IMAGE PROCESSING METHOD

• US 20090085933A1
• Filed: 08/08/2008
• Published: 04/02/2009
• Est. Priority Date: 09/30/2007
• Status: Active Grant

• Current Assignee: HTC Corporation
• Original Assignee: HTC Corporation
• Inventors: Li, I-Fang, Chien, Wen-Shu, Hsieh, Wei-Ting, Chen, I-Fei
• Granted Patent: US 8,325,206 B2
• Time in Patent Office: Days
• US Class Current: 345/650
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• CPC Class Codes: G06F 3/04886 by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus

Abstract

An image processing method is provided. The image processing method is used for using a stream of drawing as an input on an image displayed on a display. The image processing method includes steps of identifying the input as a non-closed region input and performing an image rotation operation.

Claims

1. An image processing method for using a stream of drawing as an input on an image displayed by a display, comprising:

identifying the input as a non-closed region input; and

performing an image rotation operation.

2. The image processing method as claimed in claim 1, wherein the stream of drawing comprises an initial point, an end point, and a plurality of drawing connection points between the initial point and the end point.

3. The image processing method as claimed in claim 2, wherein the step of identifying the input as the non-closed region input comprises:

identifying a minimum external border of the stream of drawing according to relative coordinates of the initial point, the end point and the drawing connection points of the stream of drawing on the display;

equally dividing an image region enclosed by the minimum external border into several sub-regions;

identifying a first sub-region and a second sub-region where the initial point and the end point are located respectively, and a plurality of third sub-regions where a portion of the drawing connection points close to the end point are located; and

identifying the input as the non-closed region input when the second sub-region and third sub-regions are not adjacent to the first sub-region respectively.

4. The image processing method as claimed in claim 3, wherein the minimum external border is of a rectangular shape.

5. The image processing method as claimed in claim 3, wherein the sub-regions further comprise at least one center sub-region at a geometric center of the image region.

6. The image processing method as claimed in claim 5, wherein the image rotation operation comprises rotating the image around the geometric center of the image region.

7. The image processing method as claimed in claim 5, wherein the step of identifying the input as the non-closed region input further comprises:

identifying the input as the non-closed region input when the sub-regions where the drawing connection points are distributed do not comprise the center sub-regions.

8. The image processing method as claimed in claim 2, wherein before performing the image rotation operation, the method further comprising identifying a drawing forming direction of the stream of drawing from the initial point through the drawing connection points to the end point.

9. The image processing method as claimed in claim 8, wherein the step of performing the image rotation operation comprises rotating the image by taking the drawing forming direction as a rotation direction.

10. The image processing method as claimed in claim 9, wherein the rotation direction comprises a clockwise direction.

11. The image processing method as claimed in claim 1, wherein the stream of drawing comprises a gesture figure directly formed on the display.

12. The image processing method as claimed in claim 1, wherein the input comprises a drawing initiation action, a drawing connection action, and a drawing ending action.

13. The image processing method as claimed in claim 12, wherein the drawing ending action triggers the image rotation operation.

14. The image processing method as claimed in claim 1, wherein the image rotation operation comprises rotating the image by a predetermined angle.

15. The image processing method as claimed in claim 14, wherein the predetermined angle for rotating the image is about 90 degrees.

16. The image processing method as claimed in claim 1, wherein the image rotation operation comprises rotating the image around the geometric center of the image.

17. An image processing method, useful for using a stream of drawing as an input on an image displayed on a display, wherein the input at least comprises a drawing ending action, the image processing method comprising:

identifying a drawing forming direction of the stream of drawing; and

triggering an image rotation operation by the drawing ending action, and rotating the image by taking the drawing forming direction as a rotation direction.

18. The image processing method as claimed in claim 17, wherein an angle for rotating the image is about 90 degrees.

19. The image processing method as claimed in claim 17, wherein before the step of identifying the drawing forming direction, the method further comprises:

identifying a minimum external border of the stream of drawing according to relative coordinates of a initial point, an end point and a plurality of drawing connection points between the initial point and the end point of the stream of drawing on the display;

equally dividing an image region enclosed by the minimum external border into several sub-regions;

identifying a first sub-region and a second sub-region where the initial point and the end point are located respectively, and a plurality of third sub-regions where a portion of the drawing connection points close to the end point are located; and

identifying the input as the non-closed region input when the second sub-region and third sub-regions are not adjacent to the first sub-region respectively.

20. The image processing method as claimed in claim 19, wherein the minimum external border is of a rectangular shape.

21. The image processing method as claimed in claim 19, wherein the sub-regions further comprise at least one center sub-region at a geometric center of the image region.

22. The image processing method as claimed in claim 21, wherein the step of identifying the input as the non-closed region input further comprises:

identifying the input as the non-closed region input when the sub-regions where the drawing connection points are distributed do not comprise the center sub-regions.

23. The image processing method as claimed in claim 19, wherein the image rotation operation comprises rotating the image around the geometric center of the image region.

24. The image processing method as claimed in claim 17, wherein the image rotation operation comprises rotating the image around the geometric center of the image.

25. The image processing method as claimed in claim 17, wherein the stream of drawing comprises a gesture figure directly formed on the display.

26. The image processing method as claimed in claim 17, wherein the image rotation operation comprises rotating the image by a predetermined angle.

27. The image processing method as claimed in claim 26, wherein a predetermined angle for rotating the image is about 90 degrees.

28. The image processing method as claimed in claim 17, wherein the rotation direction comprises a clockwise direction.