公开(公告)号：US5708479A

公开(公告)日：1998-01-13

申请号：US661000

申请日：1996-06-10

申请人： Rainer Gehrmann

发明人： Rainer Gehrmann

IPC分类号： H04N9/75

CPC分类号： H04N9/75

摘要： In a method of inserting a background picture signal into key color-characterized parts of a foreground picture signal, the selectivity, i.e., the boundary between its foreground colors and the transition or mixed colors degenerated by the key color should be changeable within a frame period by means of masking. This provides the possibility of differently keying equal colors of different origin occurring in a picture--as a pure foreground color, on the one hand, and as a mixed color, on the other hand--namely, by dynamically switching the selectivity within a frame period by means of the chroma angle .alpha..sub.c.

摘要翻译： 在将背景图像信号插入到前景图像信号的关键颜色特征部分中的方法中，选择性，即它的前景颜色与由键颜色退化的转换或混合颜色之间的边界应当在一个帧周期内变化 通过掩蔽。 另一方面，这提供了在图像中发生的不同原色的相同颜色不同地键入作为纯前景色的可能性，另一方面，作为混合色，即通过在帧周期内动态地切换选择性 通过色度角αc。

公开(公告)号：US5301016A

公开(公告)日：1994-04-05

申请号：US987894

申请日：1992-12-04

申请人： Rainer Gehrmann

发明人： Rainer Gehrmann

IPC分类号： H04N5/272 ,  H04N9/75

CPC分类号： H04N9/75

摘要： In a method, in which a control signal assumes a first value when the foreground signal represents a color in the region of the key color and a second value when the foreground signal represents a different color, and in which the control signal has a transition range between the two values, the distances between the color locations of the pixels of the foreground signal and the color location of the key color are computed for distinguishing color locations associated with foreground objects or with the key color from color locations to be associated with the transition range. Those color locations whose distance is distinguished from color locations of one or a plurality of adjacent pixels by more than a predetermined distance (not complying with a homogeneity criterion) are considered to be associated with the transition range. Intermediate values of the control signal are computed for the color locations in the transition range.

摘要翻译： 在一种方法中，当前景信号表示键颜色的区域中的颜色时，控制信号呈现第一值，而当前景信号表示不同的颜色时，控制信号呈现第二值，并且其中控制信号具有转变范围 在两个值之间，计算前景信号的像素的颜色位置和键颜色的颜色位置之间的距离，用于区分与前景对象相关联的颜色位置或与颜色位置的关键颜色相关联的转换 范围。 将距离与一个或多个相邻像素的颜色位置区分大于预定距离（不符合均匀性标准）的那些颜色位置被认为与过渡范围相关联。 针对过渡范围内的颜色位置计算控制信号的中间值。

公开(公告)号：US4547711A

公开(公告)日：1985-10-15

申请号：US609735

申请日：1984-05-14

申请人： Rainer Gehrmann

发明人： Rainer Gehrmann

IPC分类号： H04N3/16 ,  H03K4/69 ,  H01J29/70 ,  H01J29/76

CPC分类号： H03K4/696

摘要： A first regulating amplifier (7) provides a linearly increasing current to the horizontal deflection coil during the forward trace sweep and the amplifier is disconnected from the deflection coil and its parallel capacitor (2) during the retrace period to provide flyback by free reaction of the oscillating circuit. In order to shorten the retrace period an auxiliary coil (17) is energized with a regulated current during the forward trace sweep with the help of a second regulating amplifier (8) gated on during a preliminary portion of the line interval and a controllable voltage source (14) set thereby. During a first portion of the retrace interval currents flowing respectively in the auxiliary coil and in the horizontal deflection coil are stored in the capacitor (2), which discharges during the remainder of the retrace period only through the deflection coil.

摘要翻译： 第一调节放大器（7）在正向扫描期间向水平偏转线圈提供线性增加的电流，并且在回扫期间放大器与偏转线圈及其并联电容器（2）断开，以通过自由反应提供回扫 振荡电路。 为了缩短回扫周期，借助于在行间隔的预备部分期间门控的第二调节放大器（8），在正向扫描扫描期间，辅助线圈（17）被激励，并且可控电压源 （14）。 在回扫间隔的第一部分期间，分别在辅助线圈和水平偏转线圈中流动的电流被存储在电容器（2）中，电容器（2）仅在回扫周期的剩余时间期间才通过偏转线圈放电。

公开(公告)号：US5644365A

公开(公告)日：1997-07-01

申请号：US527739

申请日：1995-09-13

申请人： Rainer Gehrmann

发明人： Rainer Gehrmann

IPC分类号： H04N5/272 ,  H04N5/275 ,  H04N9/75 ,  H04N9/74

CPC分类号： H04N9/75 ,  H04N5/275

摘要： A method and a circuit for generating a composite video signal formed from a foreground signal and a background signal in accordance with the luminance self-key mode is described, in which the key signal is derived from the luminance foreground signal in dependence upon a clipping level. To avoid a quadratic dependence of the luminance signal during product formation of the key signal with the foreground signal (referred to as "double multiplication"), the linear key signal should be replaced by a control signal which is hyperbolically formed in such a way that the unwanted quadratic dependence is eliminated.

摘要翻译： 描述了根据亮度自身模式产生由前景信号和背景信号形成的复合视频信号的方法和电路，其中根据削波电平从亮度前景信号导出键信号 。 为了避免在具有前景信号（称为“双倍乘法”）的产品形成期间亮度信号的二次依赖性，线性密钥信号应该被双螺旋形成的控制信号所代替，使得 消除了不需要的二次依赖。

公开(公告)号：US5444496A

公开(公告)日：1995-08-22

申请号：US190429

申请日：1994-02-02

申请人： Rainer Gehrmann

发明人： Rainer Gehrmann

IPC分类号： G06T7/00 ,  H04N9/75

CPC分类号： H04N9/75

摘要： In a method of separating a foreground picture signal FG from a mixed picture signal MG which has a key color KC as well as transition colors to this key color in key regions, the foreground picture signal is removed from the key color and the transition colors in accordance with the equationFG=MG-k*KC.Herein, k is a control signal which has a value of about 1 in the region of the key color KC and a value of about 0 at the transition boundaries. The transition boundaries in the C.sub.b /C.sub.r color plane are constituted by two straight lines through the origin of the C.sub.b /C.sub.r, color plane which, relative to a vector D.sub.KC of the key color extending from the origin of the C.sub.b /C.sub.r color plane to the color location KC of the key color, are arranged at angles .omega..sub.o and .omega..sub.u, respectively. The straight lines through the origin of the C.sub.b /C.sub.r, color plane are arranged automatically and optimally in that those pixels are filtered from the mixed picture signal whose color locations in the C.sub.b /C.sub.r color plane are spaced apart by a distance which is smaller than a predetermined distance from color locations of one or more pixels adjoining one another with respect to time or location, in that accumulations of the filtered pixels are determined and in that the angles .omega..sub.o and .omega..sub.u of the two straight lines through the origin of the C.sub.b /C.sub.r color plane are chosen to be such that the accumulations closest to the key color KC in the C.sub.b /C.sub.r, color plane are not located in the region between the key color KC and the transition boundaries constituted by the straight lines through the origin of the C.sub.b /C.sub.r color plane.

摘要翻译： 在将前景图像信号FG与具有键颜色KC的混合图像信号MG以及键区域中的该颜色的过渡颜色分离的方法中，前景图像信号从键颜色和过渡颜色中去除 根据方程FG = MG-k * KC。 这里，k是在键颜色KC的区域中具有大约1的值的控制信号，并且在转变边界处具有约0的值。 Cb / Cr颜色平面中的过渡边界由通过Cb / Cr，彩色平面的原点的两条直线构成，相对于从Cb / Cr颜色平面的原点延伸的键颜色的矢量DKC， 键颜色的颜色位置KC分别以角度ω和ωu排列。 通过Cb / Cr，彩色平面的原点的直线被自动和最佳地排列，这些像素被从混合图像信号中滤出，其混合图像信号的Cb / Cr色彩平面中的颜色位置被间隔开一个小于 确定了相对于时间或位置彼此相邻的一个或多个像素的颜色位置的预定距离，在滤波像素的累积中确定了两条直线穿过Cb原点的角度ω和ωu / Cr颜色平面被选择为使得最接近Cb / Cr色平面中的键颜色KC的积分不位于由键颜色KC和由通过原点的直线构成的过渡边界之间的区域中 Cb / Cr色平面。

公开(公告)号：US5381184A

公开(公告)日：1995-01-10

申请号：US986329

申请日：1992-12-07

申请人： Rainer Gehrmann

发明人： Rainer Gehrmann

IPC分类号： H04N5/272 ,  H04N9/75 ,  H04N9/74

CPC分类号： H04N9/75

摘要： In a method of and an arrangement for inserting a background signal into parts of a foreground signal fixed by a predetermined key color, in which a control signal is derived from the foreground signal, this control signal assuming a first value when the foreground signal represents a color in the region of the key color and a second value when the foreground signal represents a different color, and in which the control signal has a transition range between the two values, a difference, influenced by the control signal, between the vector of the background signal and the vector of a signal representing the key color is vectorially added to the foreground signal.

摘要翻译： 在将背景信号插入到由前景信号导出控制信号的预定键颜色固定的前景信号的部分中的方法和装置中，当前景信号表示为 当前景信号表示不同的颜色时，控制信号具有两个值之间的转变范围，即受控制信号影响的差异，在该色彩的向量 背景信号和表示键颜色的信号的向量被矢量地加到前景信号上。

公开(公告)号：US4709192A

公开(公告)日：1987-11-24

申请号：US819512

申请日：1985-12-12

申请人： Rainer Gehrmann

发明人： Rainer Gehrmann

IPC分类号： H04N5/228 ,  H01J29/56

CPC分类号： H04N5/228

摘要： A process for avoiding non-linearities and brightening on the television picture tube includes the generating of an additional signal of a higher frequency than that of the deflections signals, the separating of the additional signal into signal parts of opposite polarity, and the addition of the two additional signal parts to the deflection signals during time intervals immediately before and after the return movement period.

摘要翻译： PCT No.PCT / DE85 / 00195 Sec。 371日期1985年12月12日第 102（e）日期1985年12月12日PCT Filed 1985年6月1日PCT公布。 公开号WO86 / 00187 日期：1986年1月3日。用于避免电视显像管上的非线性和增白的过程包括产生比偏转信号更高频率的附加信号，将附加信号分离成相反的信号部分 极性，以及在返回移动期间之前和之后的时间间隔期间将两个附加信号部分添加到偏转信号。

公开(公告)号：US6141063A

公开(公告)日：2000-10-31

申请号：US937312

申请日：1997-09-22

申请人： Rainer Gehrmann

发明人： Rainer Gehrmann

IPC分类号： H04N5/272 ,  H04N9/75 ,  H04N9/74

CPC分类号： H04N9/75 ,  H04N5/272

摘要： A method and an arrangement for generating a composite video signal in accordance with the chroma-key method in which a virtual background spill signal is generated and added to the composite video signal to avoid darkening effects which are produced when eliminating spill light, and to eliminate brightening effects which are produced in "clean-up" operations. The background spill signal may consist of the product of a virtual spill signal source (SP) and a control signal (k.sub.3). The control signal (k.sub.3) is preferably the difference between a foreground control signal (k.sub.1) and a background control signal (k.sub.2), and both signals should be identical in the foreground and background ranges but different in spill ranges.

摘要翻译： 一种根据色度键法生成复合视频信号的方法和装置，其中生成虚拟背景溢出信号并将其添加到复合视频信号，以避免在消除溢出光时产生的变暗效应，并消除 在“清理”操作中产生的增白效应。 背景溢出信号可以由虚拟溢出信号源（SP）和控制信号（k3）的乘积组成。 控制信号（k3）优选地是前景控制信号（k1）和背景控制信号（k2）之间的差，并且两个信号在前景和背景范围中应当相同，但在溢出范围内是不同的。

公开(公告)号：US5719640A

公开(公告)日：1998-02-17

申请号：US526677

申请日：1995-09-11

申请人： Rainer Gehrmann

发明人： Rainer Gehrmann

IPC分类号： H04N5/275 ,  H04N9/75 ,  H04N9/74

CPC分类号： H04N9/75

摘要： A chromakey method and an associated circuit arrangement are intended for treating transition colors in color keying in which transition colors occur in video pictures, for example at the edges between foreground objects and the key color of the background of these objects. For the proposed treatment of the transition colors, inter alia the keying function (k) plays a decisive role. It indicates the key color component for each transition color. To define this keying function (k), parameters are applied to a computer (C), which parameters fix a key color (.vertline.KC.vertline.,.theta.,.PHI.), a transition color (Cb, Cr, Y) and a boundary region (.alpha.,.beta.). In the color space, the boundary region separates the color of the foreground of a video picture from all other colors which may occur in the video picture. The keying function (k) is determined by way of the equation for the boundary.

摘要翻译： 彩色方法和相关的电路装置旨在用于处理颜色键控中的转换颜色，其中在视频图像中出现过渡颜色，例如在前景对象与这些对象的背景的键颜色之间的边缘处。 对于拟议的过渡颜色的处理，特别是键控函数（k）起着决定性的作用。 它表示每个过渡颜色的关键颜色分量。 为了定义该键控函数（k），将参数应用于计算机（C），哪些参数固定键颜色（| KC |，θ，PHI），过渡颜色（Cb，Cr，Y）和边界区域 α，β）。 在颜色空间中，边界区域将视频图像的前景的颜色与视频图像中可能出现的所有其它颜色区分开。 键控函数（k）通过边界方程来确定。

公开(公告)号：US5455633A

公开(公告)日：1995-10-03

申请号：US111684

申请日：1993-08-25

申请人： Rainer Gehrmann

发明人： Rainer Gehrmann

IPC分类号： H04N5/275 ,  H04N9/75 ,  H04J9/75

CPC分类号： H04N9/75 ,  H04N5/275

摘要： In a chroma-key method for inserting a background picture signal into key color-characterized key regions of a foreground picture signal, in which method fading operations are performed between the picture signals in proportional zones in dependence upon a control signal, while intermediate colors occurring in the proportional zones in the foreground signal are transformed into new intermediate colors which constitute a transition from the color of the foreground picture signal to that of the background signal, an optimal adaptation of the proportional zone to the respective color location of a foreground picture signal region is ensured in that individual proportional zones for regions of different color locations in the foreground picture signal are fixed in such a way that the distance between the color location of each region and the color location of the key color is determined individually for each region, and in that the control signal is generated for each region in dependence upon the color location distance determined for the respective region.

摘要翻译： 在用于将背景图像信号插入到前景图像信号的关键颜色特征密钥区域中的色度键方法中，其中根据控制信号在比例区域中的图像信号之间进行衰落操作，同时发生中间颜色 在前景信号中的比例区域被变换成新的中间色，它们构成从前景画面信号的颜色到背景信号的颜色的转换，比例区域与前景画面信号的各个颜色位置的最佳适应 确保在前景图像信号中的不同颜色位置的区域的各个比例区域以这样的方式被固定，使得每个区域的颜色位置与颜色的颜色位置之间的距离针对每个区域单独确定， 并且依赖于每个区域产生控制信号 根据为各个区域确定的颜色位置距离。