Compensating for cognitive load in jumping back

• US 20070180378A1
• Filed: 02/01/2006
• Published: 08/02/2007
• Est. Priority Date: 02/01/2006
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Piersol, Kurt, McCall, Kim
• Granted Patent: US 7,770,128 B2
• Time in Patent Office: Days
• US Class Current: 715/703
• CPC Class Codes: G06F 3/0485 Scrolling or panning
• CPC Class Codes: G06T 11/60 Editing figures and text; Combining figures or text

Abstract

A method and apparatus is disclosed herein for compensating for cognitive load in jumping back. In one embodiment, the method comprises serially displaying a sequence of page images; receiving a user input to stop sequencing through the page images; determining a location of a page image in the sequence of page images representing a point at which the user intended to stop in the sequence of page images but for display speed of the sequence of images and user reaction time in providing an indication of the point at which the user intended to stop, the location being selected based on the image display rate and the reaction time associated with the user; and automatically jumping back to the page image at the location in the sequence of page images.

Claims

1. A method comprising:

serially displaying a sequence of page images;

receiving a user input to stop sequencing through the page images;

determining a location of a page image in the sequence of page images representing a point at which the user intended to stop in the sequence of page images but for display speed of the sequence of images and user reaction time in providing an indication of the point at which the user intended to stop, the location being selected based on the image display rate and the reaction time associated with the user; and

automatically jumping back to the page image at the location in the sequence of page images.

2. The method defined in claim 1 further comprising selecting the reaction time associated with the user from a plurality of available reaction times based on the image display rate.

3. The method defined in claim 2 wherein selecting the reaction time associated with the user from a plurality of available reaction times based on the image display rate comprises:

selecting a first reaction time when the image display rate is at a first rate; and

selecting a second reaction time when the image display rate is at a second rate, the first reaction time being greater than the second reaction time, wherein the first rate is greater than the second rate.

4. The method defined in claim 2 wherein the plurality of reaction times is a set of reaction times for the user.

5. The method defined in claim 4 wherein the plurality of reaction times is set as a result of a calibration process.

6. The method defined in claim 1 wherein the location is selected based on an interestingness measure of a page at the location.

7. The method defined in claim 1 wherein the page images are from a plurality of page images corresponding to an image-based document, the plurality of page images including merged page images and each merged page image having salient content from multiple page images of the image-based document merged into one image.

8. The method defined in claim 1 wherein the plurality of page images includes a first set of merged page images having salient content from a first number of page images of the image-based document merged into one image and a second set of merged page images having. salient content from a second number of page images of the image-based document merged into one image, the first and second numbers being different, and further wherein selecting the page images for display comprises selecting the first set of merged page images if the rate at which the page images are to be display is a first rage and selecting the second set of merged page images if the rate at which the page images are to be display is at a the second rate.

9. The method defined in claim 1 further comprising:

identifying salient content on pages of the image-based document; and

creating the plurality of page images by merging identified salient content of multiple pages of the image based document into single pages.

10. The method defined in claim 9 wherein creating the plurality of pages comprises:

creating a first set of merged pages having salient content from a first number of page images of the image-based document merged into one image;

creating a second set of merged pages having salient content from a second number of page images of the image-based document merged into one image, the second number being twice the first number;

creating a third set of merged pages having salient content from a third number of page images of the image-based document merged into one image, the third number being twice the second number; and

wherein selecting the page images comprises selecting the first, second or third sets based on a speed control input.

11. The method defined in claim 9 wherein identifying the salient content comprises:

computing a histogram of each page of the image-based document; and

finding features based on information from the histogram.

12. The method defined in claim 1 wherein page images are displayed, as a function of an input control, according to a merge level indicative of a number of pages of the image-based document per merged image and a rate indicative of the number of merged page images per second based on the merge level.

13. The method defined in claim 12 wherein the page images are displayed in order forward or backward based on a direction indication.

14. An article of manufacture having one or more recordable media storing instructions thereon which, when executed by a system, causes the system to perform a method comprising:

serially displaying a sequence of page images;

receiving a user input to stop sequencing through the page images;

determining a location of a page image in the sequence of page images representing a point at which the user intended to stop in the sequence of page images but for display speed of the sequence of images and user reaction time in providing an indication of the point at which the user intended to stop, the location being selected based on the image display rate and the reaction time associated with the user; and

automatically jumping back to the page image at the location in the sequence of page images.

15. The article of manufacture defined in claim 14 wherein the method further comprises selecting the reaction time associated with the user from a plurality of available reaction times based on the image display rate.

16. The article of manufacture defined in claim 15 wherein selecting the reaction time associated with the user from a plurality of available reaction times based on the image display rate comprises:

selecting a first reaction time when the image display rate is at a first rate; and

selecting a second reaction time when the image display rate is at a second rate, the first reaction time being greater than the second reaction time, wherein the first rate is greater than the second rate.

17. The article of manufacture defined in claim 15 wherein the plurality of reaction times is a set of reaction times for the user.

18. The article of manufacture defined in claim 17 wherein the plurality of reaction times is set as a result of a calibration process.

19. The article of manufacture defined in claim 14 wherein the location is selected based on an interestingness measure of a page at the location.

20. The article of manufacture defined in claim 14 wherein the page images are from a plurality of page images corresponding to an image-based document, the plurality of page images including merged page images and each merged page image having salient content from multiple page images of the image-based document merged into one image.

21. The article of manufacture defined in claim 14 wherein the plurality of page images includes a first set of merged page images having salient content from a first number of page images of the image-based document merged into one image and a second set of merged page images having salient content from a second number of page images of the image-based document merged into one image, the first and second numbers being different, and further wherein selecting the page images for display comprises selecting the first set of merged page images if the rate at which the page images are to be display is a first rage and selecting the second set of merged page images if the rate at which the page images are to be display is at a the second rate.

22. The article of manufacture defined in claim 14 wherein the method further comprises:

identifying salient content on pages of the image-based document; and

creating the plurality of page images by merging identified salient content of multiple pages of the image based document into single pages.

23. The article of manufacture defined in claim 22 wherein creating the plurality of pages comprises:

creating a first set of merged pages having salient content from a first number of page images of the image-based document merged into one image;

creating a second set of merged pages having salient content from a second number of page images of the image-based document merged into one image, the second number being twice the first number;

creating a third set of merged pages having salient content from a third number of page images of the image-based document merged into one image, the third number being twice the second number; and

wherein selecting the page images comprises selecting the first, second or third sets based on a speed control input.

24. The article of manufacture defined in claim 22 wherein identifying the salient content comprises:

computing a histogram of each page of the image-based document; and

finding features based on information from the histogram.

25. The article of manufacture defined in claim 14 wherein page images are displayed, as a function of an input control, according to a merge level indicative of a number of pages of the image-based document per merged image and a rate indicative of the number of merged page images per second based on the merge level.

26. The article of manufacture defined in claim 25 wherein the page images are displayed in order forward or backward based on a direction indication.