No implementation found for phash

[jslok]

In 4.5.3.0 and 4.4.0, I am unable to use org.opencv.img_hash.PHash. I get error:

No implementation found for long org.opencv.img_hash.PHash.create...

Same for the other classes under org.opencv.img_hash. I am importing with implementation 'com.quickbirdstudios:opencv-contrib:4.5.3.0'

My code:

        Mat phash = new Mat();
        PHash hasher = PHash.create();
        hasher.compute(imageMat, phash);

I downgraded to 3.4.15 and it works.

[nasirky]

@jslok If I remember correctly, PHash is is only part of the 3.4.X OpenCV versions and not 4.X OpenCV versions.

[jslok]

Oh weird. It is still mentioned in the 4.x documentation and github.
https://github.com/opencv/opencv_contrib/tree/4.x/modules/img_hash
https://docs.opencv.org/4.5.5/df/d4e/classcv_1_1img__hash_1_1PHash.html

[nasirky]

@jslok I can see the java wrapper class in 4.5.2. I will investigate this sometime next week