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<!DOCTYPE HTML>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Zhihao Liu 刘志浩</title>
<meta name="author" content="Zhihao Liu">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" type="text/css" href="stylesheet.css">
<link rel="icon" type="image/png" href="images/seal_icon.png">
</head>
<body>
<table style="width:100%;max-width:850px;border:0px;border-spacing:0px;border-collapse:separate;margin-right:auto;margin-left:auto;">
<tbody>
<tr style="padding:0px">
<td style="padding:0px">
<table style="width:100%;border:0px;border-spacing:0px;border-collapse:separate;margin-right:auto;margin-left:auto;">
<tbody>
<tr style="padding:0px">
<td style="padding:2.5%;width:63%;vertical-align:middle">
<p style="text-align:center">
<name>Zhihao Liu</name>
</p>
<p>
Hi, I am Zhihao Liu (刘 志浩) from Shandong, China. I am currently working at <a
href="https://www.tencent.com/en-us/index.html">Tencent (IEG)</a> as a graphics engineer. My past research topic during my Masters is about building creative systems for interactive computer graphics, with the aid of deep learning (AI) and virtual reality (VR) techniques.
<br><br>
</p>
<p style="text-align:center">
<a href="mailto:[email protected]">Email</a>  / 
<!-- <a href="https://orcid.org/0000-0003-1099-5745">ORCiD</a>  / 
<a href="https://space.bilibili.com/8109631/">Bilibili</a>  /  -->
<!-- <a href="data/CV_zhihaoliu.pdf">CV</a>  /  -->
<a href="https://github.com/RyuZhihao123">Github</a>  / 
</p>
</td>
<td style="padding:2.5%;width:25%;max-width:40%">
<a href="image/zhihao1.jpg"><img style="width:100%;max-width:100%" alt="profile photo"
src="image/zhihao1.jpg" class="hoverZoomLink"></a>
photo taken by my mom at the Yellow river estuary.
</td>
</tr>
</tbody>
</table>
<HR align=center width=400 color=#987cb9 SIZE=3>
<table style="width:100%;border:0px;border-spacing:0px;border-collapse:separate;margin-right:auto;margin-left:auto;">
<tbody>
<tr>
<td style="padding:10px;width:100%;vertical-align:middle">
<heading>Research</heading>
</td>
</tr>
</tbody>
</table>
<table style="width:100%;border:0px;border-spacing:0px;border-collapse:separate;margin-right:auto;margin-left:auto;">
<tbody>
<tr>
<td style="padding:10px;width:100%;vertical-align:middle">
<subheading> --- Publication</subheading>
(<strong>* denotes 'joint first authors'</strong>)
</td>
</tr>
</tbody>
</table>
<table style="width:100%;border:0px;border-spacing:0px;border-collapse:separate;margin-right:auto;margin-left:auto;">
<tbody>
<!-- paper -->
<tr>
<td style="padding:20px; width:25%;vertical-align:middle">
<img src='image/paper1.png' width="200">
</td>
<td style="padding:20px;width:75%;vertical-align:middle;line-height:1.5">
<papertitle>Single Image Tree Reconstruction via Adversarial Network.</papertitle>
<br>
<em><strong>Zhihao Liu</strong></em>, Kai Wu,
<a href="http://jianweiguo.net/">Jianwei Guo</a>, <a href="http://www.yunhaiwang.net/">Yunhai
Wang</a>, <a href="https://www.cgmi.uni-konstanz.de/en/persons/prof-dr-oliver-deussen/">Oliver
Deussen</a>, <a href="https://dblp.uni-trier.de/pid/218/0825.html">Zhanglin Cheng</a>.
<br>
<em>Graphical Models <strong>(GM)</strong></em>. 2021.
<br>
=> <a href="https://doi.org/10.1016/j.gmod.2021.101115">[pdf]</a>
<a href="https://www.bilibili.com/video/BV1Yv41147tP">[video]</a>
<a href="data/paperSingle.bib">[bibtex]</a>
<!-- (CCF-B, SCI journal) -->
<p></p>
<!-- <p>The monocular depth estimates produced by fully convolutional networks can be used to inform intrinsic image estimation.</p> -->
</td>
</tr>
<!-- paper -->
<tr>
<td style="padding:20px; width:25%;vertical-align:middle">
<img src='image/paper2.png' width="200">
</td>
<td style="padding:20px;width:75%;vertical-align:middle;line-height:1.5">
<papertitle>Mid-Air Finger Sketching for Tree Modeling.</papertitle>
<br>
Fanxing Zhang*, <em><strong>Zhihao Liu* (equal contribution)</strong></em>, <a
href="https://dblp.uni-trier.de/pid/218/0825.html">Zhanglin Cheng</a>, <a
href="https://www.cgmi.uni-konstanz.de/en/persons/prof-dr-oliver-deussen/">Oliver
Deussen</a>, <a href="http://cfcs.pku.edu.cn/baoquan/">Baoquan Chen</a>, <a
href="http://www.yunhaiwang.net/">Yunhai Wang</a>.
<br>
<em>IEEE Conference on Virtual Reality and 3D User Interfaces <strong>(IEEE VR)</strong></em>. 2021.
<br>
=> <a
href="https://conferences.computer.org/vrpub/pdfs/VR2021-2AyvgnPUHcYon9QQHz6BPD/255600a817/255600a817.pdf">[pdf]</a>
<a href="https://www.bilibili.com/video/BV1Lv41187iv">[video]</a>
<a href="data/paperMidair.bib">[bibtex]</a>
<!-- (CORE-A* conference) -->
<p></p>
<!-- <p>The monocular depth estimates produced by fully convolutional networks can be used to inform intrinsic image estimation.</p> -->
</td>
</tr>
<!-- paper -->
<tr>
<td style="padding:20px; width:25%;vertical-align:middle">
<img src='image/paper4.png' width="200">
</td>
<td style="padding:20px;width:75%;vertical-align:middle;line-height:1.5">
<papertitle>BuildingSketch: Freehand Mid-Air Sketching for Building Modeling.</papertitle>
<br>
<em><strong>Zhihao Liu*</strong></em>, Fanxing Zhang* (equal contribution), <a
href="https://dblp.uni-trier.de/pid/218/0825.html">Zhanglin Cheng</a>.
<br>
<em>IEEE International Symposium on Mixed and Augmented Reality <strong>(IEEEE ISMAR)</strong> </em>. 2021.
<br>
=> In press. <a
href="https://drive.google.com/file/d/17dPkK_6NWB70yZM358R02TEwmQ8kWSyN/view?usp=sharing">[Preprint]</a>
<a
href="https://drive.google.com/file/d/1_ZSRyIykJcTwy2rJZr_CrzF-Suk1L7Mh/view?usp=sharing">[Video]</a>
<!-- (CORE-A* conference) -->
<p></p>
<!-- <p>The monocular depth estimates produced by fully convolutional networks can be used to inform intrinsic image estimation.</p> -->
</td>
</tr>
<!-- paper -->
<tr>
<td style="padding:20px; width:25%;vertical-align:middle">
<img src='image/paper3.png' width="200">
</td>
<td style="padding:20px;width:75%;vertical-align:middle;line-height:1.5">
<papertitle>Interactive Modeling of Trees using VR Devices.</papertitle>
<br>
<em><strong>Zhihao Liu</strong></em>, Ce Shen, Zhi Li, Tingyu Weng, <a
href="https://www.cgmi.uni-konstanz.de/en/persons/prof-dr-oliver-deussen/">Oliver
Deussen</a>, <a href="https://dblp.uni-trier.de/pid/218/0825.html">Zhanglin Cheng</a>, <a
href="http://haptic.buaa.edu.cn/EN/English_team_WangDangxiao.htm">Dangxiao Wang</a>.
<br>
<em>International Conference on Virtual Reality and Visualization <STRONG>(ICVRV)</STRONG>.</em> 2019.
<br>
=> <a href="https://ieeexplore.ieee.org/document/9212896">[pdf]</a>
<a href="data/paperInteractiveTree.bib">[bibtex]</a>
<p></p>
<!-- <p>The monocular depth estimates produced by fully convolutional networks can be used to inform intrinsic image estimation.</p> -->
</td>
</tr>
</tbody>
</table>
<!--
<table style="width:100%;border:0px;border-spacing:0px;border-collapse:separate;margin-right:auto;margin-left:auto;">
<tbody>
<tr>
<td style="padding:10px;width:100%;vertical-align:middle">
<subheading> --- Other experience:</subheading>
</td>
</tr>
</tbody>
</table> -->
<!-- <table width="100%" align="center" border="0" cellpadding="20">
<tbody>
<tr>
<td style="padding:20px; width:25%;vertical-align:middle">
<img src='image/project5.png' width="200">
</td>
<td style="padding:20px;width:75%;vertical-align:middle;line-height:1.5">
<papertitle>[Brief] To Explore the Usage of Deep Learning for Machine Graphical Perception Task.</papertitle>
<br>
<em><strong>Zhihao Liu</strong></em>, Daniel Haehn, Donglai Wei, <a
href="https://dblp.uni-trier.de/pid/218/0825.html">Zhanglin Cheng</a>, <a
href="https://vcg.seas.harvard.edu/people/hanspeter-pfister">Hanspeter Pfister</a>, <a
href="http://cfcs.pku.edu.cn/baoquan/">Baoquan Chen</a>, <a
href="http://www.yunhaiwang.net/">Yunhai Wang</a>.
<br>
<em>Submitted to IEEE VIS.</em> 2020. (This work is currently paused after previous submission
as I've left that institution and joined the company. We got 3.5/4/3/4 scores at that time.)
<p></p>
</td>
</tr>
</tbody>
</table> -->
<HR align=center width=400 color=#987cb9 SIZE=3>
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<table style="width:100%;border:0px;border-spacing:0px;border-collapse:separate;margin-right:auto;margin-left:auto;">
<tbody>
<tr>
<td style="padding:10px;width:100%;vertical-align:middle">
<heading>Selected Fun Projects</heading>
(娱乐项目)
</td>
</tr>
</tbody>
</table>
<table style="width:100%;border:0px;border-spacing:0px;border-collapse:separate;margin-right:auto;margin-left:auto;">
<tbody>
<!-- project -->
<tr>
<td style="padding:20px; width:20%;vertical-align:middle">
<img src='image/project4.png' width="200">
</td>
<td style="padding:20px;width:75%;vertical-align:middle">
<projecttitle>Non-Photorealistic Rendering. 2016</projecttitle>
<br>
<p></p>
<p>I implemented several NPR effects with OpenGL, including Pencil and ink-water styles etc.,
with reference to a popular <a href="http://www.realtimerendering.com/">book</a> titled
'real-time rendering'. <a href="https://www.bilibili.com/video/BV1Fb411S76h">[video]</a></p>
</td>
</tr>
<!-- project -->
<tr>
<td style="padding:20px; width:20%;vertical-align:middle">
<img src='image/project2.png' width="200">
</td>
<td style="padding:20px;width:75%;vertical-align:middle">
<projecttitle>LowPoly-style image generator. 2018</projecttitle>
<br>
<p></p>
<p> I tried to reproduce a journal paper published in <i>the Visual Computer</i> <a
href="https://link.springer.com/article/10.1007/s00371-015-1082-2" target="_blank">[Gai
et al.]</a> during my undergraduate time. It translates the input images into the popular
low-polygon fashion style. <a href="https://www.bilibili.com/video/BV1xb411F7Kd">[video]</a>
</p>
</td>
</tr>
<!-- project -->
<tr>
<td style="padding:20px; width:20%;vertical-align:middle">
<img src='image/project1.png' width="200">
</td>
<td style="padding:20px;width:75%;vertical-align:middle">
<projecttitle>Sketch-based plant modeling system. 2016</projecttitle>
<br>
<p></p>
<p> This system is my attempt to reproduce the basic functions of a <i>Eurographics</i> article
<a href="https://www-ui.is.s.u-tokyo.ac.jp/~takeo/papers/okabe-eg2005-tree.pdf"
target="_blank">[Okabe et al.]</a> using OpenGL. It enables the users to create 3D plant
models through sketching several 2D skeletal strokes. <a
href="https://www.bilibili.com/video/BV1cW411c7Dj">[video]</a></p>
</td>
</tr>
<!-- project -->
<tr>
<td style="padding:20px; width:20%;vertical-align:middle">
<img src='image/project6.png' width="200">
</td>
<td style="padding:20px;width:75%;vertical-align:middle">
<projecttitle>Face detection via cascade AdaBoost classifier. 2018</projecttitle>
<br>
<p></p>
<p> Despite the fact that deep learning methods like Mask R-CNN greatly facilitate detecting
objects from photos. However, conventional algorithms that are devised more mathmatically
also deserve our study. This program achieved realtime face detection via cascade AdaBoost
in C++ (no use of OpenCV), with reference to <a
href="https://ieeexplore.ieee.org/document/990517?denied=">[Viola et al.]</a>
published in CVPR. <strong>(unfortunately, only my face was not detected
accurately).</strong></p>
</td>
</tr>
<!-- project -->
<tr>
<td style="padding:20px; width:20%;vertical-align:middle">
<img src='image/project7.png' width="200">
</td>
<td style="padding:20px;width:75%;vertical-align:middle">
<projecttitle>Simple Minecraft in 3 days using OpenGL! 2017</projecttitle>
<br>
<p></p>
<p> I tried to build a simple but nice
looking Minecraft using OpenGL within 3 days. I implemented the endless terrain and tried to
render it with high performance (average in 150 FPS). Also, people are able to freely
construct their own buildings. By the way, all the textures I used were designed by myself
from scratch using PhotoShop Haha.</p>
</td>
</tr>
<!-- project -->
<tr>
<td style="padding:20px; width:20%;vertical-align:middle">
<img src='image/project3.png' width="200">
</td>
<td style="padding:20px;width:75%;vertical-align:middle">
<projecttitle>SVM classification via sequential minimal optimization. 2017</projecttitle>
<br>
<p></p>
<p> This SVM visualization system was programmed using C++ and Qt, which was originally used for
my Numerical Optimization course at UCAS. The binary classification was solved by Sequential
Minimal Optimization (SMO). <a
href="https://www.bilibili.com/video/BV1Sb411k7c3">[video]</a></p>
</td>
</tr>
</tbody>
</table>
<!------------------------------------------------------------------------------->
<!------------------------------------------------------------------------------->
<!------------------------------------------------------------------------------->
<HR align=center width=400 color=#987cb9 SIZE=3>
<table width="100%" align="center" border="0" cellspacing="0" cellpadding="10">
<tbody>
<tr>
<td>
<heading>Misc</heading>
(乱七八糟)
</td>
</tr>
</tbody>
</table>
<table width="100%" align="center" border="0" cellpadding="20">
<tbody>
<tr>
<td width="75%" valign="center">
<subheading>+ Useful links:</subheading> <br><br>
- <a href="http://kesen.realtimerendering.com/">[Ke-Sen Huang]</a>
- <a href="https://dritchie.github.io/2017/10/12/three-phase-paper-writing.html">[Three-phase Paper Writing]</a>
- <a href="https://www.cc.gatech.edu/~turk/math_gr.html">[Mathmatics for Computer Graphics]</a>
<br> + <a href="https://sites.cs.ucsb.edu/~lingqi/">[Prof. Lingqi Yan's Rendering Courses]</a>
- <a href="https://danielcohenor.com/courses/">[Prof. Daniel Cohen-Or's Graphics Courses]</a>
<br> - <a href="https://www.ccf.org.cn/en/Bulletin/2019-05-13/663884.shtml">[CCF Recommended
List]</a>
- <a href="http://portal.core.edu.au/conf-ranks/">[Core Conferences]</a>
</td>
</tr>
<tr>
<td width="75%" valign="center">
<subheading>+ Gallery for my painting and other works:</subheading> <br><br>
<img src='image/drawing1.jpg' width="216">
<img src='image/gallery.png' width="500">
<img src='image/2.png' width="700">
<img src='image/1.png' width="700">
</td>
</tr>
</tbody>
</table>
<table style="width:100%;border:0px;border-spacing:0px;border-collapse:separate;margin-right:auto;margin-left:auto;">
<tbody>
<tr>
<td style="padding:0px">
<br>
<p style="text-align:right;font-size:small;">
Thanks to <a href="https://jonbarron.info/">Jon Barron</a> for this nice template!
</p>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</table>
</body>
</html>