openMVG_main_ComputeFeatures¶
Compute image description for a given sfm_data.json file. For each view it compute the image description (local regions) and store them on disk
$ openMVG_main_ComputeFeatures -i [..\matches\sfm_data.json] -o [...\matches]
Arguments description:
Required parameters:
[-i|–input_file]
a SfM_Data file
[-o|–outdir path]
path were image description will be stored
Optional parameters:
[-f|–force: Force to recompute data]
0: (default) reload previously computed data (useful when you have kill the process and want to continue to compute)
1: useful when you change have changed a command line parameter, force recomputing and re-saving.
[-m|–describerMethod]
Used method to describe an image:
SIFT: (default),
AKAZE_FLOAT: AKAZE with floating point descriptors,
AKAZE_MLDB: AKAZE with binary descriptors.
[-u|–upright]
Use Upright feature or not
0: (default, rotation invariance)
1: extract upright feature (orientation angle = 0°)
[-p|–describerPreset]
Used to control the Image_describer configuration:
NORMAL,
HIGH,
ULTRA: !!Can be time consumming!!
Once openMVG_main_ComputeFeatures is done you can compute the Matches between the computed description.
Export detected regions as SVG files:¶
Detected keypoints: openMVG_main_exportKeypoints