Fuzzy logic based filter architecture for video applications and corresponding filtering method
AssigneesSGS-Thomson Microelectronics S.A., Consorzio per la Ricerca sulla Microelettronica nel Mezzogiorno
InventorsMassimo Mancuso, Rinaldo Poluzzi, Gianguido Rizzotto
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Abstract
A filter architecture for high-resolution video applications of the type comprising at least one filter block having a plurality of digital inputs which receive through an interface components of a television signal and some outputs through which to take the result of a filtering operation for noise associated with the television signal also comprises in the filter block at least one interpolator block connected to said inputs and operating with fuzzy logic to execute a television signal scanning conversion to be presented on additional outputs of the filter block.
Claims11
A device for filtering a television signal, comprising:
- a fuzzy logic calculation block having a plurality of inputs for receiving components of the television signal and operating with fuzzy logic procedures applied to the received components to provide an output indicative of a direction of highest correlation of two consecutive image fields in the interlaced television signal;
- and
- a filter having inputs connected to the plurality of inputs of the fuzzy logic calculation block for receiving the components of the television signal and having a first set of outputs for providing a noise-reduced television signal according to the output of the fuzzy logic calculation block and having a second set of outputs for providing a scan-converted television signal according to the output of the fuzzy logic calculation block.
A method for filtering a television signal, comprising the steps of:
- receiving components of the television signal;
- performing fuzzy logic inference operations on the received components to determine a direction of highest correlation of two consecutive image fields in the television signal;
- performing recursive noise filtering on the received components according to the determined direction of highest correlation;
- and
- interpolating the components of the television signal to perform scan rate conversion of the television signal according to the determined direction of highest correlation.
Dependencies are inferred from the claim text.