Filtering a collection of samples
AssigneeKoninklijke Philips Electronics N.V.
InventorJean Gobert
Life of this patent
Estimating the term…
Abstract
A collection of samples Si, representing, for example, an image is filtered in the following manner. A distinction is made between valid samples Si+ and non-valid samples Si− on the basis of auxiliary data AUX. Filtered samples So, which are associated with the valid samples Si+, are derived exclusively on the basis of the valid samples Si+. Accordingly, it is prevented that the filtered samples, which are associated with the valid samples, are mixtures of valid and non-valid samples. Such mixtures cause distortion, in particular if the valid and non-valid samples substantially differ in value.
Claims7
A method of filtering a collection of samples, a sample being associated with an auxiliary data item, the method comprising the steps of:
- distinguishing between valid samples and non-valid samples of the collection of samples on the basis of the associated auxiliary data item, wherein valid samples belong to one or more video objects and non-valid samples do not, and
- computing a filtered value of a valid sample on the basis of a weighted combination of a set of values which are derived from input values of valid samples.
A filter arrangement for filtering a collection of samples, said filter arrangement being configured to receive said samples and auxiliary data items associated with said samples, comprises:
- a multiplexing circuit for distinguishing between valid samples and non-valid samples of the collection of samples on the basis of the associated auxiliary data item, wherein valid samples belong to one or more video objects and non-valid samples do not, and
- a filtering circuit for computing a filtered value of a valid sample on the basis of a weighted combination of a set of values which are derived from input values of valid samples.
Dependencies are inferred from the claim text.