Add performance tracking to local detection

Signed-off-by: Justin Georgi <justin.georgi@gmail.com>

src/pages/local-detect.js

@@ -10,13 +10,18 @@ export default {
       })
   },
     async localDetect(imageData) {
+      console.time('pre-process')
       const [modelWidth, modelHeight] = model.inputs[0].shape.slice(1, 3);
-
       const input = tf.tidy(() => {
         return tf.image.resizeBilinear(tf.browser.fromPixels(imageData), [modelWidth, modelHeight]).div(255.0).expandDims(0)
       })
+      console.timeEnd('pre-process')
 
+      console.time('run prediction')
       const res = model.predict(input)
+      console.timeEnd('run prediction')
+
+      console.time('post-process')
       const detectAttempts = res.shape[2]
       const outputSize = res.shape[1]
       const rawRes = tf.transpose(res,[0,2,1]).dataSync()
@@ -69,6 +74,7 @@ export default {
 
       tf.dispose(res)
       tf.dispose(tBoxes)
+      console.timeEnd('post-process')
 
       return output
     }