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
    • 3. 发明申请
    • Optical Lens Component
    • 光学透镜组件
    • US20100079875A1
    • 2010-04-01
    • US12496602
    • 2009-07-01
    • Zhi Yang
    • Zhi Yang
    • G02B13/18G06F3/01
    • G02B13/0035G02B9/12
    • An optical lens component comprises a fixed diaphragm, a lens group and a filter. The lens group comprises a first, a second and a third lens which is coaxial and arranged successively from object to image. The fixed diaphragm is located on the front of the first lens and the filter is located on the back of the third lens. The first lens comprises a first surface and a second surface; the second lens comprises a third surface and a fourth surface; and the third lens comprises a fifth surface and a sixth surface. The above six surfaces are all aspheric surfaces.
    • 光学透镜部件包括固定光圈,透镜组和滤光片。 透镜组包括从物体到图像连续地同轴并布置的第一,第二和第三透镜。 固定光圈位于第一透镜的前部,滤光片位于第三透镜的背面。 第一透镜包括第一表面和第二表面; 第二透镜包括第三表面和第四表面; 并且第三透镜包括第五表面和第六表面。 上述六个表面都是非球面。
    • 7. 发明授权
    • Method and system for estimating noise level
    • 估计噪音水平的方法和系统
    • US08761540B2
    • 2014-06-24
    • US13160111
    • 2011-06-14
    • Zhi YangAlexander ZamyatinSatoru OhishiAnusha Muthu-Natarajan
    • Zhi YangAlexander ZamyatinSatoru OhishiAnusha Muthu-Natarajan
    • G06K9/40
    • G06T11/008
    • Noise assessment is important to image quality evaluation as well as image processing. For example, the noise level estimation is used as criteria for terminating an iterative noise reduction process. To determine a meaningful noise level, the pixels in featureless regions are separated from the rest of the image. A new concept of pseudo-standard deviation (PSD) is introduced to automatically determine simple and reliable noise level estimates. Furthermore, a histogram of PSD is constructed with fine bins to calculate the moving average of the histogram. The first peak in filtered histogram gives the most representative noise measure as a desired approximation of true standard deviation.
    • 噪声评估对图像质量评估和图像处理很重要。 例如,噪声水平估计被用作终止迭代降噪过程的标准。 为了确定有意义的噪声电平,无特征区域中的像素与图像的其余部分分离。 引入了伪标准偏差(PSD)的新概念,以自动确定简单可靠的噪声电平估计。 此外,PSD的直方图由精细仓组成,以计算直方图的移动平均值。 滤波直方图中的第一个峰值给出最具代表性的噪声测量值作为真正标准偏差的期望近似值。