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i want to morp some text in openCV/javacv like this:

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I know there are some functions like warpPerspective, but i don't know how to use it to get these transform

greetings

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    You can implemented it yourself, take a look at function apply_wave(). Commented Aug 1, 2012 at 17:25

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wrapPerspective does perspective transformation. Probably you are looking for remap. Have a look at the example in this answer on stackoverflow. Hope that helps.

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