U ?h @s>ddlZddgZd ddZddZddZeje_eje_dS) N load_sift load_surfSIFTc Cst|trt|}d}n|}d}|dkrltt|\}}tdt fdt fdt fdt fdt |ffg}nPd }t|d }t|}tdt fdt fd t d ffd t fdt |ffg}tj |dd}|j ||j tt j krt d|d|r|||S)aRead SIFT or SURF features from externally generated file. This routine reads SIFT or SURF files generated by binary utilities from http://people.cs.ubc.ca/~lowe/keypoints/ and http://www.vision.ee.ethz.ch/~surf/. This routine *does not* generate SIFT/SURF features from an image. These algorithms are patent encumbered. Please use `skimage.feature.CENSURE` instead. Parameters ---------- filelike : string or open file Input file generated by the feature detectors from http://people.cs.ubc.ca/~lowe/keypoints/ or http://www.vision.ee.ethz.ch/~surf/ . mode : {'SIFT', 'SURF'}, optional Kind of descriptor used to generate `filelike`. Returns ------- data : record array with fields - row: int row position of feature - column: int column position of feature - scale: float feature scale - orientation: float feature orientation - data: array feature values TFrrowcolumnscaleZ orientationdataSURFZ second_momentsign )sepzInvalid z feature file.) isinstancestropenmapintreadlinesplitnpZdtypefloatfromfilesizeitemsizeOSErrorcloseview)ZfilelikemodefZfilelike_is_strZ nr_featuresZ feature_lendatatyperr!A/var/www/html/venv/lib/python3.8/site-packages/skimage/io/sift.py _sift_reads4#     r#cCs t|ddS)Nrrr#rr!r!r"rHscCs t|ddS)Nr r$r%r&r!r!r"rLs)r)numpyr__all__r#rr__doc__r!r!r!r"s  B