We give a precise characterization for when the models of the tensor product of sketches are structurally isomorphic to the models of either sketch in the models of the other. For each base category K call the just mentioned property (sketch) K-multilinearity. Say that two sketches are K-compatible with respect to base category K just in case in each K-model, the limits for each limit specifica...

In this paper we introduce our approach to implementing context-rich sketch-based interfaces. By “contextrich” we mean interfaces for systems that refer to real-world objects. For example, a system that allowed the user to draw on an annotated video feed instead of a blank canvas would yield this kind of context-richness. We describe “Drawing on the World”, the concept that taking what is being...

In this paper we propose a multifactor biometric sketch authentication method based on biometric sketch recognition and a user’s personal knowledge about the sketch‘s content, which is negotiated between the biometric authentication system and the user during enrollment. The used sketch recognition algorithm is based on the active shape structural model (ASSM) for analyzing the structural varia...

Modeling of realistic garments is essential for creating believable virtual environments. Sketch-based modeling of garments presents an appealing, easy to use alternative to the established modeling approaches which are time consuming and require significant tailoring expertise. Unfortunately, the results created using existing sketch-based methods lack realism. Driven by human perception of ga...

中文的方位詞組主要可以前飾詞(以、之)與後綴詞(邊、面、頭),結合明確的方向指引 (如:前後、上下、左右、裡外等)組合而成。這樣的組成在實際使用上,卻會有避免使 用或不存在的組合邏輯,同時這樣的現象亦發生在方位短語構成上。本研究試使用計算 統計方法,分析在 Sketch Engine 中取得的方位名詞組的概念合成模式。在詞彙概念方 面,我們使用具知識層級架構的中文同義詞詞林[1]進行將詞彙的概念探索,並計算方 位短句裡所包含的知識概念組成模式,最後試從統計方法上尋得詮釋概念與方位詞組組 合模式的實證資訊。在本研究之中,我們使用了資訊度量方法中的互斥資訊(Point-wise Mutual Information, PMI)進行統計分析兩個詞組概念間的相關性,並使用多變數互斥資 訊 (Multivariate Mutual Information, MMI)[2]進行三個概念間的相關分...

In this paper we propose a multifactor biometric sketch authentication method based on biometric sketch recognition and a user’s personal knowledge about the sketch‘s content, which is negotiated between the biometric authentication system and the user during enrollment. The used sketch recognition algorithm is based on the active shape structural model (ASSM) for analyzing the structural varia...

In an introductory Engineering course with an annual enrollment of over 1000 students, a professor has little option but to rely on multiple choice exams for midterms and finals. Furthermore, the teaching assistants are too overloaded to give detailed feedback on submitted homework assignments. We introduce Mechanix, a computer-assisted tutoring system for engineering students. Mechanix uses re...

The diffusion of mobile devices and the development of their services and applications are connected with the possibility to communicate anytime and anywhere according to a natural approach, which combines different modalities (speech, sketch, etc.). A natural communication approach, such as sketch-based interaction, frequently produces ambiguities. Ambiguities can arise in sketch recognition p...

Abstract This paper aims to conduct a comprehensive study on facial-sketch synthesis (FSS). However, due the high cost of obtaining hand-drawn sketch datasets, there is lack complete benchmark for assessing development FSS algorithms over last decade. We first introduce high-quality dataset FSS, named FS2K, which consists 2 104 image-sketch pairs spanning three types styles, image backgrounds, ...