Changes between Version 26 and Version 27 of requests


Ignore:
Timestamp:
Jun 17, 2009, 11:11:58 AM (17 years ago)
Author:
goddard
Comment:

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  • requests

    v26 v27  
    1010Currently they include only those collected by Tom Goddard (focus on
    1111density maps, molecular assemblies, electron microscopy).
     12</p>
     13
     14<p>
     15189.
     16<b>Make Gaussian filter more memory efficient.</b><br>
     17Mikyung Han<br>
     18June 17, 2009<br>
     19Make Gaussian filter more memory efficient.  Currently it uses numpy fft library
     20which only provides double precision, and can't transform in place.  So 16 bytes
     21per voxel are required.  For single byte data that is 16x bigger than the input
     22data.  Could transform a plane at a time building 32-bit float array.  This would
     23also permit progress messages and canceling.  Other improvements would be distributing
     2464-bit Mac Chimera or using fftw for fourier transforms.
    1225</p>
    1326