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1. 发明申请

US20100157340A1 OBJECT EXTRACTION IN COLOUR COMPOUND DOCUMENTS 有权
标题翻译：彩色复合文件中的对象提取
公开(公告)号：US20100157340A1
公开(公告)日：2010-06-24
申请号：US12637446
申请日：2009-12-14
申请人： Yu-Ling Chen , Ping Liu , Trevor Lee McDonell
发明人： Yu-Ling Chen , Ping Liu , Trevor Lee McDonell
IPC分类号： G06F15/00 , G06K9/00
CPC分类号： G06K9/00456 , G06K9/325 , G06K2209/01
摘要： Disclosed is a computer implemented method of text extraction in colour compound documents. The method connects similarly coloured pixels of an image of a colour compound document into connected components (CCs); classifies each CC as either text or non-text; refines the text CC classification for each text CC using global colour context statistics; groups text CCs into text blocks; recovers misclassified non-text CCs into a nearby text block; and removes extraneous CCs from each text block using local colour context statistics to thereby provide the extracted text in the text blocks. Also disclosed is a computer implemented method of locating graphics objects in a colour compound document image. The method connects similarly coloured pixels of said image into connected components (CCs) and placing the CCs in an enclosure tree; classifies (330,730) each CC into one of a plurality of classes wherein at least one class (862) represents salient graphics components; identifies (1140) a graphics container (441) to perform semantic analysis for each CC of said class representing salient graphics components; profiles (1170) descendents of said graphics container in said tree to obtain semantic context statistics; and decides (1710) whether the graphics container contains a whole or part of a graphics object based on said semantic context statistics.
摘要翻译：公开了彩色复合文件中文本提取的计算机实现方法。该方法将彩色复合文件的图像的相似颜色的像素连接到连接的分量（CC）中; 将每个CC分类为文本或非文本; 使用全球颜色上下文统计，为每个文本CC优化文本CC分类; 将文本CC组合成文本块; 将错误分类的非文本CC恢复到附近的文本块中; 并使用本地颜色上下文统计从每个文本块中移除无关CC，从而在文本块中提供所提取的文本。还公开了一种在彩色复合文件图像中定位图形对象的计算机实现方法。该方法将所述图像的类似颜色的像素连接到连接的组件（CC）中并将CC放置在外壳树中; 将每个CC分类（330,730）到多个类中的一个，其中至少一个类（862）表示突出的图形分量; 识别（1140）图形容器（441），以对表示突出图形组件的所述类的每个CC执行语义分析; （1170）所述图形容器的后代，以获得语义上下文统计; 并且基于所述语义上下文统计来决定（1710）图形容器是否包含图形对象的全部或一部分。

2. 发明授权

US08351691B2 Object extraction in colour compound documents 有权
标题翻译：彩色复合文件中的对象提取
公开(公告)号：US08351691B2
公开(公告)日：2013-01-08
申请号：US12637446
申请日：2009-12-14
申请人： Yu-Ling Chen , Ping Liu , Trevor Lee McDonell
发明人： Yu-Ling Chen , Ping Liu , Trevor Lee McDonell
IPC分类号： G06K9/00
CPC分类号： G06K9/00456 , G06K9/325 , G06K2209/01
摘要： A method of text extraction in color compound documents is described. The method connects similarly colored pixels of an image of a color compound document into connected components (CCs); classifies each CC as either text or non-text; refines the text CC classification for each text CC using global color context statistics; groups text CCs into text blocks; recovers misclassified non-text CCs into a nearby text block; and removes extraneous CCs from each text block using local color context statistics to thereby provide the extracted text in the text blocks. Also described is a method of locating graphics objects in a color compound document image.
摘要翻译：描述了彩色复合文件中文本提取的方法。该方法将彩色复合文件的图像的相似颜色的像素连接到连接的分量（CC）中; 将每个CC分类为文本或非文本; 使用全球颜色上下文统计，为每个文本CC优化文本CC分类; 将文本CC组合成文本块; 将错误分类的非文本CC恢复到附近的文本块中; 并使用本地颜色上下文统计从每个文本块中移除无关CC，从而在文本块中提供所提取的文本。还描述了在彩色复合文档图像中定位图形对象的方法。

3. 发明授权

US08644602B2 Colour correcting foreground colours for visual quality improvement 有权
标题翻译：颜色校正前景色，提高视觉质量
公开(公告)号：US08644602B2
公开(公告)日：2014-02-04
申请号：US12726665
申请日：2010-03-18
申请人： Yu-Ling Chen , Trevor Lee McDonell
发明人： Yu-Ling Chen , Trevor Lee McDonell
IPC分类号： G06K9/00
CPC分类号： H04N1/58 , H04N1/62
摘要： A method (199) is disclosed for modifying colors of text extracted from an image of a document page to improve visual quality. The document image comprises text and image regions of various colors. The method divides (100) the document image into a plurality of connected components, the connected components comprising pixels of similar color that are closely spatially located, and selects from the image a plurality of the connected components that represent text. The plurality of text connected components are grouped to form a logical structure grouping of said page comprising one or more text blocks wherein each said text block represents a text line or paragraph. One or more logically consistent color sets are then formed (120, 699, 399, 499) for each text block based on the colors of the connected components in the text block. The logically consistent color sets represent all text of visually similar color of the corresponding text line or paragraph. The method then applies color enhancement (130) to the logically consistent color sets to enhance visual quality and correct image defects in the document image.
摘要翻译：公开了一种用于修改从文档页面的图像提取的文本的颜色以提高视觉质量的方法（199）。文档图像包括各种颜色的文本和图像区域。该方法将文档图像（100）划分为多个连接的组件，所连接的组件包括密切位置的相似颜色的像素，并且从图像中选择表示文本的多个连接的组件。多个文本连接的组件被分组以形成包括一个或多个文本块的所述页面的逻辑结构分组，其中每个所述文本块表示文本行或段落。然后基于文本块中连接的组件的颜色，为每个文本块形成一个或多个逻辑一致的颜色集（120,699,399,499）。逻辑一致的颜色集表示相应文本行或段落的视觉相似颜色的所有文本。然后，该方法将颜色增强（130）应用于逻辑一致的颜色集合，以增强视觉质量并校正文档图像中的图像缺陷。

4. 发明申请

US20100246951A1 COLOUR CORRECTING FOREGROUND COLOURS FOR VISUAL QUALITY IMPROVEMENT 有权
标题翻译：颜色校正前视色彩，用于视觉质量改进
公开(公告)号：US20100246951A1
公开(公告)日：2010-09-30
申请号：US12726665
申请日：2010-03-18
申请人： Yu-Ling Chen , Trevor Lee McDonell
发明人： Yu-Ling Chen , Trevor Lee McDonell
IPC分类号： G06K9/00
CPC分类号： H04N1/58 , H04N1/62
摘要： A method (199) is disclosed for modifying colours of text extracted from an image of a document page to improve visual quality. The document image comprises text and image regions of various colours. The method divides (100) the document image into a plurality of connected components, the connected components comprising pixels of similar colour that are closely spatially located, and selects from the image a plurality of the connected components that represent text. The plurality of text connected components are grouped to form a logical structure grouping of said page comprising one or more text blocks wherein each said text block represents a text line or paragraph. One or more logically consistent colour sets are then formed (120, 699, 399, 499) for each text block based on the colours of the connected components in the text block. The logically consistent colour sets represent all text of visually similar colour of the corresponding text line or paragraph. The method then applies colour enhancement (130) to the logically consistent colour sets to enhance visual quality and correct image defects in the document image.
摘要翻译：公开了一种用于修改从文档页面的图像提取的文本的颜色以提高视觉质量的方法（199）。文档图像包括各种颜色的文本和图像区域。该方法将文档图像（100）划分为多个连接的组件，所连接的组件包括密切位置的相似颜色的像素，并且从图像中选择表示文本的多个连接的组件。多个文本连接的组件被分组以形成包括一个或多个文本块的所述页面的逻辑结构分组，其中每个所述文本块表示文本行或段落。然后基于文本块中连接的组件的颜色，为每个文本块形成一个或多个逻辑一致的颜色集（120,699,399,499）。逻辑一致的颜色集表示相应文本行或段落的视觉相似颜色的所有文本。然后，该方法将颜色增强（130）应用于逻辑一致的颜色集合，以增强视觉质量并校正文档图像中的图像缺陷。

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