Meeting Agenda

Date:	April 19, 2018
Location:	DC 1331
Time:	1:30
Chair:	Scarier than geese

1. Acceptance of the Agenda - additions or deletions

2. Coffee Hour

Coffee hour last week:: Elodie - thanks!
Coffee hour this week:: Volunteers?
Coffee hour next week:: Volunteers?

3. Forthcoming

Date:	April 26, 2018	May 3, 2018	May 10, 2018	May 17, 2018
Location:	DC 1331 1:30	DC 1331 1:30	CANCELLED!	DC 1331 1:30
Chair:	Andrew Tinits	Christopher Batty	-	JC Chang
Technical Presentation:	Honk!	Andrew Tinits	-	Christopher Batty

4. Technical Presentation

Greg Philbrick	Title : CrossShade: Shading Concept Sketches Using Cross-Section Curves Abstract: We facilitate the creation of 3D-looking shaded production drawingsfrom concept sketches. The key to our approach is a class ofcommonly used construction curves known as cross-sections, thatfunction as an aid to both sketch creation and viewer understandingof the depicted 3D shape. In particular, intersections of thesecurves, or cross-hairs, convey valuable 3D information, that viewerscompose into a mental model of the overall sketch. We use theartist-drawn cross-sections to automatically infer the 3D normalsacross the sketch, enabling 3D-like rendering.The technical contribution of our work is twofold. First, we distillartistic guidelines for drawing cross-sections and insights fromperception literature to introduce an explicit mathematical formulationof the relationships between cross-section curves and the geometrythey aim to convey. We then use these relationships to developan algorithm for estimating a normal field from cross-sectioncurve networks and other curves present in concept sketches. Wevalidate our formulation and algorithm through a user study and aground truth normal comparison. As demonstrated by the examplesthroughout the paper, these contributions enable us to shade a widerange of concept sketches with a variety of rendering styles.

Greg Philbrick

Title : CrossShade: Shading Concept Sketches Using Cross-Section Curves
Abstract:
We facilitate the creation of 3D-looking shaded production drawingsfrom concept sketches. The key to our approach is a class ofcommonly used construction curves known as cross-sections, thatfunction as an aid to both sketch creation and viewer understandingof the depicted 3D shape. In particular, intersections of thesecurves, or cross-hairs, convey valuable 3D information, that viewerscompose into a mental model of the overall sketch. We use theartist-drawn cross-sections to automatically infer the 3D normalsacross the sketch, enabling 3D-like rendering.The technical contribution of our work is twofold. First, we distillartistic guidelines for drawing cross-sections and insights fromperception literature to introduce an explicit mathematical formulationof the relationships between cross-section curves and the geometrythey aim to convey. We then use these relationships to developan algorithm for estimating a normal field from cross-sectioncurve networks and other curves present in concept sketches. Wevalidate our formulation and algorithm through a user study and aground truth normal comparison. As demonstrated by the examplesthroughout the paper, these contributions enable us to shade a widerange of concept sketches with a variety of rendering styles.

5. Discussion Items

6. Action Items

7. Lab Events

CGL meeting on May 10th is cancelled because people going to Graphics Interface.

8. Conferences and Special Journal Issues

Graphics Interface 2018, May 8-11, Toronto; early registration April 19
SIGGRAPH 2018, August 12-16, 2018; early registration June 22
Expressive 2018 in Victoria, BC. --> http://expressive.graphics/2018/

9. Directors' Meeting

10. Seminars and Events

Thursday, 19 April 2018, 2:30PM - Computer Science (Cryptography, Security, and Privacy (CrySP) Group), DC 1304

Joel Reardon: -- �Won�t Somebody Think of the Children?� Examining COPPA Compliance at Scale
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Friday, 20 April 2018, 9:30AM - Computer Science (Artificial Intelligence Lab), DC 2585

Zhucheng Tu: -- An Experimental Analysis of Multi-Perspective Convolutional Neural Networks
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Friday, 20 April 2018, 10:30AM - Computer Science (Data Systems Group), DC 1304 [New!]

Lei Zou: -- Speedup Set Intersections in Graph Algorithms using SIMD Instructions
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Monday, 23 April 2018, 10:30AM - Computer Science (Data Systems Group), DC 1302 [New!]

Barzan Mozafari: -- Making Approximate Query Processing Mainstream: Progress and the Road Ahead
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Thursday, 26 April 2018, 10:30AM - Computer Science (Data Systems Group), DC 1304 [New!]

Rachel Pottinger: -- Improving Understanding and Exploration of Data by Non-Database Experts
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Also see other Math and CS postings.