会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明公开
    • 주파수 해석에 따른 저조도 환경의 적응적 잡음제거 기술
    • 使用频域分析的低光级环境的自适应降噪
    • KR1020130072399A
    • 2013-07-02
    • KR1020110139791
    • 2011-12-22
    • 이성원
    • 이정윤이성원
    • H04N5/21
    • H04N5/21
    • PURPOSE: An adaptive noise cancellation technology for low illuminance environment according to the frequency analysis is provided to convert an image into the frequency domain, to recover the image character of each pixel, and to adaptively perform the noise cancellation according to the image character, thereby efficiently removing the noise of image with serious noise. CONSTITUTION: An image is converted into a frequency domain by using two-dimensional (2D) cosine transform. A one-dimensional (1D) frequency domain is made up by using zigzag scanning in order to convert the frequency domain into the 1D frequency domain. A part excluding direct current (DC) from the converted frequency domain is separated into four kinds of bands. The dispersion of each band is calculated. If the dispersion of one band is larger than the other domain, an adaptive noise cancellation is performed.
    • 目的:提供根据频率分析的低照度环境的自适应噪声消除技术,将图像转换为频域,恢复每个像素的图像特征,并根据图像特征自适应地执行噪声消除,从而 有效去除噪音严重的图像噪声。 构成:通过使用二维(2D)余弦变换将图像转换为频域。 通过使用Z字形扫描来构成一维(1D)频域,以将频域转换成1D频域。 从转换频域排除直流(DC)的部分分为四种频带。 计算每个频带的色散。 如果一个频带的色散大于另一个频带,则执行自适应噪声消除。