Merge branch 'master' into master

Author: hiddentn

src/ImageClassifier/index.js

@@ -70,6 +70,9 @@ class ImageClassifier {
       imgToPredict = inputNumOrCallback;
     } else if (typeof inputNumOrCallback === 'object' && inputNumOrCallback.elt instanceof HTMLImageElement) {
       imgToPredict = inputNumOrCallback.elt; // Handle p5.js image
+    } else if (!(this.video instanceof HTMLVideoElement)) {
+      // Handle unsupported input
+      throw new Error('No input image provided. If you want to classify a video, pass the video element in the constructor. ');
     }
 
     if (typeof numOrCallback === 'number') {

src/PitchDetection/index.js

@@ -5,8 +5,8 @@
 
 /*
   Crepe Pitch Detection model
-  https://github.com/marl/crepe/tree/gh-pages
-  https://marl.github.io/crepe/crepe.js
+  Based on https://github.com/marl/crepe/tree/gh-pages
+  Original model and code: https://marl.github.io/crepe/crepe.js
 */
 
 import * as tf from '@tensorflow/tfjs';

src/Pix2pix/index.js

@@ -6,6 +6,8 @@
 /* eslint max-len: "off" */
 /*
 Pix2pix
+The original pix2pix TensorFlow implementation was made by affinelayer: github.com/affinelayer/pix2pix-tensorflow
+This version is heavily based on Christopher Hesse TensorFlow.js implementation: https://github.com/affinelayer/pix2pix-tensorflow/tree/master/server
 */
 
 import * as tf from '@tensorflow/tfjs';

src/PoseNet/index.js

@@ -5,6 +5,7 @@
 
 /*
 PoseNet
+The original PoseNet model was ported to TensorFlow.js by Dan Oved.
 */
 
 import EventEmitter from 'events';

src/StyleTransfer/index.js

@@ -4,8 +4,11 @@
 // https://opensource.org/licenses/MIT
 
 /* eslint max-len: "off" */
+/* eslint no-trailing-spaces: "off" */
 /*
 Fast Style Transfer
+This implementation is heavily based on github.com/reiinakano/fast-style-transfer-deeplearnjs by Reiichiro Nakano.
+The original TensorFlow implementation was developed by Logan Engstrom: github.com/lengstrom/fast-style-transfer 
 */
 
 import * as tf from '@tensorflow/tfjs';