Ideal shrinking and expansion of discrete sequences (1986)
We describe ideal methods for shrinking or expanding a discrete sequence, image, or image sequence. The methods are ideal in the sense that they preserve the frequency spectrum of the input up to the Nyqvist limit of the input or output, whichever is smaller. fast implementations that make use of the discrete Fourier transform or the discrete Hartley transform are described. The techniques lead to a new multi-resolution image pyramid.
discrete, expansion, Ideal, sequences, shrinking
NASA Technical Memorandum 88202 |