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1. 发明申请

US20110310278A1 SYSTEMS AND METHODS FOR ADAPTIVE CONTROL AND DYNAMIC RANGE EXTENSION OF IMAGE SENSORS 有权
标题翻译：自适应控制和动态范围扩展图像传感器的系统和方法
公开(公告)号：US20110310278A1
公开(公告)日：2011-12-22
申请号：US12816575
申请日：2010-06-16
申请人： Yingjun Bai , Xiangli Li
发明人： Yingjun Bai , Xiangli Li
IPC分类号： H04N5/335 , H04N5/235
CPC分类号： H04N9/045 , H04N5/35554 , H04N5/35563 , H04N5/3745
摘要： Systems and methods are provided for obtaining adaptive exposure control and dynamic range extension of image sensors. In some embodiments, an image sensor of an image system can include a pixel array with one or more clear pixels. The image system can separately control the amount of time that pixels in different lines of the pixel array are exposed to light. As a result, the image system can adjust the exposure times to prevent over-saturation of the clear pixels, while also allowing color pixels of the pixel array to be exposed to light for a longer period of time. In some embodiments, the dynamic range of the image system can be extended through a reconstruction and interpolation process. For example, a signal reconstruction module can extend the dynamic range of one or more green pixels by combining signals associated with green pixels in different lines of the pixel array.
摘要翻译：提供了用于获得图像传感器的自适应曝光控制和动态范围扩展的系统和方法。在一些实施例中，图像系统的图像传感器可以包括具有一个或多个透明像素的像素阵列。图像系统可以分别控制像素阵列的不同行中的像素暴露于光的时间量。结果，图像系统可以调整曝光时间以防止透明像素的过度饱和，同时还允许像素阵列的彩色像素暴露于较长时间的光。在一些实施例中，图像系统的动态范围可以通过重建和内插处理来扩展。例如，信号重建模块可以通过组合与像素阵列的不同行中的绿色像素相关联的信号来扩展一个或多个绿色像素的动态范围。

2. 发明授权

US08514322B2 Systems and methods for adaptive control and dynamic range extension of image sensors 有权
标题翻译：图像传感器的自适应控制和动态范围扩展的系统和方法
公开(公告)号：US08514322B2
公开(公告)日：2013-08-20
申请号：US12816575
申请日：2010-06-16
申请人： Yingjun Bai , Xiangli Li
发明人： Yingjun Bai , Xiangli Li
IPC分类号： H04N5/235 , G03B7/00 , H04N9/083 , H04N3/14 , H04N5/335 , H04N9/04
CPC分类号： H04N9/045 , H04N5/35554 , H04N5/35563 , H04N5/3745
摘要： Systems and methods are provided for obtaining adaptive exposure control and dynamic range extension of image sensors. In some embodiments, an image sensor of an image system can include a pixel array with one or more clear pixels. The image system can separately control the amount of time that pixels in different lines of the pixel array are exposed to light. As a result, the image system can adjust the exposure times to prevent over-saturation of the clear pixels, while also allowing color pixels of the pixel array to be exposed to light for a longer period of time. In some embodiments, the dynamic range of the image system can be extended through a reconstruction and interpolation process. For example, a signal reconstruction module can extend the dynamic range of one or more green pixels by combining signals associated with green pixels in different lines of the pixel array.
摘要翻译：提供了用于获得图像传感器的自适应曝光控制和动态范围扩展的系统和方法。在一些实施例中，图像系统的图像传感器可以包括具有一个或多个透明像素的像素阵列。图像系统可以分别控制像素阵列的不同行中的像素暴露于光的时间量。结果，图像系统可以调整曝光时间以防止透明像素的过度饱和，同时还允许像素阵列的彩色像素暴露于较长时间的光。在一些实施例中，图像系统的动态范围可以通过重建和内插处理来扩展。例如，信号重建模块可以通过组合与像素阵列的不同行中的绿色像素相关联的信号来扩展一个或多个绿色像素的动态范围。

3. 发明授权

US09066072B2 Systems and methods for calibrating image sensors 有权
标题翻译：用于校准图像传感器的系统和方法
公开(公告)号：US09066072B2
公开(公告)日：2015-06-23
申请号：US12839741
申请日：2010-07-20
申请人： Yingjun Bai , Brian Keelan , Gennadiy Agranov
发明人： Yingjun Bai , Brian Keelan , Gennadiy Agranov
IPC分类号： H01L27/146 , H04N1/62 , H04N9/04 , H04N17/00
CPC分类号： H04N17/002 , H01L27/14632 , H04N1/628 , H04N9/045
摘要： Systems and methods are provided for calibrating image sensors. In some embodiments, a processing module of an image system can automatically perform a self-calibration process after a production unit of an image sensor has been integrated into an end product system. For example, the processing module can calibrate a production unit based on one or more reference pixels of the production unit, where the one or more reference pixels have minimal color filtration. In some embodiments, the processing module may perform local calibrations by correcting specifically for spatial variations in a color filter array (“CFA”). In some embodiments, the processing module can perform global calibrations by correcting for optical density variations in the CFA. In some embodiments, a processing module can determine whether the cause of production variations is related to production variations of a CFA or production variations of an infrared (“IR”) cutoff filter.
摘要翻译：提供了校准图像传感器的系统和方法。在一些实施例中，图像系统的处理模块可以在将图像传感器的生产单元集成到最终产品系统中之后自动执行自校准过程。例如，处理模块可以基于生产单元的一个或多个参考像素校准生产单元，其中一个或多个参考像素具有最少的颜色过滤。在一些实施例中，处理模块可以通过特别地校正滤色器阵列（“CFA”）中的空间变化来执行本地校准。在一些实施例中，处理模块可以通过校正CFA中的光密度变化来执行全局校准。在一些实施例中，处理模块可以确定生产变化的原因是否与CFA的生产变化或红外线（“IR”）截止滤波器的生产变化有关。

4. 发明授权

US08731277B2 Methods for matching gain and color for stereoscopic imaging systems 有权
标题翻译：用于匹配立体成像系统的增益和颜色的方法
公开(公告)号：US08731277B2
公开(公告)日：2014-05-20
申请号：US13118974
申请日：2011-05-31
申请人： Yingjun Bai , Honghong Peng , Miguel Flores , Elizabeth Martin , Andrew Hanvey
发明人： Yingjun Bai , Honghong Peng , Miguel Flores , Elizabeth Martin , Andrew Hanvey
IPC分类号： G06K9/00 , H04N13/00
CPC分类号： H04N13/133 , H04N13/239 , H04N13/257
摘要： Stereoscopic imaging devices may include stereoscopic imagers, stereoscopic displays, and processing circuitry. The processing circuitry may be used to collect auto white balance (AWB) statistics for each image captured by the stereoscopic imager. A stereoscopic imager may include two image modules that may be color calibrated relative to each other or relative to a standard calibrator. AWB statistics may be used by the processing circuitry to determine global, local and spatial offset gain adjustments to provide intensity matched stereoscopic images for display. AWB statistics may be combined by the processing circuitry with color correction offsets determined during color calibration to determine color-transformation matrices for displaying color matched stereoscopic images using the stereoscopic display. Gain and color-transformation corrections may be continuously applied during operation of a stereoscopic imaging device to provide intensity-matched, color-matched stereoscopic images in any lighting condition.
摘要翻译：立体成像装置可以包括立体成像器，立体显示器和处理电路。处理电路可以用于收集由立体成像器捕获的每个图像的自动白平衡（AWB）统计。立体成像器可以包括可以相对于彼此或相对于标准校准器进行颜色校准的两个图像模块。处理电路可以使用AWB统计量来确定全局，局部和空间偏移增益调整，以提供用于显示的强度匹配立体图像。 AWB统计可以由处理电路与在颜色校准期间确定的颜色校正偏移相组合，以确定用于使用立体显示来显示颜色匹配的立体图像的颜色变换矩阵。可以在立体成像装置的操作期间连续地应用增益和颜色变换校正，以在任何照明条件下提供强度匹配的，颜色匹配的立体图像。

5. 发明申请

US20130093915A1 Multi-Illuminant Color Matrix Representation and Interpolation Based on Estimated White Points 审中-公开
标题翻译：基于估计白点的多光源颜色矩阵表示和插值
公开(公告)号：US20130093915A1
公开(公告)日：2013-04-18
申请号：US13342879
申请日：2012-01-03
申请人： Xuemei Zhang , Yingjun Bai , Paul Hubel
发明人： Xuemei Zhang , Yingjun Bai , Paul Hubel
IPC分类号： H04N9/73 , G06K9/00
CPC分类号： H04N1/608 , H04N9/045 , H04N9/735
摘要： This disclosure pertains to devices, methods, and computer readable media for improved accuracy of color correction matrix (CCM) coefficient determination based on estimated white point, while maintaining a relatively smooth variation of CCM coefficients over the white point space. The techniques disclosed herein may be achieved via the storage of a limited number of determined CCM multiplier vectors and thus be effective in the camera image pipelines of real image capture devices. With the more accurate CCMs calculated with the disclosed techniques, visible improvement in rendered colors may be achieved as compared to using interpolation from a handful of corner CCMs. The color correction techniques described herein may be implemented by dedicated or general purpose hardware, general application software, or a combination of software and hardware in a computer system.
摘要翻译：本公开涉及用于基于估计的白点提高颜色校正矩阵（CCM）系数确定的精度的装置，方法和计算机可读介质，同时保持CCM系数在白点空间上的相对平滑的变化。本文公开的技术可以通过存储有限数量的确定的CCM乘数向量来实现，并且因此在真实图像捕获设备的相机图像管线中是有效的。利用所公开的技术计算出的更准确的CCM，与使用少数拐角CCM的插值相比，可以实现渲染颜色的可见改善。本文描述的颜色校正技术可以由计算机系统中的专用或通用硬件，通用应用软件或软件和硬件的组合来实现。

6. 发明授权

US08345999B2 System and method for monochrome binary compression on legacy devices 有权
标题翻译：传统设备上单色二进制压缩的系统和方法
公开(公告)号：US08345999B2
公开(公告)日：2013-01-01
申请号：US11304483
申请日：2005-12-15
申请人： Yingjun Bai , Ramesh Nagarajan
发明人： Yingjun Bai , Ramesh Nagarajan
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： H04N1/413 , H04N1/3333 , H04N19/27 , H04N19/30 , H04N2201/33357
摘要： Disclosed is a system and method for monochrome or binary compression, and more particularly compression of binary images segmented in a binary domain into at least two regions of different image types, where the regions are compressed using different compression techniques.
摘要翻译：公开了一种用于单色或二进制压缩的系统和方法，更具体地，将二进制域中分段的二进制图像压缩成不同图像类型的至少两个区域，其中使用不同压缩技术来压缩区域。

7. 发明授权

US07952753B2 System and method for replacing binary level masks in a page description 有权
标题翻译：用于在页面描述中替换二进制级掩码的系统和方法
公开(公告)号：US07952753B2
公开(公告)日：2011-05-31
申请号：US11518160
申请日：2006-09-11
申请人： Yingjun Bai , Ramesh Nagarajan
发明人： Yingjun Bai , Ramesh Nagarajan
IPC分类号： G06F15/00
CPC分类号： G06K15/02 , G06K15/1825 , G06K15/1849
摘要： A system and method for rendering an image file for outputting a copy of an image represented by the image file. In some embodiments, rendering the image includes generating an output file, such as an output bitmap based on a predetermined halftone. In one embodiment, the system comprises an input module, and a processor. The input module obtains a page description of the image to be output. In some instances, the page description includes one or more level masks designed to impart corresponding transparency levels to one or more objects in the page description. The processor (i) detects the one or more level masks in the page description, (ii) determines the one or more corresponding transparency levels of the one or more detected level masks, (iii) obtains one or more custom masks that correspond to the same one or more transparency levels as the one or more detected level masks, wherein the one or more custom masks are designed based on the predetermined halftone, and (iv) replaces the one or more level masks in the page description with the corresponding one or more custom masks.
摘要翻译：一种用于呈现用于输出由图像文件表示的图像的副本的图像文件的系统和方法。在一些实施例中，渲染图像包括基于预定的半色调生成诸如输出位图之类的输出文件。在一个实施例中，系统包括输入模块和处理器。输入模块获得要输出的图像的页面描述。在一些情况下，页面描述包括设计成将相应的透明度级别赋予页面描述中的一个或多个对象的一个或多个级别掩码。处理器（i）检测页面描述中的一个或多个级别掩码，（ii）确定一个或多个检测到的级别掩码的一个或多个相应的透明度级别，（iii）获得一个或多个对应于与一个或多个检测到的级别掩模相同的一个或多个透明度级别，其中基于预定的半色调设计一个或多个自定义掩码，以及（iv）用页面描述中的一个或多个级别掩码替换相应的一个或多个更多自定义面具。

8. 发明授权

US07684633B2 System and method for image file size control in scanning services 有权
标题翻译：扫描服务中图像文件大小控制的系统和方法
公开(公告)号：US07684633B2
公开(公告)日：2010-03-23
申请号：US11168128
申请日：2005-06-28
申请人： Yingjun Bai , Xing Li
发明人： Yingjun Bai , Xing Li
IPC分类号： G06K9/00
CPC分类号： H04N1/40062 , H04N1/4092 , H04N1/41
摘要： A system and method for controlling the work flow or processing of scanned images is disclosed. The system and method identify appropriate image processing techniques, particularly techniques well-suited to enable image compression yet maintain image quality so as to facilitate the storage and transmission of scanned image data.
摘要翻译：公开了一种用于控制扫描图像的工作流程或处理的系统和方法。该系统和方法识别适当的图像处理技术，特别是适合于启用图像压缩但保持图像质量以便于扫描图像数据的存储和传输的技术。

9. 发明授权

US07684588B2 System and method for providing robust information tags to image files 失效
标题翻译：用于向图像文件提供强大的信息标签的系统和方法
公开(公告)号：US07684588B2
公开(公告)日：2010-03-23
申请号：US11471639
申请日：2006-06-21
申请人： Yingjun Bai
发明人： Yingjun Bai
IPC分类号： G06K9/00
CPC分类号： H04N1/32128 , G06F3/1297 , H04N2201/3205 , H04N2201/3242 , H04N2201/3243 , H04N2201/3252 , H04N2201/3277 , H04N2201/3278 , H04N2201/33314 , H04N2201/33328 , H04N2201/33378
摘要： A system that generates an electronically readable image file that represents an image. In one embodiment, the system comprises an image input, an encoding module, and a tag module. The image input obtains color information representative of an image. The encoding module encodes the color information representative of the image into an image file by encoding the color information into a format associated with the image file. The tag module inserts a tag into the image file, wherein the tag is an object to be rendered, and conveys information about the generation of the image file.
摘要翻译：生成表示图像的电子可读图像文件的系统。在一个实施例中，系统包括图像输入，编码模块和标签模块。图像输入获得表示图像的颜色信息。编码模块通过将颜色信息编码成与图像文件相关联的格式来将表示图像的颜色信息编码成图像文件。标签模块将标签插入到图像文件中，其中标签是要呈现的对象，并且传达关于图像文件生成的信息。

10. 发明申请

US20090316213A1 System and method of improving image quality in digital image scanning and printing by reducing noise in output image data 有权
标题翻译：通过降低输出图像数据中的噪声，提高数字图像扫描和打印中的图像质量的系统和方法
公开(公告)号：US20090316213A1
公开(公告)日：2009-12-24
申请号：US12213688
申请日：2008-06-23
申请人： John Christopher Cassidy , Francis Tse , Yingjun Bai
发明人： John Christopher Cassidy , Francis Tse , Yingjun Bai
IPC分类号： G06K15/00 , G06K9/40
CPC分类号： G06K9/40 , G06T5/005 , G06T2207/30176 , H04N1/41
摘要： A system and method of reducing noise in output image data is provided. Grayscale image data having a plurality of pixels is received and processed. During processing, pixels which may produce noise are identified, and a mask associated with the image data is generated. The mask provides information related to the pixels, such as opaque and transparent regions for overlaying the pixels. The image data and the mask are compressed and stored. The mask assists in preventing the identified pixels from being visible when the image data is output, thereby reducing the noise in the image.
摘要翻译：提供了降低输出图像数据中噪声的系统和方法。接收并处理具有多个像素的灰度图像数据。在处理期间，识别可能产生噪声的像素，并且生成与图像数据相关联的掩模。掩模提供与像素相关的信息，例如用于覆盖像素的不透明和透明区域。图像数据和掩码被压缩和存储。当输出图像数据时，掩模有助于防止识别的像素可见，从而减少图像中的噪声。

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