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公开(公告)号：US09942527B2
公开(公告)日：2018-04-10
申请号：US15343425
申请日：2016-11-04
发明人： Marko Mlinar , Brian Keelan
CPC分类号： H04N9/045 , G06K9/46 , G06T3/4015 , G06T5/10 , G06T11/60 , G06T2207/10024 , H04N5/63 , H04N9/67 , H04N9/735 , H04N2209/041
摘要： An image sensor may have an array of image sensor pixels arranged in color filter unit cells each having one red image pixel that generates red image signals, one blue image pixel that generate blue image signals, and two clear image sensor pixels that generate white image signals. The image sensor may be coupled to processing circuitry that performs filtering operations on the red, blue, and white image signals to increase noise correlations in the image signals that reduce noise amplification when applying a color correction matrix to the image signals. The processing circuitry may extract a green image signal from the white image signal. The processing circuitry may compute a scaling value that includes a linear combination of the red, blue, white and green image signals. The scaling value may be applied to the red, blue, and green image signals to produce corrected image signals having improved image quality.
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公开(公告)号：US09712723B2
公开(公告)日：2017-07-18
申请号：US14881452
申请日：2015-10-13
发明人： Johannes Solhusvik , Brian Keelan
IPC分类号： H04N3/14 , H04N5/77 , H04N5/355 , H04N5/3745 , H04N5/235 , H01L27/146 , H04N9/64 , H04N9/04 , H04N5/378 , H04N9/68
CPC分类号： H04N3/155 , H01L27/14609 , H01L27/14643 , H04N5/2355 , H04N5/35572 , H04N5/37452 , H04N5/37455 , H04N5/378 , H04N5/772 , H04N9/045 , H04N9/646 , H04N9/68
摘要： Imaging systems may be provided with stacked-chip image sensors. A stacked-chip image sensor may include a vertical chip stack that includes an array of image pixels, control circuitry and storage and processing circuitry. The image pixel array may be coupled to the control circuitry using vertical metal interconnects. The control circuitry may provide digital image data to the storage and processing circuitry over additional vertical conductive. The stacked-chip image sensor may be configured to capture image frames at a capture frame rate and to output processed image frames at an output frame rate that is lower that the capture frame rate. The storage and processing circuitry may be configured to process image frames concurrently with image capture operations. Processing image frames concurrently with image capture operations may include adjusting the positions of moving objects and by adjusting the pixel brightness values of regions of image frames that have changing brightness.
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公开(公告)号：US09455285B2
公开(公告)日：2016-09-27
申请号：US14614104
申请日：2015-02-04
发明人： Brian Keelan , Marko Mlinar , Douglas Fettig
CPC分类号： H01L27/14605 , H01L27/14607 , H01L27/14621 , H01L27/14627 , H01L27/14643 , H04N5/2257 , H04N5/23212 , H04N5/357 , H04N5/359 , H04N5/3696 , H04N9/045 , H04N9/077 , H04N2209/045
摘要： An image sensor may include an image pixel array with both image pixels to gather image data and phase detection pixels to gather phase information. The phase detection pixels may be arranged in pairs, with two adjacent pixels covered by a single microlens. The phase detection pixel pairs may be arranged in dashed lines, with image pixels interposed between each phase detection pixel pair. There may be only one image pixel interposed between each phase detection pixel pair. The phase detection pixels may all include color filter elements of the same color. The phase detection pixels may all include green color filter elements. The image pixels in the interrupted lines may include color filter elements that match the surrounding color pattern. The image pixels in the interrupted lines may all include color filter elements of the same color.
摘要翻译： 图像传感器可以包括具有两个图像像素的图像像素阵列以收集图像数据和相位检测像素以收集相位信息。 相位检测像素可以成对布置，其中两个相邻像素被单个微透镜覆盖。 相位检测像素对可以以虚线布置，图像像素插入在每个相位检测像素对之间。 在每个相位检测像素对之间可能只有一个图像像素。 相位检测像素都可以包括相同颜色的滤色器元件。 相位检测像素都可以包括绿色滤色器元件。 中断行中的图像像素可以包括与周围颜色图案相匹配的滤色器元件。 中断行中的图像像素都可以包括相同颜色的滤色器元件。
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公开(公告)号：US09224782B2
公开(公告)日：2015-12-29
申请号：US13971712
申请日：2013-08-20
发明人： Brian Keelan
IPC分类号： H04N5/357 , H01L27/146 , H04N9/04 , H04N5/365 , H04N5/367
CPC分类号： H01L27/14685 , H01L27/14621 , H01L27/14623 , H04N5/3572 , H04N5/3651 , H04N5/367 , H04N9/045
摘要： Imaging devices may include processing circuitry, a lens, and an array of image sensor pixels and reference pixels. The array may receive direct image light and stray light from the lens. The image sensor pixels may include clear color filter elements and the reference pixels may include opaque color filter elements. The opaque color filter elements may block direct image light from being captured by the reference pixels. The image sensor pixels may generate pixel values in response to the direct image light and the stray light whereas the reference pixels may generate reference pixel values in response to the stray light. The processing circuitry may mitigate stray light effects such as local flare and veiling glare within the imaging system by adjusting the pixel values based on the reference pixel values. The imaging system may be calibrated in a calibration system for generating stray light calibration data.
摘要翻译： 成像设备可以包括处理电路，透镜和图像传感器像素和参考像素的阵列。 该阵列可以接收来自透镜的直接图像光和杂散光。 图像传感器像素可以包括清晰的滤色器元件，并且参考像素可以包括不透明滤色器元件。 不透明滤色器元件可以阻止直接图像光被参考像素捕获。 图像传感器像素可以响应于直接图像光和杂散光而产生像素值，而参考像素可以响应于杂散光而生成参考像素值。 处理电路可以通过基于参考像素值调整像素值来减轻成像系统内的杂散光效应，例如局部耀斑和遮光眩光。 成像系统可以在用于产生杂散光校准数据的校准系统中校准。
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公开(公告)号：US09191635B2
公开(公告)日：2015-11-17
申请号：US13736768
申请日：2013-01-08
发明人： Marko Mlinar , Brian Keelan
CPC分类号： H04N9/045 , G06K9/46 , G06T3/4015 , G06T5/10 , G06T11/60 , G06T2207/10024 , H04N5/63 , H04N9/67 , H04N9/735 , H04N2209/041
摘要： An image sensor may have an array of image sensor pixels arranged in color filter unit cells each having one red image pixel that generates red image signals, one blue image pixel that generate blue image signals, and two clear image sensor pixels that generate white image signals. The image sensor may be coupled to processing circuitry that performs filtering operations on the red, blue, and white image signals to increase noise correlations in the image signals that reduce noise amplification when applying a color correction matrix to the image signals. The processing circuitry may extract a green image signal from the white image signal. The processing circuitry may compute a scaling value that includes a linear combination of the red, blue, white and green image signals. The scaling value may be applied to the red, blue, and green image signals to produce corrected image signals having improved image quality.
摘要翻译： 图像传感器可以具有布置在滤色器单元单元中的图像传感器像素的阵列，每个具有产生红色图像信号的一个红色图像像素，产生蓝色图像信号的一个蓝色图像像素和产生白色图像信号的两个清晰图像传感器像素 。 图像传感器可以耦合到对红色，蓝色和白色图像信号执行滤波操作的处理电路，以增加当将颜色校正矩阵应用于图像信号时降低噪声放大的图像信号中的噪声相关性。 处理电路可以从白色图像信号中提取绿色图像信号。 处理电路可以计算包括红色，蓝色，白色和绿色图像信号的线性组合的缩放值。 缩放值可以应用于红色，蓝色和绿色图像信号，以产生具有改善的图像质量的校正图像信号。
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公开(公告)号：US09793306B2
公开(公告)日：2017-10-17
申请号：US14681250
申请日：2015-04-08
发明人： Brian Keelan , Marko Mlinar
IPC分类号： H01L27/00 , H01L27/146
CPC分类号： H01L27/1461 , H01L27/14621 , H01L27/14645 , H01L27/14647 , H01L27/14649 , H01L27/14652
摘要： An imaging system may include an image sensor having pixels with stacked photodiodes in which a first photodiode generates a first image signal in response to light of a first wavelength and a second photodiode generates a second image signal in response to light of a second wavelength. The imaging system may include processing circuitry that applies a color correction matrix to isolate components of the first and second signals that are generated in response to light of the first and second wavelengths while removing components of the first and second signals that are generated in response to light of other wavelengths. The processing circuitry may increase noise correlations between the signals to mitigate noise amplification generated by the color correction matrix. The processing circuitry may apply a point filter to increase luma fidelity of the signals.
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公开(公告)号：US20160300870A1
公开(公告)日：2016-10-13
申请号：US14681250
申请日：2015-04-08
发明人： Brian Keelan , Marko MLINAR
IPC分类号： H01L27/146
CPC分类号： H01L27/1461 , H01L27/14621 , H01L27/14645 , H01L27/14647 , H01L27/14649 , H01L27/14652
摘要： An imaging system may include an image sensor having pixels with stacked photodiodes in which a first photodiode generates a first image signal in response to light of a first wavelength and a second photodiode generates a second image signal in response to light of a second wavelength. The imaging system may include processing circuitry that applies a color correction matrix to isolate components of the first and second signals that are generated in response to light of the first and second wavelengths while removing components of the first and second signals that are generated in response to light of other wavelengths. The processing circuitry may increase noise correlations between the signals to mitigate noise amplification generated by the color correction matrix. The processing circuitry may apply a point filter to increase luma fidelity of the signals.
摘要翻译： 成像系统可以包括具有层叠光电二极管的像素的图像传感器，其中第一光电二极管响应于第一波长的光而产生第一图像信号，并且第二光电二极管响应于第二波长的光而产生第二图像信号。 成像系统可以包括处理电路，该处理电路应用颜色校正矩阵来隔离响应于第一和第二波长的光而产生的第一和第二信号的分量，同时移除响应于第一和第二波长而产生的第一和第二信号的分量 其他波长的光。 处理电路可以增加信号之间的噪声相关性，以减轻由颜色校正矩阵产生的噪声放大。 处理电路可以应用点滤波器来增加信号的亮度保真度。
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公开(公告)号：US09350914B1
公开(公告)日：2016-05-24
申请号：US14620030
申请日：2015-02-11
发明人： Balwinder Kaur , Brian Keelan , Richard Mauritzson , Marko Mlinar
CPC分类号： H04N5/23229 , G06K9/00228 , G06K9/00771 , G06K9/00791 , G06K9/3258 , G06K9/62 , G06K2209/15 , G06T5/002 , G06T2207/10004 , G06T2207/20172 , G06T2207/30204 , G06T2207/30232
摘要： An imaging system may capture image data and use the captured image data to detect a privacy request. Depending on the specific privacy request, the imaging system may delete or blur the captured image to comply with the detected privacy request. The imaging system may use face recognition software and only blur faces that are present in the captured image, leaving the rest of the image unobscured. The imaging system may only comply with the privacy request if the imaging system is in a predetermined area or within a predetermined distance of a privacy seeking external device. The imaging system may be disabled if the system enters a geo-fenced area that restricts the capture of images. The imaging system may recognize a given temporal pattern of light as a privacy request and modify any captured images accordingly.
摘要翻译： 成像系统可以捕获图像数据并使用所捕获的图像数据来检测隐私请求。 根据具体的隐私请求，成像系统可以删除或模糊所捕获的图像以符合检测到的隐私请求。 成像系统可以使用面部识别软件，并且仅仅存在于拍摄图像中的模糊面部，留下图像的其余部分。 如果成像系统处于预定区域或隐私寻求外部设备的预定距离内，成像系统可能仅符合隐私请求。 如果系统进入限制图像捕获的地理围栏区域，成像系统可能会被禁用。 成像系统可以将给定的时间模式识别为隐私请求，并且相应地修改所捕获的图像。
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公开(公告)号：US10136107B2
公开(公告)日：2018-11-20
申请号：US14086705
申请日：2013-11-21
发明人： Brian Keelan , Marko Mlinar
摘要： An image sensor may have an array of image pixels arranged in color filter unit cells that each have at least one red image pixel that generates red image signals, at least one blue image pixel that generate blue image signals, at least one clear image pixels that generate clear image signals, at least one infrared image pixel that generates infrared image signals, and optionally at least one green image pixel that generates green image signals. The image sensor may be coupled to processing circuitry that performs chroma demosaicking operations on the image signals. The processing circuitry may generate an infrared image using the infrared image signals and a luminance value using the clear, red, blue, and infrared image signals. The processing circuitry may perform point filter operations on the image signals based on the generated luminance value to produce corrected visible light image signals having improved image quality.
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公开(公告)号：US09521380B2
公开(公告)日：2016-12-13
申请号：US14871520
申请日：2015-09-30
发明人： Marko Mlinar , Brian Keelan
CPC分类号： H04N9/045 , G06K9/46 , G06T3/4015 , G06T5/10 , G06T11/60 , G06T2207/10024 , H04N5/63 , H04N9/67 , H04N9/735 , H04N2209/041
摘要： An image sensor may have an array of image sensor pixels arranged in color filter unit cells each having one red image pixel that generates red image signals, one blue image pixel that generate blue image signals, and two clear image sensor pixels that generate white image signals. The image sensor may be coupled to processing circuitry that performs filtering operations on the red, blue, and white image signals to increase noise correlations in the image signals that reduce noise amplification when applying a color correction matrix to the image signals. The processing circuitry may extract a green image signal from the white image signal. The processing circuitry may compute a scaling value that includes a linear combination of the red, blue, white and green image signals. The scaling value may be applied to the red, blue, and green image signals to produce corrected image signals having improved image quality.
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