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The rapid advances in deep generative models over the past years have led to highly {realistic media, known as deepfakes,} that are commonly indistinguishable from real to human eyes. These advances make assessing the authenticity of visual…

计算机视觉与模式识别 · 计算机科学 2021-06-01 Yang He , Ning Yu , Margret Keuper , Mario Fritz

{The study of frequency components derived from Discrete Cosine Transform (DCT) has been widely used in image analysis. In recent years it has been observed that significant information can be extrapolated from them about the lifecycle of…

计算机视觉与模式识别 · 计算机科学 2024-03-25 Claudio Vittorio Ragaglia , Francesco Guarnera , Sebastiano Battiato

In many applications, such as development and testing of image processing algorithms, it is often necessary to simulate images containing realistic noise from solid-state photosensors. A high-level model of CCD and CMOS photosensors based…

天体物理仪器与方法 · 物理学 2014-12-15 Mikhail Konnik , James Welsh

Image harmonization task aims at harmonizing different composite foreground regions according to specific background image. Previous methods would rather focus on improving the reconstruction ability of the generator by some internal…

计算机视觉与模式识别 · 计算机科学 2022-12-14 Jingtang Liang , Chi-Man Pun

We present the Colorization Transformer, a novel approach for diverse high fidelity image colorization based on self-attention. Given a grayscale image, the colorization proceeds in three steps. We first use a conditional autoregressive…

计算机视觉与模式识别 · 计算机科学 2021-03-09 Manoj Kumar , Dirk Weissenborn , Nal Kalchbrenner

Despite their high accuracies, modern complex image classifiers cannot be trusted for sensitive tasks due to their unknown decision-making process and potential biases. Counterfactual explanations are very effective in providing…

计算机视觉与模式识别 · 计算机科学 2022-06-13 Kamran Alipour , Aditya Lahiri , Ehsan Adeli , Babak Salimi , Michael Pazzani

Deepfake detection methods have shown promising results in recognizing forgeries within a given dataset, where training and testing take place on the in-distribution dataset. However, their performance deteriorates significantly when…

计算机视觉与模式识别 · 计算机科学 2023-07-28 Aminollah Khormali , Jiann-Shiun Yuan

Generative AI has revolutionised visual content editing, empowering users to effortlessly modify images and videos. However, not all edits are equal. To perform realistic edits in domains such as natural image or medical imaging,…

Image composition is an important operation in image processing, but the inconsistency between foreground and background significantly degrades the quality of composite image. Image harmonization, aiming to make the foreground compatible…

计算机视觉与模式识别 · 计算机科学 2020-11-03 Wenyan Cong , Jianfu Zhang , Li Niu , Liu Liu , Zhixin Ling , Weiyuan Li , Liqing Zhang

CNN-based generative modelling has evolved to produce synthetic images indistinguishable from real images in the RGB pixel space. Recent works have observed that CNN-generated images share a systematic shortcoming in replicating high…

计算机视觉与模式识别 · 计算机科学 2021-04-01 Keshigeyan Chandrasegaran , Ngoc-Trung Tran , Ngai-Man Cheung

Stereoscopic videos can contain color mismatches between the left and right views due to minor variations in camera settings, lenses, and even object reflections captured from different positions. The presence of color mismatches can lead…

计算机视觉与模式识别 · 计算机科学 2024-08-09 Egor Chistov , Nikita Alutis , Dmitriy Vatolin

To enhance the controllability of text-to-image diffusion models, existing efforts like ControlNet incorporated image-based conditional controls. In this paper, we reveal that existing methods still face significant challenges in generating…

计算机视觉与模式识别 · 计算机科学 2024-11-20 Ming Li , Taojiannan Yang , Huafeng Kuang , Jie Wu , Zhaoning Wang , Xuefeng Xiao , Chen Chen

We propose Generative Probabilistic Image Colorization, a diffusion-based generative process that trains a sequence of probabilistic models to reverse each step of noise corruption. Given a line-drawing image as input, our method suggests…

计算机视觉与模式识别 · 计算机科学 2021-09-30 Chie Furusawa , Shinya Kitaoka , Michael Li , Yuri Odagiri

The digital image forensics based research works in literature classifying natural and computer generated images primarily focuses on binary tasks. These tasks typically involve the classification of natural images versus computer graphics…

计算机视觉与模式识别 · 计算机科学 2024-11-19 Manjary P. Gangan , Anoop Kadan , Lajish V L

In this paper, we analyze the statistics of error signals to assess the perceived quality of images. Specifically, we focus on the magnitude spectrum of error images obtained from the difference of reference and distorted images. Analyzing…

计算机视觉与模式识别 · 计算机科学 2018-11-14 Dogancan Temel , Ghassan AlRegib

Building on crucial insights into the determining factors of the visual integrity of an image and the property of deep convolutional neural network (CNN), we have developed the Deep Feature Consistent Deep Image Transformation (DFC-DIT)…

计算机视觉与模式识别 · 计算机科学 2017-09-12 Xianxu Hou , Jiang Duan , Guoping Qiu

Conditional image synthesis for generating photorealistic images serves various applications for content editing to content generation. Previous conditional image synthesis algorithms mostly rely on semantic maps, and often fail in complex…

计算机视觉与模式识别 · 计算机科学 2020-04-23 Aysegul Dundar , Karan Sapra , Guilin Liu , Andrew Tao , Bryan Catanzaro

Image harmonization is an important step in photo editing to achieve visual consistency in composite images by adjusting the appearances of foreground to make it compatible with background. Previous approaches to harmonize composites are…

计算机视觉与模式识别 · 计算机科学 2020-06-02 Konstantin Sofiiuk , Polina Popenova , Anton Konushin

The discovery of patient-specific imaging markers that are predictive of future disease outcomes can help us better understand individual-level heterogeneity of disease evolution. In fact, deep learning models that can provide data-driven…

计算机视觉与模式识别 · 计算机科学 2022-08-05 Amar Kumar , Anjun Hu , Brennan Nichyporuk , Jean-Pierre R. Falet , Douglas L. Arnold , Sotirios Tsaftaris , Tal Arbel

The widespread adoption of generative image models has highlighted the urgent need to detect artificial content, which is a crucial step in combating widespread manipulation and misinformation. Consequently, numerous detectors and…

计算机视觉与模式识别 · 计算机科学 2024-03-29 Patrick Grommelt , Louis Weiss , Franz-Josef Pfreundt , Janis Keuper