METHOD AND SYSTEM FOR PROVIDING SCENE DATA IN A VIDEO STREAM

• US 20150281749A1
• Filed: 03/12/2014
• Published: 10/01/2015
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: DRS Network & Imaging Systems, LLC (Leonardo S.p.A.)
• Original Assignee: DRS RSTA Incorporated (Leonardo S.p.A.)
• Inventors: Hutchison, David C., Williamson, Ralph K.
• Granted Patent: US 9,628,724 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01J 2005/0077 Imaging
• CPC Class Codes: G01J 5/025 Interfacing a pyrometer to an external device or network; User interface
• CPC Class Codes: G01J 5/0806 Focusing or collimating elements, e.g. lenses or concave mirrors
• CPC Class Codes: G01J 5/10 using electric radiation detectors
• CPC Class Codes: G01J 5/48 Thermography; Techniques using wholly visual means
• CPC Class Codes: G06T 3/40 Scaling of whole images or parts thereof, e.g. expanding or contracting
• CPC Class Codes: G06T 5/00 Image enhancement or restoration
• CPC Class Codes: G06T 5/90 Dynamic range modification of images or parts thereof
• 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 21/23439 for generating different versions
• CPC Class Codes: H04N 21/23605 Creation or processing of packetized elementary streams [PES]
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/4348 Demultiplexing of additional data and video streams
• CPC Class Codes: H04N 5/33 Transforming infrared radiation cameras or camera modules for generating image signals from infrared radiation H04N23/20; circuitry of SSIS for transforming infrared radiation into image signals H04N25/20

Abstract

Methods of and systems for providing temperature data in a video stream are provided. The method includes receiving a video stream having a plurality of video frames with a first frame rate and receiving temperature data having a plurality of temperature frames with a slower second frame rate. To interlace the temperature data, a subset of temperature frames in the plurality of temperature frames can be extracted. The method further includes transmitting each temperature frame in the subset of temperature frames with the plurality of video frames in a data stream. The method may further include identifying missing data in the subset of temperature frames and correlating the missing data with the plurality of video frames. Based on the correlation of the missing data with the plurality of video frames, missing data can be provided to the subset of temperature frames to reconstruct the full plurality of temperature frames.

Claims

1. A method of providing scene data in a video stream, the method comprising:

receiving a video stream having a plurality of video frames characterized by a first frame rate;

receiving a scene data stream having a plurality of scene data frames with a second frame rate, each scene data frame including a plurality of scene data lines;

generating a plurality of reduced scene data frames, wherein each of the plurality of reduced scene data frames is generated by;

(a) extracting a subset of scene data lines from the plurality of scene data lines, wherein the subset is 1/N of the scene data lines;

(b) forming a portion of a reduced scene data frame using the subset of scene data lines; and

(c) iterating (a) and (b) N times; and

transmitting the plurality of video frames at the first frame rate and the plurality of reduced scene data frames at the second frame rate in a data stream.

2. The method of claim 1 wherein the scene data comprises thermal data stream.

3. The method of claim 2 wherein the thermal data stream comprises a temperature map associated with the video stream.

4. The method of claim 1 wherein the scene data comprises sonar data.

5. The method of claim 1 wherein the first frame rate and the second frame rate are a same frame rate.

6. The method of claim 1 wherein the first frame rate ranges from 9 Hz to 30 Hz and the second frame rate ranges from 1 Hz to 120 Hz.

7. The method of claim 1, further comprising:

receiving the data stream;

separating the plurality of video frames from the plurality of reduced scene data frames;

for each reduced scene data frame in the plurality of reduced scene data frames;

identifying one or more missing data lines in the subset of scene data lines, correlating the plurality of reduced scene data frames with the plurality of video frames,

providing the one or more missing data lines to the subset of scene data lines of the reduced scene data frame based on the correlation of the plurality of reduced scene data frames with the plurality of video frames, and

creating a reconstructed scene data frame including the one or more missing data lines and the subset of scene data lines of the reduced scene data frame; and

generating a plurality of reconstructed scene data frames using the reconstructed scene data frame created for each reduced scene data frame; and

transmitting the plurality of reconstructed scene data frames.

8. The method of claim 7, further comprising transmitting the plurality of reconstructed scene data frames with the plurality of video data frames to an external display.

9. The method of claim 7 wherein the second frame rate is lower than the first frame rate.

10. The method of claim 7 wherein the data stream includes a plurality of packets, each packet including one reduced scene data frame in the plurality of reduced scene data frames and a subset of video frames in the plurality of video frames.

11. The method of claim 10 wherein the reduced scene data frame is reduced by a fraction inversely proportional to a number of video frames in the subset of video frames.

12. A system for providing scene data in a video stream, comprising:

a detector configured to receive a video stream having a plurality of video frames with a first frame rate and receive a scene data stream having a plurality of scene data frames with a second frame rate, each scene data frame including a plurality of scene data lines;

a frame processing module configured to, for each scene data frame in the plurality of scene data frames;

extract a subset of scene data lines in the plurality of scene data lines, thereby interlacing the scene data stream,

create a reduced scene data frame including the subset of scene data lines, and

generate a plurality of reduced scene data frames using the reduced scene data frame created for each scene data frame; and

a first transmitter configured to transmit the plurality of reduced scene data frames at the second frame rate with the plurality of video frames at the first frame rate in a data stream.

13. The system of claim 12 wherein the scene data comprises thermal data stream.

14. The system of claim 13 wherein the thermal data stream comprises a temperature map associated with the video stream.

15. The system of claim 12 wherein the scene data comprises sonar data.

16. The system of claim 12, further comprising:

a receiver configured to receive the data stream and separate the plurality of video frames from the plurality of reduced scene data frames;

a frame reconstructing module configured to, for each reduced scene data frame in the plurality of reduced scene data frames;

identify one or more missing data lines in the subset of scene data lines,

correlate the plurality of reduced scene data frames with the plurality of video frames,

provide the one or more missing data lines to the subset of scene data lines of the reduced scene data frame based on the correlation of the plurality of reduced scene data frames with the plurality of video frames,

create a reconstructed scene data frame including the one or more missing data lines and the subset of scene data lines of the reduced scene data frame, and

generate a plurality of reconstructed scene data frames using the reconstructed scene data frame created for each reduced scene data frame; and

a second transmitter configured to transmit the plurality of reconstructed scene data frames.

17. The system of claim 16 wherein the second transmitter transmits the plurality of reconstructed scene data frames with the plurality of video data frames to an external display.

18. The system of claim 16 wherein the second frame rate is lower than the first frame rate.

19. The system of claim 16 wherein the data stream includes a plurality of packets, each packet including one reduced scene data frame in the plurality of reduced scene data frames and a subset of video frames in the plurality of video frames.

20. The method of claim 19 wherein the reduced scene data frame is reduced by a fraction inversely proportional to a number of video frames in the subset of video frames in each packet.