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Java CV_IMWRITE_JPEG_QUALITY usage for imwrite in opencv 2.4.8

I'm trying to set the compression level for a image I'm writing in Opencv 2.4.8 (Can't use a later version for now) in Java 1.8x using the following code:

   ArrayList<Integer> parameters;
   parameters = new ArrayList;

   parameters.add(CV_IMWRITE_JPEG_QUALITY);
   parameters.add(quality);

   Highgui.imwrite("temp.jpg", image_entry, parameters);

On Compilation I'm currently getting:

 "error: incompatible types: ArrayList<Integer> cannot be converted to MatOfInt
        Highgui.imwrite("temp.jpg", image_entry, parameters);"

Any suggestions?

Solution 
  • // Parameter settings for JPEG compression
List<Integer> parameters = new ArrayList<>();
parameters.add(IMWRITE_JPEG_QUALITY);
parameters.add(quality);

MatOfInt par = new MatOfInt();
par.fromList(parameters);

Imgcodecs.imwrite("c:/test/temp.jpg", image_entry,(par));