B \ @sJddlmZddlZddgZd ddZddZd dZeje_eje_dS) ) string_typesN load_sift load_surfSIFTc Cst|trt|d}d}n|}d}|dkrntt|\}}tdt fdt fdt fdt fd t |ffg}nPd }t|d }t|}tdt fdt fd t d ffdt fd t |ffg}tj |dd}|j ||j tt j krt d||r|||S)a Read 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 rTFrrowcolumnZscaleZ orientationdataSURFZ second_momentZsign )sepzInvalid {} feature file.) isinstanceropenmapintreadlinesplitnpZdtypefloatZfromfilesizeitemsizeIOErrorformatcloseZview)ZfilelikemodefZfilelike_is_strZ nr_featuresZ feature_lenZdatatyper r.lib/python3.7/site-packages/skimage/io/sift.py _sift_reads,#     r cCs t|ddS)Nr)r)r )rrrrrIscCs t|ddS)Nr )r)r )rrrrrMs)r) ZsixrZnumpyr__all__r rr__doc__rrrrs  B