Bilinear interpolation functions for 2D images. More...
Go to the source code of this file.
Functions | |
| template<class T > | |
| double | vil_bilin_interp_unsafe (double x, double y, const T *data, vcl_ptrdiff_t xstep, vcl_ptrdiff_t ystep) |
| Compute bilinear interpolation at (x,y), no bound checks. Requires 0<x<ni-2, 0<y<nj-2. | |
| template<class T > | |
| double | vil_bilin_interp_unsafe (double x, double y, const T *data, int, int, vcl_ptrdiff_t xstep, vcl_ptrdiff_t ystep) |
| Compute bilinear interpolation at (x,y), no bound checks. Requires 0<x<ni-2, 0<y<nj-2. | |
| template<class T > | |
| double | vil_bilin_interp_raw (double x, double y, const T *data, vcl_ptrdiff_t xstep, vcl_ptrdiff_t ystep) |
| Compute bilinear interpolation at (x,y), no bound checks. | |
| template<class T > | |
| double | vil_bilin_interp_raw (double x, double y, const T *data, int, int, vcl_ptrdiff_t xstep, vcl_ptrdiff_t ystep) |
| Compute bilinear interpolation at (x,y), no bound checks. | |
| template<class T > | |
| double | vil_bilin_interp_safe (double x, double y, const T *data, int nx, int ny, vcl_ptrdiff_t xstep, vcl_ptrdiff_t ystep) |
| Compute bilinear interpolation at (x,y), with bound checks. | |
| template<class T > | |
| double | vil_bilin_interp_safe (const vil_image_view< T > &view, double x, double y, unsigned p=0) |
| Compute bilinear interpolation at (x,y), with bound checks. | |
| template<class T > | |
| double | vil_bilin_interp (double x, double y, const T *data, int nx, int ny, vcl_ptrdiff_t xstep, vcl_ptrdiff_t ystep) |
| Compute bilinear interpolation at (x,y), with minimal bound checks. | |
| template<class T > | |
| double | vil_bilin_interp (const vil_image_view< T > &view, double x, double y, unsigned p=0) |
| Compute bilinear interpolation at (x,y), with minimal bound checks. | |
| template<class T > | |
| double | vil_bilin_interp_safe_extend (double x, double y, const T *data, int nx, int ny, vcl_ptrdiff_t xstep, vcl_ptrdiff_t ystep) |
| Compute bilinear interpolation at (x,y), with bound checks. | |
| template<class T > | |
| double | vil_bilin_interp_safe_extend (const vil_image_view< T > &view, double x, double y, unsigned p=0) |
| Compute bilinear interpolation at (x,y), with bound checks. | |
Bilinear interpolation functions for 2D images.
The vil bicub source files were derived from the corresponding vil bilin files, thus the vil bilin/bicub source files are very similar. If you modify something in this file, there is a corresponding bicub file that would likely also benefit from the same change.
Definition in file vil_bilin_interp.h.
| double vil_bilin_interp | ( | double | x, |
| double | y, | ||
| const T * | data, | ||
| int | nx, | ||
| int | ny, | ||
| vcl_ptrdiff_t | xstep, | ||
| vcl_ptrdiff_t | ystep | ||
| ) | [inline] |
Compute bilinear interpolation at (x,y), with minimal bound checks.
Image is nx * ny array of Ts. x,y element is data[ystep*y+xstep*x] If (x,y) is outside interpolatable image region and NDEBUG is not defined the code will fail an ASSERT. The safe interpolatable region is [0,nx-1]*[0,ny-1].
Definition at line 128 of file vil_bilin_interp.h.
| double vil_bilin_interp | ( | const vil_image_view< T > & | view, |
| double | x, | ||
| double | y, | ||
| unsigned | p = 0 |
||
| ) | [inline] |
Compute bilinear interpolation at (x,y), with minimal bound checks.
If (x,y) is outside interpolatable image region and NDEBUG is not defined the code will fail an ASSERT. The safe interpolatable region is [0,view.ni()-1]*[0,view.nj()-1].
Definition at line 145 of file vil_bilin_interp.h.
| double vil_bilin_interp_raw | ( | double | x, |
| double | y, | ||
| const T * | data, | ||
| vcl_ptrdiff_t | xstep, | ||
| vcl_ptrdiff_t | ystep | ||
| ) | [inline] |
Compute bilinear interpolation at (x,y), no bound checks.
Image is nx * ny array of Ts. x,y element is data[xstep*x+ystep*y] No bound checks are done.
Definition at line 57 of file vil_bilin_interp.h.
| double vil_bilin_interp_raw | ( | double | x, |
| double | y, | ||
| const T * | data, | ||
| int | , | ||
| int | , | ||
| vcl_ptrdiff_t | xstep, | ||
| vcl_ptrdiff_t | ystep | ||
| ) | [inline] |
Compute bilinear interpolation at (x,y), no bound checks.
Image is nx * ny array of Ts. x,y element is data[xstep*x+ystep*y] No bound checks are done. This is a version of vil_bilin_interp_raw with the same function signature as vil_bilin_interp_safe.
Definition at line 85 of file vil_bilin_interp.h.
| double vil_bilin_interp_safe | ( | double | x, |
| double | y, | ||
| const T * | data, | ||
| int | nx, | ||
| int | ny, | ||
| vcl_ptrdiff_t | xstep, | ||
| vcl_ptrdiff_t | ystep | ||
| ) | [inline] |
Compute bilinear interpolation at (x,y), with bound checks.
Image is nx * ny array of Ts. x,y element is data[xstep*x+ystep*y] If (x,y) is outside interpolatable image region, zero is returned. The safe interpolatable region is [0,nx-1]*[0,ny-1].
Definition at line 97 of file vil_bilin_interp.h.
| double vil_bilin_interp_safe | ( | const vil_image_view< T > & | view, |
| double | x, | ||
| double | y, | ||
| unsigned | p = 0 |
||
| ) | [inline] |
Compute bilinear interpolation at (x,y), with bound checks.
If (x,y) is outside interpolatable image region, zero is returned. The safe interpolatable region is [0,view.ni()-1]*[0,view.nj()-1].
Definition at line 113 of file vil_bilin_interp.h.
| double vil_bilin_interp_safe_extend | ( | double | x, |
| double | y, | ||
| const T * | data, | ||
| int | nx, | ||
| int | ny, | ||
| vcl_ptrdiff_t | xstep, | ||
| vcl_ptrdiff_t | ystep | ||
| ) | [inline] |
Compute bilinear interpolation at (x,y), with bound checks.
Image is nx * ny array of Ts. x,y element is data[nx*y+x] If (x,y) is outside safe interpolatable image region, nearest pixel value is returned. The safe interpolatable region is [0,nx-1]*[0,ny-1].
Definition at line 159 of file vil_bilin_interp.h.
| double vil_bilin_interp_safe_extend | ( | const vil_image_view< T > & | view, |
| double | x, | ||
| double | y, | ||
| unsigned | p = 0 |
||
| ) | [inline] |
Compute bilinear interpolation at (x,y), with bound checks.
If (x,y) is outside safe interpolatable image region, nearest pixel value is returned. The safe interpolatable region is [0,view.ni()-1]*[0,view.nj()-1].
Definition at line 175 of file vil_bilin_interp.h.
| double vil_bilin_interp_unsafe | ( | double | x, |
| double | y, | ||
| const T * | data, | ||
| vcl_ptrdiff_t | xstep, | ||
| vcl_ptrdiff_t | ystep | ||
| ) | [inline] |
Compute bilinear interpolation at (x,y), no bound checks. Requires 0<x<ni-2, 0<y<nj-2.
Image is nx * ny array of Ts. x,y element is data[xstep*x+ystep*y] No bound checks are done.
Definition at line 23 of file vil_bilin_interp.h.
| double vil_bilin_interp_unsafe | ( | double | x, |
| double | y, | ||
| const T * | data, | ||
| int | , | ||
| int | , | ||
| vcl_ptrdiff_t | xstep, | ||
| vcl_ptrdiff_t | ystep | ||
| ) | [inline] |
Compute bilinear interpolation at (x,y), no bound checks. Requires 0<x<ni-2, 0<y<nj-2.
Image is nx * ny array of Ts. x,y element is data[xstep*x+ystep*y] No bound checks are done. This is a version of vil_bilin_interp_unsafe with the same function signature as vil_bilin_interp_safe.
Definition at line 46 of file vil_bilin_interp.h.
1.7.5.1