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With the involvement of artificial intelligence (AI), sketches can be automatically generated under certain topics. Even though breakthroughs have been made in previous studies in this area, a relatively high proportion of the generated…

Computer Vision and Pattern Recognition · Computer Science 2020-11-10 Yunkui Pang , Zhiqing Pan , Ruiyang Sun , Shuchong Wang

LiveSketch is a novel algorithm for searching large image collections using hand-sketched queries. LiveSketch tackles the inherent ambiguity of sketch search by creating visual suggestions that augment the query as it is drawn, making query…

Computer Vision and Pattern Recognition · Computer Science 2019-04-16 John Collomosse , Tu Bui , Hailin Jin

Sketch-based image retrieval (SBIR) is a challenging task due to the large cross-domain gap between sketches and natural images. How to align abstract sketches and natural images into a common high-level semantic space remains a key problem…

Computer Vision and Pattern Recognition · Computer Science 2019-11-13 Jianjun Lei , Yuxin Song , Bo Peng , Zhanyu Ma , Ling Shao , Yi-Zhe Song

How to obtain the desirable representation of a 3D shape, which is discriminative across categories and polymerized within classes, is a significant challenge in 3D shape retrieval. Most existing 3D shape retrieval methods focus on…

Computer Vision and Pattern Recognition · Computer Science 2019-01-23 Zhaoqun Li , Cheng Xu , Biao Leng

Architectures based on siamese networks with triplet loss have shown outstanding performance on the image-based similarity search problem. This approach attempts to discriminate between positive (relevant) and negative (irrelevant) items.…

Computer Vision and Pattern Recognition · Computer Science 2021-04-23 Anibal Fuentes , Jose M. Saavedra

Sketching enables many exciting applications, notably, image retrieval. The fear-to-sketch problem (i.e., "I can't sketch") has however proven to be fatal for its widespread adoption. This paper tackles this "fear" head on, and for the…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Ayan Kumar Bhunia , Subhadeep Koley , Abdullah Faiz Ur Rahman Khilji , Aneeshan Sain , Pinaki Nath Chowdhury , Tao Xiang , Yi-Zhe Song

Sketches are highly expressive, inherently capturing subjective and fine-grained visual cues. The exploration of such innate properties of human sketches has, however, been limited to that of image retrieval. In this paper, for the first…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Pinaki Nath Chowdhury , Ayan Kumar Bhunia , Aneeshan Sain , Subhadeep Koley , Tao Xiang , Yi-Zhe Song

Generating high-quality 3D models from 2D sketches is a challenging task due to the inherent ambiguity and sparsity of sketch data. In this paper, we present S3D, a novel framework that converts simple hand-drawn sketches into detailed 3D…

Computer Vision and Pattern Recognition · Computer Science 2025-06-04 Hail Song , Wonsik Shin , Naeun Lee , Soomin Chung , Nojun Kwak , Woontack Woo

In specific scenarios, face sketch can be used to identify a person. However, drawing a face sketch often requires exceptional skill and is time-consuming, limiting its widespread applications in actual scenarios. The new framework of…

Computer Vision and Pattern Recognition · Computer Science 2024-01-02 Liang Wang , Dawei Dai , Shiyu Fu , Guoyin Wang

Sketch-based image retrieval (SBIR) is challenging due to the inherent domain-gap between sketch and photo. Compared with pixel-perfect depictions of photos, sketches are iconic renderings of the real world with highly abstract. Therefore,…

Computer Vision and Pattern Recognition · Computer Science 2017-05-30 Peng Xu , Qiyue Yin , Yongye Huang , Yi-Zhe Song , Zhanyu Ma , Liang Wang , Tao Xiang , W. Bastiaan Kleijn , Jun Guo

Learning 3D models of all animals on the Earth requires massively scaling up existing solutions. With this ultimate goal in mind, we develop 3D-Fauna, an approach that learns a pan-category deformable 3D animal model for more than 100…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Zizhang Li , Dor Litvak , Ruining Li , Yunzhi Zhang , Tomas Jakab , Christian Rupprecht , Shangzhe Wu , Andrea Vedaldi , Jiajun Wu

Sketch-based 3D shape retrieval is a challenging task due to the large domain discrepancy between sketches and 3D shapes. Since existing methods are trained and evaluated on the same categories, they cannot effectively recognize the…

Computer Vision and Pattern Recognition · Computer Science 2022-07-01 Rui Xu , Zongyan Han , Le Hui , Jianjun Qian , Jin Xie

We present a system to recover the 3D shape and motion of a wide variety of quadrupeds from video. The system comprises a machine learning front-end which predicts candidate 2D joint positions, a discrete optimization which finds…

Computer Vision and Pattern Recognition · Computer Science 2018-11-15 Benjamin Biggs , Thomas Roddick , Andrew Fitzgibbon , Roberto Cipolla

We present a multi-scale approach to sketch-based shape retrieval. It is based on a novel multi-scale shape descriptor called Pyramidof- Parts, which encodes the features and spatial relationship of the semantic parts of query sketches. The…

Graphics · Computer Science 2015-02-17 Changqing Zou , Zhe Huang , Rynson W. H. Lau , Jianzhuang Liu , Hongbo Fu

Generating 3D models from face sketches is an active topic of research in Computer Graphics due to its potential to tremendously facilitate the modeling of faces for both professional 3D arists and novices. Motivated by the observation that…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Nancy Iskander

We introduce the novel problem of localizing all the instances of an object (seen or unseen during training) in a natural image via sketch query. We refer to this problem as sketch-guided object localization. This problem is distinctively…

Computer Vision and Pattern Recognition · Computer Science 2020-08-18 Aditay Tripathi , Rajath R Dani , Anand Mishra , Anirban Chakraborty

Zero-shot sketch-based image retrieval (ZS-SBIR) is a specific cross-modal retrieval task for retrieving natural images with free-hand sketches under zero-shot scenario. Previous works mostly focus on modeling the correspondence between…

Computer Vision and Pattern Recognition · Computer Science 2019-10-21 Xinxun Xu , Hao Wang , Leida Li , Cheng Deng

Recent breakthroughs in geometric Deep Learning (DL) and the availability of large Computer-Aided Design (CAD) datasets have advanced the research on learning CAD modeling processes and relating them to real objects. In this context, 3D…

Computer Vision and Pattern Recognition · Computer Science 2023-08-31 Dimitrios Mallis , Sk Aziz Ali , Elona Dupont , Kseniya Cherenkova , Ahmet Serdar Karadeniz , Mohammad Sadil Khan , Anis Kacem , Gleb Gusev , Djamila Aouada

In this work we introduce a cross modal image retrieval system that allows both text and sketch as input modalities for the query. A cross-modal deep network architecture is formulated to jointly model the sketch and text input modalities…

Computer Vision and Pattern Recognition · Computer Science 2018-05-01 Sounak Dey , Anjan Dutta , Suman K. Ghosh , Ernest Valveny , Josep Lladós , Umapada Pal

In this work, we investigate the problem of sketch-based object localization on natural images, where given a crude hand-drawn sketch of an object, the goal is to localize all the instances of the same object on the target image. This…

Computer Vision and Pattern Recognition · Computer Science 2023-03-16 Aditay Tripathi , Anand Mishra , Anirban Chakraborty