System and method for encoding and decoding video

• US 20050169544A1
• Filed: 08/31/2004
• Published: 08/04/2005
• Est. Priority Date: 02/02/2004
• Status: Abandoned Application

• Current Assignee: Media World Communications Limited
• Original Assignee: Media World Communications Limited
• Inventors: Clark, Adam Leslie
• Application Number:
  US10/931,520
• Publication Number:
  US 20050169544A1
• Time in Patent Office: Days
• US Class Current: 382/236
• CPC Class Codes: H04N 1/41 Bandwidth or redundancy reduction by scanning H04N1/17 ; methods or arrangements for coding, decoding, compressing or decompressing digital video signals H04N19/00
• CPC Class Codes: H04N 19/186 the unit being a colour or a chrominance component

Abstract

Data values are encoded by mapping multi-dimensional parameters of the data values to respective parameters having fewer dimensions and creating a table of encoded data values in which the data values are represented by their respective encoded counterparts and in which redundancies between the encoded data values are reduced; and transmitting the table of encoded data values. Additionally, a set of reference data values may be transmitted for use by a decoder when decoding the table of encoded data values. The data values may be scaled prior to creating the table of encoded data values.

Claims

1. A method, comprising encoding data values by mapping multi-dimensional parameters of the data values to respective parameters having fewer dimensions and creating a table of encoded data values in which the data values are represented by their respective encoded counterparts and in which redundancies between the encoded data values are reduced;

and transmitting the table of encoded data values.

2. The method of claim 1, further comprising transmitting along with the table of encoded data values a set of reference data values for use by a decoder when decoding the table of encoded data values.

3. The method of claim 2, wherein the data values comprise pixels.

4. The method of claim 3, wherein the reference data values comprise reference pixels for a frame of video information.

5. The method of claim 1, further comprising scaling one or more of the data values prior to creating the table of encoded data values.

6. The method of claim 1, wherein the data values comprise pixels and the mapping is performed by comparing each pixel to a reference color pallet and selecting a closest matching encoded color value therefrom.

7. The method of claim 6, further comprising transmitting the reference color pallet along with the table of encoded data values for use by a decoder when decoding the table of encoded data values.

8. The method of claim 6, further comprising transmitting an indication of the reference color pallet used during the mapping along with the table of encoded data values for use by a decoder when decoding the table of encoded data values.

9. A method, comprising encoding a digital video file by reducing color fidelity of each pixel of each frame of the digital video file using a set of reference pixels for each such frame;

and reducing intra-frame redundancies between such pixels having reduced color fidelity.

10. The method of claim 9, further comprising reducing inter-frame redundancies between groups of frames of the digital video file.

11. The method of claim 10, wherein the intra-frame redundancies are reduced by encoding runs of similar pixels having reduced color fidelity so as to reduce a number of bits required to represent such runs of pixels.

12. The method of claim 10, wherein the inter-frame redundancies are reduced by encoding runs of similar pixels having reduced color fidelity common to more than one frame in each group of frames.

13. The method of claim 10, further comprising decoding the digital video file by reproducing each of the frames from the reference pixels for each such frame.

14. A method, comprising decoding an encoded digital video file by reconstructing a table of encoded pixel values into pixel color parameters using a set of reference pixel colors, scaling up the pixel color parameters by a scaling factor associated with the reference pixel colors and presenting one or more frames composed of reconstructed and scaled up pixels via a display device.

15. The method of claim 14, wherein the reference pixel colors are selected from a set of reference pixels transmitted with the encoded digital video file.

16. The method of claim 15, wherein the reference pixels apply on a frame-by-frame basis to the encoded digital video file.

17. The method of claim 15, wherein the reference pixels apply to all frames in the encoded digital video file.

18. The method of claim 14, comprising prior to decoding, creating the encoded digital video file by mapping multi-dimensional pixel parameters of a raw video file to fewer dimensional parameters so as to create the table of encoded pixel values in which the pixel values are represented by encoded counterparts and in which redundancies between the encoded counterpart values are reduced.

19. The method of claim 18, wherein the mapping is performed by comparing each pixel of the raw video file to a reference color pallet and selecting a closest matching encoded color value therefrom.

20. The method of claim 19, wherein the reference color pallet is created on a frame-by-frame basis from the raw video file.