OpenCV compiler error when using Stitcher under iOS

Question

Whenever I try to use the OpenCV Stitcher class in iOS and I include the stitcher-header ( #include ) I end up with a compile error "Expected '{'" in exposure_compensate.hpp. Apparently the line enum { NO, GAIN, GAIN_BLOCKS }; is causing some sort of error.

I am very new to openCV but using other functions like filter2d() work as expected. How can I resolve this?

Answer 1

Try

#import <opencv2/opencv.hpp>

then

#import <UIKit/UIKit.h>

Update: this answer only highlights the bare minimum fix of the problem, and perhaps the root cause: order of dependencies. Please refer to other answers for better code / setup that you put in your project.