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公开(公告)号：US09092856B2
公开(公告)日：2015-07-28
申请号：US14068656
申请日：2013-10-31
Applicant: STMicroelectronics Asia Pacific Pte. Ltd.
Inventor： Xiaoyun Deng , Lucas Hui
CPC classification number: G06T5/002 , G06T5/20 , G06T2207/10016 , G06T2207/20012
Abstract: A method and apparatus are provided for filtering banding noise in a signal representative of an image. The method includes detecting, by a banding noise detector, banding noise in a neighborhood of a current pixel of the image, determining, by an adaptive filter weight decision unit, a number of banding steps in the neighborhood of the current pixel, determining, by the adaptive filter weight decision unit, a difference between a current pixel value and a previous output value, selecting, by the adaptive filter weight decision unit, a filter weight based on the number of banding steps, the difference between the current pixel value and the previous output value, and the detected banding noise, and filtering, by a recursive filter, the current pixel value according to the selected filter weight.
Abstract translation: 提供了一种方法和装置，用于对代表图像的信号中的条带噪声进行滤波。 该方法包括通过带状噪声检测器检测图像的当前像素附近的条带噪声，通过自适应滤波器权重判定单元确定当前像素附近的条带步数，通过 自适应滤波器权重判定单元，当前像素值和先前输出值之间的差，由自适应滤波器权重判定单元选择基于条带数的滤波器权重，当前像素值与 先前输出值和检测到的条带噪声，并且通过递归滤波器根据所选滤波器权重对当前像素值进行滤波。
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公开(公告)号：US09609312B2
公开(公告)日：2017-03-28
申请号：US13723584
申请日：2012-12-21
Applicant: STMicroelectronics Asia Pacific Pte. Ltd.
Inventor： Lucas Hui
CPC classification number: H04N13/334 , H04N13/106
Abstract: Ghosting of images can be produced by the use anaglyph techniques to produce stereoscopic images. Ghost effects can be produced when filtering is applied to images by displays such as televisions or monitors. Techniques and apparatus are described for reducing or cancelling ghost effects. Anaglyph ghost reduction information can be produced to reduce or cancel ghost effects.
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公开(公告)号：US09241153B2
公开(公告)日：2016-01-19
申请号：US13856342
申请日：2013-04-03
Applicant: STMicroelectronics Asia Pacific Pte. Ltd.
Inventor： Lucas Hui
CPC classification number: H04N13/334 , G06T5/008 , G06T5/50 , G06T2207/10021 , G06T2207/10024 , H04N13/122 , H04N13/133
Abstract: A system adjusts contrast of an anaglyph image and includes a contrast adjuster processor that generates a contrast-adjusted first luma signal and second luma signal and a contrast-adjusted third luma signal from a first input image signal and second input image signal. An upstream summing node determines a first difference between the first luma signal and third luma signal and a downstream summing node subtracts the first difference from the first signal component of the first input signal. A fine adjuster circuit receives a signal for the first difference and applies a fine adjustment as a gain adjustment, an offset adjustment, and a horizontal and vertical shift.
Abstract translation: 系统调整浮雕图像的对比度，并且包括对比度调节器处理器，其从第一输入图像信号和第二输入图像信号产生对比度调整的第一亮度信号和第二亮度信号以及对比度调整的第三亮度信号。 上游求和节点确定第一亮度信号和第三亮度信号之间的第一差值，下游求和节点从第一输入信号的第一信号分量中减去第一差值。 精细调节器电路接收第一差分的信号，并且作为增益调整，偏移调整以及水平和垂直移位进行微调。
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公开(公告)号：US20150117793A1
公开(公告)日：2015-04-30
申请号：US14068656
申请日：2013-10-31
Applicant: STMicroelectronics Asia Pacific Pte. Ltd.
Inventor： Xiaoyun Deng , Lucas Hui
IPC: G06T5/00
CPC classification number: G06T5/002 , G06T5/20 , G06T2207/10016 , G06T2207/20012
Abstract: A method and apparatus are provided for filtering banding noise in a signal representative of an image. The method includes detecting, by a banding noise detector, banding noise in a neighborhood of a current pixel of the image, determining, by an adaptive filter weight decision unit, a number of banding steps in the neighborhood of the current pixel, determining, by the adaptive filter weight decision unit, a difference between a current pixel value and a previous output value, selecting, by the adaptive filter weight decision unit, a filter weight based on the number of banding steps, the difference between the current pixel value and the previous output value, and the detected banding noise, and filtering, by a recursive filter, the current pixel value according to the selected filter weight.
Abstract translation: 提供了一种方法和装置，用于对代表图像的信号中的条带噪声进行滤波。 该方法包括通过带状噪声检测器检测图像的当前像素附近的条带噪声，通过自适应滤波器权重判定单元确定当前像素附近的条带步数，通过 自适应滤波器权重判定单元，当前像素值和先前输出值之间的差，由自适应滤波器权重判定单元选择基于条带数的滤波器权重，当前像素值与 先前输出值和检测到的条带噪声，并且通过递归滤波器根据所选滤波器权重对当前像素值进行滤波。
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公开(公告)号：US10043251B2
公开(公告)日：2018-08-07
申请号：US14969255
申请日：2015-12-15
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Yong Huang , Lucas Hui
IPC: G06T5/00 , G06T5/20 , G09G5/02 , G09G5/10 , H04N5/20 , H04N5/202 , H04N5/57 , H04N5/76 , H04N9/68 , H04N9/77 , H04N11/24 , H04N5/14
Abstract: Various embodiments provide tone mapping of images and video from one dynamic range to an available dynamic range of a display device while preserving or enhancing image details. According to one embodiment, an enhanced tone mapping module is configured to decrease a luminance of an image or video from a high dynamic range to a standard dynamic range. Conversely, according to one embodiment, an enhanced inverse tone mapper to increase a luminance of an image or video from a standard dynamic range to a high dynamic range.
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Patent Agency Ranking
公开(公告)号：US20150117782A1
公开(公告)日：2015-04-30
申请号：US14069181
申请日：2013-10-31
Applicant: STMicroelectronics Asia Pacific Pte. Ltd.
Inventor： Xiaoyun Deng , Lucas Hui
CPC classification number: G06K9/40 , G06T5/002 , G06T2207/10024 , G06T2207/20012
Abstract: A method and apparatus are provided for detecting banding noise in a digital signal representative of an image. The method includes determining, by a banding noise detector, a count of increment steps in pixel values and a count of decrement steps in pixel values along a filter direction in a neighborhood of a current pixel of the image, checking, by the banding noise detector, if the count of increment steps or the count of decrement steps in the neighborhood of a current pixel exceeds a step threshold value, and classifying, by the banding noise detector, the current pixel as being located in the banding noise zone if the count of increment steps or the count of decrement steps does not exceed the step threshold value.
Abstract translation: 提供了一种用于检测表示图像的数字信号中的条带噪声的方法和装置。 该方法包括通过条带噪声检测器确定像素值中的增量步长的计数和沿图像的当前像素附近的滤波器方向的像素值中的递减步长的计数，由带状噪声检测器 如果当前像素附近的递增步数或递减步数的计数超过阶梯阈值，并且由带状噪声检测器将当前像素分类为位于条带噪声区中，如果计数 递增步骤或递减步数的计数不超过阶梯阈值。
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公开(公告)号：US20140176687A1
公开(公告)日：2014-06-26
申请号：US13723584
申请日：2012-12-21
Applicant: STMICROELECTRONICS ASIA PACIFIC PTE. LTD.
Inventor： Lucas Hui
IPC: H04N13/04
CPC classification number: H04N13/334 , H04N13/106
Abstract: Ghosting of images can be produced by the use anaglyph techniques to produce stereoscopic images. Ghost effects can be produced when filtering is applied to images by displays such as televisions or monitors. Techniques and apparatus are described for reducing or cancelling ghost effects. Anaglyph ghost reduction information can be produced to reduce or cancel ghost effects.
Abstract translation: 可以通过使用浮雕技术来产生图像的重影以产生立体图像。 当通过诸如电视机或显示器的显示器对图像进行滤波时，可以产生鬼影响。 描述了减少或取消鬼影响的技术和装置。 可以产生浮雕减魂信息，以减少或取消鬼影响。
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公开(公告)号：US09392213B1
公开(公告)日：2016-07-12
申请号：US14814231
申请日：2015-07-30
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Guillaume Militello , Lucas Hui
IPC: H04N7/01
CPC classification number: H04N7/012
Abstract: A video de-interlacing device includes a video data input interface to receive a stream of interlaced video data, a motion detector coupled to the video data input interface to produce motion detection video data, and a video data output interface to pass de-interlaced video data generated from the motion detection video data. The video de-interlacing device also includes a recursive motion processor to detect a still motion condition in at least one area of the motion detection video data. The recursive motion processor includes a local still detector, a large area motion detector, and a feathering detector. The recursive motion processor is arranged to produce motion information used to crop the motion detection video data based on the detected still motion condition.
Abstract translation: 视频去隔行装置包括用于接收隔行视频数据流的视频数据输入接口，耦合到视频数据输入接口以产生运动检测视频数据的运动检测器，以及用于传递去隔行视频的视频数据输出接口 从运动检测视频数据生成的数据。 视频去隔行装置还包括递归运动处理器，用于检测运动检测视频数据的至少一个区域中的静止运动状况。 递归运动处理器包括本地静止检测器，大面积运动检测器和羽化检测器。 递归运动处理器被布置成基于检测到的静止运动条件产生用于裁剪运动检测视频数据的运动信息。
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公开(公告)号：US09183453B2
公开(公告)日：2015-11-10
申请号：US14069181
申请日：2013-10-31
Applicant: STMicroelectronics Asia Pacific Pte. Ltd.
Inventor： Xiaoyun Deng , Lucas Hui
CPC classification number: G06K9/40 , G06T5/002 , G06T2207/10024 , G06T2207/20012
Abstract: A method and apparatus are provided for detecting banding noise in a digital signal representative of an image. The method includes determining, by a banding noise detector, a count of increment steps in pixel values and a count of decrement steps in pixel values along a filter direction in a neighborhood of a current pixel of the image, checking, by the banding noise detector, if the count of increment steps or the count of decrement steps in the neighborhood of a current pixel exceeds a step threshold value, and classifying, by the banding noise detector, the current pixel as being located in the banding noise zone if the count of increment steps or the count of decrement steps does not exceed the step threshold value.
Abstract translation: 提供了一种用于检测表示图像的数字信号中的条带噪声的方法和装置。 该方法包括通过条带噪声检测器确定像素值中的增量步长的计数和沿图像的当前像素附近的滤波器方向的像素值中的递减步长的计数，由带状噪声检测器 如果当前像素附近的递增步数或递减步数的计数超过阶梯阈值，并且由带状噪声检测器将当前像素分类为位于条带噪声区中，如果计数 递增步骤或递减步数的计数不超过阶梯阈值。
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公开(公告)号：US09135720B2
公开(公告)日：2015-09-15
申请号：US13851807
申请日：2013-03-27
Applicant: STMicroelectronics Asia Pacific PTE, Ltd.
Inventor： Yong Huang , Lucas Hui
CPC classification number: G06T7/602 , G06T7/62 , G06T2207/10016 , G06T2207/20052 , G06T2207/20056 , H04N5/2628 , H04N7/0122 , H04N21/234372
Abstract: A system for determining an aspect ratio of image content based on an analysis of the content. In an embodiment, an analyzer is configured to receive a data input corresponding to an image in a stream of images that constitute a video sequence of images. The analyzer is further configured to determine a mathematical representation of the image content based on a power spectrum analysis of vertical components of the image in comparison to a power spectrum analysis of horizontal components of the image. Based on this comparison of the vertical frequency components to the horizontal frequency components, a determination about the original aspect ratio of the image may be determined. This determination may be used by a video processor to correctly apply aspect ratio conversion for final image output.
Abstract translation: 一种用于基于内容的分析来确定图像内容的宽高比的系统。 在一个实施例中，分析器被配置为接收对应于构成图像的视频序列的图像流中的图像的数据输入。 分析器还被配置为与图像的水平分量的功率谱分析相比，基于图像的垂直分量的功率谱分析来确定图像内容的数学表示。 基于垂直频率分量与水平频率分量的比较，可以确定关于图像的原始纵横比的确定。 视频处理器可以使用该确定来正确应用最终图像输出的宽高比转换。
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