Video quality assessment method and apparatus

• US 9,419,875 B2
• Filed: 07/15/2014
• Issued: 08/16/2016
• Est. Priority Date: 04/23/2012
• 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: Gao, Shan, Sun, Lina, Xie, Qingpeng
• Primary Examiner(s): Williams, Jenee
• Application Number:
  US14/331,611
• Publication Number:
  US 20140328198A1
• Time in Patent Office: 763 Days
• US Class Current: 1/1
• CPC Class Codes: H04L 43/0835 One way packet loss
• CPC Class Codes: H04N 17/00 Diagnosis, testing or measuring for television systems or their details
• CPC Class Codes: H04N 17/02 for colour television signals
• CPC Class Codes: H04N 19/89 involving methods or arrangements for detection of transmission errors at the decoder

Abstract

A video quality assessment method and a video quality assessment apparatus are provided. The method includes: acquiring parameter information of video data, where the parameter information includes a bit rate, a frame rate, and packet information; performing calculation according to the bit rate or the frame rate to obtain benchmark video quality of the video data; calculating the number of successively lost packets according to the packet information, and calculating the number of effective packet loss times; performing calculation according to the number of effective packet loss times to obtain video packet loss and distortion quality of the video data; and performing calculation according to the benchmark video quality and the video packet loss and distortion quality to obtain final video quality. Using the number of effective packet loss times can accurately assess videos more effectively and reduce algorithm complexity.

Claims

1. A video quality assessment method, comprising:

acquiring parameter information of video data, wherein the parameter information comprises a bit rate, a frame rate, and packet information;

performing a calculation, according to the bit rate or frame rate, to obtain benchmark video quality of the video data;

calculating a number of successively lost packets according to the packet information, and calculating a number of effective packet loss times according to the number of successively lost packets and a first packet threshold;

performing a calculation according to the number of effective packet loss times to obtain video packet loss and distortion quality of the video data; and

performing a calculation according to the benchmark video quality and the video packet loss and distortion quality to obtain final video quality.

2. The video quality assessment method according to claim 1, wherein calculating a number of effective packet loss times according to the number of successively lost packets and the first packet threshold comprises updating a count value of the number of packet losses according to the number of successively lost packets and the first packet threshold when the number of successively lost packets is greater than the first packet threshold.

3. The video quality assessment method according to claim 2, wherein the method further comprises updating the count value of the number of packet losses according to the number of successively lost packets when the number of successively lost packets is not greater than the first packet threshold.

4. The video quality assessment method according to claim 3, wherein updating the number of effective packet loss times according to the number of successively lost packets comprises:

calculating a number of correctly received packets between two packet losses according to the packet information;

adding one to the count value of the number of packet losses when the number of successively lost packets is not greater than a second packet threshold and the number of correctly received packets is greater than the second packet threshold; and

updating the count value of the number of packet losses according to the number of correctly received packets and the second packet threshold when the number of correctly received packets is not greater than the second packet threshold.

5. The video quality assessment method according to claim 3, wherein updating the count value of the number of packet losses according to the number of successively lost packets further comprises:

calculating the number of correctly received packets between two packet losses according to the packet information;

updating the count value of the number of packet losses according to the number of successively lost packets and the second packet threshold when the number of successively lost packets is greater than a second packet threshold and the number of correctly received packets is greater than the second packet threshold; and

updating the count value of the number of packet losses according to the number of successively lost packets, the number of correctly received packets, and the second packet threshold when the number of correctly received packets is not greater than the second packet threshold.

6. The video quality assessment method according to claim 1, wherein the first packet threshold is set according to the bit rate or the frame rate.

7. A video quality assessment apparatus, comprising:

a non-transitory computer-readable medium having instructions stored thereon; and

a computer processor coupled to the non-transitory computer-readable medium and configured to execute the instructions to;

acquire parameter information of video data, wherein the parameter information comprises a bit rate, a frame rate, and packet information;

perform calculation according to the bit rate or the frame rate obtained by the acquiring module to obtain benchmark video quality of the video data;

calculate a number of successively lost packets according to the packet information, and calculate a number of effective packet loss times according to the number of successively lost packets and a first packet threshold;

perform calculation according to the number of effective packet loss times obtained by the effective packet loss times generating module to obtain video packet loss and distortion quality of the video data; and

perform calculation according to the benchmark video quality obtained by the benchmark quality generating module and the video packet loss and distortion quality obtained by the packet loss and distortion quality generating module to obtain final video quality.

8. The video quality assessment apparatus according to claim 7, wherein the computer processor is configured to execute the instructions to:

determine whether a number of successively lost packets is greater than the first packet threshold; and

update a count value of the number of packet losses according to the number of successively lost packets and the first packet threshold when the number of successively lost packets is greater than the first packet threshold.

9. The video quality assessment apparatus according to claim 8, wherein the computer processor is configured to execute the instructions to update the count value of the number of packet losses according to the number of successively lost packets when the number of successively lost packets is not greater than the first packet threshold.

10. The video quality assessment apparatus according to claim 9, wherein the computer processor is configured to execute the instructions to:

calculate a number of correctly received packets between two packet losses according to the packet information;

add one to the count value of the number of packet losses when the number of successively lost packets is not greater than a second packet threshold and the number of correctly received packets is greater than the second packet threshold; and

update the count value of the number of packet losses according to the number of correctly received packets and the second packet threshold when the number of correctly received packets is not greater than the second packet threshold.

11. The video quality assessment apparatus according to claim 9, wherein the computer processor is configured to execute the instructions to:

calculate the number of correctly received packets between two packet losses according to the packet information;

update the count value of the number of packet losses according to the number of successively lost packets and the second packet threshold when the number of successively lost packets is greater than a second packet threshold and the number of correctly received packets is greater than the second packet threshold; and

update the count value of the number of packet losses according to the number of successively lost packets, the number of correctly received packets, and the second packet threshold when the number of correctly received packets is not greater than the second packet threshold.

12. The video quality assessment apparatus according to claim 7, wherein the first packet threshold is set according to the bit rate or the frame rate.

13. The video quality assessment apparatus according to claim 7, wherein the computer processor is configured to execute the instructions to directly determine a preset level to be the final video quality when the number of effective packet loss times of the video data is greater than a preset third threshold.

14. A video quality assessment apparatus, comprising:

a non-transitory computer-readable medium having instructions stored thereon; and

a computer processor coupled to the non-transitory computer-readable medium and configured to execute the instructions to;

acquire parameter information of video data, wherein the parameter information comprises a bit rate, a frame rate, and packet information;

to perform calculation according to the bit rate or the frame rate obtained by the video parameter collecting module to obtain benchmark video quality of the video data;

to calculate a number of correctly received packets between two successive packet losses according to the packet information, and calculate a number of effective packet loss times according to the number of correctly received packets and a second packet threshold;

to perform calculation according to the number of effective packet loss times obtained by the effective packet loss times acquiring module to obtain video packet loss and distortion quality of the video data; and

perform calculation according to the benchmark video quality and the video packet loss and distortion quality to obtain final video quality.

15. The video quality assessment apparatus according to claim 14, wherein the computer processor is configured to execute the instructions to:

calculate the number of correctly received packets between two successive packet losses according to the packet information; and

add one to a count value of the number of packet losses when the number of correctly received packets is greater than the second packet threshold, and update the count value of the number of packet losses according to the number of correctly received packets and the second packet threshold when the number of correctly received packets is not greater than the second packet threshold.

16. The video quality assessment apparatus according to claim 15, wherein updating the count value of the number of packet losses according to the number of successively lost packets and the first packet threshold comprises:

updating the count value of the number of packet losses according to the number of successively lost packets and the first packet threshold when the number of successively lost packets is greater than the first packet threshold; and

updating the count value of the number of packet losses according to the number of successively lost packets when the number of successively lost packets is not greater than the first packet threshold.

17. The video quality assessment apparatus according to claim 14, wherein the computer processor is configured to execute the instructions to calculate the number of successively lost packets according to the packet information, and update the count value of the number of packet losses according to the number of successively lost packets and a first packet threshold.

18. The video quality assessment apparatus according to claim 14, wherein the second packet threshold is set according to the bit rate or frame rate.

19. The video quality assessment apparatus according to claim 14, wherein the computer processor is configured to execute the instructions to directly determine a preset level to be the final video quality when the number of effective packet loss times of the video data is greater than a preset third threshold.