Unsupervised segmentation of textured images using a hierarchical neural structure

(ii) Use of multiplier blocks can drastically change the complexity relations between different structures. Despite using almost twice the wordlength, and many more coefficients (corresponding to having almost 2.5 times the complexity using the C, measure), the direct forms require similar numbers of adders to the waveform. Similarly, but less dramatically, the cascade and parallel forms are significantly better than wave whereas the C, measure indicates they should be inferior. The wave filter loses out on two counts. Apart from the isolation of its coefficients, which prohibits the use of multiplier blocks, the wave structure has a much larger number of structural adders, which were not counted towards complexity in the C, measure.