Inventors:
Alexander Schepelmann - Pittsburgh PA, US
Kathryn A. Daltorio - Cleveland OH, US
Amaury D. Rolin - Washington DC, US
Jonathan Beno - Boulder CO, US
Bradley E. Hughes - Butler PA, US
James M. Green - Berea OH, US
Michael S. Branicky - Shaker Heights OH, US
Roger D. Quinn - Akron OH, US
Henry H. Snow - Tannersville NY, US
Francis L. Merat - University Heights OH, US
Richard E. Hudson - Durham NC, US
Assignee:
CASE WESTERN RESERVE UNIVERSITY - Cleveland OH
MTD PRODUCTS INC - Valley City OH
International Classification:
H04N 5/228
G06K 9/34
US Classification:
3482221, 382173, 348E05024
Abstract:
This invention provides a method for identifying lawn grass comprising capturing an image of the terrain in front of a mower, segmenting the image into neighborhoods, calculating at least two image statistics for each of the neighborhoods, generating a binary representation of each image statistic. The binary representation of each image statistic is generated by comparing the calculated image statistic values to predetermined image statistic values for grass. The method further comprises weighting each of the binary representations of each image statistic, and summing corresponding neighborhoods for all image statistics. A binary threshold is applied to each of the summed neighborhoods to generate a binary map representing grass containing areas and non-grass containing areas.