Three examples of the ringed galaxies selected from the COSMOS data. From left to right: original r-band COSMOS image, ellipticity isophotal radial profile, position angle radial profile of the isophotes, and deprojected image. The vertical full, dashed and dotted-dashed lines represent the R_{bar − min}, R_{bar − max}, and R_ring, respectively. The horizontal full, dashed and dotted-dashed lines show the PA of the bar, ellipticity of the disc and PA of the disc, respectively. The circle represented in the right-most panels has a radius equal to the measured radius of the ring.