A digital assistant for shading paper sketches  

作　　者：Amal Dev Parakkat Hari Hara Gowtham Sarang Joshi Ramanathan Muthuganapathy 

机构地区：[1]Indian Institute of Technology Madras,Chennai 600036,India [2]Indian Institute of Technology Guwahati,Assam 781039,India

出　　处：《Visual Computing for Industry,Biomedicine,and Art》2020年第1期152-167,共16页工医艺的可视计算（英文）

摘　　要：We present a mixed reality-based assistive system for shading paper sketches.Given a paper sketch made by an artist,our interface helps inexperienced users to shade it appropriately.Initially,using a simple Delaunaytriangulation based inflation algorithm,an approximate depth map is computed.The system then highlights areas(to assist shading)based on a rendering of the 2.5-dimensional inflated model of the input contour.With the help of a mixed reality system,we project the highlighted areas back to aid users.The hints given by the system are used for shading and are smudged appropriately to apply an artistic shading to the sketch.The user is given flexibility at various levels to simulate conditions such as height and light position.Experiments show that the proposed system aids novice users in creating sketches with impressive shading.

关 键 词：SHADING Paper sketch Mixed reality Iso-contours Delaunay triangulation Digital art 

分 类 号：TN9[电子电信—信息与通信工程]