dsift.h File Reference
Dense SIFT (Dense Scale Invariant Feature Transform (DSIFT)) More...
#include "generic.h"Data Structures | |
| struct | VlDsiftKeypoint |
| Dense SIFT keypoint. More... | |
| struct | VlDsiftDescriptorGeometry |
| Dense SIFT descriptor geometry. More... | |
| struct | VlDsiftFilter |
| Dense SIFT filter. More... | |
Functions | |
| VlDsiftFilter * | vl_dsift_new (int width, int height) |
| Create a new DSIFT filter. | |
| VlDsiftFilter * | vl_dsift_new_basic (int width, int height, int step, int binSize) |
| Create a new DSIFT filter (basic interface) | |
| void | vl_dsift_delete (VlDsiftFilter *self) |
| Delete DSIFT filter. | |
| void | vl_dsift_process (VlDsiftFilter *self, float const *im) |
| Compute keypoints and descriptors. | |
| void | vl_dsift_transpose_descriptor (float *dst, float const *src, int numBinT, int numBinX, int numBinY) |
| Transpose descriptor. | |
| void | _vl_dsift_update_buffers (VlDsiftFilter *self) |
| Updates internal buffers to current geometry. | |
Setting parameters | |
| void | vl_dsift_set_steps (VlDsiftFilter *self, int stepX, int stepY) |
| Set steps. | |
| void | vl_dsift_set_bounds (VlDsiftFilter *self, int minX, int minY, int maxX, int maxY) |
| Set bounds. | |
| void | vl_dsift_set_geometry (VlDsiftFilter *self, VlDsiftDescriptorGeometry const *geom) |
| Set SIFT descriptor geometry. | |
| void | vl_dsift_set_flat_window (VlDsiftFilter *self, vl_bool useFlatWindow) |
| Set flat window flag. | |
| void | vl_dsift_set_window_size (VlDsiftFilter *self, double windowSize) |
| Set SIFT descriptor Gaussian window size. | |
Retrieving data and parameters | |
| float const * | vl_dsift_get_descriptors (VlDsiftFilter const *self) |
| Get descriptors. | |
| int | vl_dsift_get_descriptor_size (VlDsiftFilter const *self) |
| Get descriptor size. | |
| int | vl_dsift_get_keypoint_num (VlDsiftFilter const *self) |
| Get number of keypoints. | |
| VlDsiftKeypoint const * | vl_dsift_get_keypoints (VlDsiftFilter const *self) |
| Get keypoints. | |
| void | vl_dsift_get_bounds (VlDsiftFilter const *self, int *minX, int *minY, int *maxX, int *maxY) |
| Get bounds. | |
| void | vl_dsift_get_steps (VlDsiftFilter const *self, int *stepX, int *stepY) |
| Get steps. | |
| VlDsiftDescriptorGeometry const * | vl_dsift_get_geometry (VlDsiftFilter const *self) |
| Get SIFT descriptor geometry. | |
| vl_bool | vl_dsift_get_flat_window (VlDsiftFilter const *self) |
| Get flat window flag. | |
| double | vl_dsift_get_window_size (VlDsiftFilter const *self) |
| Get SIFT descriptor Gaussian window size. | |
Detailed Description
Function Documentation
| void _vl_dsift_update_buffers | ( | VlDsiftFilter * | self | ) |
| void vl_dsift_delete | ( | VlDsiftFilter * | self | ) |
- Parameters:
-
self DSIFT filter.
| void vl_dsift_get_bounds | ( | VlDsiftFilter const * | self, |
| int * | minX, | ||
| int * | minY, | ||
| int * | maxX, | ||
| int * | maxY | ||
| ) | [inline] |
- Parameters:
-
self DSIFT filter object. minX bounding box minimum X coordinate. minY bounding box minimum Y coordinate. maxX bounding box maximum X coordinate. maxY bounding box maximum Y coordinate.
| int vl_dsift_get_descriptor_size | ( | VlDsiftFilter const * | self | ) | [inline] |
- Parameters:
-
self DSIFT filter object.
- Returns:
- size of a descriptor.
| float const * vl_dsift_get_descriptors | ( | VlDsiftFilter const * | self | ) | [inline] |
- Parameters:
-
self DSIFT filter object.
- Returns:
- descriptors.
| int vl_dsift_get_flat_window | ( | VlDsiftFilter const * | self | ) | [inline] |
- Parameters:
-
self DSIFT filter object.
- Returns:
TRUEif the DSIFT filter uses a flat window.
| VlDsiftDescriptorGeometry const * vl_dsift_get_geometry | ( | VlDsiftFilter const * | self | ) | [inline] |
- Parameters:
-
self DSIFT filter object.
- Returns:
- DSIFT descriptor geometry.
| int vl_dsift_get_keypoint_num | ( | VlDsiftFilter const * | self | ) | [inline] |
- Parameters:
-
self DSIFT filter object.
| VlDsiftKeypoint const * vl_dsift_get_keypoints | ( | VlDsiftFilter const * | self | ) | [inline] |
- Parameters:
-
self DSIFT filter object.
| void vl_dsift_get_steps | ( | VlDsiftFilter const * | self, |
| int * | stepX, | ||
| int * | stepY | ||
| ) | [inline] |
- Parameters:
-
self DSIFT filter object. stepX sampling step along X. stepY sampling step along Y.
| double vl_dsift_get_window_size | ( | VlDsiftFilter const * | self | ) | [inline] |
- Parameters:
-
self DSIFT filter object.
- Returns:
- window size.
| VlDsiftFilter* vl_dsift_new | ( | int | imWidth, |
| int | imHeight | ||
| ) |
- Parameters:
-
imWidth width of the image. imHeight height of the image
- Returns:
- new filter.
| VlDsiftFilter* vl_dsift_new_basic | ( | int | imWidth, |
| int | imHeight, | ||
| int | step, | ||
| int | binSize | ||
| ) |
- Parameters:
-
imWidth width of the image. imHeight height of the image. step sampling step. binSize bin size.
- Returns:
- new filter.
The descriptor geometry matches the standard SIFT descriptor.
| void vl_dsift_process | ( | VlDsiftFilter * | self, |
| float const * | im | ||
| ) |
- Parameters:
-
self DSIFT filter. im image data.
| void vl_dsift_set_bounds | ( | VlDsiftFilter * | self, |
| int | minX, | ||
| int | minY, | ||
| int | maxX, | ||
| int | maxY | ||
| ) | [inline] |
- Parameters:
-
self DSIFT filter object. minX bounding box minimum X coordinate. minY bounding box minimum Y coordinate. maxX bounding box maximum X coordinate. maxY bounding box maximum Y coordinate.
| void vl_dsift_set_flat_window | ( | VlDsiftFilter * | self, |
| vl_bool | useFlatWindow | ||
| ) | [inline] |
- Parameters:
-
self DSIFT filter object. useFlatWindow trueif the DSIFT filter should use a flat window.
| void vl_dsift_set_geometry | ( | VlDsiftFilter * | self, |
| VlDsiftDescriptorGeometry const * | geom | ||
| ) | [inline] |
- Parameters:
-
self DSIFT filter object. geom descriptor geometry parameters.
| void vl_dsift_set_steps | ( | VlDsiftFilter * | self, |
| int | stepX, | ||
| int | stepY | ||
| ) | [inline] |
- Parameters:
-
self DSIFT filter object. stepX sampling step along X. stepY sampling step along Y.
| void vl_dsift_set_window_size | ( | VlDsiftFilter * | self, |
| double | windowSize | ||
| ) | [inline] |
- Parameters:
-
self DSIFT filter object. windowSize window size.
| void vl_dsift_transpose_descriptor | ( | float * | dst, |
| float const * | src, | ||
| int | numBinT, | ||
| int | numBinX, | ||
| int | numBinY | ||
| ) | [inline] |
- Parameters:
-
dst destination buffer. src source buffer. numBinT numBinX numBinY The function writes to dst the transpose of the SIFT descriptor src. Let Ibe an image. The transpose operator satisfies the equationtranspose(dsift(I,x,y)) = dsift(transpose(I),y,x)