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2018 IEEE 3rd International Conference on Image, Vision and Computing (ICIVC)最新文献

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A New Hybrid Approach for Saliency Detection in Infrared Images 一种新的红外图像显著性检测混合方法
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492766
Xin Wang, Chunyan Zhang, Guofang Lv, Chen Ning
Saliency detection in infrared images plays a critical role in large amounts of practical applications, such as infrared image compression, target detection and tracking. A novel saliency detection method in a single infrared image is proposed in this paper. First, a local sparse representation based approach is designed to calculate the initial saliency map for an input infrared image. Then, to further remove the background information in the initial saliency map, a novel method based on two-dimensional maximum entropy/minimum cross entropy and maximum standard deviation is proposed to predict the foreground. By subtracting the predicted foreground from the original infrared image, the background information can be obtained. Finally, the initial saliency map is refined through the background information. The presented method is evaluated on the real-life infrared images and the experimental results show that the proposed method achieves better performance compared to the state-of-the-art algorithms.
红外图像的显著性检测在红外图像压缩、目标检测与跟踪等大量实际应用中起着至关重要的作用。提出了一种新的单幅红外图像显著性检测方法。首先,设计了一种基于局部稀疏表示的方法来计算输入红外图像的初始显著性映射。然后,为了进一步去除初始显著性图中的背景信息,提出了一种基于二维最大熵/最小交叉熵和最大标准差的前景预测方法。通过在原始红外图像中减去预测前景,得到背景信息。最后,通过背景信息对初始显著性图进行细化。在实际红外图像上对该方法进行了测试,实验结果表明,与现有算法相比,该方法具有更好的性能。
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引用次数: 0
An Effective Approach for Underwater Sonar Image Denoising Based on Sparse Representation 基于稀疏表示的水下声纳图像去噪方法
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492877
Di Wu, Xue Du, Kaiyu Wang
In order to remove the complex and severe noise from sonar image more effectively, an image denoising approach based on sparse representation is carried out in this paper. To decompose and then reconstruct the sonar image on DCT dictionary with OMP is effective for additive noise removing. Then a logarithmic transformation was applied on the previous reconstructed image to make it adapt to sparse representation denoising model. Experiments are provided to demonstrate the performance of the proposed approach. Results show that this method is efficient in removing additive and multiplicative noise from the sonar image and is also particularly appealing in terms of both denoising effect and keeping details.
为了更有效地去除声纳图像中复杂而严重的噪声,本文提出了一种基于稀疏表示的图像去噪方法。利用OMP对声纳图像在DCT字典上进行分解和重构,是去除加性噪声的有效方法。然后对重构图像进行对数变换,使其适应稀疏表示去噪模型。实验证明了该方法的有效性。结果表明,该方法能够有效地去除声纳图像中的加性和乘性噪声,并且在去噪效果和保留细节方面具有特殊的吸引力。
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引用次数: 20
HEVC Fast Intra Coding Based CTU Depth Range Prediction 基于HEVC快速内部编码的CTU深度范围预测
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492898
Zeqi Feng, Pengyu Liu, Ke-bin Jia, Kun Duan
Coding tree unit (CTU) partition technique provides excellent compression performance for HEVC at the expense of increased coding complexity. Therefore, a fast intra coding algorithm based CTU depth range prediction is proposed to reduce the complexity of HEVC intra coding herein. First, simple CTU s and complex CTU s are defined in line with their texture complexity, which are limited to different depth ranges. Then, the convolutional neural network architecture for HEVC intra depth range (HIDR-CNN) decision-making is proposed. It is used for CTU classification and depth range restriction. Last, the optimal CTU partition is achieved by recursive rate distortion (RD) cost calculation in the depth range. Experimental results show that the proposed algorithm can achieve average 27.54% encoding time reduction with negligible RD loss compared with HM 16.9. The proposed algorithm devotes to promote popularization of HEVC in realtime environments.
编码树单元(CTU)分割技术为HEVC提供了良好的压缩性能,但代价是增加了编码复杂度。为此,本文提出了一种基于CTU深度范围预测的快速帧内编码算法,以降低HEVC帧内编码的复杂度。首先,根据纹理复杂度定义简单CTU和复杂CTU,限制在不同的深度范围内。然后,提出了用于HEVC深度范围内(HIDR-CNN)决策的卷积神经网络架构。它用于CTU分类和深度范围限制。最后,在深度范围内通过递归率失真(RD)代价计算得到最优的CTU分区。实验结果表明,与传统算法相比,该算法平均可减少27.54%的编码时间,RD损失可忽略不计。该算法致力于促进HEVC在实时环境中的普及。
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引用次数: 10
Registration of Point Clouds with Feature Extraction Based on Moving Least-Squares 基于移动最小二乘特征提取的点云配准
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492867
K. Guo, Hu Ye, Jianglong Zhou, Baogang Geng, Xiaolong Wu, Yunfei Li
In reverse engineering such as surface reconstruction, to solve the registration of point clouds of laser radar problem, a method based on moving least-squares was conducted to make feature extraction of target ball and then established linear equations to calculate the coordinate of the ball's center based on characteristic curves. Lastly, registration of point clouds was conducted based on four coordinates of the balls' centers. Experimental result shows that the method can improve the computing precision of the coordinate of the ball's center and the error of registration is in degree of millimeter based on moving least-squares. The accuracy is high and satisfies the engineering demand.
在曲面重建等逆向工程中,针对激光雷达点云配准问题,采用基于移动最小二乘的方法对目标球进行特征提取,然后根据特征曲线建立线性方程,计算出目标球的中心坐标。最后,根据球中心的四个坐标进行点云配准。实验结果表明,该方法可以提高球心坐标的计算精度,基于移动最小二乘的配准误差在毫米级。精度高,满足工程要求。
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引用次数: 1
Detection of Strawberry Flowers in Outdoor Field by Deep Neural Network 基于深度神经网络的室外草莓花检测
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492793
P. Lin, Yongming Chen
This paper proposed an accurate, fast and reliable strawberry flower detection system for the automated strawberry flower yield estimation and harvesting. A state-of-the-art deep-level object detection framework of region-based convolutional neural network (R-CNN) was developed for improving the accuracy of detecting strawberry flowers in outdoor field. The networks were trained on 400 strawberry flower images and tested on 100 strawberry flower images. To capture features on multiple scales, three different region-based object detection methods including R-CNN, Fast R-CNN and Faster R-CNN were presented to represent the strawberry flower instances. The detection rate for R-CNN, Fast R-CNN and Faster R-CNN models were 63.4%, 76.7% and 86.1 %, respectively. Experimental results showed that the Faster R-CNN method archives better performance than R-CNN and Fast R-CNN and is less time consuming. We demonstrated the performance of the Faster RCNN framework even if strawberry flower are occluded by foliage, under shadow, or if there is some degree of overlap among strawberry flowers. Moreover, automatic yield estimation provides a viable solution for the current manual counting for yield estimation of fruits or flowers by workers which is very time consuming and expensive and also not practical for big fields.
本文提出了一种准确、快速、可靠的草莓花检测系统,用于草莓花的自动化产量估算和收获。为提高室外草莓花的检测精度,提出了一种基于区域卷积神经网络(R-CNN)的深层目标检测框架。这些网络在400张草莓花图像上进行了训练,并在100张草莓花图像上进行了测试。为了捕获多尺度特征,提出了三种不同的基于区域的目标检测方法(R-CNN、Fast R-CNN和Faster R-CNN)来表示草莓花实例。R-CNN、Fast R-CNN和Faster R-CNN模型的检出率分别为63.4%、76.7%和86.1%。实验结果表明,Faster R-CNN方法的性能优于R-CNN和Fast R-CNN方法,且耗时更少。我们展示了更快的RCNN框架的性能,即使草莓花被树叶遮挡,在阴影下,或者草莓花之间有一定程度的重叠。此外,自动产量估算为目前人工估算水果或花卉产量提供了一种可行的解决方案,这种方法耗时长,成本高,而且不适合大面积种植。
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引用次数: 19
A Dynamic Target Visual Positioning Method Based on ROI 基于ROI的动态目标视觉定位方法
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492832
Anran Wang, X. Hao, Xu Zhang, Ancheng Wang, Peng Hu
The method of visual positioning can be mainly divided into fixed camera system and mobile camera system. In this paper, we propose a dynamic target positioning method based on ROI (regions of interest), which utilizes the deep learning method to detect targets and employs the fixed camera system to locate the targets. The ROI method proposed only process the region of target, which can reduce the time-consuming, and it can solve the problem that none or less feature points of the target is detected in 3D reconstruction. We make a dataset of the experimental car and use YOLOv2 to train the dataset, by which the training model of the experimental car is obtained; then the trained model is used to detect the experimental car in the video data which acquired by two USB cameras and get the ROI of the moving target. According to the triangulation method, only the ROI of the image data at the same time is reconstructed, and the average of the obtained coordinates as the position of the car at that moment. In the experiment, we use the positions obtained by optitrack system as the true values, and compare the positions got by the method of this paper (ROI method) with the true value. The experimental results show that the ROI method proposed can be used to locate the dynamic target with the positioning accuracy at the cm level.
视觉定位的方法主要分为固定摄像机系统和移动摄像机系统。本文提出了一种基于感兴趣区域(ROI)的动态目标定位方法,利用深度学习方法检测目标,利用固定摄像机系统定位目标。所提出的ROI方法仅对目标区域进行处理,减少了耗时,解决了三维重建中目标特征点缺失或缺失的问题。制作实验车的数据集,使用YOLOv2对数据集进行训练,得到实验车的训练模型;然后利用训练好的模型在两个USB摄像头采集的视频数据中检测实验车,得到运动目标的ROI。根据三角剖分方法,只对同一时刻图像数据的ROI进行重构,并将得到的坐标的平均值作为汽车在该时刻的位置。在实验中,我们使用optitrack系统得到的位置作为真值,并将本文方法(ROI法)得到的位置与真值进行比较。实验结果表明,所提出的ROI方法可用于动态目标的定位,定位精度达到厘米级。
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引用次数: 3
Planar Shoeprint Segmentation Based on the Multiplicative Intrinsic Component Optimization 基于乘法内禀分量优化的平面鞋印分割
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492844
Tianli Guo, Yunqi Tang, Wei Guo
Shoeprint is an important trace evidence in forensic science. It can provide information about age, height and sex of suspects. In order to solve the problem of individual differences in the identification of planar-shoeprint experts doing, a planar shoeprint image segmentation algorithm based on Multiplicative Intrinsic Component Optimization is proposed in this context. After segmentation, pseudo-color can be selectively used to process the segmentation image. So the pattern and wear area of sole were automatically sketched. Experimental analysis shows that this method can effectively segment the shoeprint. This provides an objective and universal shoeprint identification method for criminal investigators to narrow the scope of investigation.
鞋印是法医学中重要的痕迹证据。它可以提供嫌疑人的年龄、身高和性别等信息。为了解决平面鞋印专家在进行识别时存在的个体差异问题,提出了一种基于乘法内禀分量优化的平面鞋印图像分割算法。分割后,可以选择性地使用伪颜色对分割图像进行处理。从而自动绘制出鞋底图案和磨损区域。实验分析表明,该方法可以有效地分割鞋印。这为刑事侦查人员缩小侦查范围提供了一种客观、通用的鞋印鉴定方法。
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引用次数: 2
Adaptive Extraction of Fused Feature for Panoramic Visual Tracking 全景视觉跟踪融合特征的自适应提取
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492737
Long Liu, Danyang Jing, Jie Ding
Panoramic visual tracking is very useful for numerous applications. However, distorted imaging of panoramic vision is prone to affect robustness and lose the target. A panoramic visual tracking method based on adaptive feature fusion is proposed in this paper. Size variation of the target trapezoid box during target movement is labelled. The linear model describing parameter variation of the trapezoid box is fitted. The target trapezoid region is extracted by the model and then refined through the affine transformation. Based on the particle filtering-based tracking framework, the fusion of color and shape is used as the main feature for target tracking. Particle weight is computed using the Bayesian fusion and recursion formula. Experimental results demonstrate the great superiority of the proposed algorithm over other methods in terms of tracking accuracy and anti-occlusion performance, showing that the proposed algorithm can considerably improve target tracking robustness of panoramic vision.
全景视觉跟踪在许多应用中非常有用。然而,全景视觉的畸变成像容易影响鲁棒性,导致目标丢失。提出了一种基于自适应特征融合的全景视觉跟踪方法。标记目标运动过程中目标梯形框的大小变化。拟合了描述梯形箱参数变化的线性模型。该模型首先提取目标梯形区域,然后通过仿射变换进行细化。在基于粒子滤波的目标跟踪框架中,利用颜色和形状的融合作为目标跟踪的主要特征。采用贝叶斯融合递推公式计算粒子权重。实验结果表明,该算法在跟踪精度和抗遮挡性能上均优于其他方法,可以显著提高全景视觉的目标跟踪鲁棒性。
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引用次数: 2
Crack Detection and Images Inpainting Method for Thai Mural Painting Images 泰国壁画图像的裂纹检测与图像修复方法
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492735
Salinee Jaidilert, Ghulam Farooque
Thailand frescoes are an important art heritage in the world. However, the erosion of history has resulted in the color loss, stain and scratches of many mural paintings. How to repair the Thailand murals has become an urgent problem. It is an important scientific problem to use computer image inpainting technology to simulate and eliminate the missing pixels in the murals and obtain beautiful and intact murals. In this paper, a computer aided semi-automatic repair framework is proposed by combining a scratch detection procedure and a model optimization based inpainting procedure. To this end, we propose a scratch semi-automatic detection method. In this method, a small number of seed points are given by users, and the location of scratches is then computed by region growing method and morphological operation. After that, the pixel filling and color restoration in the missing region can be obtained by using different variational inpainting methods. The experiment shows that the proposed method is effective.
泰国壁画是世界上重要的艺术遗产。然而,历史的侵蚀导致了许多壁画的褪色,污渍和划痕。如何修复泰国壁画已成为一个亟待解决的问题。如何利用计算机图像绘画技术对壁画中缺失的像素点进行模拟和消除,获得美观完整的壁画是一个重要的科学问题。本文提出了一种将划痕检测过程与基于模型优化的喷漆过程相结合的计算机辅助半自动修复框架。为此,我们提出了一种划痕半自动检测方法。该方法由用户给出少量的种子点,然后通过区域生长法和形态学运算计算出划痕的位置。然后利用不同的变分插值方法对缺失区域进行像素填充和颜色恢复。实验表明,该方法是有效的。
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引用次数: 9
An Object Tracking Method by Concatenating Structural SVM and Correlation Filter 基于结构支持向量机和相关滤波的目标跟踪方法
Pub Date : 2018-06-01 DOI: 10.1109/ICIVC.2018.8492753
Nianhao Xie, Y. Shang
Structural SVM trackers and correlation filter trackers have demonstrated dominant performance in recent object tracking benchmarks. However, structural SVM trackers naturally suffer from shortage of samples and low speed, and time-consuming adaption is need to relieve the correlation filter trackers from boundary effects. Thus, we design a jointed tracker by concatenating a high-speed SSVM method-DSLT and a multi feature CF method-STAPLE to realize advantage complementation. We show that the tracking precision and robustness can be improve by a large margin comparing to either single tracker with little sacrifice of speed.
结构支持向量机跟踪器和相关滤波器跟踪器在最近的目标跟踪基准测试中表现出了主导性能。然而,结构支持向量机跟踪器存在样本数量不足、速度慢的缺点,并且为了消除相关滤波跟踪器的边界效应,需要进行耗时的自适应。因此,我们设计了一种连接高速SSVM方法- dslt和多特征CF方法- staple的联合跟踪器,实现优势互补。我们表明,与任何单一跟踪器相比,在几乎不牺牲速度的情况下,跟踪精度和鲁棒性都可以得到很大的提高。
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引用次数: 1
期刊
2018 IEEE 3rd International Conference on Image, Vision and Computing (ICIVC)
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