-
公开(公告)号：US07098958B2
公开(公告)日：2006-08-29
申请号：US10834760
申请日：2004-04-28
CPC分类号： H04N5/142 , H04N5/144 , H04N7/0115 , H04N7/012 , H04N7/0137 , H04N7/0142 , H04N19/117 , H04N19/139 , H04N19/51
摘要： An adaptive filter calculates a target pixel from an interlaced video signal. The video signal comprises a plurality of frames, each of which comprises an even and an odd field. The filter comprises a quantized motion calculator and a filter selector. The quantized motion calculator estimates an amount of motion about the target pixel. The filter selector selects a filter in accordance with the estimated amount of motion. The filter applies a first weighting factor to a plurality of current field pixels and a second weighting factor to a plurality of previous field pixels for creating the target pixel.
摘要翻译： 自适应滤波器从隔行视频信号计算目标像素。 视频信号包括多个帧，每个帧包括偶数和奇数场。 滤波器包括量化运动计算器和滤波器选择器。 量化运动计算器估计关于目标像素的运动量。 滤波器选择器根据估计的运动量选择滤波器。 滤波器对多个当前场像素施加第一加权因子，并将第二加权因子应用于多个先前场像素，以创建目标像素。
-
公开(公告)号：US20060238650A1
公开(公告)日：2006-10-26
申请号：US11456316
申请日：2006-07-10
申请人： Finn G. Wredenhagen , Gary Cheng , Soo Jang , Lance Greggain
发明人： Finn G. Wredenhagen , Gary Cheng , Soo Jang , Lance Greggain
CPC分类号： H04N5/142 , H04N5/144 , H04N7/0115 , H04N7/012 , H04N7/0137 , H04N7/0142 , H04N19/117 , H04N19/139 , H04N19/51
摘要： An adaptive filter calculates a target pixel from an interlaced video signal. The video signal comprises a plurality of frames, each of which comprises an even and an odd field. The filter comprises a quantized motion calculator and a filter selector. The quantized motion calculator estimates an amount of motion about the target pixel. The filter selector selects a filter in accordance with the estimated amount of motion. The filter applies a first weighting factor to a plurality of current field pixels and a second weighting factor to a plurality of previous field pixels for creating the target pixel.
摘要翻译： 自适应滤波器从隔行视频信号计算目标像素。 视频信号包括多个帧，每个帧包括偶数和奇数场。 滤波器包括量化运动计算器和滤波器选择器。 量化运动计算器估计关于目标像素的运动量。 滤波器选择器根据估计的运动量选择滤波器。 滤波器对多个当前场像素施加第一加权因子，并将第二加权因子应用于多个先前场像素，以创建目标像素。
-
公开(公告)号：US06933983B2
公开(公告)日：2005-08-23
申请号：US10155013
申请日：2002-05-28
申请人： G. Finn Wredenhagen , Andrew Elias
发明人： G. Finn Wredenhagen , Andrew Elias
CPC分类号： G06T5/002 , G06T5/20 , G06T7/40 , G06T2207/10016 , G06T2207/20192 , H04N5/208 , H04N5/21
摘要： A method is provided for selecting a filter for interpolating a target pixel for reducing noise in an image. The method comprises the following steps. A plurality of pixels along a predetermined contour is compared with a plurality of predefined patterns. The patterns represent visually significant patterns possible along said contour. A filter is selected from a predefined set of filters in accordance with the results of the comparison.
摘要翻译： 提供了一种用于选择用于内插用于降低图像中的噪声的目标像素的滤波器的方法。 该方法包括以下步骤。 沿着预定轮廓的多个像素与多个预定图案进行比较。 这些图案表示沿着所述轮廓可能的视觉上有意义的图案。 根据比较的结果从预定义的一组滤波器中选择滤波器。
-
公开(公告)号：US07319494B2
公开(公告)日：2008-01-15
申请号：US11131098
申请日：2005-05-16
申请人： G. Finn Wredenhagen , Andrew Elias
发明人： G. Finn Wredenhagen , Andrew Elias
IPC分类号： H04N5/00
CPC分类号： G06T5/002 , G06T5/20 , G06T7/40 , G06T2207/10016 , G06T2207/20192 , H04N5/208 , H04N5/21
摘要： A method is provided for selecting a filter for interpolating a target pixel for reducing noise in an image. The method comprises the following steps. A plurality of pixels along a predetermined contour is compared with a plurality of predefined patterns. The patterns represent visually significant patterns possible along said contour. A filter is selected from a predefined set of filters in accordance with the results of the comparison.
摘要翻译： 提供了一种用于选择用于内插用于降低图像中的噪声的目标像素的滤波器的方法。 该方法包括以下步骤。 沿着预定轮廓的多个像素与多个预定图案进行比较。 这些图案表示沿着所述轮廓可能的视觉上有意义的图 根据比较的结果从预定义的一组滤波器中选择滤波器。
-
公开(公告)号：US07129990B2
公开(公告)日：2006-10-31
申请号：US10024479
申请日：2001-12-21
申请人： G. Finn Wredenhagen , Gary Cheng , Kevin Ng
发明人： G. Finn Wredenhagen , Gary Cheng , Kevin Ng
CPC分类号： H04N7/0112 , H04N7/012
摘要： A system detects a non-video source embedded in a video sequence and provides direction to a deinterlacing algorithm accordingly. The system comprises a signal generator for generating a plurality of signals. The signals are generated in accordance with pixels input from the video sequence. The system further comprises a plurality of pattern detection state machines, each for receiving the signals and for detecting a pattern in the video sequence. The pattern is detected in accordance with a preset threshold, wherein the pattern detection state machine varies the preset threshold in accordance with the received signals. The system further comprises an arbiter state machine coupled with the plurality of pattern detection state machines for governing the pattern detection state machines and for determining whether or not a non-video source is embedded in the video sequence.
-
公开(公告)号：US07154512B2
公开(公告)日：2006-12-26
申请号：US09984001
申请日：2001-10-26
申请人： Lance Greggain
发明人： Lance Greggain
CPC分类号： G06T3/0093 , G06T5/20 , G06T15/04
摘要： A system for generating a target pixel in a target grid from a plurality of source pixels in a source grid, said system comprising, a filter controller for determining a first distance between said target pixel and a source pixel to the left of said target pixel, and a second distance between said target pixel and a source pixel to the right of said target pixel; a left portion lookup circuit for determining filter coefficients for a left portion of said target pixel in accordance with said first difference; a right portion lookup circuit for determining filter coefficients for a right portion of said target pixel in accordance with said second difference; and a filter reconstruction unit for creating a filter in accordance with said left and right portion filter coefficients, said created filter for generating said target pixel from said plurality of source pixels.
-
公开(公告)号：US07142729B2
公开(公告)日：2006-11-28
申请号：US10106060
申请日：2002-03-27
申请人： G. Finn Wredenhagen , Sam Leung , Lance Greggain
发明人： G. Finn Wredenhagen , Sam Leung , Lance Greggain
CPC分类号： G06T3/4007
摘要： A method for interpolating a target pixel from a plurality of source pixels in a high contrast image. The method comprises the following steps. A window of the plurality of source pixels is examined and compared with a plurality of predefined conditions for determining if a structure of significance is present within the window. A filter configuration is selected from a plurality of filter configurations in accordance with results of the comparison. The selected filter is applied to the source pixels for interpolating the target pixel. If the structure of significance is detected in the window, the selected filter best preserves the structure.
摘要翻译： 一种用于在高对比度图像中从多个源像素内插目标像素的方法。 该方法包括以下步骤。 检查多个源像素的窗口并与多个预定条件进行比较，以确定窗口内是否存在有意义的结构。 根据比较结果从多个滤波器配置中选择滤波器配置。 所选择的滤波器被应用于用于内插目标像素的源像素。 如果在窗口中检测到有意义的结构，则所选择的过滤器最好地保留结构。
-
公开(公告)号：US07127123B2
公开(公告)日：2006-10-24
申请号：US10177766
申请日：2002-06-24
申请人： G. Finn Wredenhagen , Peter Ang
发明人： G. Finn Wredenhagen , Peter Ang
CPC分类号： H04N1/4074
摘要： Contrast in an image is enhanced by mapping an input intensity value to an output intensity value in accordance with a mapping function. A mean intensity value of the image is determined. Co-ordinates of the mapping function are calculated in accordance with the mean intensity value and a plurality of predefined parameters. The mapping function is applied to the input intensity value for determining the output intensity, wherein the mapping function is generated dynamically for each image.
摘要翻译： 通过根据映射函数将输入强度值映射到输出强度值来增强图像中的对比度。 确定图像的平均强度值。 根据平均强度值和多个预定参数计算映射函数的坐标。 映射函数被应用于用于确定输出强度的输入强度值，其中对于每个图像动态生成映射函数。
-
公开(公告)号：US20050243205A1
公开(公告)日：2005-11-03
申请号：US11131098
申请日：2005-05-16
申请人： G. Wredenhagen , Andrew Elias
发明人： G. Wredenhagen , Andrew Elias
CPC分类号： G06T5/002 , G06T5/20 , G06T7/40 , G06T2207/10016 , G06T2207/20192 , H04N5/208 , H04N5/21
摘要： A method is provided for selecting a filter for interpolating a target pixel for reducing noise in an image. The method comprises the following steps. A plurality of pixels along a predetermined contour is compared with a plurality of predefined patterns. The patterns represent visually significant patterns possible along said contour. A filter is selected from a predefined set of filters in accordance with the results of the comparison.
-
-
-
-
-
-
-
-
搜索结果
9 条记录 (耗时 0.014 秒)
