Method and Apparatus for Presenting a Video Screen

• US 20130083078A1
• Filed: 11/27/2012
• Published: 04/04/2013
• Est. Priority Date: 08/24/2010
• Status: Abandoned Application

• Current Assignee: Tencent Technology Shenzhen Company Limited (Tencent Holdings Limited)
• Original Assignee: Tencent Technology Shenzhen Company Limited (Tencent Holdings Limited)
• Inventors: Dai, Qiang, Ma, Huateng, Li, Shiping
• Application Number:
  US13/686,653
• Publication Number:
  US 20130083078A1
• Time in Patent Office: Days
• US Class Current: 345/660
• CPC Class Codes: G06T 3/04 Context-preserving transformations, e.g. by using an importance map panospheric to cylindrical image transformations G06T3/12
• CPC Class Codes: G06T 3/40 Scaling of whole images or parts thereof, e.g. expanding or contracting
• CPC Class Codes: H04N 7/0122 the input and the output signals having different aspect ratios

Abstract

Embodiments provide a method and an apparatus for presenting a video screen, which may identify a black border area in a video displaying interface and zoom an effective video displaying area in an original effective video screen to adjust the black border area intelligently. The black border area may include a black border area from an original video and a black border area of a displaying interface. Thus the effective video displaying area in the video displaying interface can be adjusted, a displaying area in a video screen can be adaptively adjusted, the black border area of the video screen can be eliminated without participation of a user, and diversified demands of users for video screens can be satisfied.

Claims

1. A method for presenting a video screen, comprising:

identifying a black border area in a video displaying interface;

zooming a video screen according to the black border area identified;

displaying the zoomed video screen in the video displaying interface.

2. The method of claim 1, wherein the identifying a black border area in a video displaying interface comprises:

selecting at least two image frames from a video sequence to be played in the video displaying interface, scanning pixels in the at least two image frames, and identifying an area having identical pixels in the at least two image frames as the black border area in the video displaying interface.

3. The method of claim 2, wherein the scanning pixels in the at least two image frames and identifying an area having identical pixels comprise:

segmenting the selected at least two image frames into areas in the same way, scanning pixels in the same area of the at least two image frames, calculating a Hash value of pixels for the area in the at least two image frames, taking pixels having the same Hash value as the identical pixels;

obtaining the height of the identical pixels when the identical pixels are distributed horizontally in the video displaying interface, obtaining the width of the identical pixels when the identical pixels are distributed vertically in the video displaying interface, determining four border areas of the video displaying interface.

4. The method of claim 1, wherein the zooming a video screen according to the black border area identified comprises:

obtaining the size of the video displaying interface;

determining the size of the video screen based on the black border area;

calculating a first ratio of the length of the video displaying interface to the length of an original video screen, calculating a second ratio of the height of the video displaying interface to the height of the video screen;

zooming the video screen by using the first ratio and the second ratio based on a pre-set zooming mode.

5. The method of claim 4, wherein the zooming the video screen by using the first ratio and the second ratio based on a pre-set zooming mode comprises:

selecting the smaller ratio of the first ratio and the second ratio, zooming the length and the height of the video screen according to the smaller ratio.

6. The method of claim 4, wherein the zooming the video screen by using the first ratio and the second ratio based on a pre-set zooming mode comprises:

zooming the length of the video screen according to the first ratio, zooming the height of the video screen according to the second ratio.

7. The method of claim 4, wherein the zooming the video screen by using the first ratio and the second ratio based on a pre-set zooming mode comprises:

selecting a larger ratio of the first ratio and the second ratio, zooming the length and the height of the video screen according to the larger ratio.

8. An apparatus for presenting a video screen, comprising:

an identifying module, configured to identify a black border area in a video displaying interface;

a zooming module, configured to zoom a video screen according to the black border area identified;

a displaying module, configured to display the zoomed video screen in the video displaying interface.

9. The apparatus of claim 8, wherein the identifying module comprises:

a selecting unit, configured to select at least two image frames in a video sequence to be played in the video displaying interface;

a pixel scanning unit, configured to scan pixels in the at least two image frames and providing pixels scanned for a detecting unit;

the detecting unit, is configured to identify an area having identical pixels as the black border area in the video displaying interface.

10. The apparatus of claim 9, wherein the identifying module further comprises an area segmenting unit configured to segment the selected at least two image frames into areas;

wherein the pixel scanning unit is further configured to scan pixels in an area segmented and to calculate a Hash value for the pixels in the area;

the detecting unit is configured to identify an area having identical pixels according to the Hash value.

11. The apparatus of claim 8, wherein the zooming module comprises:

a parameter obtaining unit, configured to obtain the size of the video displaying interface, and to determine the size of the video screen based on the black border area;

a calculating unit, configured to calculate a first ratio of the length of the video displaying interface to the length of an original video screen, to calculate a second ratio of the height of the video displaying interface to the height of the video screen;

a proportional zooming unit, configured to zoom the video screen proportionally by using the first ratio and the second ratio provided by the calculating unit based on a pre-set zooming mode.

12. The apparatus of claim 11, wherein the proportional zooming unit is further configured to obtain a smaller value of the first ratio and the second ratio, to zoom the length and the height of the video screen by using the smaller value as a zooming scale.

13. The apparatus of claim 11, wherein the proportional zooming unit is further configured to zoom the length of the video screen by taking the first ratio as a zooming scale and to zoom the height of the video screen by taking the second ratio as a zooming scale.

14. The apparatus of claim 11, wherein the proportional zooming unit is further configured to obtain a larger value of the first ratio and the second ratio, to zoom the length and the height of the video screen by using the larger value as a zooming scale.

15. A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more computers, cause the device to:

identify a black border area in a video displaying interface, to zoom a video screen according to the black border area identified, and to display the zoomed video screen in the video displaying interface.

16. The computer readable storage medium of claim 15, comprising instructions that cause the one or more computers to:

select at least two image frames from a video sequence to be played in the video displaying interface, scan pixels in the at least two image frames, and identify an area having identical pixels in the at least two image frames as the black border area in the video displaying interface.

17. The computer readable storage medium of claim 16, comprising instructions that cause the one or more computers to:

segment the selected at least two image frames into areas in the same way, scan pixels in the same area of the at least two image frames, calculate a Hash value of pixels for the area in the at least two image frames, take pixels having the same Hash value as the identical pixels;

obtain the height of the identical pixels when the identical pixels are distributed horizontally in the video displaying interface, obtain the width of the identical pixels when the identical pixels are distributed vertically in the video displaying interface, and determine four border areas of the video displaying interface.

18. The computer readable storage medium of claim 15, comprising instructions that cause the one or more computers to:

obtain the size of the video displaying interface, determine the size of the video screen based on the black border area, calculate a first ratio of the length of the video displaying interface to the length of an original video screen, calculate a second ratio of the height of the video displaying interface to the height of the video screen;

select the smaller ratio of the first ratio and the second ratio, and zoom the length and the height of the video screen according to the smaller ratio.

19. The computer readable storage medium of claim 15, comprising instructions that cause the one or more computers to:

obtain the size of the video displaying interface, determine the size of the video screen based on the black border area, calculate a first ratio of the length of the video displaying interface to the length of an original video screen, calculate a second ratio of the height of the video displaying interface to the height of the video screen;

zoom the length of the video screen according to the first ratio, and zoom the height of the video screen according to the second ratio.

20. The computer readable storage medium of claim 15, comprising instructions that cause the one or more computers to:

obtain the size of the video displaying interface, determine the size of the video screen based on the black border area, calculate a first ratio of the length of the video displaying interface to the length of an original video screen, calculate a second ratio of the height of the video displaying interface to the height of the video screen;

select a larger ratio of the first ratio and the second ratio, and zoom the length and the height of the video screen according to the larger ratio.