如何檢查徽標/圖像是否在圖像中？

Question

我想比較文檔的圖像與徽標類型或其他圖片，以查看徽標是否在文檔中。

這樣做的應用程序將使用ASP.NET MVC 3和C＃。

更多搜索後我瑤池與位圖的擴展，使用AForge的解決方案：

public static class BitmapExtensions 
{ 
    /// <summary> 
    /// See if bmp is contained in template with a small margin of error. 
    /// </summary> 
    /// <param name="template">The Bitmap that might contain.</param> 
    /// <param name="bmp">The Bitmap that might be contained in.</param>   
    /// <returns>You guess!</returns> 
    public static bool Contains(this Bitmap template, Bitmap bmp) 
    { 
     const Int32 divisor = 4; 
     const Int32 epsilon = 10; 

     ExhaustiveTemplateMatching etm = new ExhaustiveTemplateMatching(0.9f); 

     TemplateMatch[] tm = etm.ProcessImage(
      new ResizeNearestNeighbor(template.Width/divisor, template.Height/divisor).Apply(template), 
      new ResizeNearestNeighbor(bmp.Width/divisor, bmp.Height/divisor).Apply(bmp) 
      ); 

     if (tm.Length == 1) 
     { 
      Rectangle tempRect = tm[0].Rectangle; 

      if (Math.Abs(bmp.Width/divisor - tempRect.Width) < epsilon 
       && 
       Math.Abs(bmp.Height/divisor - tempRect.Height) < epsilon) 
      { 
       return true; 
      } 
     } 

     return false; 
    } 
} 

Answer 1

我認爲你要使用模板匹配功能。我會建議使用opencv。這是similar to this question