Engineering Technology and Applications – Shao, Shu & Tian (Eds)
© 2014 Taylor & Francis Group, London, ISBN 978-1-138-02705-3
A fusion edge detection method based on improved Prewitt operator
and wavelet transform
KunlinYu & Zhiyu Xie
Changsha Aeronautical Vocational and Technical College, Changsha, Hunan, China
ABSTRACT: The traditional Prewitt operator only has two detection templates of horizontal
and vertical direction, edge detection accuracy is not high. In order to improve the edge detecting
precision and computing speed, the traditional Prewitt operator is improved in this paper, the
edge detecting operator is increased from two to four. But Prewitt operators are sensitive to noise,
pseudo edge prone to detection, and the detecting method