公开(公告)号：US20020171770A1

公开(公告)日：2002-11-21

申请号：US10110300

申请日：2002-04-10

Inventor： Matthias Wendt ,  Gerwik Hoflich

IPC: H04N005/14 ,  H04N009/64 ,  H04N003/24

CPC classification number: H04N21/478 ,  H04N5/44513 ,  H04N21/4223 ,  H04N21/44218 ,  H04N21/4622

Abstract: The invention relates to a television set which offers additional functions. For this purpose the television set has a screen saver.

Abstract translation: 本发明涉及提供附加功能的电视机。 为此，电视机有一个屏幕保护程序。

公开(公告)号：US20020126224A1

公开(公告)日：2002-09-12

申请号：US09752261

申请日：2000-12-28

Inventor： Rainer Lienhart

IPC: H04N005/14

CPC classification number: H04N5/147

Abstract: A method and apparatus to detect transition effects are described. A method comprises deriving at least one frame-based video stream, each video stream forms a time series scaled to form a temporal time series pyramid. A fixed-size window slides over the time series. Each fixed-sized time series window is analyzed by a transition detector which determines the probability of a transition effect existing within the window. The time series of transition probabilities are rescaled to the original temporal scale of the video under analysis and integrated into a final transition detection results. Each transition detector is trained by a transition synthesizer to detect transition effects.

Abstract translation: 描述了检测过渡效应的方法和装置。 一种方法包括导出至少一个基于帧的视频流，每个视频流形成被缩放以形成时间时间序列金字塔的时间序列。 一个固定大小的窗口滑过时间序列。 每个固定大小的时间序列窗口由转移检测器分析，该转换检测器确定窗口内存在的过渡效应的概率。 转移概率的时间序列被重新定标到被分析的视频的原始时间尺度，并被集成到最终的转换检测结果中。 每个转换检测器由过渡合成器训练以检测过渡效应。

公开(公告)号：US20020118868A1

公开(公告)日：2002-08-29

申请号：US09960475

申请日：2001-09-24

Inventor： Toshifumi Okada

IPC: H04N005/14 ,  H04N009/64 ,  G06K009/00

CPC classification number: G06T7/0012 ,  A61B5/1128 ,  A61B6/5235 ,  G06T2207/30004

Abstract: A differential image for detecting a shape change between one input image and another input image is corrected by setting reference areas which are deemed to have no shape change to the one and another input images In1(x,y) and In2(x,y), respectively, operating average values ave1 and ave2 of pixel values of the reference areas in a reference area average value operating unit, and producing a differential image S(x,y) in accordance with an equation of S(x,y)nullIn1(x,y)nullIn2(x,y)null(ave1nullave2) in a differential image producing unit. Such differential image is displayed with an offset value being applied.

Abstract translation: 用于检测一个输入图像和另一个输入图像之间的形状变化的差分图像通过将被认为没有形状变化的参考区域设置为一个和另一个输入图像In1（x，y）和In2（x，y）来校正， 分别在参考区域平均值操作单元中分别参考区域平均值操作单元的参考区域的像素值的操作平均值ave1和ave2，并且根据S（x，y）= In1的等式生成差分图像S（x，y） （x，y）-In2（x，y） - （ave1-ave2）。 显示这样的差分图像，并应用偏移值。

公开(公告)号：US20020113902A1

公开(公告)日：2002-08-22

申请号：US10011442

申请日：2001-12-11

Applicant: LG Electronics Inc.

Inventor： Yeong An Jeong

IPC: H04N005/14 ,  H04N009/64

CPC classification number: H04N19/51 ,  H04N5/145

Abstract: An apparatus for optimizing of motion estimation in moving picture coding comprises a macro block comparing unit for being inputted a previous video signal and a present video signal and comparing the signals as macro block unit, a pixel modularizing unit for modularizing the compared block as a plurality of pixels unit, and an SAD (Sum of the Absolute Difference) calculator for being inputted modularized plurality of pixels and calculating the most similar previous signal, and a method for optimizing of motion estimation in moving picture coding comprises a step of modularizing searching pixels included in a macro block of NnullN size as a plurality of pixels unit and a step of performing the SAD calculation using the modularized searching pixels, in order to increase processing speed and minimize a lowering of picture quality by deciding a searching area as selecting some of pixel modules which include four pixels respectively using a certain rule and reducing the SAD calculation amount.

Abstract translation: 用于优化运动图像编码中的运动估计的装置包括：宏块比较单元，用于输入先前视频信号和当前视频信号，并将该信号作为宏块单元进行比较;像素模块化单元，用于将比较的块模块化为多个 和SAD（绝对差值之和）计算器，用于输入模块化的多个像素并计算最相似的先前信号，以及用于在运动图像编码中优化运动估计的方法，包括模块化搜索像素包括的步骤 在作为多个像素单位的N×N大小的宏块中，以及使用模块化搜索像素执行SAD计算的步骤，以便通过将搜索区域确定为选择一些像素来提高处理速度和最小化图像质量的降低 模块，其分别使用一定规则包括四个像素，并减少SAD计算量 。

公开(公告)号：US20020113901A1

公开(公告)日：2002-08-22

申请号：US09788135

申请日：2001-02-16

Inventor： Wilfried M. Osberger

IPC: H04N005/14

CPC classification number: H04N5/145

Abstract: A robust technique for estimating camera motion parameters calculates the motion vectors for a current frame vis a vis a previous frame using a multi-scale block matching technique. The means of the motion vectors for the current and the previous frames are compared for a temporal discontinuity, the detection of such temporal discontinuity as a temporal repetition, such as frozen field or 3:2 pulldown, terminating the processing of the current frame with the camera motion parameter estimate for the previous frame being used for the current frame. Otherwise motion vectors for spatially flat areas and text/graphic overlay areas are discarded and an error-of-fit for the previous frame is tested to determine initial parameters for an iterative camera motion estimation process. If the error-of-fit is less than a predetermined threshold, then the camera motion parameters for the previous frame are used as the initial parameters, otherwise a best least squares fit is used as the initial parameters. Outlier motion vectors are removed and the camera motion parameters are recalculated using a least squares best fit in an iterative process until either the error-of-fit for the current frame is less than the predetermined threshold or the number of iterations exceeds a maximum. The estimated camera motion parameters and associated error-of-fit are provided as an output.

Abstract translation: 用于估计摄像机运动参数的鲁棒技术使用多尺度块匹配技术来计算当前帧相对于先前帧的运动矢量。 对当前帧和前一帧的运动矢量的平均值进行时间不连续性检测，如时间重复（例如，冻结场或3：2下拉）等时间不连续性的检测，终止当前帧的处理 用于当前帧的前一帧的相机运动参数估计。 否则，丢弃空间平坦区域和文本/图形覆盖区域的运动矢量，并测试前一帧的拟合误差，以确定迭代相机运动估计过程的初始参数。 如果拟合误差小于预定阈值，则将先前帧的相机运动参数用作初始参数，否则将使用最佳最小二乘拟合作为初始参数。 去除异常运动矢量，并使用迭代过程中的最小二乘法最佳拟合重新计算摄像机运动参数，直到当前帧的拟合误差小于预定阈值或迭代次数超过最大值。 提供估计的摄像机运动参数和相关的拟合误差作为输出。

公开(公告)号：US20020113897A1

公开(公告)日：2002-08-22

申请号：US09944162

申请日：2001-08-30

Inventor： Andreas Menkhoff

IPC: H04N007/04 ,  H04N005/14

CPC classification number: H03H17/0294

Abstract: Digital filter for filtering a digital input signal with a variable filter length (1), it being possible to switch over the filter length (1) of the digital filter (8) as a function of a variable input clock frequency (fin) of the digital input signal without the ratio between the input clock frequency (fin) and an output clock frequency (fout) of the filtered digital output signal which is output by the digital filter (8) changing.

Abstract translation: 用于以可变滤波器长度（1）对数字输入信号进行滤波的数字滤波器，可以作为可变输入时钟频率（fin）的函数切换数字滤波器（8）的滤波器长度（1） 没有输入时钟频率（fin）与由数字滤波器（8）输出的滤波数字输出信号的输出时钟频率（fout）之间的比率发生变化的数字输入信号。

公开(公告)号：US20020109789A1

公开(公告)日：2002-08-15

申请号：US10117235

申请日：2002-04-08

Applicant: Mitsubishi Denki Kabushiki Kaisha

Inventor： Toshitsugu Wakabayashi

IPC: H04N005/52 ,  H04N005/14

CPC classification number: G09G1/002 ,  H04N5/208 ,  H04N5/59 ,  H04N5/68 ,  H04N9/645

Abstract: A beam current detection unit (5) detects the brightness of the image displayed on a screen (10) on the basis of a current J flowing inside a CRT (1). A drive control unit (40) selectively closes and opens the switches (42) and (43) in accordance with the detected brightness. Restriction characteristic against a current (I) flowing in a secondary winding (32) included in an inductor (3) is varied stepwise so that the inductance of a primary winding (31) is controlled. Thereby, the frequency characteristic of the gain of an amplifying unit (2) for amplifying an image signal (Pin) is controlled. The high frequency component of the gain is enhanced for a binary image of a normal display, whereas it is enfeebled for a binary image of a reverse display, for example. Thus, the visual quality of the image is optimized depending on the type of the image.

Abstract translation: 光束电流检测单元（5）基于在CRT（1）内流动的电流J来检测在屏幕（10）上显示的图像的亮度。 驱动控制单元（40）根据检测到的亮度选择性地关闭和打开开关（42）和（43）。 包含在电感器（3）中的次级绕组（32）中流动的电流（I）的限制特性是逐步改变的，从而控制初级绕组（31）的电感。 由此，控制用于放大图像信号（Pin）的放大单元（2）的增益的频率特性。 增益的高频分量对于正常显示的二进制图像而言是增强的，而对于例如反向显示的二进制图像则是增强的。 因此，根据图像的类型来优化图像的视觉质量。

公开(公告)号：US20020109788A1

公开(公告)日：2002-08-15

申请号：US10011901

申请日：2001-12-04

Inventor： Roger A. Morton ,  Gabriel Fielding ,  Christian L. Lurin

IPC: H04N005/14

CPC classification number: H04N5/217 ,  H04N5/253

Abstract: A method for digitally processing motion image signals comprises the steps of: (a) obtaining digital motion image signals that originated from a sequence of motion picture frames; (b) using a frame averaging technique to reduce noise in the digital motion image signals, thereby producing noise-processed motion image signals; and (c) producing output digital motion image signals by sharpening the noise-processed motion image signals with a sharpening filter designed in the spatial domain with a 2D kernel that increases the noise in order to provide a desired grain response.

Abstract translation: 一种用于数字处理运动图像信号的方法包括以下步骤：（a）获得源自运动图像帧序列的数字运动图像信号; （b）使用帧平均技术来减少数字运动图像信号中的噪声，由此产生经噪声处理的运动图像信号; 以及（c）通过利用增加噪声的2D内核在空间域中设计的锐化滤波器来锐化噪声处理的运动图像信号来产生输出数字运动图像信号，以便提供期望的晶粒响应。

公开(公告)号：US20020093594A1

公开(公告)日：2002-07-18

申请号：US10011856

申请日：2001-12-04

Inventor： Dan Kikinis

IPC: H04N005/14

CPC classification number: G06K9/3266 ,  G06K9/2054 ,  G06K2209/01 ,  H04N21/4622 ,  H04N21/4782

Abstract: Characters represented within a frame of a television presentation are identified. A pattern formed by a subset of the characters is identified if the pattern is indicative of an addressing datum. A provision is made for a selection of characters that form the pattern indicative of the addressing datum. In one embodiment, a web page is displayed upon a selection of characters that form a pattern indicative of an uniform resource locator for the web page.

Abstract translation: 识别在电视节目的帧内表示的人物。 如果模式指示寻址数据，则识别由字符的子集形成的模式。 提供了形成指示寻址基准的模式的字符的选择。 在一个实施例中，在形成指示网页的统一资源定位符的模式的字符的选择上显示网页。

公开(公告)号：US20020075959A1

公开(公告)日：2002-06-20

申请号：US09738644

申请日：2000-12-15

Applicant: PHILIPS ELECTRONICS NORTH AMERICA CORPORATION

Inventor： Nehal R. Dantwala

IPC: H04N007/12 ,  H04N005/14 ,  H04N009/64 ,  G06K009/00

CPC classification number: H04N19/577 ,  H04N19/105 ,  H04N19/112 ,  H04N19/137 ,  H04N19/51 ,  H04N19/587

Abstract: For use in a video image upconversion unit of the type that uses motion compensation to generate an interpolated field using motion vectors, an improved method of motion compensation is disclosed. The method performs motion compensation on a pixel and determines whether a motion vector assigned to the pixel is correct or incorrect. If the motion vector is incorrect, the method sets the value of the pixel to a previously recorded pixel value. The previously recorded pixel value is obtained by calculating for the pixel the difference between the value of a corresponding motion compensated pixel from a previous frame and the value of a corresponding motion compensated pixel from a next field. The difference is then compared with a threshold value. If the difference is less than the threshold value, then the value of the pixel is set equal to the average of the value of the corresponding motion compensated pixel from the previous frame and the value of the corresponding motion compensated pixel from the next field.

Abstract translation: 为了在使用运动补偿的类型的视频图像上变频单元中使用运动矢量来生成内插场，公开了改进的运动补偿方法。 该方法对像素执行运动补偿，并且确定分配给像素的运动矢量是正确还是不正确。 如果运动矢量不正确，则该方法将像素的值设置为先前记录的像素值。 通过对像素计算来自前一帧的相应的运动补偿像素的值与来自下一场的相应运动补偿像素的值之间的差来获得先前记录的像素值。 然后将差值与阈值进行比较。 如果差小于阈值，则将像素的值设置为等于来自前一帧的相应运动补偿像素的值的平均值和来自下一场的相应运动补偿像素的值。