Under the name "Computer vision" (CV) goes that set of techniques which allow us to manipulate and extract numerical data, and higher-level information, from an image, via a computer. This section will explain the basics of the field and then deal into more details, outlining the concepts that CV tackles. Nowadays, there is a division in the field in regards to "traditional" CV (the set of techniques which is not based on the use of Neural Networks/Deep Learning) and more state-of-the-art methods based on ANNs. We will touch on both sides.