[Clojure] - Add Draw Bounding Box to Core Clojure Image namespace

[gigasquid]

Context

For Object detection, we were using Origami in the examples to draw bounding boxes. The Scala package has just added this bounding box drawing into the core package with this PR #14474 so it would be better for us to use this through interop to achieve consistency through the JVM packages

Sample Code

Here is some sample interop code that will draw the boxes

  (import '(org.apache.mxnet Image))

  (defn download-image []
  (with-open [in (io/input-stream "https://s3.amazonaws.com/model-server/inputs/Pug-Cookie.jpg")
              out (io/output-stream (io/file image-path))]
    (io/copy in out)))

  (download-image)

  (def my-image (ImageIO/read (new File image-path)))
  (let [box [(util/convert-map {"xmin" (int 190) "xmax" (int 850)
                                "ymin" (int 50) "ymax" (int 450)})
             (util/convert-map {"xmin" (int 200) "xmax" (int 350)
                                "ymin" (int 440) "ymax" (int 530)})]
        names (into-array ["pug" "cookie"])
        font-size-mult (float 1.4)
        stroke (int 3)
        transparency (float 1.0)]
    (Image/drawBoundingBox my-image
                           (into-array box)
                           (util/->option names)
                           (util/->option stroke)
                           (util/->option font-size-mult)
                           (util/->option transparency)))

  (ImageIO/write my-image "png" (io/file tmp-dir "out.png"))

Testing

This should be added as a function to the org.apache.clojure-mxnet.image namespace and also used in the object detection example.

Testing can follow the path in the Scala PR /~https://github.com/apache/incubator-mxnet/pull/14474/files#diff-3b90268bc4fb53edb14b46c46be1cc32

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[Chouffe]

Work in Progress here: #14533