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Related papers: Learning to Shadow Hand-drawn Sketches

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We consider the problem of reconstructing a 3D scene from multiple sketches. We propose a pipeline which involves (1) stitching together multiple sketches through use of correspondence points, (2) converting the stitched sketch into a…

Computer Vision and Pattern Recognition · Computer Science 2025-05-21 Abhimanyu Talwar , Julien Laasri

Head shapes play an important role in 3D character design. In this work, we propose SimpModeling, a novel sketch-based system for helping users, especially amateur users, easily model 3D animalmorphic heads - a prevalent kind of heads in…

Computer Vision and Pattern Recognition · Computer Science 2021-08-06 Zhongjin Luo , Jie Zhou , Heming Zhu , Dong Du , Xiaoguang Han , Hongbo Fu

We propose Light-Geometry Interaction (LGI) maps, a novel representation that encodes light-aware occlusion from monocular depth. Unlike ray tracing, which requires full 3D reconstruction, LGI captures essential light-shadow interactions…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Shan Wang , Peixia Li , Chenchen Xu , Ziang Cheng , Jiayu Yang , Hongdong Li , Pulak Purkait

Image composition targets at inserting a foreground object into a background image. Most previous image composition methods focus on adjusting the foreground to make it compatible with background while ignoring the shadow effect of…

Computer Vision and Pattern Recognition · Computer Science 2022-05-12 Yan Hong , Li Niu , Jianfu Zhang , Liqing Zhang

Articulated hand pose and shape estimation is an important problem for vision-based applications such as augmented reality and animation. In contrast to the existing methods which optimize only for joint positions, we propose a fully…

Computer Vision and Pattern Recognition · Computer Science 2018-08-29 Jameel Malik , Ahmed Elhayek , Fabrizio Nunnari , Kiran Varanasi , Kiarash Tamaddon , Alexis Heloir , Didier Stricker

We present a mechanism to compute a sketch (succinct summary) of how a complex modular deep network processes its inputs. The sketch summarizes essential information about the inputs and outputs of the network and can be used to quickly…

Machine Learning · Computer Science 2019-08-08 Badih Ghazi , Rina Panigrahy , Joshua R. Wang

We suggest a method to directly deep-learn light transport, i. e., the mapping from a 3D geometry-illumination-material configuration to a shaded 2D image. While many previous learning methods have employed 2D convolutional neural networks…

Graphics · Computer Science 2019-07-02 Pedro Hermosilla , Sebastian Maisch , Tobias Ritschel , Timo Ropinski

Image shadow removal is a crucial task in computer vision. In real-world scenes, shadows alter image color and brightness, posing challenges for perception and texture recognition. Traditional and deep learning methods often overlook the…

Computer Vision and Pattern Recognition · Computer Science 2025-02-20 Jiajia Liang

Given an abstract, deformed, ordinary sketch from untrained amateurs like you and me, this paper turns it into a photorealistic image - just like those shown in Fig. 1(a), all non-cherry-picked. We differ significantly from prior art in…

Computer Vision and Pattern Recognition · Computer Science 2023-03-31 Subhadeep Koley , Ayan Kumar Bhunia , Aneeshan Sain , Pinaki Nath Chowdhury , Tao Xiang , Yi-Zhe Song

Lighting prediction from a single image is becoming increasingly important in many vision and augmented reality (AR) applications in which shading and shadow consistency between virtual and real objects should be guaranteed. However, this…

Computer Vision and Pattern Recognition · Computer Science 2022-09-02 Jiayang Bai , Jie Guo , Chenchen Wan , Zhenyu Chen , Zhen He , Shan Yang , Piaopiao Yu , Yan Zhang , Yanwen Guo

Image composition refers to inserting a foreground object into a background image to obtain a composite image. In this work, we focus on generating plausible shadows for the inserted foreground object to make the composite image more…

Computer Vision and Pattern Recognition · Computer Science 2024-01-05 Xinhao Tao , Junyan Cao , Yan Hong , Li Niu

In this paper, we present TeachNet, a novel neural network architecture for intuitive and markerless vision-based teleoperation of dexterous robotic hands. Robot joint angles are directly generated from depth images of the human hand that…

While much progress has been made in capturing high-quality facial performances using motion capture markers and shape-from-shading, high-end systems typically also rely on rotoscope curves hand-drawn on the image. These curves are…

Computer Vision and Pattern Recognition · Computer Science 2018-12-10 Michael Bao , Jane Wu , Xinwei Yao , Ronald Fedkiw

Shadow removal is an important computer vision task aiming at the detection and successful removal of the shadow produced by an occluded light source and a photo-realistic restoration of the image contents. Decades of re-search produced a…

Computer Vision and Pattern Recognition · Computer Science 2020-10-23 Florin-Alexandru Vasluianu , Andres Romero , Luc Van Gool , Radu Timofte

Most shadow removal methods rely on the invasion of training images associated with laborious and lavish shadow region annotations, leading to the increasing popularity of shadow image synthesis. However, the poor performance also stems…

Computer Vision and Pattern Recognition · Computer Science 2023-07-11 Yunshan Zhong , Lizhou You , Yuxin Zhang , Fei Chao , Yonghong Tian , Rongrong Ji

This paper presents a new method for shadow removal using unpaired data, enabling us to avoid tedious annotations and obtain more diverse training samples. However, directly employing adversarial learning and cycle-consistency constraints…

Computer Vision and Pattern Recognition · Computer Science 2020-05-19 Xiaowei Hu , Yitong Jiang , Chi-Wing Fu , Pheng-Ann Heng

Manipulating the light source of given images is an interesting task and useful in various applications, including photography and cinematography. Existing methods usually require additional information like the geometric structure of the…

Computer Vision and Pattern Recognition · Computer Science 2020-10-16 Li-Wen Wang , Wan-Chi Siu , Zhi-Song Liu , Chu-Tak Li , Daniel P. K. Lun

With the advancement of generative artificial intelligence, previous studies have achieved the task of generating aesthetic images from hand-drawn sketches, fulfilling the public's needs for drawing. However, these methods are limited to…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Lifan Jiang , Shuang Chen , Boxi Wu , Xiaotong Guan , Jiahui Zhang

In this paper, we investigate the problem of automatically controllable artistic character line drawing generation from photographs by proposing a Vector Flow Aware and Line Controllable Image-to-Image Translation architecture, which can be…

Computer Vision and Pattern Recognition · Computer Science 2023-08-25 Chengyu Fang , Xianfeng Han

We propose a simple and efficient method for exploiting synthetic images when training a Deep Network to predict a 3D pose from an image. The ability of using synthetic images for training a Deep Network is extremely valuable as it is easy…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Mahdi Rad , Markus Oberweger , Vincent Lepetit