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2013 8th Iranian Conference on Machine Vision and Image Processing (MVIP)最新文献

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Brain blood vessel map extraction using wavelet-based DSA fusion 基于小波的DSA融合脑血管图提取
Pub Date : 2013-09-01 DOI: 10.1109/IRANIANMVIP.2013.6780021
Saba Momeni, H. Pourghassem
Recently image fusion has prominent and applicable roles in medical image processing. Digital subtraction angiography (DSA) image is applied to display map of blood vessels. In this paper, a new fusion algorithm for DSA serial images based on discrete wavelet transform coefficients is proposed. Our algorithm will be compared for different wavelet transforms and activity criteria for high frequency coefficients. The comparisons are based on the objective evaluation criteria which show measure of noise existence, sharpness and correlation between the fusion result and reference image. Finally, we specify which type of wavelet transform and activity criterion results more informative brain blood vessel map.
近年来,图像融合在医学图像处理中具有突出的应用作用。采用数字减影血管造影(DSA)图像显示血管图。提出了一种基于离散小波变换系数的DSA序列图像融合算法。我们的算法将比较不同的小波变换和高频系数的活动准则。这些比较是基于客观的评价标准来衡量融合结果与参考图像之间的噪声存在程度、清晰度和相关性。最后,我们明确了哪种类型的小波变换和活动准则能得到更丰富的脑血管图信息。
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引用次数: 1
Denoising by averaging reconstructed images: Using Singularity Function Analysis 利用奇异函数分析对重构图像进行平均去噪
Pub Date : 2013-09-01 DOI: 10.1109/IRANIANMVIP.2013.6779995
M. Shafiee, M. Karami, Kaveh Kangarloo
A newfound method of denoising that based on Averaging Reconstructed Image (AVREC), is used. The approach was proposed on signals, approximately about last decade, Since 2004. In definition (procedure), first of all, we divide the spectrum of noisy image into several images that can be then, reconstructed with 2-D Singularity Function Analysis (SFA) model. Among this mathematical model, each matrix or a discrete set of data, represents as a weighted sum of singularity functions. In image denoising field, this technique, rebuilt all lost high frequencies parameters that are essential. Illustrate each new image, as a sum of noise-free image and the small noise. So on, we can then, denoise image by averaging reconstructed ones. Both theoretical and experimental results on standard gray-scale images, confirm the advantages (benefits) of this approach as an applicable method of denoising.
提出了一种基于平均重构图像(AVREC)的去噪方法。该方法是在信号上提出的,大约在过去十年中,自2004年以来。在定义过程中,首先将噪声图像的频谱分割成若干图像,然后利用二维奇异函数分析(SFA)模型进行重构。在这个数学模型中,每个矩阵或一个离散的数据集,表示为奇异函数的加权和。在图像去噪领域,该技术重建了所有丢失的高频参数。说明每个新图像,作为无噪声图像和小噪声图像的总和。这样,我们就可以对重构后的图像进行平均去噪。在标准灰度图像上的理论和实验结果都证实了该方法作为一种适用的去噪方法的优点。
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引用次数: 1
Compressed sensing and multiple image fusion: An information theoretic approach 压缩感知与多图像融合:一种信息论方法
Pub Date : 2013-09-01 DOI: 10.1109/IRANIANMVIP.2013.6780007
Kamran Keykhosravi, S. Mashhadi
In this paper, we propose an information theoretic approach to fuse images compressed by compressed sensing (CS) techniques. The goal is to fuse multiple compressed images directly using measurements and reconstruct the final image only once. Since the reconstruction is the most expensive step, it would be a more economic method than separate reconstruction of each image. The proposed scheme is based on calculating the result using weighted average on the measurements of the inputs, where weights are calculated by information theoretic functions. The simulation results show that the final images produced by our method have higher quality than those produced by traditional methods, especially if the number of input images exceeds two.
在本文中,我们提出了一种信息理论方法来融合压缩感知(CS)技术压缩后的图像。目标是直接使用测量融合多个压缩图像,并仅重建最终图像一次。由于重建是最昂贵的步骤,这将是一个更经济的方法比单独重建每个图像。该方案基于对输入量的测量值进行加权平均计算的结果,其中权重由信息理论函数计算。仿真结果表明,该方法产生的最终图像质量优于传统方法,特别是当输入图像数量超过两个时。
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引用次数: 0
A new framework for goal detection based on semantic events detection in soccer video 基于语义事件检测的足球视频目标检测新框架
Pub Date : 2013-09-01 DOI: 10.1109/IRANIANMVIP.2013.6779975
Farshad Bayat, M. Moin, Farhad Bayat, M. Mokhtari
Soccer video processing and analysis to find critical events such as occurrences of goal event have been one of the important issues and topics of active researches in recent years. In this paper, a new role-based framework is proposed for goal event detection in which the semantic structure of soccer game is used. Usually after a goal scene, the audiences' and reporters' sound intensity is increased, ball is sent back to the center and the camera may: zoom on Player, show audiences' delighting, repeat the goal scene or display a combination of them. Thus, the occurrence of goal event will be detectable by analysis of sequences of above roles. The proposed framework in this paper consists of four main procedures: 1-detection of game's critical events by using audio channel, 2-detection of shot boundary and shots classification, 3-selection of candidate events according to the type of shot and existence of goalmouth in the shot, 4-detection of restarting the game from the center of the field. A new method for shot classification is also presented in this framework. Finally, by applying the proposed method it was shown that the goal events detection has a good accuracy and the percentage of detection failure is also very low.
对足球视频进行处理和分析,发现进球事件等关键事件,是近年来研究的热点问题之一。本文利用足球比赛的语义结构,提出了一种新的基于角色的目标事件检测框架。通常在一个进球场景后,观众和记者的声音强度会增加,球被送回中心,摄像机可以:变焦球员,显示观众的喜悦,重复进球场景或显示它们的组合。因此,通过分析上述角色的序列,可以检测目标事件的发生。本文提出的框架包括四个主要步骤:1 .利用音频通道检测比赛关键事件;2 .检测射门边界和射门分类;3 .根据射门类型和射门中是否存在球门选择候选事件;4 .检测从场地中心重新开始比赛。在此框架下提出了一种新的镜头分类方法。最后,应用该方法对目标事件进行了检测,结果表明,目标事件检测具有较好的准确率和较低的检测失败率。
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引用次数: 2
Evolutionary fractal image compression using asexual reproduction optimization with guided mutation 引导突变无性生殖优化的进化分形图像压缩
Pub Date : 2013-09-01 DOI: 10.1109/IRANIANMVIP.2013.6780022
S. Mahmoudi, Ebrahim Jelvehfard, M. Moin
There are many different methods for image compression which each of them satisfies a various type of purposes. Fractal Image Compression is a category of these techniques that has some specific features. This method is robust against aliasing of images in zooming, so it has multi-resolution capability. Besides, compression ratio of this method is reasonably competitive, also its decoding is fast. But the main issue of this method is the compression time which is very high because of complexity for finding self-similar blocks. So researchers have tried to mitigate computational costs with different approaches. In this paper, using an evolutionary algorithm called Asexual Reproduction Optimization (ARO) is proposed for fractal image compression. Then the main operator of this algorithm is tuned to make it more efficient versus other individual-based algorithms like Simulated Annealing (SA) and Tabu Search (TS). Finally experimental results and execution time of the proposed method, SA and full search are compared. ARO with guided mutation generates defensible outputs in very short time versus the others approaches.
有许多不同的图像压缩方法,其中每一种都满足不同类型的目的。分形图像压缩是这些技术的一个类别,具有一些特定的特征。该方法对放大过程中的图像混叠具有较强的鲁棒性,因此具有多分辨率的能力。此外,该方法的压缩比具有一定的竞争力,且解码速度快。但该方法的主要问题是压缩时间,由于查找自相似块的复杂性,压缩时间非常长。因此,研究人员试图用不同的方法来降低计算成本。本文提出了一种无性生殖优化(ARO)进化算法用于分形图像压缩。然后对该算法的主算子进行了调整,使其比其他基于个体的算法(如模拟退火(SA)和禁忌搜索(TS))更有效。最后,对所提方法、全搜索方法和SA方法的实验结果和执行时间进行了比较。与其他方法相比,具有引导突变的ARO方法在很短的时间内产生可防御的输出。
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引用次数: 2
Low complexity distributed video coding using compressed sensing 基于压缩感知的低复杂度分布式视频编码
Pub Date : 2013-09-01 DOI: 10.1109/IRANIANMVIP.2013.6779949
S. Roohi, M. Noorhosseini, J. Zamani, H. S. Rad
Compressive sensing (CS) is an efficient method to reconstruct sparse images with under-sampled data. In this method sensing and coding steps integrated to a one-step, low-complexity measurement acquisition system. In this paper, we use a Non-linear Conjugate Gradient (NLCG) algorithm to significantly increase the quality of reconstructed frames of video sequences. Our proposed framework divides sequence of a video to several groups of pictures (GOPs), where each GOP consisting of one key frame followed by two non-key frames. CS is then applied on each key and non-key frame with different sampling rates. For reconstruction final frames, NLCG algorithm was performed on each key frame with acceptable fidelity. To achieve desired quality on low-rate sampled non-key frames, NLCG modified using side information (SI) obtained from last two successive reconstructed key frames. Based on some performance measures such as SNR, PSNR, SSIM and RSE, our implementation results indicate that employing NLCG with Gaussian sampling matrix outperforms other methods in quality measures.
压缩感知(CS)是利用欠采样数据重构稀疏图像的有效方法。在这种方法中,传感和编码步骤集成到一个一步,低复杂度的测量采集系统。在本文中,我们使用非线性共轭梯度(NLCG)算法来显著提高视频序列重构帧的质量。我们提出的框架将视频序列划分为几组图片(GOPs),其中每个GOP由一个关键帧和两个非关键帧组成。然后以不同的采样率对每个关键帧和非关键帧应用CS。对于重建最终帧,对每个关键帧进行NLCG算法,保真度可接受。为了在低速率采样的非关键帧上达到理想的质量,NLCG使用从最后两个连续重构的关键帧中获得的侧信息(SI)进行修改。基于信噪比、PSNR、SSIM和RSE等性能指标,我们的实现结果表明,采用高斯采样矩阵的NLCG在质量指标上优于其他方法。
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引用次数: 7
Whale algorithm for image processing, a hardware implementation 鲸鱼算法用于图像处理,一个硬件实现
Pub Date : 2013-09-01 DOI: 10.1109/IRANIANMVIP.2013.6780010
M. Zakerhaghighi, H. Naji
The life of a kind of whale is very interesting and it is in some cases close to human life. One of the interesting and fascinating things about whales is the way they hunt. In this article, an algorithm is presented with the inspiration of the way these whales hunt. This algorithm has a wide range of applications, In order to show the capabilities of this algorithm, one of the image processing techniques is optimized and implemented using the algorithm mentioned above. We got excellent results in the execution speed and image quality. The algorithm is implemented on Spartan 3s400 FPGA.
一种鲸鱼的生活非常有趣,在某些情况下,它与人类的生活很接近。关于鲸鱼的有趣和迷人的事情之一是它们捕食的方式。在本文中,提出了一种算法,其灵感来自于这些鲸鱼的捕猎方式。该算法具有广泛的应用范围,为了显示该算法的能力,使用上述算法对其中一种图像处理技术进行了优化和实现。我们在执行速度和图像质量方面取得了优异的成绩。该算法在Spartan 3s400 FPGA上实现。
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引用次数: 2
Intelligent detection of the falls in the elderly using fuzzy inference system and video-based motion estimation method 基于模糊推理系统和基于视频的运动估计方法的老年人跌倒智能检测
Pub Date : 2013-09-01 DOI: 10.1109/IRANIANMVIP.2013.6779996
K. Rezaee, J. Haddadnia, A. Delbari
Automatic detection of the abnormal walking in people, especially such accidents as the falls in the elderly, based on image processing techniques and computer vision can help develop an efficient system that its implementation in various contexts enables us to monitor people's movements. This paper proposes a new algorithm, which drawing on fuzzy rules in classification of movements as well as the implementation of the motion estimation, allows the rapid processing of the input data. At the testing stage, 57425 video frames received from Mother Nursing Home in Farzanegan and the video sequences containing the falls of the elderly were used. The results show that the values of average accuracy (AAC), detection rate (DR) and false alarm rate (FAR) were at an acceptable level, respectively with 93%, 89% and 5%. Compared to the similar techniques, the implementation of the proposed system in nursing homes and residential areas allow the real time and intelligent monitoring of the people.
基于图像处理技术和计算机视觉的人类异常行走的自动检测,特别是老年人跌倒等事故,可以帮助开发一种高效的系统,它在各种情况下的实施使我们能够监控人们的运动。本文提出了一种利用模糊规则进行运动分类和运动估计的新算法,可以快速处理输入数据。在测试阶段,使用了从Farzanegan的母亲养老院收到的57425个视频帧,以及包含老年人跌倒的视频序列。结果表明,平均准确率(AAC)、检出率(DR)和虚警率(FAR)分别为93%、89%和5%,均处于可接受水平。与同类技术相比,所提出的系统在养老院和住宅区的实施可以实现对人们的实时智能监控。
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引用次数: 9
Ruling lines removal in handwritten documents 手写文件中裁断线的移除
Pub Date : 2013-09-01 DOI: 10.1109/IRANIANMVIP.2013.6779954
F. Alipour, K. Faez, Sahar Seifzadeh
In this paper, we present a method for removing ruling lines from handwritten documents, making no damage to the existing characters. It is argued that ruling lines have a predictable position in the page, but their thickness and the distance between them may differ from one document to another, which is estimated with simple algorithm. Another important challenge in this regard is detecting the edge of the line. In this paper the two columns that best represent edge of the main lines are considered. Compare to other methods, our method, which has been tested on six languages, that is English, French, German, Greek, Arabic and Persian, displays reduced time in the computation of rule-line removal and higher performance.
在本文中,我们提出了一种从手写文件中去除行距的方法,而不损害现有的字符。本文认为,标尺线在页面中的位置是可以预测的,但标尺线的厚度和间距可能因文档而异,这是用简单的算法估计出来的。在这方面的另一个重要挑战是检测线的边缘。本文考虑了最能代表主线边缘的两列。经过英语、法语、德语、希腊语、阿拉伯语和波斯语六种语言的测试,与其他方法相比,我们的方法在规则行去除的计算时间缩短,性能提高。
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引用次数: 2
Fast saliency map extraction from video: A hardware approach 从视频中快速提取显著性地图:一种硬件方法
Pub Date : 2013-09-01 DOI: 10.1109/IRANIANMVIP.2013.6779951
Amin Moradhasel, Babak Nadjar Araabi, S. M. Fakhraie, M. N. Ahmadabadi
Saliency map is a central part of many visual attention systems, particularly during learning and control of bottom-up attention. In this research we developed a hardware tool to extract saliency map from a video sequence. Saliency map is obtained by aggregating primary features of each frame, such as intensity, color, and lines orientation, along with temporal difference. The system is designed to provide both high speed and acceptable accuracy for real-time applications, such as machine vision and robotics. A versatile Verilog model for realization of the video processing system is developed, which can easily be mapped and synthesized on various FPGA or ASIC platforms. The proposed parallel hardware can process over 50 million pixels in a second, which is about 2x faster than the state-of-the-art designs. Experimental results on sample images justify the applicability and efficiency of the developed system in real-time applications.
显著性图是许多视觉注意系统的核心部分,特别是在自下而上的注意力学习和控制过程中。在这项研究中,我们开发了一个硬件工具,从视频序列中提取显著性地图。显著性图是通过对每帧图像的强度、颜色、线条方向等主要特征以及时间差异进行聚合得到的。该系统旨在为机器视觉和机器人等实时应用提供高速和可接受的精度。开发了一种实现视频处理系统的通用Verilog模型,该模型可以方便地在各种FPGA或ASIC平台上进行映射和合成。提议的并行硬件每秒可以处理超过5000万像素,这比最先进的设计快了大约2倍。样品图像的实验结果验证了系统在实时应用中的适用性和有效性。
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引用次数: 3
期刊
2013 8th Iranian Conference on Machine Vision and Image Processing (MVIP)
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