| 摘要 |
A data compression apparatus 100 and method suitable for image data 50 assembles pixel values 52 into at least one group 55 with a positional index 56. An encoding unit 130 sets a maximum bit plane according to a highest value in the group, and encodes the data values sequentially along the group using iteratively reduced bit plane levels until reaching a lowest bit plane or exhausting the data values in the group, including recording the positional index where the bit plane level is changed, to provide a compressed dataset. |
