DATA ERROR CONCEALMENT IN FREQUENCY SEPARATED DIGITAL IMAGE DATA

摘要

Error concealment apparatus 900 for concealing corrupted data elements in frequency separated digital image data (such as sub-band coded image data) is described. Depending on the spatial frequency represented by a corrupted data element, one of a number of error concealment means 600, 700 is selected to conceal the error. In this way the error concealment used can be tailored to suit the different properties of the various spatial frequency components in the frequency separated image.