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    • 4. 发明申请
    • SYSTEM AND METHOD FOR BLOCK EDGE LOCATION WITH VARYING BLOCK SIZES AND OFFSETS IN COMPRESSED DIGITAL VIDEO
    • 用于压缩数字视频中具有变化块大小和偏移的块边缘位置的系统和方法
    • US20100226573A1
    • 2010-09-09
    • US12396877
    • 2009-03-03
    • Surapong LertrattanapanichYeong-Taeg Kim
    • Surapong LertrattanapanichYeong-Taeg Kim
    • G06K9/00
    • G06T7/13G06T2207/10016
    • Embodiments include systems and methods of determining block edge location in video. In one embodiment, a system includes a block edge map generator configured to generate a binary block map, the block map having indicators representing the locations of block edges in a first direction, a histogram generator configured to accumulate the indicators to form a block edge histogram, the peaks of the histogram corresponding to block edge locations in the image, a low-pass filter to low-pass filter the block edge histogram and form a filtered histogram, a peak locator configured to identify the peaks of the filtered histogram, and a peak refiner configured to refine locations of peaks located in the filtered block edge histogram based on the identified peaks and peaks in the block edge histogram, the refined peak locations indicative of block edge locations, and further configured to provide block locations.
    • 实施例包括确定视频中的块边缘位置的系统和方法。 在一个实施例中,系统包括块边缘图生成器,其被配置为生成二进制块映射,块映射表具有表示第一方向上的块边沿的位置的指示符;直方图生成器,被配置为累积指示符以形成块边缘直方图 ,对应于图像中的块边缘位置的直方图的峰值,低通滤波器以低通滤波块边缘直方图并形成滤波直方图,峰值定位器被配置为识别滤波的直方图的峰值,以及 峰值精细器被配置为基于所识别的块边缘直方图中的峰值和峰值,精确的峰值位置,指示块边缘位置,以及进一步被配置为提供块位置,来精细位于经滤波的块边缘直方图中的峰的位置。
    • 6. 发明申请
    • Line thinning method and system for grayscale image
    • 线型薄化方法和灰度图像系统
    • US20070104386A1
    • 2007-05-10
    • US11272196
    • 2005-11-10
    • Surapong LertrattanapanichYeong-Taeg Kim
    • Surapong LertrattanapanichYeong-Taeg Kim
    • G06K9/38
    • G06K9/44
    • A line thinning algorithm (LTA) for a grayscale input image, wherein the LTA is a separable algorithm that performs on each row of input grayscale image sequentially from top to bottom and subsequently on each column from left to right, independently. The LTA is very robust to the noise and is capable of thinning lines even in noisy image areas. The level of thinning is fully adaptive to the transition range and dynamic range locally in each line segment. Furthermore, the LTA for a black line can be easily generalized for a white line counterpart by simply switching the sign of one parameter DELTA from positive to negative without changing other aspects of the LTA.
    • 一种用于灰度输入图像的线稀疏算法(LTA),其中LTA是可以独立地从上到下依次从上到下依次执行每行输入灰度图像的分离算法。 LTA对噪声非常强大,即使在嘈杂的图像区域也能够使线条变薄。 稀疏水平完全适应每个线段局部的过渡范围和动态范围。 此外,通过简单地将一个参数DELTA的符号从正切换到负,而不改变LTA的其他方面,用于黑线的LTA可以容易地泛化为白线对应物。
    • 7. 发明申请
    • Pre-compensation of high frequency component in a video scaler
    • 视频缩放器中高频分量的预补偿
    • US20070070248A1
    • 2007-03-29
    • US11236919
    • 2005-09-27
    • Zhi ZhouSurapong LertrattanapanichYeong-Taeg Kim
    • Zhi ZhouSurapong LertrattanapanichYeong-Taeg Kim
    • H04N9/74
    • H04N5/208G06T3/4084
    • A video scaling process system, wherein the high frequency components of the input video sequence are compensated for, prior to video scaling. The video scaling system includes a pre-compensator for compensation of the high frequency components of the input video sequence, and a video scaler. The pre-compensator includes a high frequency component extractor, a noise detector and a shoot suppressor. The high frequency component extractor extracts the high frequency compensation component from an input video sequence. The noise detector adjusts the gain of the compensation to avoid the enhancement of the noise component. The shoot suppressor further adjusts the gain of the compensation to avoid shoot artifacts. The adjusted high frequency compensated video is added back to the input video. The pre-compensated video sequence is then passed through a video scaler to obtain the scaled video. As such, the sharpness of the scaled video is maintained or even enhanced.
    • 一种视频缩放处理系统,其中在视频缩放之前补偿输入视频序列的高频分量。 视频缩放系统包括用于补偿输入视频序列的高频分量的预补偿器和视频缩放器。 预补偿器包括高频分量提取器,噪声检测器和拍摄抑制器。 高频分量提取器从输入视频序列中提取高频补偿分量。 噪声检测器调整补偿的增益,以避免噪声分量的增强。 拍摄抑制器进一步调整补偿的增益以避免拍摄伪影。 经调整的高频补偿视频被添加回输入视频。 然后,预补偿视频序列通过视频缩放器传递以获得缩放的视频。 因此,缩放视频的清晰度得以维持甚至提高。
    • 8. 发明授权
    • System and method for block edge location with varying block sizes and offsets in compressed digital video
    • 用于块边缘位置的系统和方法,具有不同的块大小和压缩数字视频中的偏移量
    • US08363978B2
    • 2013-01-29
    • US12396877
    • 2009-03-03
    • Surapong LertrattanapanichYeong-Taeg Kim
    • Surapong LertrattanapanichYeong-Taeg Kim
    • G06K9/40
    • G06T7/13G06T2207/10016
    • Embodiments include systems and methods of determining block edge location in video. In one embodiment, a system includes a block edge map generator configured to generate a binary block map, the block map having indicators representing the locations of block edges in a first direction, a histogram generator configured to accumulate the indicators to form a block edge histogram, the peaks of the histogram corresponding to block edge locations in the image, a low-pass filter to low-pass filter the block edge histogram and form a filtered histogram, a peak locator configured to identify the peaks of the filtered histogram, and a peak refiner configured to refine locations of peaks located in the filtered block edge histogram based on the identified peaks and peaks in the block edge histogram, the refined peak locations indicative of block edge locations, and further configured to provide block locations.
    • 实施例包括确定视频中的块边缘位置的系统和方法。 在一个实施例中,系统包括块边缘图生成器,其被配置为生成二进制块映射,块映射表具有表示第一方向上的块边沿的位置的指示符;直方图生成器,被配置为累积指示符以形成块边缘直方图 ,对应于图像中的块边缘位置的直方图的峰值,低通滤波器以低通滤波块边缘直方图并形成滤波直方图,峰值定位器被配置为识别滤波的直方图的峰值,以及 峰值精细器被配置为基于所识别的块边缘直方图中的峰值和峰值,精确的峰值位置,指示块边缘位置,以及进一步被配置为提供块位置,来精细位于经滤波的块边缘直方图中的峰的位置。