Quantized Convolutional Neural Networks for Mobile Devices
Recently, convolutional neural networks (CNN) have demonstrated impressive performance in various computer vision tasks. However, high performance hardware is typically indispensable for the application of CNN models due to the high computation complexity, which prohibits their further extensions. In this paper, we propose an efficient framework, namely Quantized CNN, to simultaneously speed up the computation and reduce the storage and memory overhead of CNN models. Both filter kernels in convolutional layers and weighting matrices in fully connected layers are quantized, aiming at minimizing the estimation error of each layer's response. Extensive experiments on the ILSVRC 12 benchmark demonstrate 4 6x speed up and 15 20x compression with merely one percentage loss of classification accuracy. With our quantized CNN model, even mobile devices can accurately classify images within one second.
2016 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)