Surveyor Robotics Journal

Surveyor Robotics Journal

	email: support@surveyor.com web: Surveyor Corporation rss: Subscribe Archives August 2010 July 2010 June 2010 May 2010 April 2010 March 2010 February 2010 January 2010 December 2009 November 2009 October 2009 September 2009 August 2009 July 2009 June 2009 May 2009 April 2009 March 2009 February 2009 January 2009 December 2008 November 2008 October 2008 September 2008 August 2008 September 2008 August 2008 July 2008 June 2008 May 2008 April 2008 March 2008 February 2008 January 2008 December 2007 November 2007 October 2007 September 2007 August 2007 July 2007 June 2007 May 2007 April 2007 March 2007 February 2007 January 2007 December 2006 November 2006 October 2006 September 2006 August 2006 July 2006 June 2006 May 2006 April 2006 March 2006 Februray 2006 January 2006	Fri, 06 Feb 2009 More progress on neural net engine ... "ng" (grab blob to create neural input pattern) and "nb" (compare blob against trained patterns) are now working, though certainly in need of lots of testing. Code repository: http://code.google.com/p/surveyor-srv1-firmware Forum discussion Here's an example session - vc0100200070130150250 ##vc 0 vb0 ##vb0 2111 - 118 188 91 188 ng4 (this is where we grab a blob,scale it to 8x8, and store it as a new pattern) ni (initialize the net) ##ni - init neural net nt (train the net) ##nt - train 10000 iterations nb0 (check that the pattern was learned) ##nb 0 0 0 0 71 7 0 0 0 0 0 0 0 0 0 0 then after moving the robot slightly vb0 ##vb0 2137 - 126 196 92 189 nb0 ##nb 0 0 0 0 78 6 0 0 0 0 0 0 0 0 0 0 The "nb" command matches the input pattern from the largest blob against the patterns that the neural net has already learned. You can see that the best match is with pattern #4 (counting from 0). The detector seems to be pretty sensitive to small changes, so more work is needed, but at least we have a starting point. Posted Fri, 06 Feb 2009 17:52 \| HTML Link \| see additional stories ...