptation of the fluid simulation in Expresii to do Suminagashi ('墨流し' in Japanese), a form of paper marbling.   Suminagashi is said   to have originated from China and today it's called 水拓畫 in Chinese. What we show here is a WIP (work-in-progress) and has not yet been released in the public version of Expresii. 
We show that it's possible to load an image  acting as obstacle for the flow, thus creating flow patterns that relate to whatever you put in that image. One useful application is  making animated title sequence.
Changing the palette used results in interesting organic patterns. ​And what about applying the sprayer with suminagashi?
Let us know how you like it.
Comments

Lenovo Yoga Duet 7i & E-Color Pen 大千色彩 一筆入魂

31/8/2020

Comments

 
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!
Comments

Expresii in Singapore

29/9/2019

Comments

 
Earlier this month we were invited to visit NTU, Singapore.   Our Dr. Nelson Chu gave a talk titled "The Quest for Digital Ink: developing tools for Painting, Calligraphy & Animation"  (Abstract & Bio) on 20th Sept 2019, jointly organised by the School of Computer Science & Engineering, the   Alibaba-NTU Joint Research Institute, and the  NTU-UBC LILY Center. Dr. Chu shared his journey developing digital brush and paint dating back to 1999.  We also met with folks from Cacani the animation system.
We also took the chance to visit the Singapore Zoo,  and  used Expresii on a 2017 Surface Pro  to do some sketch  there:
We miss the food there already.  (*´▽`*) We look forward to visiting Singapore again!
Comments

Animated Film "Red Squirrel Mai" at Filmart 2019

24/3/2019

Comments

 
Picture
Red Squirrel Mai  2019 teaser
Expresii is being used for producing the animated feature film  Red Squirrel Mai 紅松鼠米高. Do check out    the teaser above (those from China can see it  here)!  This film uses Expresii extensively - both animation background and foreground  are drawn with Expresii.   The teaser video is shown at Hong Kong Filmart 2019 earlier this month.   We thank   Ink Culture Ltd and Rooftop Animation for producing such a meaningful work - this animation is the first one made in Hongkong/China that has a distinct style different from all previous works.   It's been only less than two years from the setting up studios in Hong Kong and GuangZhou.   
Seeing the teaser of Red Squirrel Mai for the first time reminds me of my feeling when I first saw a Kungfu movie of Bruce Lee - it's different from all the previous 'ink wash animation' I've seen! - Nelson Chu
第一次看到《紅松鼠米高》預告片給我的感覺,就像我當年第一次看到李小龍功夫片一樣 —— 這跟之前我看過的都不一樣啊!  - Nelson Chu
Note:You need to watch it on 4k uncompressed to really appreciate the difference. Previous "ink animations" often use simulated fume or make things blurry to give an impression of ink. In contrast, the teaser of <Mai> shows texture that is never seen before. 現在的動畫大都是‘單綫平凃’,而之前的’水墨動畫‘基本三類:1 用CG’雲烟’當水墨,2. 把東西 ’模糊化‘ 當水墨 3.用真的水墨筆觸貼圖。而此《紅》樣片出來的效果是有質感的!這個你必須要用4k 原片才感受到。網絡的FHD 版本太失真了!。。。所以才說像李小龍功夫片,李小龍給你的感覺是’真功夫‘,其他人的動作就是沒那麽快,不是同一個層次的。
Ink wash animation  is a  proud product of China from the 60's to the 80's. Nowadays,   many attempts have been made to modernize ink wash animation.   Our Expresii does provide a refreshing visual style that couldn't be achieved before.
One of the film Directors of Red Squirrel Mai   Angela Wong draw Mai the squirrel, the movie  protagonist,    on the spot:
Visitors can get a glimpse of of the production processing:
Our Nelson demonstrates calligraphy in the show:
And also some doodles (after the  famous comic artist 草日 from Hong Kong):
An inkjet printer was also setup there to print artwork done with Expresii on the spot:
We're lucky to encounter Kumamon as our Mai just stepped out of our booth: ^_^
 P.S. Now you know why we have to put up a notice forbidding new users to use Expresii for making feature films till later in 2019.   ^_^
Comments
<<Previous

    Expresii 寫意

    Previous Posts
    以前的文章

    May 2025
    November 2024
    September 2024
    June 2024
    May 2024
    November 2023
    August 2023
    July 2023
    June 2023
    January 2023
    November 2022
    October 2021
    July 2021
    June 2021
    May 2021
    April 2021
    March 2021
    February 2021
    December 2020
    November 2020
    October 2020
    August 2020
    June 2020
    April 2020
    January 2020
    December 2019
    November 2019
    October 2019
    September 2019
    August 2019
    July 2019
    May 2019
    April 2019
    March 2019
    February 2019
    January 2019
    December 2018
    November 2018
    September 2018
    July 2018
    June 2018
    April 2018
    March 2018
    February 2018
    January 2018
    December 2017
    October 2017
    August 2017
    July 2017
    June 2017
    May 2017
    April 2017
    February 2017
    January 2017
    December 2016
    November 2016
    October 2016
    September 2016
    July 2016
    June 2016
    May 2016
    April 2016
    March 2016
    February 2016
    January 2016
    December 2015
    October 2015
    September 2015
    August 2015
    July 2015
    June 2015
    March 2015
    February 2015
    January 2015
    December 2014
    November 2014
    October 2014
    September 2014
    August 2014
    July 2014
    June 2014
    April 2014
    November 2013
    October 2013
    July 2013
    February 2013
    January 2013
    December 2012

    Categories 分類

    All
    3rd Party Tool
    Animated
    Artists
    Calligraphy
    Demo
    Hardware
    Mac
    New Feature
    Publicity
    Purchase
    Surface
    Tech

    RSS Feed

Picture
© Expresii.com 2012-2025. All Rights Reserved.