catch someone's attention

US /kætʃ ˈsʌm.wʌnz əˈten.ʃən/
UK /kætʃ ˈsʌm.wʌnz əˈten.ʃən/
"catch someone's attention" picture
1.

to make someone notice you or something

:
He tried to wave his hand to catch her attention.
The bright colors of the painting immediately caught my attention.