A novel method for detecting and localising of reflectional and rotational symmetry under weak perspective projection. - Yiwu Lei; Kok Cheong Wong (ICPR, 1998)

Detection and localisation of reflectional and rotational symmetry under weak perspective projection. - Yiwu Lei; Kok Cheong Wong (Pattern Recognit., 1999)

Ellipse detection based on symmetry. - Yiwu Lei; Kok Cheong Wong (Pattern Recognit. Lett., 1999)