00001 // This is core/vil/vil_resample_bilin.h 00002 #ifndef vil_resample_bilin_h_ 00003 #define vil_resample_bilin_h_ 00004 //: 00005 // \file 00006 // \brief Sample grid of points with bilinear interpolation in one image and place in another 00007 // \author Tim Cootes 00008 // 00009 // The vil bicub source files were derived from the corresponding 00010 // vil bilin files, thus the vil bilin/bicub source files are very 00011 // similar. If you modify something in this file, there is a 00012 // corresponding bicub file that would likely also benefit from 00013 // the same change. 00014 00015 #include <vil/vil_image_view.h> 00016 00017 //: Sample grid of points in one image and place in another, using bilinear interpolation. 00018 // dest_image(i,j,p) is sampled from the src_image at 00019 // (x0+i.dx1+j.dx2,y0+i.dy1+j.dy2), where i=[0..n1-1], j=[0..n2-1] 00020 // dest_image resized to (n1,n2,src_image.nplanes()) 00021 // Points outside image return zero. 00022 // \sa vil_resample_bicub 00023 // \relatesalso vil_image_view 00024 template <class sType, class dType> 00025 void vil_resample_bilin(const vil_image_view<sType>& src_image, 00026 vil_image_view<dType>& dest_image, 00027 double x0, double y0, double dx1, double dy1, 00028 double dx2, double dy2, int n1, int n2); 00029 00030 //: Resample image to a specified width (n1) and height (n2) 00031 // \sa vil_resample_bicub 00032 // \relatesalso vil_image_view 00033 template <class sType, class dType> 00034 void vil_resample_bilin(const vil_image_view<sType>& src_image, 00035 vil_image_view<dType>& dest_image, 00036 int n1, int n2); 00037 00038 //: Sample grid of points in one image and place in another, using bilinear interpolation. 00039 // dest_image(i,j,p) is sampled from the src_image at 00040 // (x0+i.dx1+j.dx2,y0+i.dy1+j.dy2), where i=[0..n1-1], j=[0..n2-1] 00041 // dest_image resized to (n1,n2,src_image.nplanes()) 00042 // Points outside image return the value of the nearest valid pixel. 00043 // \relatesalso vil_image_view 00044 template <class sType, class dType> 00045 void vil_resample_bilin_edge_extend(const vil_image_view<sType>& src_image, 00046 vil_image_view<dType>& dest_image, 00047 double x0, double y0, double dx1, double dy1, 00048 double dx2, double dy2, int n1, int n2); 00049 00050 //: Resample image to a specified width (n1) and height (n2) 00051 // \relatesalso vil_image_view 00052 template <class sType, class dType> 00053 void vil_resample_bilin_edge_extend(const vil_image_view<sType>& src_image, 00054 vil_image_view<dType>& dest_image, 00055 int n1, int n2); 00056 00057 #endif // vil_resample_bilin_h_
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