Hardware-friendly transform method in codecs for plenoptic point clouds

A method of Hardware-friendly transform in codecs for plenoptic point clouds, comprising:

• obtaining plenoptic samples vector v;
• transforming the vector v from a forward matrix MN;
• obtaining the transformed vector t;
• encoding the transformed vector t into a binary file and sending the encoded binary file to a decoder;
• decoding the binary file into a received vector t′;
• padding the received vector t′ with K zeros, to form the vector {circumflex over (t)},
• performing the inverse transform with the inverse transform matrix OL in vector {circumflex over (t)}, generating the vector {circumflex over (v)};
• and
• discarding last K values of the vector {circumflex over (v)}, generating reconstructed vector v′, such that v′=v if t′=t,
• wherein the reconstructed vector v′ follows the following relationship, assuming t′=t:
• v
• ′
• =
• [
• I
• 2
• M
• 0
• 2
• M
• ×
• K
• ]
• ︸
• Discarding
• ×
• (
• F
• 2
• M
• )
• -
• 1
• ×
• [
• I
• 2
• M
• 0
• K
• ×
• 2
• M
• ]
• ×
• ︷
• Padding
• ⁢
• M
• N
• ×
• ︸
• t
• ′
• =
• t
• v
• such that:
• [
• I
• 0
• ]
• ×
• (
• F
• 2
• M
• )
• -
• 1
• ×
• [
• I
• 0
• ]
• ×
• M
• N
• =
• I
• N
• in which F2M is a power of two sized transform, MN is a direct transform matrix of arbitrary size N.