DVC AS GENERIC FILE FORMAT FOR PLENOPTIC CAMERA

• US 20100142839A1
• Filed: 11/17/2009
• Published: 06/10/2010
• Est. Priority Date: 11/19/2008
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: LAKUS-BECKER, Axel
• Granted Patent: US 8,634,663 B2
• Time in Patent Office: Days
• US Class Current: 382/244
• CPC Class Codes: H04N 13/232 using fly-eye lenses, e.g. arrangements of circular lenses
• CPC Class Codes: H04N 19/105 Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• CPC Class Codes: H04N 19/12 Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
• CPC Class Codes: H04N 19/14 Coding unit complexity, e.g. amount of activity or edge presence estimation H04N19/146 takes precedence
• CPC Class Codes: H04N 19/182 the unit being a pixel
• CPC Class Codes: H04N 19/184 the unit being bits, e.g. of the compressed video stream
• CPC Class Codes: H04N 19/46 Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence
• CPC Class Codes: H04N 19/91 Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
• CPC Class Codes: H04N 19/93 Run-length coding

Abstract

A computer implemented method of storing pixel data corresponding to a pixel is disclosed. A first and a second set of pixel data is determined for the pixel. Parity bits for the first set of pixel data are generated, using error correction. An encoded version of the first set of pixel data including the parity bits is stored. An encoded version of the second set of pixel data is stored, using lossless data compression, for use in decoding the first set of pixel data.

Claims

1. A computer implemented method of storing pixel data corresponding to a pixel, said method comprising the steps of:

determining a first and a second set of pixel data for the pixel;

generating parity bits for the first set of pixel data, using error correction;

storing an encoded version of the first set of pixel data including the parity bits; and

storing an encoded version of said second set of pixel data, using lossless data compression, for use in decoding the first set of pixel data.

2. The method according to claim 1, further comprising the step of decoding the first set of pixel data using the second set of pixel data and the parity bits.

3. The method according to claim 1, wherein the first set of pixel data is compressed according to content of an image represented by the second set of pixel data.

4. The method according to claim 3, further comprising the step of isolating flat regions of the image.

5. The method according to claim 1, wherein the pixel data is captured using a plurality of sensor cells.

6. The method according to claim 1, wherein parity bits are generated for each bit plane of the first set of pixel data.

7. The method according to claim 1, further including the step of generating side information for the second set of pixel data.

8. The method according to claim 1, wherein the side information is an approximation of the second set of pixel data.

9. An apparatus for storing pixel data corresponding to a pixel, said apparatus comprising:

to means for determining a first and a second set of pixel data for the pixel;

means for generating parity bits for the first set of pixel data, using error correction;

means for storing an encoded version of the first set of pixel data including the parity bits; and

means for storing an encoded version of said second set of pixel data, using lossless data compression, for use in decoding the first set of pixel data.

10. A system for storing pixel data corresponding to a pixel, said system comprising:

a memory for storing data and a computer program; and

a processor coupled to said memory executing said computer program, said computer program comprising instructions for;

determining a first and a second set of pixel data for the pixel;

generating parity bits for the first set of pixel data, using error correction;

storing an encoded version of the first set of pixel data including the parity bits; and

storing an encoded version of said second set of pixel data, using lossless data compression, for use in decoding the first set of pixel data.

11. A computer readable medium having recorded thereon a computer program for storing pixel data corresponding to a pixel, said program comprising:

code for determining a first and a second set of pixel data for the pixel;

code for generating parity bits for the first set of pixel data, using error correction;

code for storing an encoded version of the first set of pixel data including the parity bits; and

code for storing an encoded version of said second set of pixel data, using lossless data compression, for use in decoding the first set of pixel data.

12. A computer implemented method of decoding pixel data corresponding to a pixel, said method comprising the steps of:

determining a first and a second set of pixel data for the pixel;

generating parity bits for the first set of pixel data, using error correction;

storing an encoded version of the first set of pixel data including the parity bits;

storing an encoded version of said second set of pixel data, using lossless data compression, for use in decoding the first set of pixel data; and

decoding the first set of pixel data using the second set of pixel data and the parity bits.

13. The method according to claim 12, wherein the first set of pixel data is compressed according to content of an image represented by the second set of pixel data.

14. The method according to claim 13, further comprising the step of isolating flat regions of the image.

15. The method according to claim 12, wherein the pixel data is captured using a plurality of sensor cells.

16. The method according to claim 12, wherein parity bits are generated for each bit plane of the first set of pixel data.

17. An apparatus for decoding pixel data corresponding to a pixel, said apparatus comprising:

means for determining a first and a second set of pixel data for the pixel;

means for generating parity bits for the first set of pixel data, using error correction;

means for storing an encoded version of the first set of pixel data including the parity bits;

means for storing an encoded version of said second set of pixel data, using lossless data compression, for use in decoding the first set of pixel data; and

means for decoding the first set of pixel data using the second set of pixel data and the parity bits.

18. An apparatus for decoding pixel data corresponding to a pixel, said apparatus comprising:

a memory for storing data and a computer program; and

a processor coupled to said memory executing said computer program, said computer program comprising instructions for;

determining a first and a second set of pixel data for the pixel;

generating parity bits for the first set of pixel data, using error correction;

storing an encoded version of the first set of pixel data including the parity bits;

storing an encoded version of said second set of pixel data, using lossless data compression, for use in decoding the first set of pixel data; and

decoding the first set of pixel data using the second set of pixel data and the parity bits.

19. A computer readable medium having recorded thereon a computer program for decoding pixel data corresponding to a pixel, said program comprising:

code for determining a first and a second set of pixel data for the pixel;

code for generating parity bits for the first set of pixel data, using error correction;

code for storing an encoded version of the first set of pixel data including the parity bits;

code for storing an encoded version of said second set of pixel data, using lossless data compression, for use in decoding the first set of pixel data; and

code for decoding the first set of pixel data using the second set of pixel data and the parity bits.

20. A method of storing pixel values for a portion of an image captured using a plurality of sensor cells in a sensor cell array, the plurality of sensor cells being associated with at least one micro lens in a micro lens array and arranged to form a sensor cell sub-array to capture a single pixel value associated with an output image, the method comprising the steps of:

storing lossless bits as a lossless representation of pixels values from a first subset of the plurality of sensor cells;

generating parity bits for pixel values from a second subset of the plurality of sensor cells, wherein the second subset of sensor cells is unique to the first subset of sensor cells; and

storing the generated parity bits for use during decoding with the lossless bits to generate an estimation of the pixel value associated with the output image.