Noise reduction
    1.
    发明授权
    Noise reduction 失效
    降噪

    公开(公告)号:US5715335A

    公开(公告)日:1998-02-03

    申请号:US223389

    申请日:1994-04-05

    IPC分类号: H04N5/21 G06K9/40

    CPC分类号: H04N5/21

    摘要: In a noise reduction filter having a filter coupled to receive a plurality of input signal samples (.smallcircle.,.sym.) and furnishing noise-reduced signal samples, and a delay circuit coupled to the output of the filter and which furnishes a plurality of delayed noise reduced signal samples (X) to a further input of the filter, the samples (Pn.sub.1 . . . Pn.sub.n) applied to the filter are not directly neighboring samples.

    摘要翻译: 在具有耦合以接收多个输入信号样本(+602,(+))并提供降噪信号样本的滤波器的降噪滤波器中,以及耦合到滤波器的输出的延迟电路,并且提供多个 延迟噪声降低的信号样本(X)到滤波器的另一个输入,施加到滤波器的采样(Pn1 ... Pnn)不是直接相邻的采样。

    Motion-compensated picture signal interpolation
    4.
    发明授权
    Motion-compensated picture signal interpolation 失效
    运动补偿图像信号插值

    公开(公告)号:US5495300A

    公开(公告)日:1996-02-27

    申请号:US231858

    申请日:1994-04-22

    CPC分类号: H04N7/012 H04N7/0132

    摘要: In a motion-compensated picture signal interpolation apparatus comprising a field memory (FM2) for delaying an input field sequence, a motion vector estimator (ME) for furnishing motion vectors, and a motion-compensated interpolator (MC) coupled to an input and an output of the field memory (FM2) for furnishing a sequence of motion-compensated output fields on the basis of the motion vectors, inputs of the motion vector estimator (ME) are coupled to the input and the output of the field memory (FM2) to estimate the motion vectors by means of the same single field memory (FM2) which is used for the motion-compensated interpolation. (FIG. 1 )

    摘要翻译: 在包括用于延迟输入场序列的场存储器(FM2),用于提供运动矢量的运动矢量估计器(ME)和耦合到输入端的运动补偿内插器(MC)的运动补偿图像信号插值装置中, 用于根据运动矢量提供运动补偿输出场序列的场存储器(FM2)的输出,运动矢量估计器(ME)的输入耦合到场存储器(FM2)的输入和输出, 通过用于运动补偿插值的相同的单场存储器(FM2)来估计运动矢量。 (图。

    Interlaced-to-sequential scan conversion
    5.
    发明授权
    Interlaced-to-sequential scan conversion 失效
    隔行扫描转换

    公开(公告)号:US5532750A

    公开(公告)日:1996-07-02

    申请号:US417718

    申请日:1995-04-03

    CPC分类号: H04N7/012

    摘要: In a method of converting an interlaced video signal (IS) into an output sequentially scanned video signal (SSS), a first sequentially scanned video signal (SS1) is furnished in dependence upon the interlaced video signal (IS). Subsequently, a motion-compensated sequentially scanned signal (MCS) is furnished in dependence upon the first sequentially scanned video signal (SS1). All video lines of the output sequentially scanned video signal (SSS) are furnished in dependence upon both the first sequentially scanned video signal (SS1) and the motion-compensated sequentially scanned signal (MCS) to prevent inaccuracies in motion vectors used in the motion-compensated processing operation (5-9) from resulting in visible distortions.

    摘要翻译: 在将隔行扫描视频信号(IS)转换为顺序扫描的视频信号(SSS)的方法中,根据隔行视频信号(IS)提供第一顺序扫描的视频信号(SS1)。 随后,根据第一顺序扫描的视频信号(SS1)来提供运动补偿顺序扫描信号(MCS)。 根据第一顺序扫描的视频信号(SS1)和运动补偿的顺序扫描信号(MCS)两者来提供输出顺序扫描的视频信号(SSS)的所有视频行,以防止运动补偿中使用的运动矢量的不准确性, 补偿处理操作(5-9),导致可见的失真。

    Motion estimation
    6.
    发明授权
    Motion estimation 失效
    运动估计

    公开(公告)号:US06278736B1

    公开(公告)日:2001-08-21

    申请号:US08863700

    申请日:1997-05-27

    IPC分类号: H04B166

    摘要: In a method of estimating motion vectors, motion parameters (p1-p4) are determined (PC) for a given field (n−1) of a video signal; and motion vectors ( D(X, n) ) for a field (n) of said video signal are determined in dependence upon at least one predetermined motion vector ( D(x−X, y−Y, n), D(x+X, y−Y, n), D(x, y+2Y, n−1) ) and at least one additional motion vector (PV(X) derived (PG) from said motion parameters (p1-p4).

    摘要翻译: 在估计运动矢量的方法中,对于视频信号的给定场(n-1)确定运动参数(p1-p4)(PC) 根据至少一个预定的运动矢量(D(xX,yY,n),D(x + X,yY,...))来确定用于所述视频信号的场(n)的运动矢量(D(X,n) n),D(x,y + 2Y,n-1))和从所述运动参数(p1-p4)导出的至少一个附加运动矢量(PV(X))导出(PG)。

    Video signal scan conversion
    7.
    发明授权
    Video signal scan conversion 失效
    视频信号扫描转换

    公开(公告)号:US6034734A

    公开(公告)日:2000-03-07

    申请号:US742686

    申请日:1996-10-31

    IPC分类号: H04N5/14 H04N5/44 H04N7/01

    CPC分类号: H04N7/012

    摘要: In a scan conversion method of generating an output video signal from an interlaced input signal, including the steps of furnishing (1) a first signal having first lines (F.sub.i (x-(0, 1).sup.T, n)) corresponding to original lines of the interlaced input signal, and second lines (F.sub.i (x, n)) in addition to the first lines (F.sub.i (x-(0, 1).sup.T, n)); and providing (5, 11, 7, 13) a second signal which is delayed or advanced with respect to the first signal, the second signal having first processed lines (F.sub.out (x-(0, 1).sup.T -D, n-1)) corresponding to the original lines, and second processed lines (F.sub.out (x-D, n-1)) corresponding to the second lines (F.sub.i (x, n)); output lines (F.sub.out (x, n)) of the output video signal are obtained in dependence upon a first difference between the first processed lines (F.sub.out (x-(0, 1).sup.T -D, n-1)) and the first lines (F.sub.i (x-(0, 1).sup.T, n)), and a second difference between the second processed lines (F.sub.out (x-D, n-1)) and the second lines (F.sub.i (x, n)).

    摘要翻译: 在从隔行输入信号产生输出视频信号的扫描转换方法中,包括以下步骤:(1)具有与原始行对应的第一行(Fi(x-(0,1)T,n))的第一信号 除了第一行(Fi(x-(0,1)T,n))之外,隔行输入信号和第二行(Fi(x,n))) 以及提供相对于所述第一信号被延迟或前进的第二信号(5,11,7,13),所述第二信号具有第一处理线(Fout(x-(0,1)TD,n-1)) 与第二行(Fi(x,n))相对应的原始行和第二处理行(Fout(xD,n-1)); 根据第一处理行(Fout(x-(0,1)TD,n-1))与第一行(Fout(x-(0,1)TD,n-1))之间的第一差异,获得输出视频信号的输出行(Fout(x,n) Fi(x-(0,1)T,n))和第二处理线(Fout(xD,n-1))和第二线(Fi(x,n))之间的第二差。

    Motion-compensated field rate conversion
    8.
    发明授权
    Motion-compensated field rate conversion 失效
    运动补偿场速转换

    公开(公告)号:US5929919A

    公开(公告)日:1999-07-27

    申请号:US626094

    申请日:1996-04-03

    IPC分类号: H04N5/44 H04N7/01

    摘要: In a method of processing input fields (I) of a picture signal to obtain interpolated fields (O) located temporally between the input fields (I), motion vectors (MV) are provided (30) between input fields (I), whereafter a quality (Err) of the motion vectors (MV) is assessed (40). In dependence upon the assessed quality (Err), the motion vectors (MV) are adapted (50, 60) such that both decreased and increased motion vector lengths occur in respective interpolated fields (O). The interpolated fields (O) are obtained (20) from the input fields (I) in dependence upon the thus adapted motion vectors (k*MV).

    摘要翻译: 在处理图像信号的输入字段(I)的方法中,获得时间上位于输入字段(I)之间的内插字段(O),在输入字段(I)之间提供运动矢量(MV)(30),之后, 评估运动矢量(MV)的质量(Err)(40)。 根据评估的质量(Err),运动矢量(MV)被适配(50,60),使得减少和增加的运动矢量长度出现在相应的内插场(O)中。 根据这样适应的运动矢量(k * MV),从输入场(I)获得内插场(O)(20)。

    Motion-compensated interpolation
    9.
    发明授权
    Motion-compensated interpolation 失效
    运动补偿插补

    公开(公告)号:US5777682A

    公开(公告)日:1998-07-07

    申请号:US606133

    申请日:1996-02-23

    CPC分类号: H04N7/0132 H04N7/014

    摘要: A method of motion-compensated interpolation of a picture signal (Pi) having input fields, comprises the steps of providing (ME) motion vectors (D) between a first and a second input field of the picture signal (Pi), and providing (MC1, OC) an interpolated field (Po) on the basis of at least one input field in dependence upon the motion vectors (D). At least one further motion vector (Dmax) is furnished (C2) in addition to each provided motion vector (D), whereby the interpolated field (Po) is furnished (MC1, MC2, OC) in dependence upon both the first-mentioned motion vectors (D) and the further motion vectors (Dmax).

    摘要翻译: 一种具有输入场的图像信号(Pi)的运动补偿内插方法,包括以下步骤:在图像信号(Pi)的第一和第二输入场之间提供(ME)运动矢量(D),并提供( MC1,OC)基于运动矢量(D)的至少一个输入场的内插场(Po)。 除了每个提供的运动矢量(D)之外还提供至少一个另外的运动矢量(Dmax)(C2),由此根据前述提到的运动(MC1,MC2,OC)提供内插场(Po) 向量(D)和其他运动矢量(Dmax)。