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This work studies the problem of panoptic symbol spotting, which is to spot and parse both countable object instances (windows, doors, tables, etc.) and uncountable stuff (wall, railing, etc.) from computer-aided design (CAD) drawings.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Wenlong Liu , Tianyu Yang , Yuhan Wang , Qizhi Yu , Lei Zhang

Spotting graphical symbols from the computer-aided design (CAD) drawings is essential to many industrial applications. Different from raster images, CAD drawings are vector graphics consisting of geometric primitives such as segments, arcs,…

Computer Vision and Pattern Recognition · Computer Science 2022-01-11 Zhaohua Zheng , Jianfang Li , Lingjie Zhu , Honghua Li , Frank Petzold , Ping Tan

With the widespread adoption of Computer-Aided Design(CAD) drawings in engineering, architecture, and industrial design, the ability to accurately interpret and analyze these drawings has become increasingly critical. Among various…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Xianlin Liu , Yan Gong , Bohao Li , Jiajing Huang , Bowen Du , Junchen Ye , Liyan Xu

We introduce CADSpotting, an effective method for panoptic symbol spotting in large-scale architectural CAD drawings. Existing approaches often struggle with symbol diversity, scale variations, and overlapping elements in CAD designs, and…

Computer Vision and Pattern Recognition · Computer Science 2025-09-22 Fuyi Yang , Jiazuo Mu , Yanshun Zhang , Mingqian Zhang , Junxiong Zhang , Yongjian Luo , Lan Xu , Jingyi Yu , Yujiao Shi , Yingliang Zhang

SymPoint is an initial attempt that utilizes point set representation to solve the panoptic symbol spotting task on CAD drawing. Despite its considerable success, it overlooks graphical layer information and suffers from prohibitively slow…

Computer Vision and Pattern Recognition · Computer Science 2024-07-03 Wenlong Liu , Tianyu Yang , Qizhi Yu , Lei Zhang

We study the task of panoptic symbol spotting, which involves identifying both individual instances of countable things and the semantic regions of uncountable stuff in computer-aided design (CAD) drawings composed of vector graphical…

Computer Vision and Pattern Recognition · Computer Science 2025-10-20 Xingguang Wei , Haomin Wang , Shenglong Ye , Ruifeng Luo , Yanting Zhang , Lixin Gu , Jifeng Dai , Yu Qiao , Wenhai Wang , Hongjie Zhang

Recognizing symbols in architectural CAD drawings is critical for various advanced engineering applications. In this paper, we propose a novel CAD data annotation engine that leverages intrinsic attributes from systematically archived CAD…

Computer Vision and Pattern Recognition · Computer Science 2025-11-13 Ruifeng Luo , Zhengjie Liu , Tianxiao Cheng , Jie Wang , Tongjie Wang , Xingguang Wei , Haomin Wang , YanPeng Li , Fu Chai , Fei Cheng , Shenglong Ye , Wenhai Wang , Yanting Zhang , Yu Qiao , Hongjie Zhang , Xianzhong Zhao

Parsing human poses in images is fundamental in extracting critical visual information for artificial intelligent agents. Our goal is to learn self-contained body part representations from images, which we call visual symbols, and their…

Computer Vision and Pattern Recognition · Computer Science 2013-04-24 Fang Wang , Yi Li

CAD (Computer-Aided Design) plays a crucial role in mechanical industry, where large numbers of similar-shaped CAD parts are often created. Efficiently reusing these parts is key to reducing design and production costs for enterprises.…

Information Retrieval · Computer Science 2024-06-19 Yuhan Quan , Huan Zhao , Jinfeng Yi , Yuqiang Chen

In this paper, we propose a machine learning approach to recognise engineering shape features such as holes, slots, etc. in a CAD mesh model. With the advent of digital archiving, newer manufacturing techniques such as 3D printing, scanning…

Computer Vision and Pattern Recognition · Computer Science 2021-12-16 Lakshmi Priya Muraleedharan , Ramanathan Muthuganapathy

We present a stepwise approach to estimate high dimensional Gaussian graphical models. We exploit the relation between the partial correlation coefficients and the distribution of the prediction errors, and parametrize the model in terms of…

Methodology · Statistics 2018-08-21 Ginette Lafit , Francisco J. Nogales , Marcelo Ruiz , Ruben H. Zamar

Pixelwise semantic image labeling is an important, yet challenging, task with many applications. Typical approaches to tackle this problem involve either the training of deep networks on vast amounts of images to directly infer the labels…

Computer Vision and Pattern Recognition · Computer Science 2017-12-12 Yu-Hui Huang , Xu Jia , Stamatios Georgoulis , Tinne Tuytelaars , Luc Van Gool

In many clinical contexts, detecting all lesions is imperative for evaluating disease activity. Standard approaches pose lesion detection as a segmentation problem despite the time-consuming nature of acquiring segmentation labels. In this…

Image and Video Processing · Electrical Eng. & Systems 2022-08-12 Chelsea Myers-Colet , Julien Schroeter , Douglas L. Arnold , Tal Arbel

Recent years have witnessed many advancements in the applications of 3D textured meshes. As the demand continues to rise, evaluating the perceptual quality of this new type of media content becomes crucial for quality assurance and…

Computer Vision and Pattern Recognition · Computer Science 2024-05-13 Armin Shafiee Sarvestani , Wei Zhou , Zhou Wang

Piping and Instrumentation Diagrams (P&ID) are ubiquitous in several manufacturing, oil and gas enterprises for representing engineering schematics and equipment layout. There is an urgent need to extract and digitize information from P&IDs…

Computer Vision and Pattern Recognition · Computer Science 2021-09-10 Shubham Paliwal , Monika Sharma , Lovekesh Vig

Geometric Deep Learning techniques have become a transformative force in the field of Computer-Aided Design (CAD), and have the potential to revolutionize how designers and engineers approach and enhance the design process. By harnessing…

Computational Geometry · Computer Science 2025-07-08 Negar Heidari , Alexandros Iosifidis

Detecting oriented objects along with estimating their rotation information is one crucial step for analyzing remote sensing images. Despite that many methods proposed recently have achieved remarkable performance, most of them directly…

Computer Vision and Pattern Recognition · Computer Science 2021-12-02 Yanjie Wang , Xu Zou , Zhijun Zhang , Wenhui Xu , Liqun Chen , Sheng Zhong , Luxin Yan , Guodong Wang

Access to large and diverse computer-aided design (CAD) drawings is critical for developing symbol spotting algorithms. In this paper, we present FloorPlanCAD, a large-scale real-world CAD drawing dataset containing over 10,000 floor plans,…

Computer Vision and Pattern Recognition · Computer Science 2021-12-01 Zhiwen Fan , Lingjie Zhu , Honghua Li , Xiaohao Chen , Siyu Zhu , Ping Tan

Image segmentation is an essential component in many image processing and computer vision tasks. The primary goal of image segmentation is to simplify an image for easier analysis, and there are two broad approaches for achieving this: edge…

Computer Vision and Pattern Recognition · Computer Science 2021-12-24 J. N. Mueller , J. N. Corcoran

Semantic segmentation is the pixel-wise labelling of an image. Since the problem is defined at the pixel level, determining image class labels only is not acceptable, but localising them at the original image pixel resolution is necessary.…

Computer Vision and Pattern Recognition · Computer Science 2022-03-17 Irem Ulku , Erdem Akagunduz
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