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1. 发明授权

US07634150B2 Removing ringing and blocking artifacts from JPEG compressed document images 失效
公开(公告)号：US07634150B2
公开(公告)日：2009-12-15
申请号：US12463768
申请日：2009-05-11
申请人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
发明人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
IPC分类号： G06K9/40
CPC分类号： H04N19/86
摘要： A method of removing ringing and blocking artifacts from a decompressed digital image. In one method, a background value of the digital image a background region and foreground regions is determined, and a threshold value is computed. A mapping of the digital image is then generated by thresholding the digital image based on the threshold value to produce a thresholded image, and enlarging the foreground regions of the thresholded image to form a map image. The mapping includes the background pixels of the map image. The background region of the decompressed digital image is then cleansed based on the mapping. In an alternate method, ringing artifacts are removed from a decompressed digital image based on a signal-to-noise ratio of the image. In yet another alternate embodiment, ringing artifacts are from a decompressed digital color image that includes a chrominance channel and a luminance channel. An alternate embodiment removes ringing and blocking artifacts.

2. 发明授权

US07532767B2 Removing ringing and blocking artifacts from JPEG compressed document images 失效
标题翻译：从JPEG压缩文档图像中删除振铃和块状伪影
公开(公告)号：US07532767B2
公开(公告)日：2009-05-12
申请号：US11443830
申请日：2006-05-31
申请人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
发明人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
IPC分类号： G06K9/40
CPC分类号： H04N19/86
摘要： A method of removing ringing and blocking artifacts from a decompressed digital image. In one method, a background value of the digital image a background region and foreground regions is determined, and a threshold value is computed. A mapping of the digital image is then generated by thresholding the digital image based on the threshold value to produce a thresholded image, and enlarging the foreground regions of the thresholded image to form a map image. The mapping includes the background pixels of the map image. The background region of the decompressed digital image is then cleansed based on the mapping. In an alternate method, ringing artifacts are removed from a decompressed digital image based on a signal-to-noise ratio of the image. In yet another alternate embodiment, ringing artifacts are from a decompressed digital color image that includes a chrominance channel and a luminance channel. An alternate embodiment removes ringing and blocking artifacts.
摘要翻译：从解压缩的数字图像中去除振铃和阻塞伪影的方法。在一种方法中，确定数字图像的背景区域和前景区域的背景值，并且计算阈值。然后通过基于阈值阈值化数字图像来产生数字图像的映射，以产生阈值图像，并且放大阈值图像的前景区域以形成地图图像。该映射包括地图图像的背景像素。然后基于映射清理解压缩的数字图像的背景区域。在替代方法中，基于图像的信噪比，从解压缩的数字图像中去除振铃伪像。在又一替代实施例中，振铃伪影来自包括色度通道和亮度通道的解压缩数字彩色图像。替代实施例消除振铃和阻塞伪影。

3. 发明申请

US20090214113A1 Removing Ringing and Blocking Artifacts from JPEG Compressed Document Images 失效
标题翻译：从JPEG压缩文档图像中删除振铃和阻塞人工制品
公开(公告)号：US20090214113A1
公开(公告)日：2009-08-27
申请号：US12463768
申请日：2009-05-11
申请人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
发明人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
IPC分类号： G06K9/00 , G06K9/40 , G06K9/36
CPC分类号： H04N19/86
摘要： A method of removing ringing and blocking artifacts from a decompressed digital image. In one method, a background value of the digital image a background region and foreground regions is determined, and a threshold value is computed. A mapping of the digital image is then generated by thresholding the digital image based on the threshold value to produce a thresholded image, and enlarging the foreground regions of the thresholded image to form a map image. The mapping includes the background pixels of the map image. The background region of the decompressed digital image is then cleansed based on the mapping. In an alternate method, ringing artifacts are removed from a decompressed digital image based on a signal-to-noise ratio of the image. In yet another alternate embodiment, ringing artifacts are from a decompressed digital color image that includes a chrominance channel and a luminance channel. An alternate embodiment removes ringing and blocking artifacts.
摘要翻译：从解压缩的数字图像中去除振铃和阻塞伪影的方法。在一种方法中，确定数字图像的背景区域和前景区域的背景值，并且计算阈值。然后通过基于阈值阈值化数字图像来产生数字图像的映射，以产生阈值图像，并且放大阈值图像的前景区域以形成地图图像。该映射包括地图图像的背景像素。然后基于映射清理解压缩的数字图像的背景区域。在替代方法中，基于图像的信噪比，从解压缩的数字图像中去除振铃伪像。在又一替代实施例中，振铃伪影来自包括色度通道和亮度通道的解压缩数字彩色图像。替代实施例消除振铃和阻塞伪影。

4. 发明申请

US20070280551A1 Removing ringing and blocking artifacts from JPEG compressed document images 失效
标题翻译：从JPEG压缩文档图像中删除振铃和块状伪影
公开(公告)号：US20070280551A1
公开(公告)日：2007-12-06
申请号：US11443830
申请日：2006-05-31
申请人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
发明人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
IPC分类号： G06K9/40 , G06K9/44
CPC分类号： H04N19/86
摘要： A method of removing ringing and blocking artifacts from a decompressed digital image. In one method, a background value of the digital image a background region and foreground regions is determined, and a threshold value is computed. A mapping of the digital image is then generated by thresholding the digital image based on the threshold value to produce a thresholded image, and enlarging the foreground regions of the thresholded image to form a map image. The mapping includes the background pixels of the map image. The background region of the decompressed digital image is then cleansed based on the mapping. In an alternate method, ringing artifacts are removed from a decompressed digital image based on a signal-to-noise ratio of the image. In yet another alternate embodiment, ringing artifacts are from a decompressed digital color image that includes a chrominance channel and a luminance channel. An alternate embodiment removes ringing and blocking artifacts.
摘要翻译：从解压缩的数字图像中去除振铃和阻塞伪影的方法。在一种方法中，确定数字图像的背景区域和前景区域的背景值，并且计算阈值。然后通过基于阈值阈值化数字图像来产生数字图像的映射，以产生阈值图像，并且放大阈值图像的前景区域以形成地图图像。该映射包括地图图像的背景像素。然后基于映射清理解压缩的数字图像的背景区域。在替代方法中，基于图像的信噪比，从解压缩的数字图像中去除振铃伪像。在又一替代实施例中，振铃伪影来自包括色度通道和亮度通道的解压缩数字彩色图像。替代实施例消除振铃和阻塞伪影。

5. 发明申请

US20120039534A1 COMPRESSION SCHEME SELECTION BASED ON IMAGE DATA TYPE AND USER SELECTIONS 有权
标题翻译：基于图像数据类型和用户选择的压缩方案选择
公开(公告)号：US20120039534A1
公开(公告)日：2012-02-16
申请号：US12853831
申请日：2010-08-10
申请人： Amal Z. Malik , Clara Cuciurean-Zapan , Xing Li
发明人： Amal Z. Malik , Clara Cuciurean-Zapan , Xing Li
IPC分类号： G06K9/36 , G06K9/34
CPC分类号： H04N1/3333 , H03M7/3064 , H03M7/607 , H03M7/6082 , H04N2201/33357
摘要： Disclosed is a processor-implemented method for processing image data comprising a plurality of pixels and system for performing the method. The method includes the following acts: determining at least one type of data represented by the plurality of pixels, determining, for each type of data, a number of pixels from the image data representing that type of data in the image data, and determining a compression scheme for compressing the image data based on a relative or absolute amount of each type of data in accordance with a predetermined scheme. The type of data may be determined by received input (e.g., user selected type and compression quality) or by analyzing its pixels and comparing it to thresholds. Basing the compression technique on the data type allows for better selection of a compression technique (e.g., MRC or JPEG), and thus greater image quality, compression ratios, and file size.
摘要翻译：公开了一种用于处理包括多个像素的图像数据的处理器实现的方法和用于执行该方法的系统。该方法包括以下动作：确定由多个像素表示的至少一种类型的数据，对于每种类型的数据，从表示图像数据中的该类型的数据的图像数据中确定一数量的像素，并且确定压缩方案，用于根据预定方案基于每种类型的数据的相对或绝对量压缩图像数据。数据的类型可以由接收的输入（例如，用户选择的类型和压缩质量）或通过分析其像素并将其与阈值进行比较来确定。基于数据类型的压缩技术可以更好地选择压缩技术（例如，MRC或JPEG），从而更好地选择图像质量，压缩比和文件大小。

6. 发明授权

US08224073B2 System and method for efficient storage of MRC images for easy classification and retrieval 有权
标题翻译： MRC图像有效存储的系统和方法，便于分类和检索
公开(公告)号：US08224073B2
公开(公告)日：2012-07-17
申请号：US12511564
申请日：2009-07-29
申请人： Robert Eero Nuuja , Francis Kapo Tse , Amal Z. Malik
发明人： Robert Eero Nuuja , Francis Kapo Tse , Amal Z. Malik
IPC分类号： G06K9/34
CPC分类号： H04N1/40062 , G06T7/11 , G06T7/194 , G06T2207/10008 , G06T2207/10024 , G06T2207/30176 , H04N1/41
摘要： A method and system for processing image data provides associated background metadata in a searchable format and reduces file size. MRC techniques are used to process input image data. It is known that the image data may be segmented to generate a background layer representing background attributes of the input image data. A background color value of the background layer is detected, and background metadata representing the color value is generated. The background metadata is associated with the image data (e.g., as a separate file, in the image header, etc.), thereby making the background metadata searchable and reducing the file size of the image data to be stored.
摘要翻译：用于处理图像数据的方法和系统以可搜索的格式提供相关联的背景元数据并且减小文件大小。 MRC技术用于处理输入图像数据。已知图像数据可以被分割以生成表示输入图像数据的背景属性的背景层。检测背景层的背景颜色值，并生成表示颜色值的背景元数据。背景元数据与图像数据相关联（例如，作为单独的文件，在图像头中等），从而使后台元数据可搜索，并减少要存储的图像数据的文件大小。

7. 发明申请

US20110085735A1 EDGE DETECTION FOR MIXED RASTER CONTENT (MRC) IMAGES FOR IMPROVED COMPRESSION AND IMAGE QUALITY 有权
标题翻译：用于改进压缩和图像质量的混合雷射内容（MRC）图像的边缘检测
公开(公告)号：US20110085735A1
公开(公告)日：2011-04-14
申请号：US12576754
申请日：2009-10-09
申请人： Amal Z. Malik
发明人： Amal Z. Malik
IPC分类号： G06K9/48 , G06K9/62
CPC分类号： G06K9/48 , G06T7/12 , G06T7/136
摘要： A method for detecting edge pixels in an image plane based on intensity and neutrality of a current pixel is provided. The method includes detecting the edge pixels in the image plane based on predetermined criteria. The predetermined criteria determining whether: (a) a difference between the maximum value and the minimum value of the specified characteristic is greater than or equal to a predetermined threshold; and (b) (i) a difference between a current value and the minimum value of the specified characteristic, or (ii) a difference between a current value and the maximum value of the specified characteristic is greater than or equal to a predetermined threshold. The predetermined thresholds are determined based on intensity and neutrality of the current pixel.
摘要翻译：提供了一种基于当前像素的强度和中性来检测图像平面中的边缘像素的方法。该方法包括基于预定标准检测图像平面中的边缘像素。所述预定标准确定：（a）特定特性的最大值和最小值之间的差是否大于或等于预定阈值; 和（b）（i）当前值与特定特性的最小值之间的差，或（ii）当前值与特定特性的最大值之间的差大于或等于预定阈值。基于当前像素的强度和中性度来确定预定阈值。

8. 发明授权

US08345998B2 Compression scheme selection based on image data type and user selections 有权
标题翻译：基于图像数据类型和用户选择的压缩方案选择
公开(公告)号：US08345998B2
公开(公告)日：2013-01-01
申请号：US12853831
申请日：2010-08-10
申请人： Amal Z. Malik , Clara Cuciurean-Zapan , Xing Li
发明人： Amal Z. Malik , Clara Cuciurean-Zapan , Xing Li
IPC分类号： G06K9/36 , G06K9/34
CPC分类号： H04N1/3333 , H03M7/3064 , H03M7/607 , H03M7/6082 , H04N2201/33357
摘要： Disclosed is a processor-implemented method for processing image data comprising a plurality of pixels and system for performing the method. The method includes the following acts: determining at least one type of data represented by the plurality of pixels, determining, for each type of data, a number of pixels from the image data representing that type of data in the image data, and determining a compression scheme for compressing the image data based on a relative or absolute amount of each type of data in accordance with a predetermined scheme. The type of data may be determined by received input (e.g., user selected type and compression quality) or by analyzing its pixels and comparing it to thresholds. Basing the compression technique on the data type allows for better selection of a compression technique (e.g., MRC or JPEG), and thus greater image quality, compression ratios, and file size.
摘要翻译：公开了一种用于处理包括多个像素的图像数据的处理器实现的方法和用于执行该方法的系统。该方法包括以下动作：确定由多个像素表示的至少一种类型的数据，对于每种类型的数据，从表示图像数据中的该类型的数据的图像数据中确定一数量的像素，并且确定压缩方案，用于根据预定方案基于每种类型的数据的相对或绝对量压缩图像数据。数据的类型可以由接收的输入（例如，用户选择的类型和压缩质量）或通过分析其像素并将其与阈值进行比较来确定。基于数据类型的压缩技术可以更好地选择压缩技术（例如，MRC或JPEG），从而更好地选择图像质量，压缩比和文件大小。

9. 发明授权

US08335379B2 System and method for cleanup of MRC images for improved compression and image quality 有权
标题翻译：用于清理MRC图像的系统和方法，以提高压缩和图像质量
公开(公告)号：US08335379B2
公开(公告)日：2012-12-18
申请号：US12647838
申请日：2009-12-28
申请人： Amal Z. Malik
发明人： Amal Z. Malik
IPC分类号： G06K9/34
CPC分类号： H04N19/59 , G06T7/11 , G06T2207/30176 , H04N19/20
摘要： A method, system, and product for separating an image into a set of layers (background, foreground, and selector) and processing those layers to produce an output image of reduced size with improved compression and greater image quality. Each pixel of image data is processed based on signals produced from the set of layers and their attributes. The method includes determining values for signals being processed based on a look-up table or template, as well as changing values based on each pixel and its neighboring pixels.
摘要翻译：一种用于将图像分离成一组图层（背景，前景和选择器）的方法，系统和产品，并且通过改进的压缩和更大的图像质量来处理这些图层以产生尺寸减小的输出图像。基于从该层集合及其属性产生的信号来处理图像数据的每个像素。该方法包括基于查找表或模板确定正在处理的信号的值，以及基于每个像素及其相邻像素来改变值。

10. 发明授权

US07755800B2 Estimating an amount of color content in a document 有权
标题翻译：估计文档中的颜色内容量
公开(公告)号：US07755800B2
公开(公告)日：2010-07-13
申请号：US12025991
申请日：2008-02-05
申请人： Amal Z. Malik , Xing Li
发明人： Amal Z. Malik , Xing Li
IPC分类号： G06F15/00 , H04N1/46
CPC分类号： H04N1/50 , G06Q30/04
摘要： What is provided herein is a novel system and method for estimating the amount of color in a document to be printed, with the capability to handle composite black, in those environments without access to all the original four color planes simultaneously. In one embodiment, input CMYK values are pre-adjusted via a look-up table to take into account the neutral balance characteristics. The planes are then scaled and quantized so that all four planes become available simultaneously. The difference among the quantized CMYK color values is compared against a threshold that is input level dependent. A pixel is classified into one of several color categories such as, for example, true neutral, fuzzy neutral, true color or fuzzy color. A color billing strategy can then be automatically determined based on the amount of color content. The method advantageously provides flexibility to support multi-tier billing in systems with various marking technologies.
摘要翻译：这里提供的是用于在没有同时访问所有原始四个色彩平面的环境中估计要打印的文档中的颜色量的新型系统和方法，具有处理复合黑色的能力。在一个实施例中，通过查找表预先调整输入CMYK值以考虑中性平衡特性。然后对平面进行缩放和量化，使得所有四个平面同时变得可用。将量化的CMYK颜色值之间的差异与输入级别相关的阈值进行比较。像素被分类为多个颜色类别之一，例如真实中性，模糊中性，真实颜色或模糊颜色。然后可以基于颜色内容的量自动确定颜色计费策略。该方法有利地提供了在具有各种标记技术的系统中支持多层计费的灵活性。

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