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As an important component of the detector localization branch, bounding box regression loss plays a significant role in object detection tasks. The existing bounding box regression methods usually consider the geometric relationship between…

计算机视觉与模式识别 · 计算机科学 2024-01-15 Hao Zhang , Shuaijie Zhang

Blind image quality assessment (BIQA) remains a very challenging problem due to the unavailability of a reference image. Deep learning based BIQA methods have been attracting increasing attention in recent years, yet it remains a difficult…

计算机视觉与模式识别 · 计算机科学 2017-12-06 Hui Zeng , Lei Zhang , Alan C. Bovik

Omnidirectional image quality assessment (OIQA) has been one of the hot topics in IQA with the continuous development of VR techniques, and achieved much success in the past few years. However, most studies devote themselves to the uniform…

图像与视频处理 · 电气工程与系统科学 2025-01-22 Jiebin Yan , Jiale Rao , Xuelin Liu , Yuming Fang , Yifan Zuo , Weide Liu

Perceptual image quality assessment (IQA) is the task of predicting the visual quality of an image as perceived by a human observer. Current state-of-the-art techniques are based on deep representations trained in discriminative manner.…

图像与视频处理 · 电气工程与系统科学 2024-04-30 Simon Raviv , Gal Chechik

This paper presents Ego-Centric Intersection-over-Union (EC-IoU), addressing the limitation of the standard IoU measure in characterizing safety-related performance for object detectors in navigating contexts. Concretely, we propose a…

计算机视觉与模式识别 · 计算机科学 2025-01-03 Brian Hsuan-Cheng Liao , Chih-Hong Cheng , Hasan Esen , Alois Knoll

A key problem in blind image quality assessment (BIQA) is how to effectively model the properties of human visual system in a data-driven manner. In this paper, we propose a simple and efficient BIQA model based on a novel framework which…

计算机视觉与模式识别 · 计算机科学 2019-03-12 Da Pan , Ping Shi , Ming Hou , Zefeng Ying , Sizhe Fu , Yuan Zhang

In this paper, we propose a novel virtual reality image quality assessment (VR IQA) with adversarial learning for omnidirectional images. To take into account the characteristics of the omnidirectional image, we devise deep networks…

计算机视觉与模式识别 · 计算机科学 2018-04-12 Heoun-taek Lim , Hak Gu Kim , Yong Man Ro

Omnidirectional image quality assessment (OIQA) aims to predict the perceptual quality of omnidirectional images that cover the whole 180$\times$360$^{\circ}$ viewing range of the visual environment. Here we propose a blind/no-reference…

多媒体 · 计算机科学 2023-02-27 Wei Zhou , Zhou Wang

Four-variable-independent-regression localization losses, such as Smooth-$\ell_1$ Loss, are used by default in modern detectors. Nevertheless, this kind of loss is oversimplified so that it is inconsistent with the final evaluation metric,…

计算机视觉与模式识别 · 计算机科学 2021-12-06 Hanyang Peng , Shiqi Yu

Recently, remarkable progress has been made in weakly supervised object localization (WSOL) to promote object localization maps. The common practice of evaluating these maps applies an indirect and coarse way, i.e., obtaining tight bounding…

计算机视觉与模式识别 · 计算机科学 2020-06-16 Xiaolin Zhang , Yunchao Wei , Yi Yang , Fei Wu

In object detection, the intersection over union (IoU) threshold is frequently used to define positives/negatives. The threshold used to train a detector defines its \textit{quality}. While the commonly used threshold of 0.5 leads to noisy…

计算机视觉与模式识别 · 计算机科学 2019-06-25 Zhaowei Cai , Nuno Vasconcelos

The availability of real-world datasets is the prerequisite for developing object detection methods for autonomous driving. While ambiguity exists in object labels due to error-prone annotation process or sensor observation noises, current…

计算机视觉与模式识别 · 计算机科学 2020-08-04 Zining Wang , Di Feng , Yiyang Zhou , Lars Rosenbaum , Fabian Timm , Klaus Dietmayer , Masayoshi Tomizuka , Wei Zhan

In the field of state-of-the-art object detection, the task of object localization is typically accomplished through a dedicated subnet that emphasizes bounding box regression. This subnet traditionally predicts the object's position by…

计算机视觉与模式识别 · 计算机科学 2023-07-20 Peng Zhi , Haoran Zhou , Hang Huang , Rui Zhao , Rui Zhou , Qingguo Zhou

360{\deg} cameras have gained popularity over the last few years. In this paper, we propose two fundamental techniques -- Field-of-View IoU (FoV-IoU) and 360Augmentation for object detection in 360{\deg} images. Although most object…

计算机视觉与模式识别 · 计算机科学 2022-09-26 Miao Cao , Satoshi Ikehata , Kiyoharu Aizawa

Subjective perceptual image quality can be assessed in lab studies by human observers. Objective image quality assessment (IQA) refers to algorithms for estimation of the mean subjective quality ratings. Many such methods have been…

计算机视觉与模式识别 · 计算机科学 2019-08-20 Markus Wagner , Hanhe Lin , Shujun Li , Dietmar Saupe

While formal robustness verification has seen significant success in image classification, scaling these guarantees to object detection remains notoriously difficult due to complex non-linear coordinate transformations and…

Label assignment plays a significant role in modern object detection models. Detection models may yield totally different performances with different label assignment strategies. For anchor-based detection models, the IoU (Intersection over…

计算机视觉与模式识别 · 计算机科学 2022-09-20 Tianxiao Zhang , Bo Luo , Ajay Sharda , Guanghui Wang

Bounding box regression is the crucial step in object detection. In existing methods, while $\ell_n$-norm loss is widely adopted for bounding box regression, it is not tailored to the evaluation metric, i.e., Intersection over Union (IoU).…

计算机视觉与模式识别 · 计算机科学 2019-11-20 Zhaohui Zheng , Ping Wang , Wei Liu , Jinze Li , Rongguang Ye , Dongwei Ren

We present a novel quality assessment method which can predict the perceptual quality of point clouds from new scenes without available annotations by leveraging the rich prior knowledge in images, called the Distribution-Weighted…

计算机视觉与模式识别 · 计算机科学 2025-01-24 Yipeng Liu , Qi Yang , Yujie Zhang , Yiling Xu , Le Yang , Zhu Li

We introduce a new challenge for computer and robotic vision, the first ACRV Robotic Vision Challenge, Probabilistic Object Detection. Probabilistic object detection is a new variation on traditional object detection tasks, requiring…

机器人学 · 计算机科学 2019-04-09 John Skinner , David Hall , Haoyang Zhang , Feras Dayoub , Niko Sünderhauf