receptive field

Role of homeostasis in learning sparse representations

Neurons in the input layer of primary visual cortex in primates develop edge-like receptive fields. One approach to understanding the emergence of this response is to state that neural activity has to efficiently represent sensory data with respect …

Sparse Gabor wavelets by local operations

Efficient sparse coding of overcomplete transforms remains still anopen problem. Different methods have been proposed in theliterature, but most of them are limited by a heavy computationalcost and by difficulties to find the optimal solutions. We …

Emergence of filters from natural scenes in a sparse spike coding scheme

Sparse Image Coding Using an Asynchronous Spiking Neural Network

Progressive reconstruction of a static image using spikes in a Laplacian pyramid.