Image of 67P/Churyumov-Gerasimenko on February 18, 2009, acquired with R Johnson filter. From left to right: corrected of flat, bias, and sky background; Laplace filtered; radially renormalized; and enhanced by the Sekanina-Larson method. North is up and east to the left. The FOV is 212″  ×  212″ (192 000  ×  192 000 km), 106″  ×  106″, 106″  ×  106″ (96 000  ×  96 000 km), and 208″  ×  158″ (189 000  ×  143 000 km). The isophotes in the observed image clearly indicate the presence of structures in the inner coma, which are nicely enhanced in the Laplace filtered image, as well as in the resulting frame of the Sekanina-Larson method. However, the radially renormalized image is most suitable for detecting broad and large-scale structures.