The original images were processed with the histogram equalization and spatial-domain high pass filtering method.

By means of experiments the performances of anti noise and background suppression and false target suppression are compared between order morphology filtering and high pass filtering.

As the further research in this area, constant statistics correction (CSC), temporal high pass filtering correction (THPFC) and artificial neural network correction (ANNC) are presented simply at the same time.

In seismic data process using conventional method,high pass filtering is usually carried out on seismic record to attenuate the low frequency surface wave without taking the characteristic of fre- quency attenuation into consideration.

The state of process variables are transformed by a high-pass filter for system extension,then PCA is applied to the output of the extended system to develop a statistical model,by which the process monitoring and fault diagnosis are both available.

By use of the high-pass filter the higher-order harmonics are restrained and the compensating range is enlarged, and the compensation result of low-order harmonics is improved by control delay compensation module.

In this paper,the filter circuits of the Electroencephalogram signal sampling system is designed that include low-pass filter,high-pass filter and 50 Hz-trap filter,and simulation is made on Multisim.

Multi-spectral image fusion method based on high pass filter;

Analysis and design of FIR digital high pass filter based on the MATLAB;

Secondly,the more details in the cloud region was exposed after the convolution between the cloud region and a high pass filter.