共查询到20条相似文献,搜索用时 0 毫秒
1.
2.
Mavra Mehmood Ember Ayub Fahad Ahmad Madallah Alruwaili Ziyad A. Alrowaili Saad Alanazi Mamoona Humayun Muhammad Rizwan Shahid Naseem Tahir Alyas 《计算机、材料和连续体(英文)》2021,67(1):641-657
Clinical image processing plays a significant role in healthcare systems and is currently a widely used methodology. In carcinogenic diseases, time is crucial; thus, an image’s accurate analysis can help treat disease at an early stage. Ductal carcinoma in situ (DCIS) and lobular carcinoma in situ (LCIS) are common types of malignancies that affect both women and men. The number of cases of DCIS and LCIS has increased every year since 2002, while it still takes a considerable amount of time to recommend a controlling technique. Image processing is a powerful technique to analyze preprocessed images to retrieve useful information by using some remarkable processing operations. In this paper, we used a dataset from the Mammographic Image Analysis Society and MATLAB 2019b software from MathWorks to simulate and extract our results. In this proposed study, mammograms are primarily used to diagnose, more precisely, the breast’s tumor component. The detection of DCIS and LCIS on breast mammograms is done by preprocessing the images using contrast-limited adaptive histogram equalization. The resulting images’ tumor portions are then isolated by a segmentation process, such as threshold detection. Furthermore, morphological operations, such as erosion and dilation, are applied to the images, then a gray-level co-occurrence matrix texture features, Harlick texture features, and shape features are extracted from the regions of interest. For classification purposes, a support vector machine (SVM) classifier is used to categorize normal and abnormal patterns. Finally, the adaptive neuro-fuzzy inference system is deployed for the amputation of fuzziness due to overlapping features of patterns within the images, and the exact categorization of prior patterns is gained through the SVM. Early detection of DCIS and LCIS can save lives and help physicians and surgeons todiagnose and treat these diseases. Substantial results are obtained through cubic support vector machine (CSVM), respectively, showing 98.95% and 98.01% accuracies for normal and abnormal mammograms. Through ANFIS, promising results of mean square error (MSE) 0.01866, 0.18397, and 0.19640 for DCIS and LCIS differentiation during the training, testing, and checking phases. 相似文献
3.
4.
5.
6.
7.
Fangming Bi Xuanyi Fu Wei Chen Weidong Fang Xuzhi Miao Biruk Assefa 《计算机、材料和连续体(英文)》2020,62(1):199-216
Aiming at the defects of the traditional fire detection methods, which arecaused by false positives and false negatives in large space buildings, a fire identificationdetection method based on video images is proposed. The algorithm first uses the hybridGaussian background modeling method and the RGB color model to perform fireprejudgment on the video image, which can eliminate most non-fire interferences.Secondly, the traditional regional growth algorithm is improved and the fire imagesegmentation effect is effectively improved. Then, based on the segmented image, thedynamic and static features of the fire flame are further analyzed and extracted in the areaof the suspected fire flame. Finally, the dynamic features of the extracted fire flameimages were fused and classified by improved fruit fly optimization support vectormachine, and the recognition results were obtained. The video-based fire detectionmethod proposed in this paper greatly improves the accuracy of fire detection and issuitable for fire detection and identification in large space scenarios. 相似文献
8.
9.
支持向量机(SVM)是一种对小样本决策具有良好学习性能的机器学习方法。常规SVM算法是从二类分类问题推导得出的,针对于故障诊断这种典型的多类决策问题,研究了一种网格式支持向量机多类算法,每个类别和其他2至4个类别之间采用常规SVM二值分类器进行分类,所需二值分类器总数少,可扩展性强。把转轴上不同位置的裂纹当作不同的故障,运用网格式支持向量机进行转轴裂纹位置故障诊断,结果表明该算法具有计算量小、诊断速度快、故障识别率高、容易扩展等优点,适合于较大规模的多类别故障诊断应用。 相似文献
10.
卫星遥感图像中类圆形油库的自动识别方法 总被引:7,自引:1,他引:7
油库是典型军事目标之一,对其识别是卫星图像判读的一项重要内容,传统的方法是通过判读员进行人工判读,工作量非常大是其缺点之一。为了克服这一缺点,本文提出了一种类圆形油库的自动识别方法。首先利用Kapur熵法对图像进行阈值分割,得到二值图像:然后对二值图像中的白像素进行最近邻聚类形成团块,并计算其面积以及体态比和矩形度等形状参数;最后利用油库近似圆形和成群分布的特点对油库群进行识别和定位。实验结果表明该方法对于高分辨率卫星遥感图像中的类圆形油库的识别是很有效的。 相似文献
11.
一种适合于多目标检测的图像分割方法 总被引:14,自引:2,他引:14
提出一种适合于多目标检测的8邻域图像分割方法,用以获取目标特征量,准确分割图像。在对二值化图像扫描形成目标块的过程中,标记各个目标像素,记录目标的边界点,得出分割目标的面积、周长、质心坐标。利用这些信息,可以选择跟踪一个或多个目标。仿真结果证明了该方法实用可行。 相似文献
12.
基于多超平面支持向量机的图像语义分类算法 总被引:1,自引:0,他引:1
由于图像的低层可视特征与高层语义内容之间存在巨大的语义鸿沟,而基于内容的图像分类和检索准确性极大依赖低层可视特征的描述,本文提出了一种基于多超平面支持向量机的图像语义分类方法.多超平面分类器从优化问题的复杂度和运行泛化能力两方面进行研究,是最优分离超平面分类器一种显而易见的扩展.实验结果表明,本文提出的方法在图像语义分类的准确性方面要优于诸如采用色彩特征和纹理特征的支持向量机分类器的其它方法. 相似文献
13.
文章讨论了在DCT域中进行红外视频图像预处理的可能性,并提出了一种基于DCT域的压缩视频预处理算法.该算法通过DCT域低通滤波、系数变换和对比度拉伸实现了红外图像的增强处理.仿真结果表明,提出的算法克服了对视频压缩、解压再处理的弊端,提高了系统的整体性能和响应速度,改善了视频图像的视觉效果. 相似文献
14.
Syed Muhammad Saqlain Shah Tahir Afzal Malik Robina khatoon Syed Saqlain Hassan Faiz Ali Shah 《计算机、材料和连续体(英文)》2019,61(2):535-553
Classification of human actions under video surveillance is gaining a lot of attention from computer vision researchers. In this paper, we have presented methodology to recognize human behavior in thin crowd which may be very helpful in surveillance. Research have mostly focused the problem of human detection in thin crowd, overall behavior of the crowd and actions of individuals in video sequences. Vision based Human behavior modeling is a complex task as it involves human detection, tracking, classifying normal and abnormal behavior. The proposed methodology takes input video and applies Gaussian based segmentation technique followed by post processing through presenting hole filling algorithm i.e., fill hole inside objects algorithm. Human detection is performed by presenting human detection algorithm and then geometrical features from human skeleton are extracted using feature extraction algorithm. The classification task is achieved using binary and multi class support vector machines. The proposed technique is validated through accuracy, precision, recall and F-measure metrics. 相似文献
15.
16.
针对复杂颜色和纹理特征条件下,多晶硅电池片上的色差检测问题,提出了一种基于支持向量机分类策略的多晶硅电池片色差检测方法。首先对预处理后电池片图像进行颜色模型转换和通道分离,利用Otsu方法对单通道图像进行阈值分割处理,并计算各阈值图像的区域对比度,然后根据区域对比度情况选择合适的阈值图像,利用阈值图像所提供的信息提取图像特征;最后使用支持向量机分类器来判别电池片是否存在色差缺陷。实验结果表明提出的色差检测算法可以实现多晶硅电池片色差高效检测,色差缺陷检测的准确度、误检率和检测时间分别达到96.88%, 5%和109ms。 相似文献
17.
A new method for real-time edge enhancement is presented. The method is based on the capacity of liquid-crystal displays to generate a contrast-reverted replica of the image displayed on it. When the negative replica is defocused and it is superposed to the original image (displayed in a second liquid-crystal display), one obtains an image with enhanced second derivatives. The proposed technique resembles the classical (photographic) unsharp masking method, but unlike the time-consuming photographic implementation, it can be applied in real-time. The proposed method is potentially interesting for image processing in areas such as microscopy, industrial edge inspection, etc. Validation experiments are presented. 相似文献
18.
Mourtada Benazzouz Ismahan Baghli Med Amine Chikh 《International journal of imaging systems and technology》2013,23(1):22-28
Pathological image analysis plays a significant role in effective disease diagnostics. In this article, a tool for diagnosis assistance by automatic segmentation of bone marrow images is introduced. The aim of our segmentation is to demarcate cell's component: nucleus, cytoplasm, red cells, and background. Different color spaces were used to extract color's features to profit of their complementarity. We introduce several dimensionality reduction techniques. These techniques are exemplified on a support vector machine pixel‐based bone marrow image segmentation problem in which it is shown that it may give significant improvement in segmentation accuracy and time consuming. © 2013 Wiley Periodicals, Inc. Int J Imaging Syst Technol, 23, 22–28, 2013 相似文献
19.
针对早期火灾信息特点,提出了一种基于二叉树的最小二乘小波支持向量机(Least squareswavelet support vector machine,LS-WSVM)多类分类方法.该方法首先把主成份分析用于早期火灾信息的特征提取.然后,把二叉树结构和LS-WSVM相结合,提出了基于二叉树的LS-WSVM多类分类模型,不仅避免了盲目分类和不可分情况,而且提高了分类速度和泛化能力.最后,用该模型对特征信息进行处理,从而实现了对早期火灾的多类识别.早期火灾分类实验结果表明,该方法比采用径向基核函数的最小二乘支持向量机多类分类方法具有更好的识别效果和更快的分类速度. 相似文献
20.
利用粗糙集理论进行图像增强,子图的划分是关键。属性直方图是对直方图概念的推广,是一种由先验知识约束的直方图;将它用于子图的划分,在此基础上提出了一种基于粗糙集理论和属性直方图的图像增强方法。该方法利用属性直方图的 Otsu 算法确定灰度阈值,根据灰度阈值利用不可分辨关系,将图像划分为背景子图、目标子图和噪声子图,对去噪后背景子图和目标子图进行增强变换,并将它们合并得到增强图像。将该方法用于一种海底小目标图像增强。实验结果表明该方法处理增益为 11dB,明显地增强了图像,且不损害图像的边缘。该方法适用于图像有某种先验知识的场合。 相似文献