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Iris:a multi-constraint graphic layout generation system

Frontiers of Information Technology & Electronic Engineering 2024年第7期25卷 968-987页

作者： Liuqing CHEN Qianzhi JING yixin tsang Tingting ZHOU College of Computer Science and Technology Zhejiang UniversityHangzhou 310030China Zhejiang–Singapore Innovation and AI Joint Research Lab Hangzhou 310058China Alibaba Group Hangzhou 310034China

In graphic design,layout is a result of the interaction between the design elements in the foreground and background ***,prevalent research focuses on enhancing the quality of layout generation algorithms,overlooking the interaction and controllability that are essential for designers when applying these methods in realworld *** paper proposes a user-centered layout design system,Iris,which provides designers with an interactive environment to expedite the workflow,and this environment encompasses the features of user-constraint specification,layout generation,custom editing,and final *** satisfy the multiple constraints specified by designers,we introduce a novel generation model,multi-constraint LayoutVQ-VAE,for advancing layout generation under intra-and inter-domain *** and quantitative experiments on our proposed model indicate that it outperforms or is comparable to prevalent state-of-the-art models in multiple *** studies on Iris further demonstrate that the system significantly enhances design efficiency while achieving human-like layout designs.

关键词： Graphic layout generation Deep generative model Layout design system

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High-average-power, high-repetition-rate tunable terahertz difference frequency generation with GaSe crystal pumped by 2 μm dual-wavelength intracavity KTP optical parametric oscillator

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Photonics Research 2017年第2期5卷 82-87页

作者： DEXIAN YAN YUYE WANG DEGANG XU PENGXIANG LIU CHAO YAN JIA SHI HONGXIANG LIU yixin HE LONGHUANG TANG JIANCHEN FENG JIANQIN GUO WEI SHI KAI ZHONG YUEN H.tsang JIANQUAN YAO School of Precision Instrument and Opto-electronics Engineering Tianjin University Key Laboratory of Opto-electronics Information Technology Tianjin University Ministry of Education Institute of Neurosurgery Southwest Hospital Third Military Medical University Department of Applied Physics the Hong Kong Polytechnic University

We have demonstrated a high-average-power,high-repetition-rate optical terahertz(THz)source based on difference frequency generation(DFG)in the GaSe crystal by using a near-degenerate 2μm intracavity KTP optical parametric oscillator as the pump *** power of the 2μm dual-wavelength laser was up to 12.33 W with continuous tuning ranges of 1988.0–2196.2 nm/2278.4–2065.6 nm for two *** GaSe cystal lengths have been experimentally investigated for the DFG THz source in order to optimize the THz output power,which was in good agreement with the theoretical *** on an 8 mm long GaSe crystal,the THz wave was continuously tuned from 0.21 to 3 *** maximum THz average power of 1.66μW was obtained at repetition rate of 10 kHz under 1.48 *** single pulse energy amounted to 166 pJ and the conversion efficiency from 2 μm laser to THz output was 1.68×10^(-6).The signal-to-noise ratio of the detected THz voltage was 23 *** acceptance angle of DFG in the GaSe crystal was measured to be 0.16°.

关键词： GaSe THz KTP High-average-power m dual-wavelength intracavity KTP optical parametric oscillator rate

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