Biased motion vector interpolation for reduced video artifacts
    11.
    发明授权
    Biased motion vector interpolation for reduced video artifacts 有权
    用于减少视频伪影的偏移运动矢量插值

    公开(公告)号:US08073055B2

    公开(公告)日:2011-12-06

    申请号:US10555518

    申请日:2004-05-03

    IPC分类号: H04N11/02 G06K9/36

    摘要: In a video processing system where motion vectors are estimated for a subset of the blocks of data forming a video frame, and motion vectors are interpolated for the remainder of the blocks of the frame, a method includes determining, for at least at least one block of the current frame for which a motion vector is not estimated (204), whether a block to the left or right has an estimated zero motion vector (206), determining whether the at least one block had an estimated zero motion vector in a previous frame (206), and if both determinations are affirmative (208), providing a predetermined motion vector for the at least one block. The predetermined motion vector may be a zero motion vector (208).

    摘要翻译: 在对构成视频帧的数据块的子集的运动矢量进行估计的视频处理系统中,对帧的其余部分内插运动矢量,一种方法包括至少确定至少一个块 对于其中未估计运动矢量的当前帧(204),左或右的块是否具有估计的零运动矢量(206),确定至少一个块是否具有前一个中的估计的零运动矢量 帧(206),并且如果两个确定都是肯定的(208),则为所述至少一个块提供预定的运动矢量。 预定运动矢量可以是零运动矢量(208)。

    METHOD AND APPARATUS FOR GENERATING ENHANCED IMAGES
    12.
    发明申请
    METHOD AND APPARATUS FOR GENERATING ENHANCED IMAGES 审中-公开
    用于生成增强图像的方法和装置

    公开(公告)号:US20110280494A1

    公开(公告)日:2011-11-17

    申请号:US13144498

    申请日:2010-01-12

    IPC分类号: G06K9/40

    摘要: A method and apparatus for generating an enhanced image is provided. The method includes receiving (101) an image to be enhanced. A set of sub images is generated (103) from the image where the different sub images correspond to different spatial frequency bands for the image. A pixel value variation is determined (107) in a neighborhood region of the first pixel region for at least a first pixel region of the image. An enhanced pixel region is then generated (109) for the enhanced image by combining the first pixel region and corresponding pixel regions of sub images in response to the pixel value variation. Specifically, a weighted summation of the input image and sub images may be generated with the weights being determined in response to the luminance variance in the neighborhood region. The invention may e.g. provide improved contrast enhancement with reduced artifacts and/or noise.

    摘要翻译: 提供了一种用于产生增强图像的方法和装置。 该方法包括接收(101)要增强的图像。 从不同子图像对应于图像的不同空间频带的图像生成(103)一组子图像。 在图像的至少第一像素区域中,在第一像素区域的邻域中确定像素值变化(107)。 然后,响应于像素值变化,通过组合第一像素区域和子图像的对应像素区域,生成用于增强图像的增强像素区域(109)。 具体地,可以生成输入图像和子图像的加权求和,其中所述权重是响应于邻域中的亮度方差来确定的。 本发明可以例如 提供改进的对比度增强,减少伪像和/或噪声。

    Motion Compensated De-Interlacing with Film Mode Adaptation
    13.
    发明申请
    Motion Compensated De-Interlacing with Film Mode Adaptation 审中-公开
    运动补偿去隔行与电影模式适应

    公开(公告)号:US20080259207A1

    公开(公告)日:2008-10-23

    申请号:US10597577

    申请日:2005-01-24

    IPC分类号: H04N7/01

    CPC分类号: H04N7/012 H04N5/145 H04N7/014

    摘要: The invention relates to a method for de-interlacing a hybrid video sequence using at least one estimated motion vector for interpolating pixels. Field for petition patents, typically occurring in film originated video material, disturb the function of de-interlacing algorithm designed to convert interlaced video single into progressively scanned video. Therefore a mode decision has to be applied for local adaptation to the film/video mode, which is possible by defining values for a first motion vector and a second motion vector, calculating at least one first pixel using at least one pixel of previous image and one first motion vector, calculating at least one second pixel using at least one pixel of a next image and one second motion vector, calculating a reliability of said first and the second motion vector by comparing at least said first pixel with at least said second pixel the first and said second motion vectors being pre-defined for said calculation of reliability, and estimation an actual value for a motion vector, which turned out to be most reliable for de-interlacing said image.

    摘要翻译: 本发明涉及一种使用至少一个用于内插像素的估计运动矢量去隔行混合视频序列的方法。 请求专利的领域通常发生在电影发行的视频材料中,干扰了隔行扫描算法的功能,该算法旨在将隔行扫描视频单进行逐行扫描的视频。 因此,必须将模式决定应用于电影/视频模式的本地适应,这可以通过定义第一运动矢量和第二运动矢量的值,使用至少一个先前图像的像素来计算至少一个第一像素,以及 一个第一运动矢量,使用下一个图像和一个第二运动矢量的至少一个像素计算至少一个第二像素,通过将至少所述第一像素与至少所述第二像素进行比较来计算所述第一和第二运动矢量的可靠性 所述第一运动矢量和所述第二运动矢量被预定义用于所述可靠性计算,以及估计运动矢量的实际值,其被证明对于去隔行所述图像是最可靠的。

    Unit for and Method of Image Conversion
    14.
    发明申请
    Unit for and Method of Image Conversion 审中-公开
    图像转换的单位和方法

    公开(公告)号:US20070258653A1

    公开(公告)日:2007-11-08

    申请号:US11573276

    申请日:2005-08-04

    IPC分类号: G06K9/36

    CPC分类号: H04N7/0125 H04N5/208 H04N5/21

    摘要: An image conversion unit (100) for converting an input image with an input frequency spectrum into an output image with an output frequency spectrum, the output frequency spectrum having more relatively high frequency components than the input frequency spectrum is disclosed. The image conversion unit comprises: means for providing (102) an intermediate image on basis of the input image; and combining means (104) for combining a high frequency signal with the intermediate image into the output image by means of error diffusion.

    摘要翻译: 一种用于将具有输入频谱的输入图像转换成具有输出频谱的输出图像的图像转换单元(100),其输出频谱具有比输入频谱更高的频率分量。 图像转换单元包括:用于基于输入图像提供(102)中间图像的装置; 以及用于通过误差扩散将高频信号与中间图像组合成输出图像的组合装置(104)。

    Motion estimation with video mode detection
    15.
    发明申请
    Motion estimation with video mode detection 有权
    运动估计与视频模式检测

    公开(公告)号:US20070165957A1

    公开(公告)日:2007-07-19

    申请号:US11570800

    申请日:2005-06-21

    IPC分类号: G06K9/36

    摘要: The invention relates to a method for providing a motion parameter set and/or a picture repetition pattern from an input video signal, in particular for de-interlacing a video signal with using a candidate motion parameter set weighted with a picture repetition pattern value for calculating a motion compensated pixel from a pixel value of a first image. To provide motion compensation which accounts for field repetition patterns, minimizing an error criterion between at least one pixel value of a second image and at least the motion compensated pixel value by iterating the calculation of the motion compensated pixel with at least two candidate motion parameters sets and/or at least two picture repetition values, and putting out the candidate motion parameter set and/or the picture repetition value which provides the minimized error criterion is proposed.

    摘要翻译: 本发明涉及一种用于从输入视频信号提供运动参数集和/或图像重复模式的方法,特别是用于使用以图像重复图案值加权的候选运动参数集合来对视频信号进行去隔行计算 来自第一图像的像素值的运动补偿像素。 为了提供考虑场重复模式的运动补偿,通过用至少两个候选运动参数集迭代运动补偿像素的计算来最小化第二图像的至少一个像素值与至少运动补偿像素值之间的误差标准 和/或至少两个图像重复值,并且提出提出最小化误差准则的候选运动参数集和/或图像重复值。

    Spatial signal conversion
    16.
    发明申请
    Spatial signal conversion 有权
    空间信号转换

    公开(公告)号:US20070116383A1

    公开(公告)日:2007-05-24

    申请号:US10560006

    申请日:2004-06-03

    申请人: Gerard De Haan

    发明人: Gerard De Haan

    IPC分类号: G06K9/32

    摘要: A spatial filter unit (200) for converting a first input signal (U) comprising input samples, into an output signal comprising output samples, is disclosed. The spatial filter unit (200) comprises: a coefficient-determining means (106) for determining a first filter coefficient; and an adaptive filtering means (104) for computing a first one of the output samples on basis of a first one of the input samples and the first filter coefficient. The coefficient-determining means (106) are arranged to determine the first filter coefficient on basis of a second input signal (Y) being correlated to the first input signal (U).

    摘要翻译: 公开了一种用于将包括输入样本的第一输入信号(U)转换为包括输出样本的输出信号的空间滤波器单元(200)。 空间滤波器单元(200)包括:用于确定第一滤波器系数的系数确定装置(106) 以及用于基于所述输入样本中的第一个和所述第一滤波器系数计算所述输出样本中的第一个样本的自适应滤波装置(104)。 系数确定装置(106)被布置成基于与第一输入信号(U)相关联的第二输入信号(Y)来确定第一滤波器系数。

    Luminance and color separation
    17.
    发明申请
    Luminance and color separation 审中-公开
    亮度和颜色分离

    公开(公告)号:US20060125966A1

    公开(公告)日:2006-06-15

    申请号:US10560718

    申请日:2004-06-16

    IPC分类号: H04N9/77

    CPC分类号: H04N9/78

    摘要: A luminance and color separation filter unit (300, 400, 500, 600, 700) for extracting a luminance signal (Y) and two color signals (U, V) from a composite color television signal (CVBS), comprising a chrominance (C) signal being modulated on a subcarrier which is located in the high-frequency part of the frequency spectrum of the luminance signal (Y), is disclosed. The filter unit (300, 400, 500, 600, 700) is arranged to compute at least one value of a set of values comprising an output luminance value (Y(x, n)) of a particular output pixel (x), a first color value (U(x, n)) of the particular output pixel (x) and a second color value (V(x, n)) of the particular output pixel (x) on basis of a first (F1), a second (F2) and a third (F3) sample derived from the composite color television signal (CVBS), where the first (F1), the second (F2) and the third (F3) sample have mutually different sub-carrier phases.

    摘要翻译: 一种用于从复合彩色电视信号(CVBS)提取亮度信号(Y)和两个颜色信号(U,V)的亮度和颜色分离滤光器单元(300,400,500,600,700),包括色度(C )信号被调制在位于亮度信号(Y)的频谱的高频部分中的子载波上。 滤波器单元(300,400,500,600,700)被布置为计算包括特定输出像素(x)的输出亮度值(Y(x,n))的一组值的至少一个值, 基于第一(F 1)的特定输出像素(x)的第一颜色值(U(x,n))和特定输出像素(x)的第二颜色值(V(x,n) 1),来自复合彩色电视信号(CVBS)的第二(F 2 N 2)和第三(F 3 N 3)样本,其中第一( F< 1>),第二(F 2 N 2)和第三(F 3 N 3)样品具有相互不同的子载流子相。

    Unit for and method of image conversion
    18.
    发明申请
    Unit for and method of image conversion 失效
    单位和图像转换方法

    公开(公告)号:US20060056735A1

    公开(公告)日:2006-03-16

    申请号:US10535057

    申请日:2003-10-27

    申请人: Gerard De Haan

    发明人: Gerard De Haan

    IPC分类号: G06K9/32

    CPC分类号: G06T3/4084

    摘要: An image conversion unit (100,200,300) for converting a first image (101) with a first resolution into a second image (103) with a second resolution, the second resolution being higher than the first resolution is disclosed. The image conversion unit (100,200,300) comprises a noise generator (106) for generating noise and a combining unit (104) arranged to add the noise to the second image (103). Preferably the noise that is added comprises spectral components which are in a part of a frequency spectrum which is above the Nyquist frequency of the first image. Optionally the image conversion unit comprises a noise measurement unit (302) to control the noise generator (106).

    摘要翻译: 一种用于将具有第一分辨率的第一图像(101)转换成具有第二分辨率的第二图像(103)的图像转换单元(100,200,300),所述第二分辨率高于第一分辨率。 图像转换单元(100,200,300)包括用于产生噪声的噪声发生器(106)和被布置成将噪声添加到第二图像(103)的组合单元(104)。 优选地,所添加的噪声包括在高于第一图像的奈奎斯特频率的频谱的一部分中的频谱分量。 可选地,图像转换单元包括用于控制噪声发生器(106)的噪声测量单元(302)。

    Unit for and method of image conversion
    19.
    发明申请
    Unit for and method of image conversion 审中-公开
    单位和图像转换方法

    公开(公告)号:US20050270419A1

    公开(公告)日:2005-12-08

    申请号:US10530376

    申请日:2003-09-17

    申请人: Gerard De Haan

    发明人: Gerard De Haan

    IPC分类号: H04N7/01

    CPC分类号: H04N7/0135 H04N7/0125

    摘要: An image conversion unit (200) for converting a first input image with a first resolution into an output image with a second resolution, comprises a coefficient-determining means (106) for determining a first filter coefficient on basis of pixel values of the first input image. The coefficient-determining means (106) is arranged to control an adaptive filtering means (104) for calculating a pixel value of the output image on basis of an input pixel value of the first image and the first filter coefficient. The adaptive filtering means (104) is arranged to perform a non-linear operation.

    摘要翻译: 一种用于将具有第一分辨率的第一输入图像转换为具有第二分辨率的输出图像的图像转换单元(200),包括系数确定装置(106),用于基于第一输入的像素值确定第一滤波器系数 图片。 系数确定装置(106)被布置成控制用于基于第一图像的输入像素值和第一滤波器系数来计算输出图像的像素值的自适应滤波装置(104)。 自适应滤波装置(104)被布置成执行非线性操作。

    Unit for and method of estimating a current motion vector
    20.
    发明申请
    Unit for and method of estimating a current motion vector 审中-公开
    用于估计当前运动矢量的单位和方法

    公开(公告)号:US20050180506A1

    公开(公告)日:2005-08-18

    申请号:US10515736

    申请日:2003-05-19

    IPC分类号: G06T7/20 H04N7/26 H04N7/12

    摘要: The motion estimation unit (100) being arranged to estimate a current motion vector for a first group (212) of pixels, comprises: a generating unit (106) for generating a set of candidate motion vectors for the first group (212) of pixels, with the candidate motion vectors being extracted from a set of previously estimated motion vectors; a match error unit (102) for calculating match errors of respective candidate motion vectors; and a selection unit (104) for selecting the current motion vector from the candidate motion vectors. The motion estimation unit (100) is arranged to modulate a predetermined match error threshold on basis of a result of segmentation for the first image. If the match error of a first one of the candidate motion vectors is below the current predetermined match error threshold then the first one of the candidate motion vectors is selected and evaluation of further candidate motion vectors for the first group of pixels is skipped.

    摘要翻译: 运动估计单元(100)被布置为估计第一组(212)像素的当前运动矢量,包括:生成单元(106),用于生成第一组像素(212)的候选运动矢量集合 ,其中从一组先前估计的运动矢量中提取候选运动矢量; 用于计算各个候选运动矢量的匹配误差的匹配误差单元(102); 以及用于从候选运动矢量中选择当前运动矢量的选择单元(104)。 运动估计单元(100)被布置成基于第一图像的分割结果来调制预定匹配误差阈值。 如果候选运动矢量中的第一个运动矢量的匹配误差低于当前预定匹配误差阈值,则选择候选运动矢量中的第一运动矢量,并跳过针对第一组像素的其它候选运动矢量的评估。