公开(公告)号：US07477804B2

公开(公告)日：2009-01-13

申请号：US10987615

申请日：2004-11-12

申请人： Hwe-Ihn Chung ,  Yong-In Han

发明人： Hwe-Ihn Chung ,  Yong-In Han

IPC分类号： G06K9/32

CPC分类号： G06T3/403

摘要： The present invention is an interpolation device and method. According to the present invention, a plurality of pixels close to a pixel to be interpolated are sequentially set to a central pixel. When a pixel difference closest to a threshold value among pixel differences between the central pixel and a plurality of pixels around the central pixel belongs to a quasi-edge decision range, an edge interpolation and a bilinear interpolation are mixed to interpolate the pixel to be interpolated. As a result, it is possible to prevent reduction in image quality due to an edge verdict caused by unstable input image signal and perform a stable interpolation operation.

摘要翻译： 本发明是一种内插装置和方法。 根据本发明，靠近要插值的像素的多个像素被顺序地设置到中心像素。 当中心像素与中心像素周围的多个像素之间的像素差最接近阈值的像素差属于准边缘判定范围时，将边缘插值和双线性插值混合以内插待内插的像素 。 结果，可以防止由于不稳定的输入图像信号导致的边缘判定造成的图像质量的降低，并且执行稳定的插值操作。

公开(公告)号：US20090154830A1

公开(公告)日：2009-06-18

申请号：US12331983

申请日：2008-12-10

申请人： HWE-IHN CHUNG ,  YONG-IN HAN

发明人： HWE-IHN CHUNG ,  YONG-IN HAN

IPC分类号： G06K9/40 ,  G06K9/32

CPC分类号： G06T3/403

摘要： The present invention is an interpolation device and method. According to the present invention, a plurality of pixels close to a pixel to be interpolated are sequentially set to a central pixel. When a pixel difference closest to a threshold value among pixel differences between the central pixel and a plurality of pixels around the central pixel belongs to a quasi-edge decision range, an edge interpolation and a bilinear interpolation are mixed to interpolate the pixel to be interpolated. As a result, it is possible to prevent reduction in image quality due to an edge verdict caused by unstable input image signal and perform a stable interpolation operation.

摘要翻译： 本发明是一种内插装置和方法。 根据本发明，靠近要插值的像素的多个像素被顺序地设置到中心像素。 当中心像素与中心像素周围的多个像素之间的像素差最接近阈值的像素差属于准边缘判定范围时，将边缘插值和双线性插值混合以内插待内插的像素 。 结果，可以防止由于不稳定的输入图像信号导致的边缘判定造成的图像质量的降低，并且执行稳定的插值操作。

公开(公告)号：US20050105830A1

公开(公告)日：2005-05-19

申请号：US10987615

申请日：2004-11-12

申请人： Hwe-Ihn Chung ,  Yong-In Han

发明人： Hwe-Ihn Chung ,  Yong-In Han

IPC分类号： H04N5/44 ,  G06K9/32 ,  G06K9/40

CPC分类号： G06T3/403

摘要： The present invention is an interpolation device and method. According to the present invention, a plurality of pixels close to a pixel to be interpolated are sequentially set to a central pixel. When a pixel difference closest to a threshold value among pixel differences between the central pixel and a plurality of pixels around the central pixel belongs to a quasi-edge decision range, an edge interpolation and a bilinear interpolation are mixed to interpolate the pixel to be interpolated. As a result, it is possible to prevent reduction in image quality due to an edge verdict caused by unstable input image signal and perform a stable interpolation operation.

摘要翻译： 本发明是一种内插装置和方法。 根据本发明，靠近要插值的像素的多个像素被顺序地设置到中心像素。 当中心像素与中心像素周围的多个像素之间的像素差最接近阈值的像素差属于准边缘判定范围时，将边缘插值和双线性插值混合以内插待内插的像素 。 结果，可以防止由于不稳定的输入图像信号引起的边缘判定造成的图像质量的降低，并且执行稳定的插值操作。

公开(公告)号：US06674906B1

公开(公告)日：2004-01-06

申请号：US09492589

申请日：2000-01-27

申请人： Yong In Han ,  Hwe-ihn Chung

发明人： Yong In Han ,  Hwe-ihn Chung

IPC分类号： G06K948

CPC分类号： G06T7/12 ,  G06T2207/30176

摘要： A method and apparatus for detecting edges by which the detection of the edges of a natural image from an image obtained by mixing the graphic or text and the natural image is suppressed, to thereby stably detect edges of the graphic or the text, are disclosed. In this method, the differences in pixel value between the first pixel of sequentially input images and eight pixels adjacent to the first pixel are obtained. If all of the differences between the first pixel and the eight pixels adjacent to the first pixel are greater than a maximum threshold value or less than a minimum threshold value, the first pixel is determined to be an edge pixel. Likewise, determinations are made as to whether a second pixel, positioned adjacent the first pixel along a first dimension (for example to the left of the first pixel), is an edge pixel and whether a third pixel, positioned adjacent the first pixel along a second dimension (for example above the first pixel), is an edge pixel. Next, if at least one of the first pixel and the second pixel is determined as an edge pixel and if the difference between the first pixel and the second pixel is greater than the maximum threshold value, it is determined that the left edge of the first pixel exists. Also, if at least one of the first pixel and the third pixel is an edge pixel and the difference between the first pixel and the third pixel is greater than the maximum threshold value, it is determined that the upper edge of the first pixel exists.

摘要翻译： 公开了一种用于检测边缘的方法和装置，通过该边缘检测从通过混合图形或文本和自然图像获得的图像中的自然图像的边缘的检测，从而稳定地检测图形或文本的边缘。 在该方法中，获得顺序输入图像的第一像素与与第一像素相邻的八个像素之间的像素值的差异。 如果第一像素与与第一像素相邻的八个像素之间的所有差异大于最大阈值或小于最小阈值，则将第一像素确定为边缘像素。 同样，确定沿着第一维度（例如，第一像素的左侧）定位在第一像素附近的第二像素是否为边缘像素，以及沿着第一像素沿着第一像素位于第一像素周围的第三像素 第二维度（例如高于第一像素）是边缘像素。 接下来，如果第一像素和第二像素中的至少一个被确定为边缘像素，并且如果第一像素和第二像素之间的差大于最大阈值，则确定第一像素和第二像素的左边缘 像素存在。 此外，如果第一像素和第三像素中的至少一个是边缘像素，并且第一像素和第三像素之间的差大于最大阈值，则确定存在第一像素的上边缘。

公开(公告)号：US07719614B2

公开(公告)日：2010-05-18

申请号：US11248457

申请日：2005-10-12

申请人： Hwe-ihn Chung ,  Sang-ha Hwang ,  Byeong-du La

发明人： Hwe-ihn Chung ,  Sang-ha Hwang ,  Byeong-du La

IPC分类号： H04N11/20

CPC分类号： H04N7/01 ,  G09G3/3611 ,  G09G5/006 ,  G09G5/18 ,  G09G2340/0435 ,  H04N5/45 ,  H04N5/70 ,  H04N9/641 ,  H04N21/4316 ,  H04N21/440281

摘要： In an apparatus and method for converting the frame rate of an image signal in a display system without an external memory, the display system and method are capable of down converting the frame rate of an image signal using a frame rate conversion unit without an external memory. The system and method can be used even in the case where the frequencies of input and output synchronization signals are locked to the same frame rate. The frame rate conversion unit disable-masks portions of the frames of a data enable signal or a vertical synchronization signal, thus canceling the portions of the frames, and outputs the masked data enable signal or the masked vertical synchronization signal to an LCD driving circuit unit, thereby down converting the frame rate of the image signal.

摘要翻译： 在没有外部存储器的情况下，在显示系统中转换图像信号的帧速率的装置和方法中，显示系统和方法能够使用不具有外部存储器的帧速率转换单元来降低图像信号的帧速率 。 即使在输入和输出同步信号的频率被锁定到相同帧速率的情况下也可以使用该系统和方法。 帧速率转换单元对数据使能信号或垂直同步信号的帧的部分进行禁用，从而抵消帧的部分，并将屏蔽的数据使能信号或屏蔽的垂直同步信号输出到LCD驱动电路单元 从而降低图像信号的帧速率。

公开(公告)号：US20060077290A1

公开(公告)日：2006-04-13

申请号：US11248457

申请日：2005-10-12

申请人： Hwe-ihn Chung ,  Sang-ha Hwang ,  Byeong-du La

发明人： Hwe-ihn Chung ,  Sang-ha Hwang ,  Byeong-du La

IPC分类号： G09G5/00 ,  H04N7/01

CPC分类号： H04N7/01 ,  G09G3/3611 ,  G09G5/006 ,  G09G5/18 ,  G09G2340/0435 ,  H04N5/45 ,  H04N5/70 ,  H04N9/641 ,  H04N21/4316 ,  H04N21/440281

摘要： In an apparatus and method for converting the frame rate of an image signal in a display system without an external memory, the display system and method are capable of down converting the frame rate of an image signal using a frame rate conversion unit without an external memory. The system and method can be used even in the case where the frequencies of input and output synchronization signals are locked to the same frame rate. The frame rate conversion unit disable-masks portions of the frames of a data enable signal or a vertical synchronization signal, thus canceling the portions of the frames, and outputs the masked data enable signal or the masked vertical synchronization signal to an LCD driving circuit unit, thereby down converting the frame rate of the image signal.

摘要翻译： 在没有外部存储器的情况下，在显示系统中转换图像信号的帧速率的装置和方法中，显示系统和方法能够使用不具有外部存储器的帧速率转换单元来降低图像信号的帧速率 。 即使在输入和输出同步信号的频率被锁定到相同帧速率的情况下也可以使用该系统和方法。 帧速率转换单元对数据使能信号或垂直同步信号的帧的部分进行禁用，从而抵消帧的部分，并将屏蔽的数据使能信号或屏蔽的垂直同步信号输出到LCD驱动电路单元 从而降低图像信号的帧速率。