The use of particle filters requires the carrier to complete a continuous

recursive filter location over a period of time, and it suffers the problem of filtering divergence [16].

To mention but a few, in [24], a finite-horizon

recursive filter was designed for discrete-time-varying nonlinear system with stochastic nonlinearities and randomly occurring measurement delays which made the filtering error minimum at each sampling time.

This operation was implemented by applying a

recursive filter to the original signal both forward and backward in time [24].

where [a.sub.1], [a.sub.2], ..., [a.sub.m] are the coefficients of the

recursive filter and et represent white noise errors.

Spasic, "On the sensitivity of the

recursive filter with arbitrary order predictor in DPCM system", Serbian Journal of Electrical Engineering, vol.

Our method use

recursive filter on multi-layer of homogeneity to carry out the classification.

Table I notes that in the implementation of the filter unit 34% of embedded multipliers, 1% of the logic elements and 0 % of bits of memory are used, this is evidence that space is available within FPGA to increase the degree of parallelism in the design and simultaneously use multiple filter units, which would provide the coefficients for higher levels in less time occupying all the available multiplier, in applications where FPGA is used only for implementation phase of this transformation is a viable option, but in applications where you need to implement additional functions on the FPGA using the

recursive filter units for the calculation of the following levels of transformation is necessary.

Kang, "Fast multi-exposure image fusion with median filter and

recursive filter," IEEE Transactions on Consumer Electronics, vol.

Here, we combine the fusion and denoising together and directly deal with noises on the coefficients using the

recursive filter. Superior to the separate fusion and denoising based on multiscale transforms, our method will reduce the error only due to the need to perform the decomposition and reconstruction once.

The use of a

recursive filter has been tested with the 3DVAR technique to improve the quality and efficiency of the analysis [18].

After respiration separation, the heartbeat signal is extracted from residual signal with moving target indicator (MTI)

recursive filter and high order cumulant (HOC).

In addition, tuning of the filter using varactors and optical control was demonstrated.[7,8] Transversal and

recursive filter techniques have been taken from the digital filter domain and applied to microwave filters.[9-11] Active filters can be designed using novel active resonator types.