Utsavz
commented
7 years ago @NHZlX Hey bro This issue occurs when the matlab command you issued did not work. maybe a toolkit was not instaled or something else. I suggest directly running the script in matlab environment to check the error.
matlab:2014a python:2.7 ubuntu
here is the selective_search.py: import tempfile import subprocess import shlex import os import numpy as np import scipy.io
script_dirname = os.path.abspath(os.path.dirname(file))
def get_windows(image_fnames, cmd='selective_search'): """ Run MATLAB Selective Search code on the given image filenames to generate window proposals.
Parameters
image_filenames: strings Paths to images to run on. cmd: string selective search function to call:
Form the MATLAB script command that processes images and write to
temporary results file.
f, output_filename = tempfile.mkstemp(suffix='.mat') os.close(f) fnames_cell = '{' + ','.join("'{}'".format(x) for x in image_fnames) + '}' command = "{}({}, '{}')".format(cmd, fnames_cell, output_filename) print(command)
Execute command in MATLAB.
mc = "matlab -nojvm -r \"try; {}; catch; exit; end; exit\"".format(command) pid = subprocess.Popen( shlex.split(mc), stdout=open('NUL', 'w'), cwd=script_dirname) retcode = pid.wait() if retcode != 0: raise Exception("Matlab script did not exit successfully!")
Read the results and undo Matlab's 1-based indexing.
all_boxes = list(scipy.io.loadmat(output_filename)['all_boxes'][0]) subtractor = np.array((1, 1, 0, 0))[np.newaxis, :] all_boxes = [boxes - subtractor for boxes in all_boxes]
Remove temporary file, and return.
os.remove(output_filename) if len(all_boxes) != len(image_fnames): raise Exception("Something went wrong computing the windows!") return all_boxes if name == 'main': """ Run a demo. """ import time
image_filenames = [ script_dirname + '\000015.jpg', script_dirname + '\cat.jpg' ] * 4 t = time.time() boxes = get_windows(image_filenames) print(boxes[:2]) print("Processed {} images in {:.3f} s".format( len(image_filenames), time.time() - t)) when i run python selective_search.py in cmd: it have problem: selective_search({'D:\selective_search_ijcv_with_python\selective_search_ijcv_wi th_python\000015.jpg','D:\selective_search_ijcv_with_python\selective_search_ijc v_with_python\cat.jpg','D:\selective_search_ijcv_with_python\selective_search_ij cv_with_python\000015.jpg','D:\selective_search_ijcv_with_python\selective_searc h_ijcv_with_python\cat.jpg','D:\selective_search_ijcv_with_python\selective_sear ch_ijcv_with_python\000015.jpg','D:\selective_search_ijcv_withpython\selective search_ijcv_with_python\cat.jpg','D:\selective_search_ijcv_with_python\selective _search_ijcv_with_python\000015.jpg','D:\selective_search_ijcv_with_python\selec tive_search_ijcv_with_python\cat.jpg'}, 'c:\users\lh7610~1.arc\appdata\local\tem p\tmpp6f4z8.mat') Traceback (most recent call last): File "selective_search.py", line 63, in
boxes = get_windows(image_filenames)
File "selective_search.py", line 42, in get_windows
all_boxes = list(scipy.io.loadmat(output_filename)['all_boxes'][0])
File "D:\python\lib\site-packages\scipy\io\matlab\mio.py", line 135, in loadma
t
MR = mat_reader_factory(file_name, appendmat, **kwargs)
File "D:\python\lib\site-packages\scipy\io\matlab\mio.py", line 59, in mat_rea
der_factory
mjv, mnv = get_matfile_version(byte_stream)
File "D:\python\lib\site-packages\scipy\io\matlab\miobase.py", line 224, in ge
t_matfile_version
raise MatReadError("Mat file appears to be empty")
scipy.io.matlab.miobase.MatReadError: Mat file appears to be empty
1.the path of my picture is right. 2.i check the c:\users\lh7610~1.arc\appdata\local\temp and found no mat file. 3.i think the matlab cannot produce the mat file even though it has right picture path. 4.i have put the path "D:\selective_search_ijcv_with_python\selective_search_ijcv_with_python" in PYTHONPATH , caffe_ROOT and path. 5.when i "python selective_search",i can see matlab commit windows and disappear in a while. who can help me!!