objective c - How to detect tap on small nearest buttons in iOS? -

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i need build app in there image. on image there many points user can tap , depend upon location of tap need take input. tap locations fixed.

user can zoom image. detect multiple taps. (single tap, double tap, etc.)

biggest problem facing there many points near each other. if tap on 1 point getting other points clicked.

following image according need work on.

enter image description here

i need detect tap on red dots , take decision based upon that. red dots not visible user.

what have tried following.

placed buttons on image shown image. problem when user tap on button either button's tap event not calling or it's not tapping right button user seems tap.

what thinking is.

taken image in scroll view detect tap of scroll view , based upon co-ordinates detect tap.

is there easier way detect tap?

your requirement pretty complex one.

here have take of core image. need process image , core details of image. "morphological operations" detect object image. take on links:

core image processing

morphological operations


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