Call matlab in python

1. matlab code

addpath(genpath('/home/duino/Downloads/toolbox/channels'));
img = imread('test.jpg');
hs = 207
ws = 270
im_data = (imResample(single(img), [hs ws], 'bilinear')-127.5)*0.0078125;

imResample(…) is a function in toolbox.

2. python solution

1. Install matlab_wrapper.

2. Create script.m which call toolbox function.

   addpath(genpath('/home/duino/Downloads/toolbox/channels'));
   im_data = (imResample(single(img), [hs ws], 'bilinear')-127.5)*0.0078125;

3. Create test.py to run srcipt.m

   import numpy as np
   import matlab_wrapper
   import cv2
   
   def imResample(img, hs, ws):
       matlab = matlab_wrapper.MatlabSession()
       matlab.put('img', img)
       matlab.put('hs', hs)
       matlab.put('ws', ws)
       matlab.eval('script')
       im_data = matlab.get('im_data')
       return im_data
   
   def main():
       img = cv2.imread('test.jpg');
       img = img.astype(float)
       hs = 207
       ws = 270
       im_data = imResample(img, hs, ws)
       print im_data[0, 0, :]
   
   if __name__ == "__main__":
       main()

   Run test.py to get result from matlab code.