Systems and methods for encoding hyperspectral data with variable band resolutions
An encoder may perform a dynamic encoding that adapts the encoding of hyperspectral data according to the number of bands of the electromagnetic spectrum that are captured by different imaging devices, the amount of data that is contained in each band, and/or encoding criteria that are specified by a user or that are automatically generated by the encoder for an optimal encoding of the hyperspectral data. The encoder may receive hyperspectral data for different electromagnetic spectrum bands. The encoder may determine an encoding resolution based on one or more of a number of bands and a maximum resolution within the received bands. The encoder may configure a block size for a file format that is used to store an encoding of the hyperspectral data based on the encoding resolution, and may encode the hyperspectral data contained within each band to at least one block of the block size.
1. A method comprising:
receiving image data for a plurality of bands of the electromagnetic spectrum;
encoding a first band of the plurality of bands with a first number of bits;
encoding a second band of the plurality of bands with a second number of bits that is different than the first number of bits;
generating a file with the first band encoded in the first number of bits and the second band encoded in the second number of bits; and
defining metadata for the file, the metadata comprising a first identifier for locating the first band in the file, and a second identifier for locating the second band in the file.
2. The method of claim 1 further comprising:
associating the first identifier to a location of a first block having a first size equal to the first number of bits; and
associating the second identifier to a location of a second block having a second size equal to the second number of bits.
3. The method of claim 1 further comprising:
defining the first identifier as a first index corresponding to an index of a first block of the file storing the first number of bits; and
defining the second identifier as a second index corresponding to an index of at least a second block of the file storing the second number of bits.
4. The method of claim 1 further comprising:
defining the first identifier with a first value equal to the first number of bits; and
defining the second identifier with a second value equal to the second number of bits.
5. The method of claim 1 further comprising:
defining the first identifier as a first number of blocks from the file that store the first number of bits; and
defining the second identifier as a second number of blocks from the file that store the second number of bits.
6. The method of claim 1 further comprising:
defining the first identifier with a first frequency of the electromagnetic spectrum spanned by the first band; and
defining the second identifier with a second frequency of the electromagnetic spectrum spanned by the second band.
7. The method of claim 1 further comprising:
defining the first identifier based on a first resolution at which the first band is encoded; and
defining the second identifier based on a second resolution at which the second band is encoded.
8. The method of claim 1 further comprising:
mapping the first identifier to a first block of a plurality of blocks from the file storing the first number of bits; and
mapping the second identifier to at least a second block of the plurality of blocks from the file storing the second number of bits.
9. The method of claim 1 , wherein generating the file comprises:
defining a constant block size for the file;
storing the first number of bits in a first block of the constant block size; and
storing the second number of bits in a second block and a third block of the constant block size.
10. The method of claim 9 , wherein
the metadata further comprises the constant block size for the first block and the second block.
11. The method of claim 9 , wherein
the first identifier identifies the first block storing the first number of bits, and the second identifier identifies the second block and the third block storing the second number of bits.
12. The method of claim 1 , wherein generating the file comprises:
defining a variable block size for the file;
storing the first number of bits in a first block of a first size corresponding to the first number of bits; and
storing the second number of bits in a second block of a second size corresponding to the second number of bits.
13. The method of claim 1 , wherein generating the file comprises:
storing the first number of bits in a first block of a constant size equal to the first number of bits;
storing the second number of bits in a second block of the constant size; and
padding the second block with additional bits based on a difference between the constant size and the second number of bits.
14. The method of claim 1 , wherein generating the file comprises:
storing the first number of bits in a first block and a second block that are each a same size, and wherein the same size of one of the first block or the second block is less than the first number of bits; and
storing the second number of bits in a third block of the same size that is equal to or greater than the second number of bits.
15. The method of claim 1 , wherein the first band corresponds to a visible light band of the electromagnetic spectrum, and wherein the second band corresponds to an infrared or ultraviolet band of the electromagnetic spectrum.
16. An encoder comprising:
one or more hardware processors configured to:
receive image data for a plurality of bands of the electromagnetic spectrum;
encode a first band of the plurality of bands with a first number of bits;
encode a second band of the plurality of bands with a second number of bits that is different than the first number of bits;
generate a file with the first band encoded in the first number of bits and the second band encoded in the second number of bits; and
define metadata for the file, the metadata comprising a first identifier for locating the first band in the file, and a second identifier for locating the second band in the file.
17. A method comprising:
receiving image data for a plurality of bands of the electromagnetic spectrum;
encoding a first band of the plurality of bands with a first number of bits;
encoding a second band of the plurality of bands with a second number of bits that is different than the first number of bits; and
generating a file with the first band encoded in the first number of bits and the second band encoded in the second number of bits, wherein generating the file comprises:
defining a constant block size for the file;
storing the first number of bits in a first block of the constant block size; and
storing the second number of bits in a second block and a third block of the constant block size.
18. An encoder comprising:
one or more hardware processors configured to:
receive image data for a plurality of bands of the electromagnetic spectrum;
encode a first band of the plurality of bands with a first number of bits;
encode a second band of the plurality of bands with a second number of bits that is different than the first number of bits; and
generate a file with the first band encoded in the first number of bits and the second band encoded in the second number of bits, wherein generating the file comprises:
defining a constant block size for the file;
storing the first number of bits in a first block of the constant block size; and
storing the second number of bits in a second block and a third block of the constant block size.
19. A method comprising:
receiving image data for a plurality of bands of the electromagnetic spectrum;
encoding a first band of the plurality of bands with a first number of bits;
encoding a second band of the plurality of bands with a second number of bits that is different than the first number of bits; and
generating a file with the first band encoded in the first number of bits and the second band encoded in the second number of bits, wherein generating the file comprises:
defining a variable block size for the file;
storing the first number of bits in a first block of a first size corresponding to the first number of bits; and
storing the second number of bits in a second block of a second size corresponding to the second number of bits.
20. An encoder comprising:
one or more hardware processors configured to:
receive image data for a plurality of bands of the electromagnetic spectrum;
encode a first band of the plurality of bands with a first number of bits;
encode a second band of the plurality of bands with a second number of bits that is different than the first number of bits; and
generate a file with the first band encoded in the first number of bits and the second band encoded in the second number of bits, wherein generating the file comprises:
defining a variable block size for the file;
storing the first number of bits in a first block of a first size corresponding to the first number of bits; and
storing the second number of bits in a second block of a second size corresponding to the second number of bits.