公开(公告)号：US07420624B2

公开(公告)日：2008-09-02

申请号：US11181847

申请日：2005-07-15

申请人： Chih-Ming Lin ,  Wei-Hsin Gu

发明人： Chih-Ming Lin ,  Wei-Hsin Gu

IPC分类号： H04N9/78 ,  H04N9/77

CPC分类号： H04N9/78

摘要： A three-dimensional video composite signal demodulating method and system capable of inhibiting pseudo-color noises. The system has a two-dimensional luminance and chroma signal separator, a three-dimensional luminance and chroma signal separator, a luminance weighting device, a chroma weighting device and a band pass filter. The method applies the two-dimensional luminance and chroma signal separator to obtain a two-dimensional luminance and chroma signal of a pixel, next the three-dimensional luminance and chroma signal separator to determine the pixel still or not according to a two-dimensional luminance and chroma signal change between a current frame and its previous and following frames with respect to the pixel, and gives appropriate weights to luminance and chroma signals generated by the two-dimensional and the three-dimensional luminance and chroma signal separators respectively, thereby respectively adding and obtaining separated luminance and chroma signals of the pixel.

摘要翻译： 一种能够抑制伪色噪声的三维视频复合信号解调方法和系统。 该系统具有二维亮度和色度信号分离器，三维亮度和色度信号分离器，亮度加权装置，色度加权装置和带通滤波器。 该方法应用二维亮度和色度信号分离器以获得像素的二维亮度和色度信号，接下来是三维亮度和色度信号分离器，以根据二维亮度确定像素 并且色度信号相对于像素在当前帧与其前一帧和后续帧之间改变，并且分别对由二维和三维亮度和色度信号分离器产生的亮度和色度信号给出适当的权重，从而分别添加 并获得像素的分离的亮度和色度信号。

公开(公告)号：US07502515B2

公开(公告)日：2009-03-10

申请号：US10843387

申请日：2004-05-12

申请人： Wei-Hsin Gu ,  Kun-Wei Lin ,  Chun-Hung Lin

发明人： Wei-Hsin Gu ,  Kun-Wei Lin ,  Chun-Hung Lin

IPC分类号： G06K9/36

CPC分类号： G06F3/0317 ,  G06K9/6203 ,  G06T7/20

摘要： A method for detecting sub-pixel motion for an optical navigation device is disclosed. The method calculates the displacement of the sub-pixel motion according to brightness curve equations of captured images, which is represented by positional coordinates x and y. The detection method includes capturing a first image frame and a second image frame at different times, selecting plural pixels from the first image frame as calculation reference pixels, generating brightness curve equations of the reference pixels, calculating partial-derivatives of the reference pixel to generate a plurality of two-dimensional first-order equations, and calculating the sub-pixel motion according to the plurality of the two-dimensional first-order equations. The method can reduce the pixel noise by choosing reliable pixels as the reference pixels. The method also reduce the noise by classifying the reference pixels.

摘要翻译： 公开了一种用于检测光学导航装置的子像素运动的方法。 该方法根据由位置坐标x和y表示的拍摄图像的亮度曲线方程计算子像素运动的位移。 检测方法包括在不同时间拍摄第一图像帧和第二图像帧，从第一图像帧中选择多个像素作为计算参考像素，生成参考像素的亮度曲线方程，计算参考像素的偏导数以产生 多个二维一阶方程，并且根据多个二维一阶方程计算子像素运动。 该方法可以通过选择可靠的像素作为参考像素来减少像素噪声。 该方法还通过对参考像素进行分类来降低噪声。

公开(公告)号：US20050089196A1

公开(公告)日：2005-04-28

申请号：US10843387

申请日：2004-05-12

申请人： Wei-Hsin Gu ,  Kun-Wei Lin ,  Chun-Hung Lin

发明人： Wei-Hsin Gu ,  Kun-Wei Lin ,  Chun-Hung Lin

IPC分类号： G01B11/00 ,  G06F3/03 ,  G06F17/10 ,  G06K9/00 ,  G06K9/46 ,  G06K9/64 ,  G06T7/20

CPC分类号： G06F3/0317 ,  G06K9/6203 ,  G06T7/20

摘要： A method for detecting sub-pixel motion for an optical navigation device is disclosed. The method calculates the displacement of the sub-pixel motion according to brightness curve equations of captured images, which is represented by positional coordinates x and y. The detection method includes capturing a first image frame and a second image frame at different times, selecting plural pixels from the first image frame as calculation reference pixels, generating brightness curve equations of the reference pixels, calculating partial-derivatives of the reference pixel to generate a plurality of two-dimensional first-order equations, and calculating the sub-pixel motion according to the plurality of the two-dimensional first-order equations. The method can reduce the pixel noise by choosing reliable pixels as the reference pixels. The method also reduce the noise by classifying the reference pixels.

摘要翻译： 公开了一种用于检测光学导航设备的子像素运动的方法。 该方法根据由位置坐标x和y表示的拍摄图像的亮度曲线方程计算子像素运动的位移。 检测方法包括在不同时间拍摄第一图像帧和第二图像帧，从第一图像帧中选择多个像素作为计算参考像素，生成参考像素的亮度曲线方程，计算参考像素的偏导数以产生 多个二维一阶方程，并且根据多个二维一阶方程计算子像素运动。 该方法可以通过选择可靠的像素作为参考像素来减少像素噪声。 该方法还通过对参考像素进行分类来降低噪声。

公开(公告)号：US20060044473A1

公开(公告)日：2006-03-02

申请号：US11181847

申请日：2005-07-15

申请人： Chih-Ming Lin ,  Wei-Hsin Gu

发明人： Chih-Ming Lin ,  Wei-Hsin Gu

IPC分类号： H04N9/77

CPC分类号： H04N9/78

摘要： A three-dimensional video composite signal demodulating method and system capable of inhibiting pseudo-color noises. The system has a two-dimensional luminance and chroma signal separator, a three-dimensional luminance and chroma signal separator, a luminance weighting device, a chroma weighting device and a band pass filter. The method applies the two-dimensional luminance and chroma signal separator to obtain a two-dimensional luminance and chroma signal of a pixel, next the three-dimensional luminance and chroma signal separator to determine the pixel still or not according to a two-dimensional luminance and chroma signal change between a current frame and its previous and following frames with respect to the pixel, and gives appropriate weights to luminance and chroma signals generated by the two-dimensional and the three-dimensional luminance and chroma signal separators respectively, thereby respectively adding and obtaining separated luminance and chroma signals of the pixel.

摘要翻译： 一种能够抑制伪色噪声的三维视频复合信号解调方法和系统。 该系统具有二维亮度和色度信号分离器，三维亮度和色度信号分离器，亮度加权装置，色度加权装置和带通滤波器。 该方法应用二维亮度和色度信号分离器以获得像素的二维亮度和色度信号，接下来是三维亮度和色度信号分离器，以根据二维亮度确定像素 并且色度信号相对于像素在当前帧与其前一帧和后续帧之间改变，并且分别对由二维和三维亮度和色度信号分离器产生的亮度和色度信号给出适当的权重，从而分别添加 并获得像素的分离的亮度和色度信号。