  Object detection and classification is one of the most important computer
vision problems. Ever since the introduction of deep learning
\cite{krizhevsky2012imagenet}, we have witnessed a dramatic increase in the
accuracy of this object detection problem. However, most of these improvements
have occurred using conventional 2D image processing. Recently, low-cost
3D-image sensors, such as the Microsoft Kinect (Time-of-Flight) or the Apple
FaceID (Structured-Light), can provide 3D-depth or point cloud data that can be
added to a convolutional neural network, acting as an extra set of dimensions.
In our proposed approach, we introduce a new 2D + 3D system that takes the
3D-data to determine the object region followed by any conventional 2D-DNN,
such as AlexNet. In this method, our approach can easily dissociate the
information collection from the Point Cloud and 2D-Image data and combine both
operations later. Hence, our system can use any existing trained 2D network on
a large image dataset, and does not require a large 3D-depth dataset for new
training. Experimental object detection results across 30 images show an
accuracy of 0.67, versus 0.54 and 0.51 for RCNN and YOLO, respectively.
