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Hello everyone i am new this forum .i have one question.i would like to create app witch can to recognition image(not face) i try to explain tittle about my app.for example,if camera is a start and camera 'll see specific image then i want to show popap message(simple hello message) i have not experience OpenCV in android and i do not know how i can to recognition specific image if anyone knows solution please help me thanks

Hello everyone i am new this forum .i have one question.i would like to create app witch can to recognition image(not face) i try to explain tittle about my app.for example,if camera is a start and camera 'll see specific image then i want to show popap message(simple hello message) i have not experience OpenCV in android and i do not know how i can to recognition specific image if anyone knows solution please help me thanks