The video inpainting process helps in several video editing and restoration processes like unwanted object removal,scratch or damage rebuilding,and retargeting.It intends to fill spatio-temporal holes with reasonable ...The video inpainting process helps in several video editing and restoration processes like unwanted object removal,scratch or damage rebuilding,and retargeting.It intends to fill spatio-temporal holes with reasonable content in the video.Inspite of the recent advancements of deep learning for image inpainting,it is challenging to outspread the techniques into the videos owing to the extra time dimensions.In this view,this paper presents an efficient video inpainting approach using beetle antenna search with deep belief network(VIA-BASDBN).The proposed VIA-BASDBN technique initially converts the videos into a set of frames and they are again split into a region of 5*5 blocks.In addition,the VIABASDBN technique involves the design of optimal DBN model,which receives input features from Local Binary Patterns(LBP)to categorize the blocks into smooth or structured regions.Furthermore,the weight vectors of the DBN model are optimally chosen by the use of BAS technique.Finally,the inpainting of the smooth and structured regions takes place using the mean and patch matching approaches respectively.The patch matching process depends upon the minimal Euclidean distance among the extracted SIFT features of the actual and references patches.In order to examine the effective outcome of the VIA-BASDBN technique,a series of simulations take place and the results denoted the promising performance.展开更多
The depth information of the scene indicates the distance between the object and the camera,and depth extraction is a key technology in 3D video system.The emergence of Kinect makes the high resolution depth map captu...The depth information of the scene indicates the distance between the object and the camera,and depth extraction is a key technology in 3D video system.The emergence of Kinect makes the high resolution depth map capturing possible.However,the depth map captured by Kinect can not be directly used due to the existing holes and noises,which needs to be repaired.We propose a texture combined inpainting algorithm in this paper.Firstly,the foreground is segmented combined with the color characteristics of the texture image to repair the foreground of the depth map.Secondly,region growing is used to determine the match region of the hole in the depth map,and to accurately position the match region according to the texture information.Then the match region is weighted to fill the hole.Finally,a Gaussian filter is used to remove the noise in the depth map.Experimental results show that the proposed method can effectively repair the holes existing in the original depth map and get an accurate and smooth depth map,which can be used to render a virtual image with good quality.展开更多
In this paper, we propose a new algorithm for temporally consistent depth map estimation to generate three-dimensional video. The proposed algorithm adaptively computes the matching cost using a temporal weighting fun...In this paper, we propose a new algorithm for temporally consistent depth map estimation to generate three-dimensional video. The proposed algorithm adaptively computes the matching cost using a temporal weighting function, which is obtained by block-based moving object detection and motion estimation with variable block sizes. Experimental results show that the proposed algorithm improves the temporal consistency of the depth video and reduces by about 38% both the flickering artefact in the synthesized view and the number of coding bits for depth video coding.展开更多
Inpainting is the process of reconstructing damaged regions of images and video frames.This study deals with weaknesses of the current video inpainting techniques,when an object is totally damaged,and a framework for ...Inpainting is the process of reconstructing damaged regions of images and video frames.This study deals with weaknesses of the current video inpainting techniques,when an object is totally damaged,and a framework for video inpainting is proposed.Using this framework,the moving object is separated from the background.A large mosaic image is constructed using the moving object and then a patch-based method with large patches is used to fill holes.In each frame,the inpainted foreground is obtained by placing the object in its location.Missing areas of the stationary background are also filled separately and the final video is produced by composing the inpainted background and object frames.Results for three video sequences with an occluded object show that this approach represents the object in the missing region better than other approaches.展开更多
以老电影视频为研究对象,针对序列中存在的多种损伤类别,提出一种基于分组鲁棒主成分分析(robust principal component analysis,RPCA)的统一修复方法.采用镜头分割和去闪烁实现对视频序列的预处理.在多分辨率金字塔框架下,采用时空域...以老电影视频为研究对象,针对序列中存在的多种损伤类别,提出一种基于分组鲁棒主成分分析(robust principal component analysis,RPCA)的统一修复方法.采用镜头分割和去闪烁实现对视频序列的预处理.在多分辨率金字塔框架下,采用时空域分组的方式在最粗糙层构造观测矩阵,依次执行基于交替线性法的RPCA变换后,根据帧间误差信息得到大面积破损位置;利用上采样方式构造初步修复结果序列、破损掩模序列以及最近邻偏移矩阵集合,继而对原始序列进行修改,重复时空域分组RPCA变换,实现对老电影视频序列的修复.实验结果证明,该方法能够同时修复画面中的不同损伤,并取得良好的效果.展开更多
文摘The video inpainting process helps in several video editing and restoration processes like unwanted object removal,scratch or damage rebuilding,and retargeting.It intends to fill spatio-temporal holes with reasonable content in the video.Inspite of the recent advancements of deep learning for image inpainting,it is challenging to outspread the techniques into the videos owing to the extra time dimensions.In this view,this paper presents an efficient video inpainting approach using beetle antenna search with deep belief network(VIA-BASDBN).The proposed VIA-BASDBN technique initially converts the videos into a set of frames and they are again split into a region of 5*5 blocks.In addition,the VIABASDBN technique involves the design of optimal DBN model,which receives input features from Local Binary Patterns(LBP)to categorize the blocks into smooth or structured regions.Furthermore,the weight vectors of the DBN model are optimally chosen by the use of BAS technique.Finally,the inpainting of the smooth and structured regions takes place using the mean and patch matching approaches respectively.The patch matching process depends upon the minimal Euclidean distance among the extracted SIFT features of the actual and references patches.In order to examine the effective outcome of the VIA-BASDBN technique,a series of simulations take place and the results denoted the promising performance.
基金Supported by the Key Project of National Natural Science Foundation of China(Nos.60832003 and 61172096)major Project of Shanghai Science and Technology Committee(No.10510500500)the Major Innovation Project of Shanghai Municipal Education Commission
文摘The depth information of the scene indicates the distance between the object and the camera,and depth extraction is a key technology in 3D video system.The emergence of Kinect makes the high resolution depth map capturing possible.However,the depth map captured by Kinect can not be directly used due to the existing holes and noises,which needs to be repaired.We propose a texture combined inpainting algorithm in this paper.Firstly,the foreground is segmented combined with the color characteristics of the texture image to repair the foreground of the depth map.Secondly,region growing is used to determine the match region of the hole in the depth map,and to accurately position the match region according to the texture information.Then the match region is weighted to fill the hole.Finally,a Gaussian filter is used to remove the noise in the depth map.Experimental results show that the proposed method can effectively repair the holes existing in the original depth map and get an accurate and smooth depth map,which can be used to render a virtual image with good quality.
基金supported by the National Research Foundation of Korea Grant funded by the Korea Ministry of Science and Technology under Grant No. 2012-0009228
文摘In this paper, we propose a new algorithm for temporally consistent depth map estimation to generate three-dimensional video. The proposed algorithm adaptively computes the matching cost using a temporal weighting function, which is obtained by block-based moving object detection and motion estimation with variable block sizes. Experimental results show that the proposed algorithm improves the temporal consistency of the depth video and reduces by about 38% both the flickering artefact in the synthesized view and the number of coding bits for depth video coding.
文摘Inpainting is the process of reconstructing damaged regions of images and video frames.This study deals with weaknesses of the current video inpainting techniques,when an object is totally damaged,and a framework for video inpainting is proposed.Using this framework,the moving object is separated from the background.A large mosaic image is constructed using the moving object and then a patch-based method with large patches is used to fill holes.In each frame,the inpainted foreground is obtained by placing the object in its location.Missing areas of the stationary background are also filled separately and the final video is produced by composing the inpainted background and object frames.Results for three video sequences with an occluded object show that this approach represents the object in the missing region better than other approaches.
文摘以老电影视频为研究对象,针对序列中存在的多种损伤类别,提出一种基于分组鲁棒主成分分析(robust principal component analysis,RPCA)的统一修复方法.采用镜头分割和去闪烁实现对视频序列的预处理.在多分辨率金字塔框架下,采用时空域分组的方式在最粗糙层构造观测矩阵,依次执行基于交替线性法的RPCA变换后,根据帧间误差信息得到大面积破损位置;利用上采样方式构造初步修复结果序列、破损掩模序列以及最近邻偏移矩阵集合,继而对原始序列进行修改,重复时空域分组RPCA变换,实现对老电影视频序列的修复.实验结果证明,该方法能够同时修复画面中的不同损伤,并取得良好的效果.