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1. 发明授权

US08452090B1 Bayer reconstruction of images using a GPU 有权
标题翻译：使用GPU对拜耳重建图像
公开(公告)号：US08452090B1
公开(公告)日：2013-05-28
申请号：US11113656
申请日：2005-04-25
申请人： Ralph Brunner , Mark Zimmer , Kok Chen
发明人： Ralph Brunner , Mark Zimmer , Kok Chen
IPC分类号： G06K9/00
CPC分类号： G06K9/00 , G06T3/4015 , H04N1/46 , H04N9/00 , H04N9/045 , H04N2209/046
摘要： A system and method for performing Bayer reconstruction of images using a programmable graphics processing unit (GPU) are described herein. A Bayer filtered image in RAW format is uploaded to the GPU, unpacked, and reconstructed. Optionally, the reconstructed image may be transformed into any desired color space and/or displayed by a video card in which the GPU resides. The reconstruction is performed independently on each of the red, blue, and green image fields. The red and blue image fields are reconstructed using first and second interpolation passes in first and second orthogonal directions. Each reconstruction pass preferably employs a two-lobed Lanczos filter. The green image field is interpolated using a single interpolation pass in a direction diagonal to the first and second orthogonal directions, and preferably employs a box filter.
摘要翻译：本文描述了使用可编程图形处理单元（GPU）执行图像的拜耳重建的系统和方法。以RAW格式将拜耳过滤的图像上传到GPU，解压缩并重建。可选地，重建图像可以被转换成任何期望的颜色空间和/或由GPU所在的视频卡显示。在红色，蓝色和绿色图像场中的每一个上独立地执行重建。使用第一和第二正交方向上的第一和第二插值遍重建红色和蓝色图像场。每个重建通道优选采用双裂片Lanczos滤波器。绿色图像场在与第一和第二正交方向对角的方向上使用单个插值遍进进行内插，并且优选地采用盒式滤波器。

2. 发明申请

US20050286794A1 Gaussian blur approximation suitable for GPU 有权
标题翻译：高斯模糊近似适用于GPU
公开(公告)号：US20050286794A1
公开(公告)日：2005-12-29
申请号：US10876039
申请日：2004-06-24
申请人： Ralph Brunner , Kok Chen , John Harper
发明人： Ralph Brunner , Kok Chen , John Harper
IPC分类号： G06K9/32 , G06K9/40 , G06T5/00
CPC分类号： G06T5/002 , G06T5/20
摘要： A Gaussian blur approximation is applied to an image by repeated down-sampling operations followed by an up-sample operation. By using a truncated Gaussian filter as the down-sample filter, the frequency spectrum removed during down-sampling operations closely approximates the frequency spectrum lost during a true Gaussian blur operation. While any “good” up-sample filter may be used, up-sampling via linear interpolation may be especially beneficial in systems having a dedicated graphics processing unit. One benefit of the described technique is that it is computationally less costly to implement than a Gaussian blur. Another benefit is that this computational benefit increases as the size of the blur increases—becoming significant even for small blurs. Yet another benefit of the invention is that a judicious selection of pixel address to convolve with the filter leads to substantially reduced number of texture lookups required to effect a convolution.
摘要翻译：高斯模糊近似通过重复的下采样操作随后进行上采样操作来应用于图像。通过使用截断高斯滤波器作为下采样滤波器，在下采样操作期间去除的频谱与真正的高斯模糊操作期间的频谱损失密切相近。虽然可以使用任何“良好”的抽样滤波器，但通过线性插值的上采样在具有专用图形处理单元的系统中尤其有利。所描述的技术的一个好处是，与高斯模糊相比，在计算上成本较低。另一个好处是，随着模糊大小的增加，这种计算效益即使对于小的模糊也变得显着。本发明的另一个好处是，与滤波器卷积的像素地址的明智选择导致实现卷积所需的纹理查找的数量大大减少。

3. 发明授权

US07397964B2 Gaussian blur approximation suitable for GPU 有权
标题翻译：高斯模糊近似适用于GPU
公开(公告)号：US07397964B2
公开(公告)日：2008-07-08
申请号：US10876039
申请日：2004-06-24
申请人： Ralph Brunner , Kok Chen , John Harper
发明人： Ralph Brunner , Kok Chen , John Harper
IPC分类号： G06K9/40
CPC分类号： G06T5/002 , G06T5/20
摘要： A Gaussian blur approximation is applied to an image by repeated down-sampling operations followed by an up-sample operation. By using a truncated Gaussian filter as the down-sample filter, the frequency spectrum removed during down-sampling operations closely approximates the frequency spectrum lost during a true Gaussian blur operation. While any “good” up-sample filter may be used, up-sampling via linear interpolation may be especially beneficial in systems having a dedicated graphics processing unit. One benefit of the described technique is that it is computationally less costly to implement than a Gaussian blur. Another benefit is that this computational benefit increases as the size of the blur increases—becoming significant even for small blurs. Yet another benefit of the invention is that a judicious selection of pixel address to convolve with the filter leads to substantially reduced number of texture lookups required to effect a convolution.
摘要翻译：高斯模糊近似通过重复的下采样操作随后进行上采样操作来应用于图像。通过使用截断高斯滤波器作为下采样滤波器，在下采样操作期间去除的频谱与真正的高斯模糊操作期间的频谱损失密切相近。虽然可以使用任何“良好”的抽样滤波器，但通过线性插值的上采样在具有专用图形处理单元的系统中尤其有利。所描述的技术的一个好处是，与高斯模糊相比，在计算上成本较低。另一个好处是，随着模糊大小的增加，这种计算效益即使对于小的模糊也变得显着。本发明的另一个好处是，与滤波器卷积的像素地址的明智选择导致实现卷积所需的纹理查找的数量大大减少。

4. 发明申请

US20070206028A1 MANIPULATING TEXT AND GRAPHIC APPEARANCE 有权
标题翻译：操纵文字和图形外观
公开(公告)号：US20070206028A1
公开(公告)日：2007-09-06
申请号：US11745157
申请日：2007-05-07
申请人： Mark Zimmer , Kok Chen
发明人： Mark Zimmer , Kok Chen
IPC分类号： G09G5/00
CPC分类号： G06T11/203 , G06T5/002 , G06T5/20
摘要： A method, device and computer system for creating a smooth, continuous height (scalar or vector) field are described. The described techniques permit arbitrary closed regions to be smoothly shaded without producing unnatural smoothness at the region's edges or boundaries.
摘要翻译：描述了用于创建平滑，连续的高度（标量或矢量）场的方法，设备和计算机系统。所描述的技术允许任意闭合区域被平滑地遮蔽，而不会在该区域的边缘或边界处产生不自然的平滑度。

5. 发明授权

US07460129B2 Manipulating text and graphic appearance 有权
标题翻译：操纵文字和图形外观
公开(公告)号：US07460129B2
公开(公告)日：2008-12-02
申请号：US11745157
申请日：2007-05-07
申请人： Mark Zimmer , Kok Chen
发明人： Mark Zimmer , Kok Chen
IPC分类号： G06T17/00 , G09G5/00 , G06K9/40 , G06K9/36 , G06K9/20 , G06K9/68 , G06T11/00
CPC分类号： G06T11/203 , G06T5/002 , G06T5/20
摘要： A method, device and computer system for creating a smooth, continuous height (scalar or vector) field are described. The described techniques permit arbitrary closed regions to be smoothly shaded without producing unnatural smoothness at the region's edges or boundaries.
摘要翻译：描述了用于创建平滑，连续的高度（标量或矢量）场的方法，设备和计算机系统。所描述的技术允许任意闭合区域被平滑地遮蔽，而不会在该区域的边缘或边界处产生不自然的平滑度。

6. 发明授权

US07227551B2 Manipulating text and graphic appearance 有权
标题翻译：操纵文字和图形外观
公开(公告)号：US07227551B2
公开(公告)日：2007-06-05
申请号：US11021358
申请日：2004-12-23
申请人： Mark Zimmer , Kok Chen
发明人： Mark Zimmer , Kok Chen
IPC分类号： G06T17/00 , G09G5/00 , G06K9/40 , G06K9/36 , G06K9/20 , G06K9/68 , G06T11/00
CPC分类号： G06T11/203 , G06T5/002 , G06T5/20
摘要： A method, device and computer system for creating a smooth, continuous height (scalar or vector) field are described. The described techniques permit arbitrary closed regions to be smoothly shaded without producing unnatural smoothness at the region's edges or boundaries.
摘要翻译：描述了用于创建平滑，连续的高度（标量或矢量）场的方法，设备和计算机系统。所描述的技术允许任意闭合区域被平滑地遮蔽，而不会在该区域的边缘或边界处产生不自然的平滑度。

7. 发明申请

US20060139369A1 Manipulating text and graphic appearance 有权
标题翻译：操纵文字和图形外观
公开(公告)号：US20060139369A1
公开(公告)日：2006-06-29
申请号：US11021358
申请日：2004-12-23
申请人： Mark Zimmer , Kok Chen
发明人： Mark Zimmer , Kok Chen
IPC分类号： G09G5/00
CPC分类号： G06T11/203 , G06T5/002 , G06T5/20
摘要： A method, device and computer system for creating a smooth, continuous height (scalar or vector) field are described. The described techniques permit arbitrary closed regions to be smoothly shaded without producing unnatural smoothness at the region's edges or boundaries.
摘要翻译：描述了用于创建平滑，连续的高度（标量或矢量）场的方法，设备和计算机系统。所描述的技术允许任意闭合区域被平滑地遮蔽，而不会在该区域的边缘或边界处产生不自然的平滑度。

8. 发明申请

US20110249141A1 METHOD AND APPARATUS FOR COLOR CORRECTION OF COLOR DEVICES FOR VARIOUS OPERATING CONDITIONS 审中-公开
标题翻译：用于各种操作条件的颜色设备的颜色校正的方法和装置
公开(公告)号：US20110249141A1
公开(公告)日：2011-10-13
申请号：US13167642
申请日：2011-06-23
申请人： Kok Chen , Gabriel G. Marcu , Wei Chen , John Z.Z. Zhong
发明人： Kok Chen , Gabriel G. Marcu , Wei Chen , John Z.Z. Zhong
IPC分类号： H04N9/73
CPC分类号： H04N5/58 , H04N9/68 , H04N21/42202 , H04N21/44 , H04N21/4854
摘要： Methods and apparatuses for color correction of color device for various operating conditions. In at least one embodiment of the present invention, operating under a current condition, a color correction operation that is derived from color correction operations defined for other conditions is performed on the color data. In another embodiment, a device profile for managing colors for a color device operating under one condition is interpolated from the device profiles for the color device operating under other conditions (e.g., based on the input received from a user interface according to the perception of the user or based on the measurement of a sensor). The interpolation can be based on the input received from a user interface according to the perception of the user or it can be based on the measurement of a sensor or a set of sensors. Various operating conditions for a color device (e.g., a scanner, a camera, a video camera, a printer, a display device such as a CRT monitor or an LCD display panel, a television set, or others) include chromaticity and illumination of ambient light, background color for a display device, characteristics of print media for a printer, humidity, temperature, pressure and ink level for an ink jet printer, the age of a light source for a scanner, and others.
摘要翻译：用于各种操作条件的彩色装置的颜色校正方法和装置。在本发明的至少一个实施例中，在当前条件下操作，对颜色数据执行从为其他条件定义的颜色校正操作导出的颜色校正操作。在另一个实施例中，用于管理在一个条件下操作的彩色设备的颜色的设备配置文件从用于在其他条件下操作的颜色设备的设备配置文件（例如，基于根据用户界面的感知从用户界面接收的输入）用户或基于传感器的测量）。内插可以基于根据用户感知从用户界面接收的输入，或者可以基于传感器或一组传感器的测量。用于彩色设备（例如，扫描仪，照相机，摄像机，打印机，CRT显示器或LCD显示面板，电视机等的显示设备）的各种操作条件包括色度和环境照度用于显示设备的光，背景颜色，用于打印机的打印介质的特性，用于喷墨打印机的湿度，温度，压力和墨水水平，扫描仪的光源的时代等。

9. 发明授权

US07688328B2 Luminance point correction without luminance degradation 有权
标题翻译：亮度点校正无亮度降低
公开(公告)号：US07688328B2
公开(公告)日：2010-03-30
申请号：US11265882
申请日：2005-11-02
申请人： Kok Chen , Gabriel G. Marcu
发明人： Kok Chen , Gabriel G. Marcu
IPC分类号： G09G5/02 , G09G3/36 , H04N5/202 , H04N5/14 , G06K9/00
CPC分类号： G09G5/02 , G09G2320/0666 , G09G2320/0673
摘要： White point is corrected without degrading luminance on a display device. A white point manager modifies the balance between red, green and blue according to a target white point up to a threshold gray value. As the gray scale approaches white from the threshold gray value, the white point manager blends the balance between red, green and blue from the target white point substantially towards the native white point for the display device, so as not to degrade luminance as the gray scale approaches white.
摘要翻译：校正白点而不降低显示装置上的亮度。白点管理员根据目标白点修改红，绿和蓝之间的平衡，直到阈值灰度值。当灰度级从阈值灰度值接近白色时，白点管理器将红色，绿色和蓝色之间的平衡从目标白点基本上与显示设备的本机白点混合，以免将亮度降低为灰色规模接近白色。

10. 发明申请

US20080024805A1 Conversion of output device color values to minimize image quality artifacts 失效
标题翻译：转换输出设备颜色值以最小化图像质量伪像
公开(公告)号：US20080024805A1
公开(公告)日：2008-01-31
申请号：US11902778
申请日：2007-09-25
申请人： Kevin Andresen , Kok Chen
发明人： Kevin Andresen , Kok Chen
IPC分类号： G06F15/00 , G03F3/08
CPC分类号： G06K15/02 , G06K15/1825 , G06K2215/0094 , G06T11/001 , H04N1/58
摘要： Undesirable artifacts appearing in color images, such as blooming or smudging around the edges of text, are avoided through selective reduction of the color gamut for objects which form the image. Individual component color values are modified by taking into account combinations of colors and their effect upon the artifacts to be eliminated. Only those parameter values which contribute to the artifact are modified. Other parameter values are left intact, to maintain the original image characteristics. When a color value is modified, all components of that color are modified in a symmetrical manner, to preserve the hue of the original color. The impact on the image is further minimized by selectively applying color correction only to those objects in which the artifact is pronounced.
摘要翻译：通过选择性地减少形成图像的对象的色域来避免出现在彩色图像中的不期望的伪像，例如在文本边缘处的起霜或污迹。通过考虑颜色的组合及其对待消除的伪影的影响来修改单个组件颜色值。只修改有助于工件的参数值。其他参数值保持原样，以保持原始图像特征。当颜色值被修改时，该颜色的所有成分都以对称方式修改，以保持原始颜色的色调。通过选择性地将色彩校正仅仅应用于伪造物的那些对象来进一步减小对图像的影响。

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