A method of applying image data as a visually detectable pattern with at least one embedded data element at an optical record carrier is disclosed, comprising the step of physically mapping at least one channel symbol onto the record carrier, the channel symbol being selected from a set of mutually different channel symbols, the channel symbols each comprising an area of size s1 with a relatively low value v1 for an optical property and an area with size s2 with a relatively high value v2 for said optical property, the channel symbols being distributed over a plurality of subsets each having a plurality of channel symbols wherein the plurality of channel symbols (CS,CS') within a subset have a distance that is substantially less than the distance between channel symbols of mutually different subsets, wherein the distance between two channel symbols is defined as the absolute difference between the s1/(s1+s2)and s1'/(s1'+s2') and s1, s2 are the sizes of the areas with the relatively low value of the optical property and with the relatively high value of the optical property respectively for the symbol CS, and s1', s2' are the corresponding values for the symbol CS'; wherein the step of selecting comprises the step of determining a subset on the basis of the image data to be mapped in the visually detectable pattern and selecting one symbol from that subset on the basis of the at least one data symbol to be mapped.