1. A method for annotation of skin images, comprising: receiving a plurality of dermatoscopic images, each including a region of lesion skin and a region of normal skin; training a first convolutional neural network according to an interior of the region of lesion skin using each of the plurality of dermatoscopic images; training a second convolutional neural network according to a boundary between the region of lesion skin and the region of normal skin; acquiring an additional dermatoscopic image; and using the first and second convolutional neural networks to identify a region of lesion skin within the acquired additional dermatoscopic image.