公开(公告)号：US08643905B1

公开(公告)日：2014-02-04

申请号：US13547875

申请日：2012-07-12

申请人： Amal Malik ,  Xing Li ,  Zhenhuan Wen

发明人： Amal Malik ,  Xing Li ,  Zhenhuan Wen

IPC分类号： H04N1/40 ,  G06T5/00

CPC分类号： G06K9/44 ,  G06K2209/01 ,  H04N1/40037 ,  H04N1/4092

摘要： The present disclosure relates to a method and system for processing isolated holes in an image to be printed or displayed. The method includes generating a random number lying in a finite range of numbers, determining whether a target pixel is to be turned off and enabled for printing as a hole, determining a sum of pixels surrounding a target pixel in a plurality of pixels in a scanline of the image, the target pixel corresponding to an isolated hole in an input image, that are in an on state, the on state defined by a higher binary logic level relative to a binary logic level corresponding to a turned off pixel, determining a numerical value stored in a lookup table in a memory unit coupled to the processor using the determined number of pixels that are in the turned on state surrounding the target pixel.

摘要翻译： 本公开涉及用于处理要打印或显示的图像中的隔离孔的方法和系统。 该方法包括生成位于有限数量范围内的随机数，确定目标像素是否被关闭并且能够打印为孔，确定扫描线中的多个像素中的目标像素周围的像素之和 的图像，对应于输入图像中的孤立孔的目标像素处于导通状态，由相对于对应于关闭像素的二进制逻辑电平的较高二进制逻辑电平定义的导通状态，确定数字 存储在与处理器耦合的存储器单元中的查找表中的值存储在目标像素周围处于导通状态的确定数量的像素。

公开(公告)号：US20140016146A1

公开(公告)日：2014-01-16

申请号：US13547875

申请日：2012-07-12

申请人： Amal MALIK ,  Xing Li ,  Zhenhuan Wen

发明人： Amal MALIK ,  Xing Li ,  Zhenhuan Wen

IPC分类号： G06F15/00

CPC分类号： G06K9/44 ,  G06K2209/01 ,  H04N1/40037 ,  H04N1/4092

摘要： The present disclosure relates to a method and system for processing isolated holes in an image to be printed or displayed. The method includes generating a random number lying in a finite range of numbers, determining whether a target pixel is to be turned off and enabled for printing as a hole, determining a sum of pixels surrounding a target pixel in a plurality of pixels in a scanline of the image, the target pixel corresponding to an isolated hole in an input image, that are in an on state, the on state defined by a higher binary logic level relative to a binary logic level corresponding to a turned off pixel, determining a numerical value stored in a lookup table in a memory unit coupled to the processor using the determined number of pixels that are in the turned on state surrounding the target pixel.

摘要翻译： 本公开涉及一种用于处理要打印或显示的图像中的隔离孔的方法和系统。 该方法包括生成位于有限数量范围内的随机数，确定目标像素是否被关闭并且能够打印为孔，确定扫描线中的多个像素中的目标像素周围的像素之和 的图像，对应于输入图像中的孤立孔的目标像素处于导通状态，由相对于对应于关闭像素的二进制逻辑电平的较高二进制逻辑电平定义的导通状态，确定数字 存储在与处理器耦合的存储器单元中的查找表中的值存储在目标像素周围处于导通状态的确定数量的像素。

公开(公告)号：US08842342B2

公开(公告)日：2014-09-23

申请号：US13547670

申请日：2012-07-12

申请人： Xing Li ,  Zhenhuan Wen ,  Amal Malik

发明人： Xing Li ,  Zhenhuan Wen ,  Amal Malik

IPC分类号： H04N1/40 ,  G06T5/00 ,  H04N1/46

CPC分类号： G06K9/44 ,  G06K9/00442 ,  G06K2209/01 ,  H04N1/40037 ,  H04N1/4092

摘要： A method for detecting and growing isolated holes in a document image having a plurality of pixels is provided. The method includes isolating the pixels of the image to form a plurality of windows, each window having a target pixel; identifying a hole growth factor to grow an isolated hole in the received image; using the hole growth factor to identify tiered pixel patterns from a plurality of predefined, tiered pixel patterns, wherein each of the tiered pixel patterns having a predetermined hole growth factor; comparing the pixels within each window to the pixel patterns within the identified tier to identify a match between the pixels within the window and at least one of the pixel patterns; and changing a pixel value of the target pixel, when a match is identified, to grow the isolated hole by the hole growth factor.

摘要翻译： 提供了一种用于在具有多个像素的文档图像中检测和增长隔离孔的方法。 该方法包括隔离图像的像素以形成多个窗口，每个窗口具有目标像素; 识别孔生长因子以在接收的图像中生长孤立的孔; 使用所述孔生长因子来从多个预定义的分层像素图案中识别分层像素图案，其中每个所述分层像素图案具有预定的孔生长因子; 将每个窗口内的像素与所识别的层中的像素图案进行比较，以识别窗口内的像素与至少一个像素图案之间的匹配; 以及当识别匹配时，改变目标像素的像素值，以通过所述孔生长因子来生长所述隔离孔。

公开(公告)号：US08665499B2

公开(公告)日：2014-03-04

申请号：US13547839

申请日：2012-07-12

申请人： Amal Malik ,  Zhenhuan Wen ,  Xing Li

发明人： Amal Malik ,  Zhenhuan Wen ,  Xing Li

IPC分类号： H04N1/407

CPC分类号： H04N1/4092 ,  G06K9/44 ,  G06K2209/01 ,  H04N1/40037

摘要： The present disclosure relates to a method and system for processing isolated holes in an image to be printed or displayed. The method includes detecting whether pixels corresponding to an isolated hole in the image are in an off state, determining a sum of pixels that are in an on state in a first pixel ring surrounding the pixels corresponding to the isolated hole when the one or more pixels in the isolated hole are detected to be in the off state, comparing the sum of pixels in the pixel ring that are in the on state with a threshold sum, turning off a number of pixels in at least another pixel ring either comprising of or surrounding the pixels when the first sum of pixels in the on state is greater than the threshold sum, and outputting the isolated hole including the turned off first number of pixels.

摘要翻译： 本公开涉及一种用于处理要打印或显示的图像中的隔离孔的方法和系统。 该方法包括检测对应于图像中的孤立孔的像素是否处于关闭状态，当一个或多个像素（像素）确定围绕与孤立孔对应的像素的第一像素环中的处于导通状态的像素的总和 在隔离孔中被检测为处于关闭状态，将处于导通状态的像素环中的像素的总和与阈值和进行比较，关闭至少另一像素环中的像素的数量，包括或围绕 当处于导通状态的第一个像素总和大于阈值和时的像素，并且输出包括关闭的第一数量的像素的隔离孔。

公开(公告)号：US08804200B2

公开(公告)日：2014-08-12

申请号：US13547738

申请日：2012-07-12

申请人： Xing Li ,  Zhenhuan Wen ,  Amal Malik

发明人： Xing Li ,  Zhenhuan Wen ,  Amal Malik

IPC分类号： H04N1/40 ,  G06T5/00 ,  H04N1/46

CPC分类号： H04N1/4092 ,  H04N1/405

摘要： A method for detecting and growing isolated dots in a document image having a plurality of pixels is provided. The method includes isolating the pixels of the image to form a plurality of windows, each window having a target pixel; detecting an isolated dot in the received image; identifying a dot growth factor to grow the detected isolated dot in the received image; using the dot growth factor to identify tiered pixel patterns from a plurality of predefined, tiered pixel patterns, wherein each of the tiered pixel patterns having a predetermined dot growth factor; comparing the pixels within each window to the pixel patterns within the identified tier to identify a match between the pixels within the window and at least one of the pixel patterns; and changing a pixel value of the target pixel, when a match is identified, to grow the isolated dot by the dot growth factor.

摘要翻译： 提供了一种用于在具有多个像素的文档图像中检测和增长孤立点的方法。 该方法包括隔离图像的像素以形成多个窗口，每个窗口具有目标像素; 检测接收到的图像中的孤立点; 识别点生长因子以增加接收到的图像中检测到的孤立点; 使用所述点生长因子来从多个预定义的分层像素图案中识别分层像素图案，其中每个所述分层像素图案具有预定的点生长因子; 将每个窗口内的像素与所识别的层中的像素图案进行比较，以识别窗口内的像素与至少一个像素图案之间的匹配; 并且当识别出匹配时，改变目标像素的像素值，以使点生长因子增加孤立点。

公开(公告)号：US08670157B2

公开(公告)日：2014-03-11

申请号：US13547765

申请日：2012-07-12

申请人： Amal Malik ,  Zhenhuan Wen ,  Xing Li

发明人： Amal Malik ,  Zhenhuan Wen ,  Xing Li

IPC分类号： G06K15/00

CPC分类号： G06K15/1871

摘要： The present disclosure relates to a method and system for processing isolated dots of an image to be printed by a printer. The method includes detecting whether pixels corresponding to an isolated dot in the image are in an on state. A first sum of pixels that are in an on state in a first pixel ring surrounding the pixels corresponding to the isolated dot when the pixels in the isolated dot are detected to be in the on state is determined. The first sum of pixels in the first pixel ring that are in the on state is compared with a first threshold sum. A first number of pixels in at least a second pixel ring either comprising of or surrounding the pixels corresponding to the isolated dot are turned on when the first sum of pixels in the on state is less than the first threshold sum.

摘要翻译： 本公开涉及一种用于处理由打印机打印的图像的孤立点的方法和系统。 该方法包括检测与图像中的孤立点相对应的像素是否处于接通状态。 确定当孤立点中的像素被检测为处于导通状态时围绕与孤立点相对应的像素的第一像素环中处于导通状态的第一和像素总和。 将处于导通状态的第一像素环中的第一像素总和与第一阈值和进行比较。 当处于导通状态的像素的第一和小于第一阈值和时，至少第二像素环中的第一数量的像素包括或者包围对应于孤立点的像素。

公开(公告)号：US08810859B2

公开(公告)日：2014-08-19

申请号：US13547802

申请日：2012-07-12

申请人： Amal Malik ,  Xing Li ,  Zhenhuan Wen

发明人： Amal Malik ,  Xing Li ,  Zhenhuan Wen

IPC分类号： H04N1/40 ,  G06T5/00

CPC分类号： H04N1/4092 ,  H04N1/405

摘要： The present disclosure relates to a method and system for processing isolated dots of an image to be printed by a printer. The method includes generating a random number, determining whether a target pixel is to be turned on and enabled for printing, determining a sum of pixels surrounding the target pixel in a plurality of pixels in a scanline of the image, the target pixel corresponding to an isolated dot in an input image, that are in an on state, the on state defined by a higher binary logic level relative to a binary logic level corresponding to a turned off pixel, determining a numerical value stored in a lookup table using the determined sum of pixels that are in the turned on state surrounding the target pixel as an index to the lookup table, and comparing the generated random number to the determined numerical value.

摘要翻译： 本公开涉及一种用于处理由打印机打印的图像的孤立点的方法和系统。 该方法包括生成随机数，确定是否打开目标像素并使其能够进行打印，确定图像的扫描线中的多个像素中的目标像素周围的像素的和，对应于 处于导通状态的输入图像中的孤立点，相对于与关闭像素相对应的二进制逻辑电平的较高二进制逻辑电平定义的导通状态，使用确定的总和确定存储在查找表中的数值 处于围绕目标像素的导通状态的像素作为查找表的索引，并且将生成的随机数与所确定的数值进行比较。

公开(公告)号：US20140016157A1

公开(公告)日：2014-01-16

申请号：US13547839

申请日：2012-07-12

申请人： Amal MALIK ,  Zhenhuan Wen ,  Xing Li

发明人： Amal MALIK ,  Zhenhuan Wen ,  Xing Li

IPC分类号： G06K15/00

CPC分类号： H04N1/4092 ,  G06K9/44 ,  G06K2209/01 ,  H04N1/40037

摘要： The present disclosure relates to a method and system for processing isolated holes in an image to be printed or displayed. The method includes detecting whether pixels corresponding to an isolated hole in the image are in an off state, determining a sum of pixels that are in an on state in a first pixel ring surrounding the pixels corresponding to the isolated hole when the one or more pixels in the isolated hole are detected to be in the off state, comparing the sum of pixels in the pixel ring that are in the on state with a threshold sum, turning off a number of pixels in at least another pixel ring either comprising of or surrounding the pixels when the first sum of pixels in the on state is greater than the threshold sum, and outputting the isolated hole including the turned off first number of pixels.

摘要翻译： 本公开涉及用于处理要打印或显示的图像中的隔离孔的方法和系统。 该方法包括检测对应于图像中的孤立孔的像素是否处于关闭状态，当一个或多个像素（像素）确定围绕与孤立孔对应的像素的第一像素环中的处于导通状态的像素的总和 在隔离孔中被检测为处于关闭状态，将处于导通状态的像素环中的像素的总和与阈值和进行比较，关闭至少另一像素环中的像素的数量，包括或围绕 当处于导通状态的第一个像素总和大于阈值和时的像素，并且输出包括关闭的第一数量的像素的隔离孔。

公开(公告)号：US20140016144A1

公开(公告)日：2014-01-16

申请号：US13547738

申请日：2012-07-12

申请人： Xing Li ,  Zhenhuan Wen ,  Amal Malik

发明人： Xing Li ,  Zhenhuan Wen ,  Amal Malik

IPC分类号： G06K1/00

CPC分类号： H04N1/4092 ,  H04N1/405

摘要： A method for detecting and growing isolated dots in a document image having a plurality of pixels is provided. The method includes isolating the pixels of the image to form a plurality of windows, each window having a target pixel; detecting an isolated dot in the received image; identifying a dot growth factor to grow the detected isolated dot in the received image; using the dot growth factor to identify tiered pixel patterns from a plurality of predefined, tiered pixel patterns, wherein each of the tiered pixel patterns having a predetermined dot growth factor; comparing the pixels within each window to the pixel patterns within the identified tier to identify a match between the pixels within the window and at least one of the pixel patterns; and changing a pixel value of the target pixel, when a match is identified, to grow the isolated dot by the dot growth factor.

摘要翻译： 提供了一种用于在具有多个像素的文档图像中检测和增长孤立点的方法。 该方法包括隔离图像的像素以形成多个窗口，每个窗口具有目标像素; 检测接收到的图像中的孤立点; 识别点生长因子以增加接收到的图像中检测到的孤立点; 使用所述点生长因子来从多个预定义的分层像素图案中识别分层像素图案，其中每个所述分层像素图案具有预定的点生长因子; 将每个窗口内的像素与所识别的层中的像素图案进行比较，以识别窗口内的像素与至少一个像素图案之间的匹配; 并且当识别出匹配时，改变目标像素的像素值，以使点生长因子增加孤立点。

公开(公告)号：US08705140B2

公开(公告)日：2014-04-22

申请号：US13585553

申请日：2012-08-14

申请人： Xing Li ,  Zhenhuan Wen ,  Peter D. McCandlish

发明人： Xing Li ,  Zhenhuan Wen ,  Peter D. McCandlish

IPC分类号： G06T5/00 ,  H04N1/407 ,  H04N1/409

CPC分类号： H04N1/4092 ,  H04N1/40075

摘要： Embodiments relate to systems and methods for dynamic sharpness control in system using binary to continuous tone conversion. Image data can be processed in the image path of a copier, printer, or other device to enhance sharpness based on user settings. The image can originate in a high-resolution and/or high-color format. The user can select sharpness values to provide better rendered detail. A front-end high-pass 2D filter can be adjusted in response to the settings. A binarized version of the image data is produced in the downstream path. At the back of the image path, the image would conventionally be sent through a binary data to extended contone (BDEC) low-pass filter, set to a fixed level, to produce contone output, counteracting the user's sharpness settings. Instead of applying a fixed back-end filter, that stage can be dynamically adjusted to correspond to the user's sharpness settings, reducing the low-pass effect proportionately.

摘要翻译： 实施例涉及使用二进制到连续色调转换的系统中的动态清晰度控制的系统和方法。 可以在复印机，打印机或其他设备的图像路径中处理图像数据，以根据用户设置增强锐度。 该图像可以以高分辨率和/或高色格式出现。 用户可以选择锐度值来提供更好的渲染细节。 可以根据设置调整前端高通2D滤镜。 图像数据的二值化版本在下游路径中产生。 在图像路径的背面，图像通常将通过二进制数据发送到扩展连续色调（BDEC）低通滤波器，设置为固定电平，以产生连续色调输出，抵消用户的锐度设置。 代替应用固定的后端滤波器，该阶段可以动态调整以对应于用户的锐度设置，按比例降低低通效果。