Change the way plots are defined for inspect in preparation for adding liveplotting

tests/tools/test_image_processing.py

@@ -138,3 +138,5 @@ def test_convolve_1d():
 
     np_result = np.fft.ifft(np.fft.fft(test_image,axis=0) * np.fft.fft(np.fft.ifftshift(kernel))[:,None], axis=0)
     assert np.allclose(convolved,np_result)
+
+