METHOD FOR ZOOMING IMAGE AND ELECTRONIC DEVICE USING THE SAME

• US 20100031188A1
• Filed: 03/17/2009
• Published: 02/04/2010
• Est. Priority Date: 08/01/2008
• Status: Abandoned Application

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: Liu, Po-Hsien
• Application Number:
  US12/406,085
• Publication Number:
  US 20100031188A1
• Time in Patent Office: Days
• US Class Current: 715/801
• CPC Class Codes: G06F 2203/04806 Zoom, i.e. interaction techniques or interactors for controlling the zooming operation
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• CPC Class Codes: H04N 23/62 Control of parameters via user interfaces
• CPC Class Codes: H04N 23/63 by using electronic viewfinders
• CPC Class Codes: H04N 23/69 Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming

Abstract

A method for zooming images may include the following steps: a closed line is traced on a touch panel and a tracing direction of the closed line is determined. An area enclosed by the closed line is then determined. A zooming ratio is computed according to the area. The image is zoomed according to the tracing direction and the zooming ratio. An electronic device using the method is also described.

Claims

1. A method for zooming an image comprising:

tracing a closed line over an image displayed on a touch panel;

determining a tracing direction of the closed line; and

zooming the image according to the tracing direction.

2. The method according to claim 1, wherein the step of zooming the image according to the tracing direction comprises:

zooming in the image if the tracing direction of the closed line is determined to be a first direction.

3. The method according to claim 2, further comprising:

zooming out the image if the tracing direction of the closed line is determined not to be the first direction.

4. The method according to claim 1, further comprising:

determining a zooming ratio according to a characteristic of the closed line; and

zooming the image according to the zooming ratio.

5. The method according to claim 4, wherein the step of determining a zooming ratio according to the characteristic of the closed line comprises:

determining the area enclosed by the closed line; and

determining a zooming ratio according to the size of the determined area.

6. The method according to claim 4, wherein the step of determining a zooming ratio according to the characteristic of the closed line comprises:

determining the perimeter of the closed line; and

determining a zooming ratio according to the determined perimeter.

7. The method according to claim 1, wherein the closed line is composed of touch points, and the closed line is determined when coordinates of a current tracing point are substantially identical to an original touch point.

8. A method for zooming an image comprising:

tracing a closed line over an image displayed on a touch panel;

determining a zooming ratio according to a characteristic of the closed line; and

zooming the image according to the zooming ratio.

9. The method according to claim 8, wherein the step of determining a zooming ratio according to the characteristic of the closed line comprises:

determining the area enclosed by the closed line; and

determining a zooming ratio according to the size of the determined area.

10. The method according to claim 8, wherein the step of determining a zooming ratio according to the characteristic of the closed line comprises:

determining the perimeter of the closed line; and

determining a zooming ratio according to the determined perimeter.

11. The method according to claim 8, further comprising:

determining a tracing direction of the closed line; and

zooming the image according to the tracing direction.

12. The method according to claim 11, wherein the step of zooming the image according to the tracing direction comprises:

zooming in the image if the tracing direction of the closed line is determined to be a first direction.

13. The method according to claim 12, further comprising:

zooming out the image if the tracing direction of the closed line is determined not to be the first direction.

14. An electronic device comprising:

a touch panel for receiving touch points;

a display module for displaying an image;

a detecting module for determining the formation of a closed line traced on the touch panel;

a computing module for computing a tracing direction of the closed line; and

a processing module for zooming the image according to the tracing direction and outputting the zoomed image to the display module.

15. The electronic device according to claim 14, wherein the processing module zooms in the image when the tracing direction of the closed line is a first direction.

16. The electronic device according to claim 15, wherein the processing module zooms out the image when the tracing direction of the closed line is not the first direction.

17. The electronic device according to claim 14, wherein the computing module computes a zooming ratio according to a characteristic of the closed line;

the processing module also zooms the image according to the zooming ratio and outputs the zoomed image to the display module.

18. The electronic device according to claim 17, wherein the computing module computes the size of an area enclosed by the closed line, and the zooming ratio is based upon the size of the area.

19. The electronic device according to claim 17, wherein the computing module computes a perimeter of the closed line, and the zooming ratio is based on the perimeter.

20. The electronic device according to claim 14, wherein the closed line is composed of touch points;

the detecting module detects coordinates of touch points when traced on the touch panel and determines the formation of a closed line when coordinates of a current tracing point are substantially identical to the coordinates of an original point traced on the touch panel.