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  • 如何去除栅格影像的黑边?

    来自:http://zhihu.esrichina.com.cn/?/question/6725

    【解决办法】:
    可以通过设置背景值以及背景色解决此问题。
    对于三波段进行RDB渲染的影像可以使用下面代码:
    IRasterRenderer RR = RL.Renderer; 
    IRasterRGBRenderer rasterRGBRenderer = null; 
    if (RR is IRasterRGBRenderer) 
    rasterRGBRenderer = RR as IRasterRGBRenderer; 
    RR.Update(); 
    rasterRGBRenderer.RedBandIndex = 0; 
    rasterRGBRenderer.GreenBandIndex = 1; 
    rasterRGBRenderer.BlueBandIndex = 2; 
    IRgbColor rgb = new RgbColorClass(); 
    rgb.NullColor = true; 
    IRasterStretch2 RS = rasterRGBRenderer as IRasterStretch2; // IRasterStretch无法设置数组,需用2 
    double background = 
    { 
    0, 0, 0 
    }; 
    RS.Background = true; 
    RS.BackgroundValue = background as object; 
    RS.BackgroundColor = rgb as IColor; 
    axMapControl1.Refresh();


    对于单波段影像: 
    单波段:
    IRasterRenderer RR = RL.Renderer;
    IRasterStretchColorRampRenderer RSC = null;
    if (RR is IRasterStretchColorRampRenderer)
    RSC = RR as IRasterStretchColorRampRenderer;
    RR.Update();
    RSC.BandIndex = 0;
    IRgbColor rgb = new RgbColorClass(); 
    rgb.NullColor = true; 
    IRasterStretch RS = RSC as IRasterStretch;
    RS.Background = true;
    RS.set_BackgroundValues(0);
    RS.BackgroundColor = rgb as IColor;
    axMapControl1.Refresh();
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  • 原文地址:https://www.cnblogs.com/gisoracle/p/5210021.html
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