METHOD OF DATA COMPRESSION PREPROCESSING TAILORED TO DATA OF MEASUREMENTS OF ELECTRO-CORTICOGRAPHIC SIGNALS (ECoG) AND SYSTEM FOR ACQUIRING AND TRANSMITTING ECoG DATA
COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
发明人:
Michael FOERSTER,David DEHAENE
申请号：
US14971960
公开号：
US20160174863A1
申请日:
2015.12.16
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A method of compression preprocessing of raw data ui(tN) of measurements of electrocorticographic signals (ECoG) evolving over time with the aid of electrodes disposed in direct contact with a cortex comprises an actual step of compression preprocessing in which each raw signal ui(tN) acquired by the observed electrode i is transformed into a preprocessed signal εi (tN) equal to the difference between a first term and a second term and appropriate for a second entropy encoding step. The first term is equal to the raw signal acquired at the electrode i at the current instant tN, and the second term is a prediction function fi which depends on past raw signals observed in a near past at at least neighbour electrodes σi(j) of the observed electrode or at most at neighbour electrodes σi(j) of the observed electrode i and at the observed electrode.
