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1. 发明授权

US08363267B2 Image forming apparatus and color converting method thereof 失效
标题翻译：图像形成装置及其颜色转换方法
公开(公告)号：US08363267B2
公开(公告)日：2013-01-29
申请号：US11972905
申请日：2008-01-11
申请人： Jin-kyung Hong , Jae-min Shin , In-ho Park , Woo-ri Choi
发明人： Jin-kyung Hong , Jae-min Shin , In-ho Park , Woo-ri Choi
IPC分类号： G06F15/00 , G03F3/08 , H04N1/46 , H04N9/04
CPC分类号： H04N1/6058
摘要： An image forming apparatus including a scanning unit to scan an image and to output corresponding digital color coordinates; a determining unit to determine a local color gamut including the digital color coordinates, based on a reference matrix computed from a standard color gamut, which includes the local color gamut, and the plurality of digital color coordinates; a matrix selecting unit to select a color conversion matrix that corresponds to the determined local color gamut; and a computing unit to compute LAB color coordinates based on the selected color conversion matrix and the digital color coordinates. A method of color conversion using the image forming apparatus is also provided.
摘要翻译：一种图像形成装置，包括：扫描单元，扫描图像并输出相应的数字色坐标; 确定单元，用于基于从包括所述局部色域的所述标准色域计算的参考矩阵和所述多个数字色坐标来确定包括所述数字色坐标的局部色域; 矩阵选择单元，用于选择与所确定的本地色域相对应的颜色转换矩阵; 以及计算单元，用于基于所选择的颜色转换矩阵和数字颜色坐标来计算LAB颜色坐标。还提供了使用图像形成装置进行颜色转换的方法。

2. 发明授权

US08189914B2 Image forming apparatus and control method thereof 有权
标题翻译：图像形成装置及其控制方法
公开(公告)号：US08189914B2
公开(公告)日：2012-05-29
申请号：US12125258
申请日：2008-05-22
申请人： Jin Kyung Hong
发明人： Jin Kyung Hong
IPC分类号： G06K9/00
CPC分类号： H04N1/4095 , H04N1/4074
摘要： An image forming apparatus and a control method thereof include an adaptive threshold, which can be adapted for every block dividing an entire scanned region of a document, is set. A brightness value of original brightness data of the document is disregarded, and is substituted by a brightness value of background color data corresponding to the block, by use of a brightness threshold and a color difference threshold set as the adaptive threshold based on difference between brightness of the blocks and difference between color differences of the blocks. Accordingly, there is no problem of back surface noise such that an undesired object of a back surface of the duplex-printed document appears on a scan image in scanning a front surface of the document.
摘要翻译：一种图像形成装置及其控制方法包括可适用于分割文档的整个扫描区域的每个块的自适应阈值。忽略文件的原始亮度数据的亮度值，并且通过使用亮度阈值和设置为自适应阈值的色差阈值，基于亮度之间的差异来代替与块对应的背景颜色数据的亮度值的块和块的颜色差异之间的差异。因此，没有背面噪声的问题，使得双面打印文档的背面的不期望的物体在扫描文档的正面时出现在扫描图像上。

3. 发明授权

US08405884B2 Scanner, image correcting method, and image forming apparatus for correcting an image by determining a foreign substance position based on a shading profile 有权
标题翻译：扫描仪，图像校正方法和图像形成装置，用于通过基于阴影轮廓确定异物位置来校正图像
公开(公告)号：US08405884B2
公开(公告)日：2013-03-26
申请号：US12489810
申请日：2009-06-23
申请人： Jin-kyung Hong , Jonghyon Yi
发明人： Jin-kyung Hong , Jonghyon Yi
IPC分类号： H04N1/40 , G06K7/00 , G03G15/04
CPC分类号： H04N1/401
摘要： A scanner including: a transparent plate; a light emitting unit that emits light to an object on the transparent plate; a sensor to form an image of the object; a focusing lens unit that is arranged on a light path between the transparent plate and the sensor, to focus light from the object onto the sensor; and a controller to determine whether a foreign substance is disposed in the light path, using the image, calculates a position of the foreign substance, and corrects the image on the basis of the calculated position of the foreign substance.
摘要翻译：一种扫描器，包括：透明板; 向所述透明板上的物体发光的发光单元; 用于形成物体的图像的传感器; 聚焦透镜单元，布置在透明板和传感器之间的光路上，以将来自物体的光聚焦到传感器上; 以及控制器，使用图像来确定异物是否被布置在光路中，计算异物的位置，并且基于计算出的异物的位置校正图像。

4. 发明申请

US20100073734A1 SCANNER, IMAGE CORRECTING METHOD THEREIN, AND IMAGE FORMING APPARATUS HAVING THE SAME 有权
标题翻译：扫描仪，其图像校正方法和具有该图像的图像形成装置
公开(公告)号：US20100073734A1
公开(公告)日：2010-03-25
申请号：US12489810
申请日：2009-06-23
申请人： Jin-kyung HONG , Jonghyon YI
发明人： Jin-kyung HONG , Jonghyon YI
IPC分类号： H04N1/40
CPC分类号： H04N1/401
摘要： A scanner including: a transparent plate; a light emitting unit that emits light to an object on the transparent plate; a sensor to form an image of the object; a focusing lens unit that is arranged on a light path between the transparent plate and the sensor, to focus light from the object onto the sensor; and a controller to determine whether a foreign substance is disposed in the light path, using the image, calculates a position of the foreign substance, and corrects the image on the basis of the calculated position of the foreign substance.
摘要翻译：一种扫描器，包括：透明板; 向所述透明板上的物体发光的发光单元; 用于形成物体的图像的传感器; 聚焦透镜单元，布置在透明板和传感器之间的光路上，以将来自物体的光聚焦到传感器上; 以及控制器，使用图像来确定异物是否被布置在光路中，计算异物的位置，并且基于计算出的异物的位置校正图像。

5. 发明申请

US20090059326A1 COLOR SPACE CONVERSION APPARATUS AND METHOD FOR CONTROLLING THE SAME 失效
标题翻译：彩色空间变换装置及其控制方法
公开(公告)号：US20090059326A1
公开(公告)日：2009-03-05
申请号：US12143111
申请日：2008-06-20
申请人： Jin Kyung Hong
发明人： Jin Kyung Hong
IPC分类号： G03F3/00
CPC分类号： H04N1/6058 , G06T11/001 , H04N1/603
摘要： A color space conversion apparatus and a method of controlling the same, the color space conversion apparatus including: a first color space conversion unit to convert a first color space into a first Lab color space; a second color space conversion unit to convert a second color space into a second Lab color space; a spherical color space conversion unit to expand the first and second Lab color spaces into a spherical color space; and a spherical gamut mapping unit to perform gamut mapping between the first and second color spaces through spherical parametrization, thus avoiding problems in color reproduction caused by the lack of one-to-one correspondence between Lab color space values of the input and output devices.
摘要翻译：一种颜色空间转换装置及其控制方法，所述色彩空间转换装置包括：第一颜色空间转换单元，用于将第一颜色空间转换为第一Lab颜色空间; 第二颜色空间转换单元，用于将第二颜色空间转换为第二Lab颜色空间; 球面颜色空间转换单元，用于将第一和第二Lab色彩空间扩展成球面色空间; 以及球面映射单元，其通过球面参数化来执行第一和第二颜色空间之间的色域映射，从而避免由于输入和输出设备的Lab色彩空间值之间缺乏一一对应而引起的色彩再现问题。

6. 发明授权

US08139265B2 Color space conversion apparatus and method for controlling the same 失效
标题翻译：色空间转换装置及其控制方法
公开(公告)号：US08139265B2
公开(公告)日：2012-03-20
申请号：US12143111
申请日：2008-06-20
申请人： Jin Kyung Hong
发明人： Jin Kyung Hong
IPC分类号： H04N1/04
CPC分类号： H04N1/6058 , G06T11/001 , H04N1/603
摘要： A color space conversion apparatus and a method of controlling the same, the color space conversion apparatus including: a first color space conversion unit to convert a first color space into a first Lab color space; a second color space conversion unit to convert a second color space into a second Lab color space; a spherical color space conversion unit to expand the first and second Lab color spaces into a spherical color space; and a spherical gamut mapping unit to perform gamut mapping between the first and second color spaces through spherical parametrization, thus avoiding problems in color reproduction caused by the lack of one-to-one correspondence between Lab color space values of the input and output devices.
摘要翻译：一种颜色空间转换装置及其控制方法，所述色彩空间转换装置包括：第一颜色空间转换单元，用于将第一颜色空间转换为第一Lab颜色空间; 第二颜色空间转换单元，用于将第二颜色空间转换为第二Lab颜色空间; 球面颜色空间转换单元，用于将第一和第二Lab色彩空间扩展成球面色空间; 以及球面映射单元，其通过球面参数化来执行第一和第二颜色空间之间的色域映射，从而避免由于输入和输出设备的Lab色彩空间值之间缺乏一一对应而引起的色彩再现问题。

7. 发明申请

US20080297817A1 IMAGE FORMING APPARATUS AND COLOR CONVERTING METHOD THEREOF 失效
标题翻译：图像形成装置及其颜色转换方法
公开(公告)号：US20080297817A1
公开(公告)日：2008-12-04
申请号：US11972905
申请日：2008-01-11
申请人： Jin-kyung Hong , Jae-min Shin , In-ho Park , Woo-ri Choi
发明人： Jin-kyung Hong , Jae-min Shin , In-ho Park , Woo-ri Choi
IPC分类号： H04N1/60
CPC分类号： H04N1/6058
摘要： An image forming apparatus including a scanning unit to scan an image and to output corresponding digital color coordinates; a determining unit to determine a local color gamut including the digital color coordinates, based on a reference matrix computed from a standard color gamut, which includes the local color gamut, and the plurality of digital color coordinates; a matrix selecting unit to select a color conversion matrix that corresponds to the determined local color gamut; and a computing unit to compute LAB color coordinates based on the selected color conversion matrix and the digital color coordinates. A method of color conversion using the image forming apparatus is also provided.
摘要翻译：一种图像形成装置，包括：扫描单元，扫描图像并输出相应的数字色坐标; 确定单元，用于基于从包括所述局部色域的所述标准色域计算的参考矩阵和所述多个数字色坐标来确定包括所述数字色坐标的局部色域; 矩阵选择单元，用于选择与所确定的本地色域相对应的颜色转换矩阵; 以及计算单元，用于基于所选择的颜色转换矩阵和数字颜色坐标来计算LAB颜色坐标。还提供了使用图像形成装置进行颜色转换的方法。

8. 发明申请

US20090091801A1 IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF 有权
标题翻译：图像形成装置及其控制方法
公开(公告)号：US20090091801A1
公开(公告)日：2009-04-09
申请号：US12125258
申请日：2008-05-22
申请人： Jin Kyung HONG
发明人： Jin Kyung HONG
IPC分类号： H04N1/38
CPC分类号： H04N1/4095 , H04N1/4074
摘要： An image forming apparatus and a control method thereof include an adaptive threshold, which can be adapted for every block dividing an entire scanned region of a document, is set. A brightness value of original brightness data of the document is disregarded, and is substituted by a brightness value of background color data corresponding to the block, by use of a brightness threshold and a color difference threshold set as the adaptive threshold based on difference between brightness of the blocks and difference between color differences of the blocks. Accordingly, there is no problem of back surface noise such that an undesired object of a back surface of the duplex-printed document appears on a scan image in scanning a front surface of the document.
摘要翻译：一种图像形成装置及其控制方法包括可适用于分割文档的整个扫描区域的每个块的自适应阈值。忽略文件的原始亮度数据的亮度值，并且通过使用亮度阈值和设置为自适应阈值的色差阈值，基于亮度之间的差异被由与块相对应的背景颜色数据的亮度值代替的块和块的颜色差异之间的差异。因此，没有背面噪声的问题，使得双面打印文档的背面的不期望的物体在扫描文档的正面时出现在扫描图像上。

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