为了进一步提升红外与可见光图像融合方法的性能,本文提出了一种基于多尺度局部极值分解与深度学习网络ResNet152的红外与可见光图像融合方法。首先,利用多尺度局部极值分解(multiscale local extrema decomposition,MLED)方法将源图像...为了进一步提升红外与可见光图像融合方法的性能,本文提出了一种基于多尺度局部极值分解与深度学习网络ResNet152的红外与可见光图像融合方法。首先,利用多尺度局部极值分解(multiscale local extrema decomposition,MLED)方法将源图像分解为近似图像和细节图像,分离出源图像中重叠的重要特征信息。然后采用残差网络ResNet152深度提取源图像的多维显著特征,以l_(1)-范数作为活性测度生成显著特征图,对近似图像进行加权平均融合,以保持能量和残留细节信息不丢失。在细节图像中,利用“系数绝对值取大”规则获得初始决策图,源图像作为引导图像,初始决策图作为输入图像进行引导滤波处理,得到优化决策图,计算加权局部能量得到能量显著图,对细节图像进行加权平均融合,使融合图像具有丰富的纹理细节和良好的视觉边缘感知。最后,对近似融合图像和细节融合图像进行重构,得到融合图像。实验结果表明,与现有的典型融合方法相比,本文所提出的融合方法在客观评价和视觉感受方面都取得了最好的效果。展开更多
Object representation based on local features is a topical subject in the domain of image understanding and computer vision. We discuss the defects of global features in present methods and the advantages of local fea...Object representation based on local features is a topical subject in the domain of image understanding and computer vision. We discuss the defects of global features in present methods and the advantages of local features in object recognition, and briefly explore state-of-the-art recognition methods using local features, especially the main approaches of local feature extraction and object representation. To clearly explain these methods, the problem of local feature extraction is divided into feature region detection, feature region description, and feature space optimization. The main components and merits of these steps are presented. Technologies for object presentation are classified into three types: vector space, sliding window, and structure relationship models. Future development trends are discussed briefly.展开更多
In thefield of diagnosis of medical images the challenge lies in tracking and identifying the defective cells and the extent of the defective region within the complex structure of a brain cavity.Locating the defective...In thefield of diagnosis of medical images the challenge lies in tracking and identifying the defective cells and the extent of the defective region within the complex structure of a brain cavity.Locating the defective cells precisely during the diagnosis phase helps tofight the greatest exterminator of mankind.Early detec-tion of these defective cells requires an accurate computer-aided diagnostic system(CAD)that supports early treatment and promotes survival rates of patients.An ear-lier version of CAD systems relies greatly on the expertise of radiologist and it con-sumed more time to identify the defective region.The manuscript takes the efficacy of coalescing features like intensity,shape,and texture of the magnetic resonance image(MRI).In the Enhanced Feature Fusion Segmentation based classification method(EEFS)the image is enhanced and segmented to extract the prominent fea-tures.To bring out the desired effect the EEFS method uses Enhanced Local Binary Pattern(EnLBP),Partisan Gray Level Co-occurrence Matrix Histogram of Oriented Gradients(PGLCMHOG),and iGrab cut method to segment image.These prominent features along with deep features are coalesced to provide a single-dimensional fea-ture vector that is effectively used for prediction.The coalesced vector is used with the existing classifiers to compare the results of these classifiers with that of the gen-erated vector.The generated vector provides promising results with commendably less computatio nal time for pre-processing and classification of MR medical images.展开更多
文摘为了进一步提升红外与可见光图像融合方法的性能,本文提出了一种基于多尺度局部极值分解与深度学习网络ResNet152的红外与可见光图像融合方法。首先,利用多尺度局部极值分解(multiscale local extrema decomposition,MLED)方法将源图像分解为近似图像和细节图像,分离出源图像中重叠的重要特征信息。然后采用残差网络ResNet152深度提取源图像的多维显著特征,以l_(1)-范数作为活性测度生成显著特征图,对近似图像进行加权平均融合,以保持能量和残留细节信息不丢失。在细节图像中,利用“系数绝对值取大”规则获得初始决策图,源图像作为引导图像,初始决策图作为输入图像进行引导滤波处理,得到优化决策图,计算加权局部能量得到能量显著图,对细节图像进行加权平均融合,使融合图像具有丰富的纹理细节和良好的视觉边缘感知。最后,对近似融合图像和细节融合图像进行重构,得到融合图像。实验结果表明,与现有的典型融合方法相比,本文所提出的融合方法在客观评价和视觉感受方面都取得了最好的效果。
基金supported by the National Basic Research Program (973) of China (No. 2012CB821206)the National Natural Science Foundation of China (No. 71201004)+1 种基金the Scientific Research Common Program of Beijing Municipal Commission of Education (No. KM201310011009)the Funding Project for Innovation on Science, Technology and Graduate Education in Institutions of Higher Learning under the Jurisdiction of Beijing Municipality (Nos. PXM2012_014213_000037 and PXM2012_014213_000079)
文摘Object representation based on local features is a topical subject in the domain of image understanding and computer vision. We discuss the defects of global features in present methods and the advantages of local features in object recognition, and briefly explore state-of-the-art recognition methods using local features, especially the main approaches of local feature extraction and object representation. To clearly explain these methods, the problem of local feature extraction is divided into feature region detection, feature region description, and feature space optimization. The main components and merits of these steps are presented. Technologies for object presentation are classified into three types: vector space, sliding window, and structure relationship models. Future development trends are discussed briefly.
文摘In thefield of diagnosis of medical images the challenge lies in tracking and identifying the defective cells and the extent of the defective region within the complex structure of a brain cavity.Locating the defective cells precisely during the diagnosis phase helps tofight the greatest exterminator of mankind.Early detec-tion of these defective cells requires an accurate computer-aided diagnostic system(CAD)that supports early treatment and promotes survival rates of patients.An ear-lier version of CAD systems relies greatly on the expertise of radiologist and it con-sumed more time to identify the defective region.The manuscript takes the efficacy of coalescing features like intensity,shape,and texture of the magnetic resonance image(MRI).In the Enhanced Feature Fusion Segmentation based classification method(EEFS)the image is enhanced and segmented to extract the prominent fea-tures.To bring out the desired effect the EEFS method uses Enhanced Local Binary Pattern(EnLBP),Partisan Gray Level Co-occurrence Matrix Histogram of Oriented Gradients(PGLCMHOG),and iGrab cut method to segment image.These prominent features along with deep features are coalesced to provide a single-dimensional fea-ture vector that is effectively used for prediction.The coalesced vector is used with the existing classifiers to compare the results of these classifiers with that of the gen-erated vector.The generated vector provides promising results with commendably less computatio nal time for pre-processing and classification of MR medical images.
