Efficient content compression and decompression system and method

• US 8,811,736 B2
• Filed: 06/10/2013
• Issued: 08/19/2014
• Est. Priority Date: 04/28/2006
• Status: Active Grant

• Current Assignee: Cinova Media
• Original Assignee: Cinova Media
• Inventors: Islam, Asad
• Primary Examiner(s): Akhavannik, Hadi
• Application Number:
  US13/914,587
• Publication Number:
  US 20130272622A1
• Time in Patent Office: 435 Days
• Field of Search: 382/166
• US Class Current: 382/166
• CPC Class Codes: G06T 9/005 Statistical coding, e.g. Huffman, run length coding
• CPC Class Codes: G06T 9/007 Transform coding, e.g. discrete cosine transform
• CPC Class Codes: H04N 19/132 Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• CPC Class Codes: H04N 19/154 Measured or subjectively estimated visual quality after decoding, e.g. measurement of distortion use of rate-distortion criteria H04N19/147
• CPC Class Codes: H04N 19/162 User input
• CPC Class Codes: H04N 19/184 the unit being bits, e.g. of the compressed video stream
• CPC Class Codes: H04N 19/44 Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
• CPC Class Codes: H04N 19/60 using transform coding
• CPC Class Codes: H04N 19/85 using pre-processing or post-processing specially adapted for video compression

Abstract

A content compression/compression system and method are disclosed in which a pre-processing step is performed before any compression and a post-processing step is performed once a compressed piece of content is decompressed.

Claims

1. A method for compressing a piece of video content, the method comprising:

suppressing one or more least significant raw data portions in a piece of video content to generate a pre-processed piece of video content; and

compressing the pre-processed piece of video content using discrete cosine transform based video compression that reduces the amount of data.

2. The method of claim 1, wherein each least significant data portion further comprises a bit-plane.

3. The method of claim 2, wherein suppressing one or more least significant raw data portions further comprises removing the one or more least significant bit-planes.

4. The method of claim 2, wherein suppressing one or more least significant raw data portions further comprises setting a plurality of bits in the one or more least significant bit-planes to a single value that is one of “

1” and

“

0”

.

5. The method of claim 1, wherein the discrete cosine transform based video compression is one of motion JPEG, motion JPEG 2000, H.263, MPEG-4 and H.264.

6. A method for decompressing a compressed piece of video content, the method comprising:

decompressing a compressed piece of video content using discrete cosine transform based video compression to generate a decompressed piece of content wherein the compressed piece of video content had been pre-processed to suppress one or more least significant unconverted data portions; and

regenerating the suppressed one or more least significant data portions.

7. The method of claim 6, wherein the one or more least significant data portions further comprises one or more bit-planes.

8. The method of claim 7, wherein regenerating the suppressed one or more least significant data portions further comprises inserting a number of least significant bit-planes into the decompressed piece of video content based on the number of least significant bit-planes removed from an original piece of video content that was compressed.

9. The method of claim 8, wherein the inserting a number of least significant bit-planes further comprises distributing a plurality of bits in each least significant bit-plane.

10. The method of claim 9, wherein distributing the plurality of bits further comprises one of inserting “

0”

bits into the least significant bit-plane, inserting “

1”

bits into the least significant bit-plane and inserting random bit into the least significant bit-plane.

11. The method of claim 6, wherein the discrete cosine transform based video compression is one of motion JPEG, motion JPEG 2000, H.263, MPEG-4 and H.264.