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    • 12. 发明申请
    • SYSTEM AND METHOD FOR SUN GLINT CORRECTION OF SPLIT FOCAL PLANE VISIBILE AND NEAR INFRARED IMAGERY
    • 系统和方法用于分割光谱平面可见光和近红外图像的三维校正
    • WO2015164214A1
    • 2015-10-29
    • PCT/US2015/026472
    • 2015-04-17
    • THE GOVERNMENT OF THE UNITED STATE OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
    • PATTERSON, Karen W.
    • G06T5/00G06T3/00
    • G06T5/50G06K9/0063G06K2009/00644G06T5/005G06T2207/10036G06T2207/20172G06T2207/20224H04N5/332
    • A computer implemented method and system for reducing sunglint effects in a multispectral digital image from a satellite multiband imager having a sampling time delay between collection of a first handset and a second handset, each handset including a near infrared band and a plurality of other wavelength bands. For each handset separately, extract pixels in a window surrounding a current pixel, determine a local low glint value as the characteristic value of a small subset of pixels in the window having the lowest near infrared reflectance values, determine a near infrared glint value by subtracting the local low glint value from the near infrared reflectance value of the current pixel, and determine glint- corrected values for each of the wavelength bands by subtracting the local low glint value from each wavelength band reflectance value. A second pass can apply a near infrared band subtraction correction to all bands of the first handset and the second handset. The satellite imager can be the WorldView-2 or WorldView-3 system.
    • 一种计算机实现的方法和系统,用于减少来自卫星多频带成像器的多光谱数字图像中的Sunglint效应,所述卫星多频带成像器在收集第一手持机和第二手机之间具有采样时间延迟,每个手机包括近红外波段和多个其它波长带 。 对于每个手机,分别提取围绕当前像素的窗口中的像素,确定局部低闪烁值作为具有最低近红外反射率值的窗口中的一小部分像素的特征值,通过减去近红外闪烁值来确定近红外闪烁值 从当前像素的近红外反射率值的局部低闪烁值,并通过从每个波长带反射率值减去局部低闪烁值来确定每个波段的闪烁校正值。 第二次通过可以对第一手机和第二手机的所有频带应用近红外线带减法校正。 卫星成像仪可以是WorldView-2或WorldView-3系统。