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    • 66. 发明授权
    • Protection filter for image and video processing
    • 用于图像和视频处理的保护滤波器
    • US09105081B2
    • 2015-08-11
    • US12206404
    • 2008-09-08
    • Daniel WongPeter Cao
    • Daniel WongPeter Cao
    • H04N7/50G06T5/00G06T5/20G06T5/50
    • G06T5/002G06T5/003G06T5/20G06T5/50G06T2207/10016G06T2207/20182G06T2207/20201
    • A filter includes a conventional filtering block and a protection block. The conventional filtering block receives input values and provides filtered values. The protection block receives filtered values and a group of input values proximate the current input, to ensure that the output is lies within a range computed for the current input. The range is determined by the protection block based on the group of input values proximate the current input. Any algorithm or statistical function may be applied to the group of input values to determine the range. If a filtered value provided by the conventional filtering block is outside the range, then the protection block computes and outputs a value that is within the range. The filter may be used in temporal or spatial filtering of images and video to mitigate artifacts such as motion artifacts and static artifacts.
    • 滤波器包括常规滤波块和保护块。 传统的滤波块接收输入值并提供滤波值。 保护块接收过滤的值和接近当前输入的一组输入值,以确保输出位于为当前输入计算的范围内。 该范围由基于当前输入附近的输入值组的保护块确定。 可以将任何算法或统计功能应用于输入值组以确定范围。 如果由常规滤波块提供的滤波值超出该范围,则保护块计算并输出在该范围内的值。 滤波器可以用于图像和视频的时间或空间滤波,以减轻诸如运动伪像和静态伪像之类的伪影。