the first pair of left and right views and the second frame includes the even columns of the second pair of left and right views for streams formatted according to fig4 a and 4 b vertical de interlacing may be used of the type used for conventional interlaced streams for streams formatted according to fig4 c and 4 d horizontal de interlacing may be performed to achieve this the vertical de interlacing techniques may simply be transposed the de interlacing principles can also apply if quincunx decimation matrices are used fig2 c views decimated by way of these matrices can be transported in either of the tab and sbs formats according to the compacting direction of the pixels the parities 1 and 0 used in fig4 a to 4 d then respectively identify the first and second matrices of fig2 c diagonal de interlacing may be operated on the frames constituted in this way variants of complementary parity to each of the fig4 a to 4 d are naturally available fig5 schematically illustrates a processing chain that can be suitable for processing an interlaced stream according to the formats of fig4 a and 4 b such a processing chain may be available in typical hd reception equipment in particular to process the 1080i format according to this format each frame includes 540 lines and the parity of the lines alternates from one frame to the next.