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    • 1. 发明授权
    • Frequency diversity for image enhancement
    • 用于图像增强的频率分集
    • US4561019A
    • 1985-12-24
    • US494633
    • 1983-05-16
    • Frederic L. LizziMarek ElbaumErnest J. Feleppa
    • Frederic L. LizziMarek ElbaumErnest J. Feleppa
    • G01S7/10G01S7/52G01S13/89G02B27/48H04N7/18
    • G01S7/52046G01S13/89G01S7/10G01S7/5206G02B27/48G01S15/8954G01S7/52077
    • Methods for improving the availability of information derived from signals received from an object irradiated with coherent pulses of any form of radiation that exhibits a wave nature are disclosed. A method for reducing speckle derives separate component noncoherent signals from the received signals, and combines these separate noncoherent signals to form improved composite noncoherent signals. Weighting and processing of component signals can be applied as a function of time, frequency, and signal amplitude to optimize speckle reduction in all or a critical part of the signal by compensating for the range and frequency dependence of attenuation and the frequency dependence of scattering phenomena. In a method for enhancing resolution, separate component coherent signals are derived from the received signals, weighted and processed, and combined to form improved composite coherent signals; then noncoherent signals are derived from the improved composite coherent signals. In both methods, signals can be processed either in the analog or digital domains or in hybrid analog/digital domains. The apparatus for performing each method also is disclosed.
    • 本发明公开了一种用于改善由从呈现波浪性的任何形式的辐射的相干脉冲照射的物体接收的信号得到的信息的可用性的方法。 一种减少散斑的方法从接收到的信号中导出单独的分量非相干信号,并且将这些分离的非相干信号组合以形成改进的复合非相干信号。 可以根据时间,频率和信号幅度来应用分量信号的加权和处理,以通过补偿衰减的范围和频率依赖性以及散射现象的频率依赖性来优化信号的全部或关键部分的散斑减少 。 在用于增强分辨率的方法中,从加权和处理的接收信号中导出分离的分量相干信号,并组合以形成改进的复合相干信号; 那么非相干信号从改进的复合相干信号导出。 在这两种方法中,可以在模拟或数字域或混合模拟/数字域中处理信号。 还公开了用于执行每种方法的装置。
    • 4. 发明授权
    • Systems and methods for the multispectral imaging and characterization of skin tissue
    • 用于多光谱成像和皮肤组织表征的系统和方法
    • US06208749B1
    • 2001-03-27
    • US09032450
    • 1998-02-27
    • Dina Gutkowicz-KrusinMarek ElbaumMichael GreenebaumAdam Jacobs
    • Dina Gutkowicz-KrusinMarek ElbaumMichael GreenebaumAdam Jacobs
    • G06K900
    • A61B5/442A61B5/445G06F19/00
    • Systems and methods for the multispectral imaging of skin tissue enables automatic characterization of the condition of a region of interest of the skin, based on direct digital imaging of the region of interest or the digitization of color photographic slides of the region of interest, illuminated by appropriately filtered light. Preferably, a digital image at a low spectral band is automatically segmented and that segmented mask is used to segment the other images by a digital processor. Parameters related to the texture, asymmetry, blotchiness and border irregularities are also automatically estimated. The region of interest is automatically characterized by the digital processor, based on those parameters. The region of interest may include a skin lesion, in which case the present invention enables the characterization of the lesion as malignant or benign.
    • 用于皮肤组织的多光谱成像的系统和方法可以基于感兴趣区域的直接数字成像或感兴趣区域的彩色摄影载玻片的数字化,自动表征皮肤感兴趣区域的状况,由 适当过滤光。 优选地,在低频谱带处的数字图像被自动分段,并且该分割的掩模用于由数字处理器分割其它图像。 还会自动估计与纹理,不对称,斑点和边界不规则相关的参数。 基于这些参数,感兴趣的区域由数字处理器自动表征。 感兴趣的区域可以包括皮肤损伤,在这种情况下,本发明能够将病变表征为恶性或良性。