what does this lines mean?
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repo = '/media/data/images/';
filelist = dir([repo '*.jpg']);
sift_descr = {}
回答（1 个）
Walter Roberson
2018-4-16
filelist will become a struct vector, in which every entry describes a '.jpg' file found in /media/data/images/ . filelist will not be the list of files: it will information about the files. The names are in the .name field of the struct,
filenames = {filelist.name};
Note that the filenames extracted this way will not contain the directory information.
After that is done, the variable sift_descr is initialized to become an empty cell array. This step does not depend upon the previous two lines.
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2018-4-16
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