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公开(公告)号：US08385643B2
公开(公告)日：2013-02-26
申请号：US12353440
申请日：2009-01-14
申请人： Jilin Li , Zhi-Gang Fan , Yadong Wu , Bo Wu , Ning Le
发明人： Jilin Li , Zhi-Gang Fan , Yadong Wu , Bo Wu , Ning Le
CPC分类号： G06K9/00463 , G06K9/00456 , G06K9/38 , G06K9/4647 , G06K2209/01
摘要： A preprocessing section binarizes input image data and calculates a total black pixel ratio. A feature extracting section detects connected components included in the binary image data and detects circumscribing bounding boxes of the connected components. Predetermined connected components are removed from all of the connected components based on the sizes of the detected circumscribing bounding boxes and bounding box black pixel ratios. By using the connected components that remain after removing the unnecessary connected components, a histogram is generated by specifying the sizes of the circumscribing bounding boxes as classes and numbers of the connected components as the frequencies of occurrence. A determining section determines whether the input image data is document image data or non-document image data based on information related to the generated histogram and the total black pixel ratio.
摘要翻译： 预处理部分对输入图像数据进行二值化并计算总黑色像素比。 特征提取部分检测二进制图像数据中包括的连接分量并检测连接分量的外接边界框。 基于检测到的外接边界框和边框黑色像素比的尺寸，将所有连接的组件从所有连接的组件中移除。 通过使用除去不必要的连接部件后剩余的连接部件，通过将外接边界框的尺寸指定为连接部件的类别和编号作为发生频率来生成直方图。 确定部分基于与所生成的直方图和总黑色像素比相关的信息来确定输入图像数据是文档图像数据还是非文档图像数据。
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2.发明授权Image determination apparatus, image search apparatus and computer readable recording medium storing an image search program 有权图像确定装置，图像搜索装置和存储图像搜索程序的计算机可读记录介质公开(公告)号：US08200012B2
公开(公告)日：2012-06-12
申请号：US12393772
申请日：2009-02-26
申请人： Jilin Li , Zhi-Gang Fan , Yadong Wu , Bo Wu
发明人： Jilin Li , Zhi-Gang Fan , Yadong Wu , Bo Wu
IPC分类号： G06K9/34
摘要： A preprocessing section binarizes input image data and calculates a total black pixel ratio. A feature extracting section detects connected components contained in the binarized image data and detects circumscribing bounding boxes that circumscribe these connected components, respectively. Based on sizes of the circumscribing bounding boxes detected and numbers of black pixels contained therein, predetermined connected components are removed. A determining section generates an edge map by using the residual connected components, and performs two-dimensional fast Fourier transform thereon to generate spectral data. The determining section performs two-dimensional fast Fourier transform on template images to generate spectral data. The determining section determines, based on these pieces of spectral data, whether or not a circular shape is contained in the input image data.
摘要翻译： 预处理部分对输入图像数据进行二值化并计算总黑色像素比。 特征提取部分检测二值化图像数据中包含的连接分量并检测分别围绕这些连接分量的外接边界框。 基于检测到的外接边界框的大小和包含在其中的黑色像素的数量，去除了预定的连接部件。 确定部通过使用剩余连接分量来生成边缘图，并对其进行二维快速傅立叶变换以产生光谱数据。 确定部分对模板图像执行二维快速傅立叶变换以产生光谱数据。 确定部分基于这些光谱数据确定输入图像数据中是否包含圆形形状。
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3.发明申请IMAGE DETERMINATION APPARATUS, IMAGE SEARCH APPARATUS AND COMPUTER READABLE RECORDING MEDIUM STORING AN IMAGE SEARCH PROGRAM 有权图像确定装置，图像搜索装置和计算机可读记录媒体存储图像搜索程序公开(公告)号：US20090263025A1
公开(公告)日：2009-10-22
申请号：US12393772
申请日：2009-02-26
申请人： Jilin LI , Zhi-Gang Fan , Yadong Wu , Bo Wu
发明人： Jilin LI , Zhi-Gang Fan , Yadong Wu , Bo Wu
IPC分类号： G06K9/46
摘要： A preprocessing section binarizes input image data and calculates a total black pixel ratio. A feature extracting section detects connected components contained in the binarized image data and detects circumscribing bounding boxes that circumscribe these connected components, respectively. Based on sizes of the circumscribing bounding boxes detected and numbers of black pixels contained therein, predetermined connected components are removed. A determining section generates an edge map by using the residual connected components, and performs two-dimensional fast Fourier transform thereon to generate spectral data. The determining section performs two-dimensional fast Fourier transform on template images to generate spectral data. The determining section determines, based on these pieces of spectral data, whether or not a circular shape is contained in the input image data.
摘要翻译： 预处理部分对输入图像数据进行二值化并计算总黑色像素比。 特征提取部分检测二值化图像数据中包含的连接分量并检测分别围绕这些连接分量的外接边界框。 基于检测到的外接边界框的大小和包含在其中的黑色像素的数量，去除了预定的连接部件。 确定部通过使用剩余连接分量来生成边缘图，并对其进行二维快速傅立叶变换以产生光谱数据。 确定部分对模板图像执行二维快速傅立叶变换以产生光谱数据。 确定部分基于这些光谱数据确定输入图像数据中是否包含圆形形状。
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4.发明申请IMAGE DETERMINATION APPARATUS, IMAGE SEARCH APPARATUS AND A RECORDING MEDIUM ON WHICH AN IMAGE SEARCH PROGRAM IS RECORDED 有权图像确定装置，图像搜索装置和记录图像搜索程序的记录介质公开(公告)号：US20090245640A1
公开(公告)日：2009-10-01
申请号：US12353440
申请日：2009-01-14
申请人： Jilin Li , Zhi-Gang Fan , Yadong Wu , Bo Wu , Ning Le
发明人： Jilin Li , Zhi-Gang Fan , Yadong Wu , Bo Wu , Ning Le
IPC分类号： G06K9/34
CPC分类号： G06K9/00463 , G06K9/00456 , G06K9/38 , G06K9/4647 , G06K2209/01
摘要： A preprocessing section binarizes input image data and calculates a total black pixel ratio. A feature extracting section detects connected components included in the binary image data and detects circumscribing bounding boxes of the connected components. Predetermined connected components are removed from all of the connected components based on the sizes of the detected circumscribing bounding boxes and bounding box black pixel ratios. By using the connected components that remain after removing the unnecessary connected components, a histogram is generated by specifying the sizes of the circumscribing bounding boxes as classes and numbers of the connected components as the frequencies of occurrence. A determining section determines whether the input image data is document image data or non-document image data based on information related to the generated histogram and the total black pixel ratio.
摘要翻译： 预处理部分对输入图像数据进行二值化并计算总黑色像素比。 特征提取部分检测二进制图像数据中包括的连接分量并检测连接分量的外接边界框。 基于检测到的外接边界框和边框黑色像素比的尺寸，将所有连接的组件从所有连接的组件中移除。 通过使用除去不必要的连接部件后剩余的连接部件，通过将外接边界框的尺寸指定为连接部件的类别和编号作为发生频率来生成直方图。 确定部分基于与所生成的直方图和总黑色像素比相关的信息来确定输入图像数据是文档图像数据还是非文档图像数据。
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