Fig. 17

Procedure of compressing the sub-cells on the layers \(k=0,1,...,k_{\mathrm {max}}-1\) resulting from the B-QTD. The layers are transformed to the corresponding pixel-images \(\mathcal {I}_0,\mathcal {I}_1,...,\mathcal {I}_{k_{\mathrm {max}}-1}\), all having the same resolution \(2^{k_{\mathrm {max}}-1} \times 2^{k_{\mathrm {max}}-1}\). After the final pixel image is created, the procedure is identical to the one depicted in Fig. 11