Array processing for intersecting circle retrieval

Circular features are commonly sought in digital image processing. SLIDE (Subspace based LIne DEtection) method proposed to estimate the center and the radius of a single circle by adapting array processing methods. Recently, a virtual circular array was proposed to estimate the radii of several concentric circles. A difficulty arises when intersecting circles are expected. In this paper, for the first time, we propose to combine linear and circular antenna, to retrieve intersecting circles. We exemplify the proposed method on a set of hand-made and real-world images.