JOINT SPATIAL SPATIAL-FREQUENCY REPRESENTATION

We consider the motivations for current interest in the application of conjoint signal representations to problems in visual processing and form representation. The issue of conjoint resolution is discussed, especially as it pertains to joint energy and pseudo-energy signal representations. Particular joint representations of importance to vision are reviewed and these are cast into a common analytical framework, previously introduced by Cohen (1966), which permits one to quantitatively describe the relationship between conjoint bilinear signal representations. The paper discusses the comparative capacities of these representations to provide high conjoint resolution.