公开(公告)号：US07551795B2

公开(公告)日：2009-06-23

申请号：US11264973

申请日：2005-11-01

Applicant: Ning Xu ,  Yeong-Taeg Kim

Inventor： Ning Xu ,  Yeong-Taeg Kim

IPC: G06K9/40

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/14 ,  H04N19/17 ,  H04N19/176 ,  H04N19/182

Abstract: An image processing method and system removes quantization artifacts in digital video/images. The local neighborhood of the current pixel is segmented based on a pre-defined quantization level to generate a segment containing the current pixel. Then, the luminance values of the pixels within the segment are low-pass filtered. Several sub-gains are computed based on measurements of the segment, and the sub-gains are multiplied together and filtered to obtain a final gain value. The final gain value is used to linearly interpolate between the original luminance value and the filtered luminance value of the pixel to obtain an output luminance value.

Abstract translation: 图像处理方法和系统消除数字视频/图像中的量化伪像。 基于预定义的量化级别对当前像素的局部邻域进行分段，以生成包含当前像素的段。 然后，片段内的像素的亮度值被低通滤波。 基于段的测量来计算几个子增益，并将子增益相乘并过滤以获得最终增益值。 最终增益值用于在原始亮度值和滤波后的像素亮度值之间线性插值，以获得输出亮度值。

公开(公告)号：US07420570B2

公开(公告)日：2008-09-02

申请号：US11106812

申请日：2005-04-14

Applicant: Ning Xu ,  Yeong-Taeg Kim

Inventor： Ning Xu ,  Yeong-Taeg Kim

IPC: G06K9/00 ,  G09G5/10 ,  H04N5/66 ,  H04N7/26 ,  H04B1/66 ,  H04N7/32 ,  G09G5/28

CPC classification number: G09G3/2051

Abstract: A super dithering method of color video quantization maintains the perceived video quality on a display with less bit depth of color than the input video. Super dithering relies on both the spatial and temporal properties of human visual system, wherein spatial dithering is applied to account for human eye's low pass spatial property, while temporal dithering is applied to achieve the quantization level of the spatial dithering.

Abstract translation: 彩色视频量化的超抖动方法在显示器上保持感知视频质量，比输入视频具有更少的位深度的颜色。 超级抖动依赖于人类视觉系统的空间和时间属性，其中应用空间抖动来考虑人眼的低通空间特性，同时应用时间抖动来实现空间抖动的量化水平。

公开(公告)号：US20080204600A1

公开(公告)日：2008-08-28

申请号：US11710594

申请日：2007-02-23

Applicant: Ning Xu ,  Yeong-Taeg Kim

Inventor： Ning Xu ,  Yeong-Taeg Kim

IPC: H04N5/00

CPC classification number: H04N5/144 ,  H04N5/21

Abstract: An adaptive temporal noise reduction method that adaptively combines motion adaptive filtering results and motion compensated results to reduce Gaussian additive noise in video sequences is described herein. The system determines the motion detection and motion compensation results from the current frame and the filtered previous frame. Measurements on the video are used to determine a probabilistic measure of noise that is employed to adaptively combine the motion detection and motion compensation results.

Abstract translation: 本文描述了自适应地组合运动自适应滤波结果和运动补偿结果以减少视频序列中的高斯加性噪声的自适应时间噪声降低方法。 该系统从当前帧和经过滤的前一帧确定运动检测和运动补偿结果。 视频测量用于确定用于自适应地组合运动检测和运动补偿结果的噪声概率测量。

公开(公告)号：US07298379B2

公开(公告)日：2007-11-20

申请号：US11056372

申请日：2005-02-10

Applicant: Ning Xu ,  Yeong-Taeg Kim

Inventor： Ning Xu ,  Yeong-Taeg Kim

IPC: G06K9/00 ,  G06K9/38 ,  G09G5/02

CPC classification number: H04N9/67

Abstract: This invention presents a YUV to RGB conversion method which preserves high precision of luminance information in an original YUV image signal when converting it to RGB signal. The method can be used to convert the original YUV signal to arbitrary quantization levels in RGB space. In addition, this invention presents methods of pre-quantization and re-quantization as to compensate conventional YUV to RGB color conversion.

Abstract translation: 本发明提出了一种YUV至RGB转换方法，当将其转换为RGB信号时，其保持原始YUV图像信号中的亮度信息的高精度。 该方法可用于将原始YUV信号转换为RGB空间中的任意量化级别。 此外，本发明提出了用于补偿常规YUV到RGB颜色转换的预量化和重新量化的方法。

公开(公告)号：US20070127819A1

公开(公告)日：2007-06-07

申请号：US11398103

申请日：2006-04-04

Applicant: Sangkeun Lee ,  Ning Xu ,  Yeong-Taeg Kim

Inventor： Sangkeun Lee ,  Ning Xu ,  Yeong-Taeg Kim

IPC: G06K9/46 ,  G06K9/66 ,  G06K9/00 ,  G06K9/68

CPC classification number: G06K9/00711 ,  G06F17/3079 ,  G06T7/20

Abstract: A method and apparatus for detecting and locating objects of interest in video sequences is provided. A frame is defined as an image belonging to video sequences. Each frame with the same or different size of original input sequences is searched by the same or different size window efficiently for detecting objects. The characteristics of temporal redundancies in video sequences are used in detecting objects in video sequences.

Abstract translation: 提供了一种用于检测和定位视频序列中的感兴趣对象的方法和装置。 帧被定义为属于视频序列的图像。 具有相同或不同大小的原始输入序列的每个帧通过相同或不同的大小窗口被有效地搜索以用于检测对象。 视频序列中的时间冗余的特征用于检测视频序列中的对象。

公开(公告)号：US20070126884A1

公开(公告)日：2007-06-07

申请号：US11448961

申请日：2006-06-06

Applicant: Ning Xu ,  Sangkeun Lee ,  Yeong-Taeg Kim

Inventor： Ning Xu ,  Sangkeun Lee ,  Yeong-Taeg Kim

IPC: H04H9/00 ,  H04N5/225

CPC classification number: H04H60/45 ,  G06K9/00221 ,  H04N5/44 ,  H04N5/63 ,  H04N7/163 ,  H04N21/4223 ,  H04N21/433 ,  H04N21/44008 ,  H04N21/4415 ,  H04N21/4532 ,  Y02D70/168

Abstract: A digital system is provided that combines a digital video camera with television displays, and controlled by a controller module to enhance television performance according to personal television settings, parental controls and energy saving functions, achieved by utilizing the camera and face detection/recognition methods implemented in the controller module.

Abstract translation: 提供一种数字系统，其将数字摄像机与电视显示器组合，并且由控制器模块控制，以根据个人电视设置，家长控制和节能功能来提高电视性能，通过利用相机和面部检测/识别方法实现 在控制器模块中。

公开(公告)号：US20070098294A1

公开(公告)日：2007-05-03

申请号：US11264973

申请日：2005-11-01

Applicant: Ning Xu ,  Yeong-Taeg Kim

Inventor： Ning Xu ,  Yeong-Taeg Kim

IPC: G06K9/40

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/14 ,  H04N19/17 ,  H04N19/176 ,  H04N19/182

Abstract: An image processing method and system removes quantization artifacts in digital video/images. The local neighborhood of the current pixel is segmented based on a pre-defined quantization level to generate a segment containing the current pixel. Then, the luminance values of the pixels within the segment are low-pass filtered. Several sub-gains are computed based on measurements of the segment, and the sub-gains are multiplied together and filtered to obtain a final gain value. The final gain value is used to linearly interpolate between the original luminance value and the filtered luminance value of the pixel to obtain an output luminance value.

Abstract translation: 图像处理方法和系统消除数字视频/图像中的量化伪像。 基于预定义的量化级别对当前像素的局部邻域进行分段，以生成包含当前像素的段。 然后，片段内的像素的亮度值被低通滤波。 基于段的测量来计算几个子增益，并将子增益相乘并过滤以获得最终增益值。 最终增益值用于在原始亮度值和滤波后的像素亮度值之间线性插值，以获得输出亮度值。

公开(公告)号：US06882743B2

公开(公告)日：2005-04-19

申请号：US09998768

申请日：2001-11-29

Applicant: Ravi Bansal ,  Ning Xu

Inventor： Ravi Bansal ,  Ning Xu

IPC: G06T5/00 ,  G06K9/00

CPC classification number: G06T7/0012 ,  G06T7/12 ,  G06T7/143 ,  G06T7/149 ,  G06T2207/10081 ,  G06T2207/20101 ,  G06T2207/30064

Abstract: There is provided a method for automatically segmenting lung nodules in a three-dimensional (3D) Computed Tomography (CT) volume dataset. An input is received corresponding to a user-selected point near a boundary of a nodule. A model is constructed of the nodule from the user-selected point, the model being a deformable circle having a set of parameters β that represent a shape of the nodule. Continuous parts of the boundary and discontinuities of the boundary are estimated until the set of parameters β converges, using dynamic programming and Expectation Maximization (EM). The nodule is segmented, based on estimates of the continuous parts of the boundary and the discontinuities of the boundary.

Abstract translation: 提供了一种在三维（3D）计算机断层扫描（CT）体积数据集中自动分割肺结节的方法。 接收对应于结节边界附近的用户选择点的输入。 模型由用户选择的点的结节构成，模型是具有代表结节形状的一组参数β的可变形圆。 边界的连续部分和边界的不连续性被估计，直到参数集合β收敛，使用动态规划和期望最大化（EM）。 根据边界的连续部分和边界的不连续性的估计，结节被分割。

公开(公告)号：US20170221272A1

公开(公告)日：2017-08-03

申请号：US15010847

申请日：2016-01-29

Applicant: Jia Li ,  Linjie Luo ,  Rahul Sheth ,  Ning Xu ,  Jianchao Yang

Inventor： Jia Li ,  Linjie Luo ,  Rahul Sheth ,  Ning Xu ,  Jianchao Yang

IPC: G06T19/20 ,  G06T7/20 ,  H04L12/58 ,  G06T19/00

CPC classification number: G06T19/20 ,  G06T7/204 ,  G06T7/248 ,  G06T19/006 ,  G06T2207/20104 ,  H04L51/32

Abstract: Systems and methods for local augmented reality (AR) tracking of an AR object are disclosed. In one example embodiment a device captures a series of video image frames. A user input is received at the device associating a first portion of a first image of the video image frames with an AR sticker object and a target. A first target template is generated to track the target across frames of the video image frames. In some embodiments, global tracking based on a determination that the target is outside a boundary area is used. The global tracking comprises using a global tracking template for tracking movement in the video image frames captured following the determination that the target is outside the boundary area. When the global tracking determines that the target is within the boundary area, local tracking is resumed along with presentation of the AR sticker object on an output display of the device.

公开(公告)号：US20130113310A1

公开(公告)日：2013-05-09

申请号：US13811247

申请日：2011-09-26

Applicant: Ning Xu

Inventor： Ning Xu

IPC: H02K9/04

CPC classification number: H02K9/04 ,  B02C18/0007 ,  B02C18/16 ,  B02C2018/0046 ,  H02K5/20 ,  H02K7/116 ,  H02K7/14 ,  H02K9/26

Abstract: Provided is a paper shredder comprising a housing (6) and a paper shredder head (4), wherein a transmission mechanism (5) and a motor are provided in the paper shredder head (4); the motor comprises a motor body (1), the motor body (1) having an output shaft (12) and a motor housing (11) sleeve connected on the output shaft (12); the motor housing (11) is provided with a heat dissipation device, the heat dissipation device comprising an air intake device (2) and an air output device (3); the air intake device (2) has a cold air inlet and the air output device (3) has a hot air outlet; the air intake device (2) is provided on one side of the output shaft (12) and the air output device (3) is provided on the other side of the output shaft (12); at the position where the air intake device (2) is provided on the motor housing (11) there is an air intake hole (13) opened correspondingly to communicate with an inner chamber of the motor housing (11), and at the position where the air output device (3) is provided on the motor housing (11) there is an air output hole (14) opened correspondingly to communicate with the inner chamber of the motor housing (11), such that a relatively isolated and independent heat dissipating air channel is formed internally from the cold air inlet, via the inner chamber of the motor housing (11), to the hot air outlet.

Abstract translation: 提供了一种包括壳体（6）和碎纸头（4）的碎纸机，其中传动机构（5）和马达设置在碎纸机头（4）中; 所述马达包括马达主体（1），所述马达主体（1）具有输出轴（12）和连接在输出轴（12）上的马达壳体11）。 电动机壳体（11）设置有散热装置，散热装置包括进气装置（2）和空气输出装置（3）; 进气装置（2）具有冷空气入口，空气输出装置（3）具有热空气出口; 进气装置（2）设置在输出轴（12）的一侧，空气输出装置（3）设置在输出轴（12）的另一侧。 在进气装置（2）设置在电动机壳体（11）上的位置处，具有对应于与电动机壳体（11）的内部室连通的吸气孔（13），并且位于 空气输出装置（3）设置在电动机壳体（11）上，具有对应于与电动机壳体（11）的内室连通的空气输出孔（14），使得相对隔离且独立的散热 空气通道从冷空气入口内部经由马达壳体（11）的内腔形成到热空气出口。