SCALING AN IMAGE HAVING TEXT

• US 20140267438A1
• Filed: 03/13/2013
• Published: 09/18/2014
• Est. Priority Date: 03/13/2013
• Status: Abandoned Application

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: SOSINSKI, Joseph W.
• Application Number:
  US13/802,126
• Publication Number:
  US 20140267438A1
• Time in Patent Office: Days
• US Class Current: 345/666
• CPC Class Codes: G06T 3/4092 Image resolution transcoding, e.g. by using client-server architectures

Abstract

Methods of scaling an image having text are provided. An image having text may be obtained. A size of the text in the image may be obtained. In some examples, optical character recognition (OCR) and/or related techniques may be used to determine a font size or an average character height. A proper scaling factor may be determined based on the size of the text, and the image can be displayed scaled such that the text may be large enough to be legible.

Claims

1. A method of a computing device including a display, the method comprising:

obtaining an image having text;

obtaining a size of the text;

determining a scaling factor based on the size of the text; and

displaying the image scaled based on the scaling factor.

2. The method of claim 1, further comprising:

displaying a first portion of the image;

wherein the text is located within a second portion of the image, obtaining the size of the text occurs while the first portion of the image is displayed, and displaying the image scaled based on the scaling factor includes displaying the second portion of the image scaled based on the scaling factor.

3. The method of claim 1, wherein obtaining the size of the text includes processing at least a portion of the image to determine an average character height of the text.

4. The method of claim 3, wherein processing at least a portion of the image includes applying optical character recognition to at least a portion of the image.

5. The method of claim 1, further comprising:

selecting a portion of the image based on user input;

wherein some or all of the text is located within the selected portion of the image, and displaying the image scaled based on the scaling factor includes displaying the portion of the image scaled based on the scaling factor.

6. The method of claim 5, wherein selecting a portion of the image based on user input includes selecting a scaling focus based on user input, and the portion of the image includes the scaling focus.

7. The method of claim 1, wherein obtaining the size of the text includes determining two sizes of the text and selecting the smaller of the two sizes, and determining the scaling factor is based on the smaller of the two sizes.

8. The method of claim 1, wherein obtaining the image having text includes obtaining the image as part of a web page.

9. The method of claim 1, wherein the image comprises a visual representation of the text without storing the text in a character-encoding scheme.

10. The method of claim 1, wherein determining the scaling factor is further based on a desired text size.

11. The method of claim 10, wherein the desired text size is determined based on one or more properties of the display.

12. The method of claim 10, wherein the desired text size is determined based on a legibility factor set by user input.

13. An electronic device, comprising:

a processor to execute instructions;

a display; and

a memory coupled with the processor to store instructions, which when executed by the processor, cause the processor to perform operations to generate an application programming interface (API) that allows an API-calling component to perform the following operations;

obtaining an image having text;

obtaining a size of the text;

determining a scaling factor based on the size of the text; and

displaying the image scaled based on the scaling factor.

14. The electronic device of claim 13, the operations further comprising:

displaying a first portion of the image;

wherein the text is located within a second portion of the image, obtaining the size of the text occurs while the first portion of the image is displayed, and displaying the image scaled based on the scaling factor includes displaying the second portion of the image scaled based on the scaling factor.

15. The electronic device of claim 13, wherein obtaining the size of the text includes processing at least a portion of the image to determine an average character height of the text.

16. The electronic device of claim 15, wherein processing at least a portion of the image includes applying optical character recognition to at least a portion of the image.

17. The electronic device of claim 13, the operations further comprising:

selecting a portion of the image based on user input;

wherein some or all of the text is located within the selected portion of the image, and displaying the image scaled based on the scaling factor includes displaying the portion of the image scaled based on the scaling factor.

18. The electronic device of claim 17, wherein selecting a portion of the image based on user input includes selecting a scaling focus based on user input, and the portion of the image includes the scaling focus.

19. The electronic device of claim 13, wherein obtaining the size of the text includes determining two sizes of the text and selecting the smaller of the two sizes, and determining the scaling factor is based on the smaller of the two sizes.

20. The electronic device of claim 13, wherein obtaining the image having text includes obtaining the image as part of a web page.

21. The electronic device of claim 13, wherein the image comprises a visual representation of the text without storing the text in a character-encoding scheme.

22. The electronic device of claim 13, wherein determining the scaling factor is further based on a desired text size.

23. The electronic device of claim 22, wherein the desired text size is determined based on one or more properties of the display.

24. The electronic device of claim 22, wherein the desired text size is determined based on a legibility factor set by user input.