VIDEO PROCESSING METHOD AND SYSTEM AND RELATED DEVICE

• US 20140072051A1
• Filed: 11/14/2013
• Published: 03/13/2014
• Est. Priority Date: 11/02/2011
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: WANG, Pulin, QIN, Yongning
• Granted Patent: US 9,083,954 B2
• Time in Patent Office: Days
• US Class Current: 375/240.16
• 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 19/51 Motion estimation or motion compensation
• CPC Class Codes: H04N 19/61 in combination with predictive coding
• CPC Class Codes: H04N 19/85 using pre-processing or post-processing specially adapted for video compression

Abstract

A video processing method and system and a related device are disclosed, an encoder sends a method for compressing a pixel value of a video image to a decoder, the method includes a mapping between a pixel value of the video image before compression and a pixel value of the video image after the compression; compressing, by the encoder according to the method for compressing a pixel value, the pixel value of the video image to obtain a video image to be encoded; encoding, by the encoder, the video image to be encoded to obtain a video image encoded stream; and sending, by the encoder, the video image encoded stream to the decoder, the decoder receives and decodes the video image encoded stream to obtain a decoded video image, and decompresses a pixel value of the decoded video image to restore the pixel value of the video image before compression.

Claims

1. A video processing method, comprising:

sending, by an encoder, a method for compressing a pixel value of a video image to a decoder, wherein the method for compressing the pixel value comprises a mapping between a pixel value of the video image before compression and a pixel value of the video image after the compression;

compressing, by the encoder, the pixel value of the video image according to the method for compressing a pixel value of the video image to obtain a video image to be encoded;

encoding, by the encoder, the video image to be encoded to obtain a video image encoded stream; and

sending, by the encoder, the video image encoded stream to the decoder, so that the decoder receives and decodes the video image encoded stream to obtain a decoded video image and then decompresses a pixel value of the decoded video image according to the method for compressing the pixel value of the video image to restore the pixel value of the video image before compression from the pixel value of the decoded video image.

2. The method according to claim 1, wherein the pixel value of the video image after the compression is obtained by rightward moving the pixel value of the video image before the compression by at least one bit.

3. The method according to claim 1, wherein the pixel value of the video image after the compression is obtained by multiplying 1/n by the pixel value of the video image before the compression, and n is a natural number.

4. The method according to claim 1, wherein the sending, by an encoder, a method for compressing a pixel value of a video image to a decoder comprises:

encapsulating, by the encoder, the method for compressing the pixel value of the video image in a valid payload data field of an H.264 standard-based Supplemental Enhancement Information (SEI) packet; and

sending, by the encoder, to the decoder the SEI packet in which the method for compressing the pixel value of the video image is encapsulated.

5. The method according to claim 1, wherein the sending, by the encoder, the method for compressing the pixel value of the video image to the decoder comprises:

sending, by the encoder, an identity ID of the method for compressing the pixel value of the video image to the decoder, wherein the identity ID represents different methods for compressing the pixel value of the video image.

6. The method according to claim 1, wherein the encoding, by the encoder, the video image to be encoded to obtain the video image encoded stream comprises:

encoding, by the encoder according to an H.264 standard, the video image to be encoded to obtain the video image encoded stream.

7. A video processing method, comprising:

receiving, by a decoder, a method for compressing a pixel value of a video image, wherein the method for compressing the pixel value of the video image is sent by an encoder and comprises a mapping between a pixel value of the video image before compression and a pixel value of the video image after the compression;

receiving, by the decoder, a video image encoded stream sent by the encoder, wherein the video image encoded stream is sent after the encoder compresses the pixel value of the video image according to the method for compressing the pixel value of the video image to obtain a video image to be encoded and encodes the video image to be encoded;

decoding, by the decoder, the video image encoded stream to obtain a decoded video image; and

decompressing, by the decoder, a pixel value of the decoded video image according to the method for compressing the pixel value of the video image to restore the pixel value of the video image before compression from the pixel value of the decoded video image.

8. The method according to claim 7, wherein the pixel value of the video image after the compression is obtained by rightward moving the pixel value of the video image before the compression by at least one bit.

9. The method according to claim 7, wherein the pixel value of the video image after the compression is obtained by multiplying 1/n by the pixel value of the video image before the compression, and n is a natural number.

10. The method according to claim 7, wherein the receiving, by the decoder, the method for compressing the pixel value of the video image comprises:

receiving, by the decoder, an H.264 standard-based Supplemental Enhancement Information (SEI) packet sent by the encoder, wherein the method for compressing the pixel value of the video image is encapsulated in a valid payload data field of the SEI packet; and

obtaining, by the decoder, the method for compressing the pixel value of the video image by parsing the SEI packet, and storing the method for compressing the pixel value of the video image.

11. The method according to claim 7, wherein the receiving, by the decoder, the method for compressing the pixel value of the video image comprises:

receiving, by the decoder, an identity ID of the method for compressing the pixel value of the video image, wherein the method for compressing the pixel value of the video is sent by the encoder, and the identity ID represents different methods for compressing the pixel value of the video image; and

storing, by the decoder, the identity ID of the method for compressing the pixel value of the video image.

12. The method according to claim 7, wherein the decoding, by the decoder, the video image encoded stream to obtain the decoded video image comprises:

decoding, by the decoder according to an H.264 standard, the video image encoded stream to obtain the decoded video image.

13. An encoder, comprising:

a notifying unit, configured to send a method for compressing a pixel value of a video image to a decoder, wherein the method for compressing the pixel value comprises a mapping between a pixel value of the video image before compression and a pixel value of the video image after the compression;

a compressing unit, configured to compress the pixel value of the video image according to the method for compressing the pixel value of the video image to obtain a video image to be encoded;

an encoding unit, configured to encode the video image to be encoded to obtain a video image encoded stream; and

a sending unit, configured to send the video image encoded stream to the decoder, so that the decoder receives and decodes the video image encoded stream to obtain a decoded video image and then decompresses a pixel value of the decoded video image according to the method for compressing the pixel value of the video image to restore the pixel value of the video image before compression from the pixel value of the decoded video image.

14. The encoder according to claim 13, wherein the pixel value of the video image after the compression is obtained by rightward moving the pixel value of the video image before the compression by at least one bit.

15. The encoder according to claim 13, wherein the pixel value of the video image after the compression is obtained by multiplying 1/n by the pixel value of the video image before the compression, and n is a natural number.

16. The encoder according to claim 13, wherein the notifying unit is specifically configured to encapsulate the method for compressing the pixel value of the video image in a valid payload data field of an H.264 standard-based Supplemental Enhancement Information (SEI) packet and send the decoder the SEI packet in which the method for compressing the pixel value is encapsulated.

17. The encoder according to claim 13, wherein the notifying unit is configured to send an identity ID of the method for compressing the pixel value of the video image to the decoder, and the identity ID represents different methods for compressing the pixel value of the video image.

18. A decoder, comprising:

a recording unit, configured to receive and record a method for compressing a pixel value of a video image, wherein the method for compressing the pixel value of the video image is sent by an encoder and comprises a mapping between a pixel value of the video image before compression and a pixel value of the video image after the compression;

a receiving unit, configured to receive a video image encoded stream sent by the encoder, wherein the video image encoded stream is sent after the encoder compresses the pixel value of the video image according to the method for compressing the pixel value of the video image to obtain a video image to be encoded and encodes the video image to be encoded;

a decoding unit, configured to decode the video image encoded stream to obtain a decoded video image; and

a restoring unit, configured to decompress a pixel value of the decoded video image according to the method for compressing the pixel value of the video image to restore the pixel value of the video image before compression from the pixel value of the decoded video image.

19. The decoder according to claim 18, wherein the pixel value of the video image after the compression is obtained by rightward moving the pixel value of the video image before the compression by at least one bit;

or, the pixel value of the video image after the compression is obtained by multiplying 1/n by the pixel value of the video image before the compression, and n is a natural number.

20. The decoder according to claim 18, wherein the pixel value of the video image after the compression is obtained by multiplying 1/n by the pixel value of the video image before the compression, and n is a natural number.

21. The decoder according to claim 18, wherein the recording unit is specifically configured to receive an H.264 standard-based Supplemental Enhancement Information (SEI) packet sent by the encoder, wherein the method for compressing the pixel value of the video image is encapsulated in a valid payload data field of the SEI packet, and obtain the method for compressing the pixel value of the video image by parsing the SEI packet and recording the method for compressing the pixel value of the video image.

22. The decoder according to claim 18, wherein the recording unit is configured to receive an identity ID of the method for compressing the pixel value of the video image, wherein the method for compressing the pixel value of the video image is sent by the encoder, and recording the identity ID of the method for compressing the pixel value of the video image, wherein the identity ID represents different methods for compressing the pixel value of the video image.

23. A video processing system, comprising an encoder and a decoder, wherein:

the encoder is configured to send a method for compressing a pixel value of a video image to the decoder, compress a pixel value of the video image according to the method for compressing the pixel value of the video image to obtain a video image to be encoded, encode the video image to be encoded to obtain a video image encoded stream, and send the video image encoded stream to the decoder, wherein the method for compressing the pixel value of the video image comprises a mapping between a pixel value of the video image before compression and a pixel value of the video image after the compression; and

the decoder is configured to receive and record the method for compressing the pixel value of the video image, wherein the method for compressing the pixel value of the video image is sent by the encoder, receive the video image encoded stream sent by the encoder, decode the video image encoded stream to obtain a decoded video image, and decompress a pixel value of the decoded video image according to the method for compressing the pixel value of the video image to restore the pixel value of the video image before compression from the pixel value of the decoded video image.

24. The video processing system according to claim 23, wherein the pixel value of the video image after the compression is obtained by rightward moving the pixel value of the video image before the compression by at least one bit.

25. The video processing system according to claim 23, wherein the pixel value of the video image after the compression is obtained by multiplying 1/n by the pixel value of the video image before the compression, and n is a natural number.