METHOD AND SYSTEM FOR CAPTURING AN IMAGE FROM VIDEO

• US 20090073266A1
• Filed: 09/19/2007
• Published: 03/19/2009
• Est. Priority Date: 09/19/2007
• Status: Active Grant

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Abdellaziz Trimeche, Mejdi Ben, Aaltonen, Antti Tapani
• Granted Patent: US 7,825,963 B2
• Time in Patent Office: Days
• US Class Current: 348/180
• CPC Class Codes: G06T 7/41 based on statistical description of texture
• CPC Class Codes: G11B 27/28 by using information signals recorded by the same method as the main recording G11B27/22 takes precedence
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: H04N 1/00291 with receiver circuitry television receiver circuitry per se H04N5/44
• CPC Class Codes: H04N 1/00294 for printing images at a television receiver
• CPC Class Codes: H04N 17/04 for receivers
• CPC Class Codes: H04N 21/4117 for generating hard copies of the content, e.g. printer, electronic paper interfaces to printers G06F3/12; printing data G06K15/02
• CPC Class Codes: H04N 21/44008 involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59
• CPC Class Codes: H04N 21/47 End-user applications
• CPC Class Codes: H04N 21/485 End-user interface for client configuration
• CPC Class Codes: H04N 21/8549 Creating video summaries, e.g. movie trailer retrieval in video databases by using presentations in form of a video summary G06F16/739
• CPC Class Codes: H04N 23/633 for displaying additional information relating to control or operation of the camera
• CPC Class Codes: H04N 23/64 Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image
• CPC Class Codes: H04N 5/4448 for frame-grabbing
• CPC Class Codes: H04N 5/915 for field- or frame-skip recording or reproducing

Abstract

A method including presenting a video sequence on a display where the video sequence includes video frames, calculating a quality indicator with respect to the video frames and automatically indicating which video frames meet or exceed a predetermined image quality threshold depending on the quality indicator.

Claims

1. A method comprising:

presenting a video sequence on a display where the video sequence includes video frames;

calculating a quality indicator with respect to the video frames; and

automatically indicating which video frames meet or exceed a predetermined image quality threshold depending on the quality indicator.

2. The method of claim 1, further comprising capturing one or more video frames that meet or exceed the predetermined image quality threshold.

3. The method of claim 2, wherein the captured video frames are printed or saved as an image.

4. The method of claim 1, wherein the quality indicator includes a quality indicator for each respective video frame and a temporal quality indicator for the video frames.

5. The method of claim 3, wherein the quality indicator is a mean band pass energy of a respective video frame.

6. The method of claim 3, wherein the temporal quality indicator depends on a mean band pass energy of the video frames.

7. The method of claim 3, wherein the quality indicator further includes a percentage of sharp areas of a respective video frame.

8. (canceled)

9. (canceled)

10. An apparatus comprising:

a processor;

an input device connected to the processor; and

a display connected to the processor;

wherein the processor is configured to;

present a video sequence on the display where the video sequence includes video frames;

calculate a quality indicator with respect to the video frames; and

automatically indicate which video frames meet or exceed a predetermined image quality threshold depending on the quality indicator.

11. The apparatus of claim 10, wherein the processor is further configured to capture one or more video frames that meet or exceed the predetermined image quality threshold.

12. The apparatus of claim 11, wherein the captured video frames are printed or saved as an image.

13. The apparatus of claim 10, wherein the quality indicator includes a quality indicator for each respective video frame and a temporal quality indicator for the video frames.

14. The apparatus of claim 13, wherein the quality indicator is a mean band pass energy of a respective video frame.

15. The apparatus of claim 13, wherein the temporal quality indicator depends on a mean band pass energy of the video frames.

16. The apparatus of claim 13, wherein the processor is further configured to calculate a percentage of sharp areas of a respective video frame, wherein the quality indicator further includes the percentage of sharp areas.

19. The apparatus of claim 10, wherein the apparatus is a mobile communication device.

17. (canceled)

18. (canceled)

20. (canceled)

21. (canceled)

22. A user interface comprising:

a frame selection control module connected to a display, the frame selection control module being configured to determine which frames in a sequence of video frames presented on a display exceed a predetermined image quality threshold value; and

a frame indication module connected to at least one of the frame selection control module and display, the frame indication module being configured to allow viewing and selection of one or more of the frames that exceed the predetermined image quality value for printing.

23. The user interface of claim 22, further comprising a module for changing the image quality threshold value.

24. The user interface of claim 22, wherein the frame indication module is further configured to automatically indicate to a user the frames that exceed the predetermined image quality value.

25. The user interface of claim 24, where the indicator is an image presented on the display along with a corresponding frame.

26. (canceled)

27. (canceled)

28. (canceled)

29. A method for printing video frames comprising:

automatically determining which frames in a sequence of video frames presented on a display exceed a predetermined image quality threshold value;

presenting the frames, along with a corresponding quality indicator, that exceed the predetermined image quality threshold value for selection; and

selecting one or more of the frames that exceed the predetermined image quality threshold value for printing.

30. The method of claim 29, further comprising changing the image quality threshold value.

31. The user interface of claim 29, where the quality indicator is an image presented on the display along with a corresponding frame.

32. (canceled)

33. (canceled)

34. (canceled)

35. A computer program product embodied in a memory of a device comprising:

a computer useable medium having computer readable code means embodied therein for causing a computer to capture one or more video frames from a sequence of video frames, the computer readable code means in the computer program product comprising;

computer readable program code means for causing a computer to present a sequence of video frames on a display;

computer readable program code means for causing a computer to calculate a quality indicator with respect to the sequence of video frames;

computer readable program code means for causing a computer to indicate which video frames meet or exceed a predetermined image quality threshold depending on the quality indicator; and

computer readable program code means for causing a computer to capture one or more video frames that meet or exceed the predetermined image quality threshold.

36. The computer program product of claim 35, wherein the quality indicator includes a quality indicator for each respective video frame and a temporal quality indicator for the video frames.

37. The computer program product of claim 36, further comprising computer readable program code means for causing a computer to calculate a percentage of sharp areas of a respective video frame, wherein the quality indicator further includes the percentage of sharp areas.

38. (canceled)

39. (canceled)