The JPEG still picture compression standard
Communications of the ACM - Special issue on digital multimedia systems
What does the retina know about natural scenes?
Neural Computation
Signal Analysis: Wavelets, Filter Banks, Time-Frequency Transforms and Applications
Signal Analysis: Wavelets, Filter Banks, Time-Frequency Transforms and Applications
Towards a theory of early visual processing
Neural Computation
Modeling convergent ON and OFF pathways in the early visual system
Biological Cybernetics - Special Issue: Quantitative Neuron Modeling
An Optimal Frequency Domain Filter for Edge Detection in Digital Pictures
IEEE Transactions on Pattern Analysis and Machine Intelligence
Wavelet families of increasing order in arbitrary dimensions
IEEE Transactions on Image Processing
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Most retina ganglion cells have center-surround receptive fields, where the center may be either ON or OFF while the surround is the opposite. We clarify the functional roles of the receptive field structure, on the basis of the modern theory of natural data processing. It is suggested that the retina shares the principal mechanism and performance of image processing with a video codec in computers, where the antagonism in spatial or temporal receptive fields originates from the orthogonality condition between linear filters for optimal coding of visual signals. We also reveal what visual information is multiplexed across the discharges of an ensemble of ganglion cells. Our theory makes it possible to predict the cross-correlations between ganglion cell spikes, which are optimized for LGN cells to respond accurately and quickly to their receptive fields.