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Colorizing line art is a pivotal task in the production of hand-drawn cel animation. This typically involves digital painters using a paint bucket tool to manually color each segment enclosed by lines, based on RGB values predetermined by a…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Yuekun Dai , Shangchen Zhou , Qinyue Li , Chongyi Li , Chen Change Loy

Color constancy is the recovery of true surface color from observed color, and requires estimating the chromaticity of scene illumination to correct for the bias it induces. In this paper, we show that the per-pixel color statistics of…

Computer Vision and Pattern Recognition · Computer Science 2015-12-08 Ayan Chakrabarti

Image colorization is a challenging problem due to multi-modal uncertainty and high ill-posedness. Directly training a deep neural network usually leads to incorrect semantic colors and low color richness. While transformer-based methods…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Xiaoyang Kang , Tao Yang , Wenqi Ouyang , Peiran Ren , Lingzhi Li , Xuansong Xie

Diffusion models have exhibited impressive prowess in the text-to-image task. Recent methods add image-level structure controls, e.g., edge and depth maps, to manipulate the generation process together with text prompts to obtain desired…

Computer Vision and Pattern Recognition · Computer Science 2024-08-23 Yibo Zhao , Liang Peng , Yang Yang , Zekai Luo , Hengjia Li , Yao Chen , Zheng Yang , Xiaofei He , Wei Zhao , qinglin lu , Boxi Wu , Wei Liu

Accurate 3D object detection and understanding for self-driving cars heavily relies on LiDAR point clouds, necessitating large amounts of labeled data to train. In this work, we introduce an innovative pre-training approach, Grounded Point…

Computer Vision and Pattern Recognition · Computer Science 2024-02-27 Tai-Yu Pan , Chenyang Ma , Tianle Chen , Cheng Perng Phoo , Katie Z Luo , Yurong You , Mark Campbell , Kilian Q. Weinberger , Bharath Hariharan , Wei-Lun Chao

Text-to-image generation models have advanced rapidly, yet achieving fine-grained control over generated images remains difficult, largely due to limited understanding of how semantic information is encoded. We develop an interpretation of…

Machine Learning · Computer Science 2026-03-13 Mateusz Pach , Jessica Bader , Quentin Bouniot , Serge Belongie , Zeynep Akata

Point management is critical for optimizing 3D Gaussian Splatting models, as point initiation (e.g., via structure from motion) is often distributionally inappropriate. Typically, Adaptive Density Control (ADC) algorithm is adopted,…

Computer Vision and Pattern Recognition · Computer Science 2025-04-22 Haosen Yang , Chenhao Zhang , Wenqing Wang , Marco Volino , Adrian Hilton , Li Zhang , Xiatian Zhu

Exemplar-based image colorization aims to colorize a target grayscale image based on a color reference image, and the key is to establish accurate pixel-level semantic correspondence between these two images. Previous methods search for…

Computer Vision and Pattern Recognition · Computer Science 2023-11-30 Siqi Chen , Xueming Li , Xianlin Zhang , Mingdao Wang , Yu Zhang , Yue Zhang

Video colorization is a challenging task that involves inferring plausible and temporally consistent colors for grayscale frames. In this paper, we present ColorDiffuser, an adaptation of a pre-trained text-to-image latent diffusion model…

Computer Vision and Pattern Recognition · Computer Science 2023-06-05 Hanyuan Liu , Minshan Xie , Jinbo Xing , Chengze Li , Tien-Tsin Wong

Automatic colorization is the process of adding color to greyscale images. We condition this process on language, allowing end users to manipulate a colorized image by feeding in different captions. We present two different architectures…

Computer Vision and Pattern Recognition · Computer Science 2018-04-18 Varun Manjunatha , Mohit Iyyer , Jordan Boyd-Graber , Larry Davis

Recent colorization works implicitly predict the semantic information while learning to colorize black-and-white images. Consequently, the generated color is easier to be overflowed, and the semantic faults are invisible. As a human…

Computer Vision and Pattern Recognition · Computer Science 2021-08-17 Man M. Ho , Lu Zhang , Alexander Raake , Jinjia Zhou

Digital camera pipelines employ color constancy methods to estimate an unknown scene illuminant, in order to re-illuminate images as if they were acquired under an achromatic light source. Fully-supervised learning approaches exhibit…

Computer Vision and Pattern Recognition · Computer Science 2019-04-05 Steven McDonagh , Sarah Parisot , Fengwei Zhou , Xing Zhang , Ales Leonardis , Zhenguo Li , Gregory Slabaugh

The colorful appearance of a physical painting is determined by the distribution of paint pigments across the canvas, which we model as a per-pixel mixture of a small number of pigments with multispectral absorption and scattering…

Graphics · Computer Science 2018-07-23 Jianchao Tan , Stephen DiVerdi , Jingwan Lu , Yotam Gingold

Color smudge operations from digital painting software enable users to create natural shading effects in high-fidelity paintings by interactively mixing colors. To precisely control results in traditional painting software, users tend to…

Graphics · Computer Science 2024-05-07 Ying Jiang , Pengfei Xu , Congyi Zhang , Hongbo Fu , Henry Lau , Wenping Wang

Colour is one of the most perceptually salient yet least controllable attributes in image generation. Although recent diffusion models can modify object colours from user instructions, their results often deviate from the intended hue,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-20 Yuqi Yang , Dongliang Chang , Yijia Ling , Ruoyi Du , Zhanyu Ma

In the field of computer vision, the persistent presence of color bias, resulting from fluctuations in real-world lighting and camera conditions, presents a substantial challenge to the robustness of models. This issue is particularly…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Yunpeng Gong , Jiaquan Li , Lifei Chen , Min Jiang

Human beings can imagine the colours of a grayscale image with no particular effort thanks to their ability of semantic feature extraction. Can an autonomous system achieve that? Can it hallucinate plausible and vibrant colours? This is the…

Computer Vision and Pattern Recognition · Computer Science 2020-12-07 Rita Pucci , Christian Micheloni , Gian Luca Foresti , Niki Martinel

The new alternative is to use deep learning to inpaint any image by utilizing image classification and computer vision techniques. In general, image inpainting is a task of recreating or reconstructing any broken image which could be a…

Computer Vision and Pattern Recognition · Computer Science 2022-04-07 Narayana Darapaneni , Vaibhav Kherde , Kameswara Rao , Deepali Nikam , Swanand Katdare , Anima Shukla , Anagha Lomate , Anwesh Reddy Paduri

Since specular reflection often exists in the real captured images and causes deviation between the recorded color and intrinsic color, specular reflection separation can bring advantages to multiple applications that require consistent…

Computer Vision and Pattern Recognition · Computer Science 2022-01-26 Sijia Wen , Yingqiang Zheng , Feng Lu

Automatic color enhancement is aimed to adaptively adjust photos to expected styles and tones. For current learned methods in this field, global harmonious perception and local details are hard to be well-considered in a single model…

Computer Vision and Pattern Recognition · Computer Science 2019-07-23 Chaowei Shan , Zhizheng Zhang , Zhibo Chen