You may select you subject or object precisely using the lasso tool.
Example 1: Lasso tool
Adobe Photoshop tutorial: Lasso Tool. (2010).
ekacariyaṃ daḷhaṃ kayirā;
natthi bāle sahāyatā.
Should a seeker not find
a companion who is better or equal,
let one resolutely pursue a solitary course;
there is no fellowship with the fool.