| 摘要 |
A method of data processing. The method comprises applying a filter to an input sample set comprising sample values selected from an input sequence of input sample values, so as to generate a corresponding output sample value having an output sample value position with respect to the input sample set, in which the filter has a maximum output range. The method further comprises deriving a permissible output value range from an input group of two or more input sample values in the input sample set which surround the output sample value position, detecting whether the output of the filter is outside the permissible output value range and, if so, limiting the output of the filter to lie within the permissible output value range.
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