首页>
外国专利>
VIDEO NOISE REDUCTION APPARATUS AND METHOD USING THREE DIMENSIONAL DISCRETE COSINE TRANSFORMS AND NOISE MEASUREMENT
VIDEO NOISE REDUCTION APPARATUS AND METHOD USING THREE DIMENSIONAL DISCRETE COSINE TRANSFORMS AND NOISE MEASUREMENT
展开▼
机译:使用三维离散余弦变换和噪声测量的视频降噪装置及方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A noise component of a video signal is reduced by using a three dimensional discrete cosign transform (3-D DCT) to determine the time frequency spectrum of both the video signal and the noise component, subtracting the time frequency spectrum of the noise component from the time frequency spectrum of the video signal, and converting the time frequency spectrum of the modified video signal back to the spatial time domain by using an inverse 3-D DCT.
展开▼