Method, article, apparatus and computer system for inputting a graphical object

• US 20090138830A1
• Filed: 06/20/2005
• Published: 05/28/2009
• Est. Priority Date: 06/20/2005
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Dey, Prasenjit, Borgaonkar, Shekhar Ramachandra, Anant, Prashanth
• Granted Patent: US 8,161,415 B2
• Time in Patent Office: Days
• US Class Current: 715/863
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

Method, article, apparatus and computer system facilitating the easy and intuitive inputting of a desired graphical object into an electronic system from a large plurality of predetermined graphical objects. In one example embodiment, this is achieved by assigning each of said graphical objects into one of a plurality of groups in accordance with a predetermined similarity criterion, associating respective base shapes to each of said groups, wherein said base shapes having a certain degree of similarity to the objects assigned to the associated group according to said similarity criterion and associating in each of said groups at least one gesture to each of said graphical objects, so that the associated gestures are distinguishable from each other. In order to input the desired graphical object, one of the groups is selected by selecting its base shape and then the desired graphical object is identified by drawing the respective gesture associated thereto.

Claims

1. A method for inputting a desired graphical object from a large plurality of predetermined graphical objects, comprising the steps of:

(i) preparing said graphical objects for gesture-selection, wherein said preparation comprises the steps of;

(a) assigning each of said graphical objects into one of a plurality of groups in accordance with a predetermined similarity criterion, wherein the number of said groups is much less than the number of said graphical objects;

(b) associating respective base shapes to each of said groups, wherein said base shapes have a certain degree of similarity to the objects assigned to the associated group according to said similarity criterion;

(c) associating in each of said groups at least one gesture to each of said graphical objects, so that within any group the associated gestures are distinguishable from each other;

(d) electronically storing said assignments of said graphical objects to said groups and for each group said association of said objects to said gestures;

(ii) selecting said desired graphical object comprising the steps of;

(e) selecting a base shape from the plurality of base shapes and defining thereby the group to which said desired graphical object is assigned;

(f) drawing a gesture on a digitizing tablet similar to the gesture associated with said desired graphical object;

(g) electronically recognizing which of said stored gestures belonging to the defined group is most similar to said drawn gesture;

(h) identifying the desired graphical object associated with said recognized gesture; and

(j) generating the identified graphical object in electronic form.

2. The method as claimed in claim 1, further comprising the step of outputting said generated graphical object to an electronic system for processing.

3. The method as claimed in claim 1, wherein each graphical object in any given group is more similar to the base shape of that group than to the base shape of any other group.

4. The method as claimed in claim 1, wherein the graphical objects in any given group are more similar to each other than to any graphical objects of any other group.

5. The method as claimed in claim 1, wherein said at least one gesture associated with the graphical objects is similar to the respective graphical object or a feature thereof.

6. The method as claimed in claim 1, further comprising the step of assigning respective regions of an active region of the digitizing tablet to said base shapes and said base shape selection step (e) further comprising activating said assigned region of the active surface of the digitizing tablet.

7. The method as claimed in claim 1, further comprising:

extracting a predefined parameter of said drawn gesture in said recognizing step (g); and

generating said graphical object in accordance with said extracted parameter in said step (j).

8. The method as claimed in claim 7, wherein said predefined parameter is selected from the group comprising size, orientation and direction.

9. The method as claimed in claim 1, further comprising repeating steps (e) to (j) to input a further graphical object.

10. An article comprising:

a storage medium having instructions that, when executed by a computing platform, result in execution of a method for inputting a desired graphical object from a large plurality of predetermined graphical objects, wherein

each of said graphical objects is assigned into one of a plurality of groups in accordance with a predetermined similarity criterion, wherein the number of said groups is much less than the number of said graphical objects;

respective base shapes are associated to each of said groups, wherein said base shapes have a certain degree of similarity to the objects assigned to the associated group according to said similarity criterion;

in each of said groups at least one gesture is associated to each of said graphical objects, so that within any group the associated gestures are distinguishable from each other;

said assignments of said graphical objects to said groups and for each group said association of said objects to said gestures is being stored;

wherein said method comprises the steps of;

(a) receiving a selection of a base shape from the plurality of base shapes and defining thereby the group to which said desired graphical object is assigned;

(b) receiving a gesture drawn via a digitizing tablet;

(c) electronically recognizing which of said stored gestures belonging to the defined group is most similar to said drawn gesture;

(d) identifying the desired graphical object associated with said recognized gesture; and

(e) generating the identified graphical object in electronic form.

11. The article as claimed in claim 10, wherein said storage medium having further instructions that, when executed by said computing platform, result in outputting said generated graphical object to an electronic system for processing.

12. The article as claimed in claim 10, wherein each graphical object in any given group is more similar to the base shape of that group than to the base shape of any other group.

13. The article as claimed in claim 10, wherein the graphical objects in any given group are more similar to each other than to any graphical objects of any other group.

14. The article as claimed in claim 10, wherein said at least one gesture associated with the graphical objects are similar to the respective graphical object or a feature thereof.

15. The article as claimed in claim 10, wherein said storage medium having further instructions that, when executed by said computing platform, result in:

extracting a predefined parameter of said drawn gesture in said recognizing step (c); and

generating said graphical object in accordance with said extracted parameter in said step (e).

16. The article as claimed in claim 15, wherein said extracted parameter is selected from the group comprising size, orientation and direction.

17. The article as claimed in claim 10, wherein said storage medium having further instructions that, when executed by said computing platform, result in repeating steps (a) to (e) to input a further graphical object.

18. An apparatus for inputting a desired graphical object from a large plurality of predetermined graphical objects, wherein

each of said graphical objects is assigned into one of a plurality of groups in accordance with a predetermined similarity criterion, wherein the number of said groups is much less than the number of said graphical objects;

respective base shapes are associated to each of said groups, wherein said base shapes have a certain degree of similarity to the objects assigned to the associated group according to said similarity criterion;

in each of said groups at least one gesture is associated to each of said graphical objects, so that within any group the associated gestures are distinguishable from each other;

said assignments of said graphical objects to said groups and for each group said association of said objects to said gestures is being electronically stored;

the apparatus comprising;

a digitizing tablet for receiving a selection of a base shape from the plurality of base shapes and defining thereby the group to which said desired graphical object is assigned and receiving a gesture drawn thereon;

a gesture-keyboard-engine coupled to the digitizing tablet for receiving digital data associated with said defined group and with the gesture from the digitizing tablet, electronically recognizing which of said stored gestures belonging to the defined group is most similar to said drawn gesture, identifying the desired graphical object associated with said recognized gesture and generating the identified graphical object in electronic form; and

a display device coupled to the gesture-keyboard-engine for displaying the generated graphical object.

19. The apparatus as claimed in claim 18, wherein respective regions of an active region of the digitizing tablet are assigned to said base shapes and said base shape selection further comprises activating said assigned region of the active surface of the digitizing tablet.

20. The apparatus as claimed in claim 19, wherein the assigned base shapes are displayed within the respective region of the active surface of the digitizing tablet.

21. The apparatus as claimed in claim 19, wherein said activation further comprises tapping within the respective region of the active surface of the digitizing tablet.

22. The apparatus as claimed in claim 19, wherein said activation step further comprises starting the drawing of the gesture within the respective region of the active surface of the digitizing tablet.

23. The apparatus as claimed in claim 18, wherein said gesture drawn comprises more than one strokes, and after receiving the selection of a base shape the digitizing tablet

(a) receives a stroke;

(b) waits for a next stroke for a predetermined time interval;

(c) repeats steps (a) and (b) if there is a next stroke to be received within said predetermined time interval;

(d) terminates the gesture-reception if no further stroke is made within said predetermined time interval.

24. The apparatus as claimed in claim 18, wherein the display device displays the gesture for the time while it is being drawn.

25. The apparatus as claimed in claim 18, wherein the display device is selected from the group comprising a computer monitor, a screen of a television set, a liquid crystal display, a plasma display, a touch screen and the displays of a PDA device, a tablet PC, and other mobile computing and telecommunication devices.

26. The apparatus as claimed in claim 25, wherein the digitizing tablet comprises a touch sensitive surface and a stylus.

27. The apparatus as claimed in claim 26, wherein the touch sensitive surface is selected from the group comprising the active surfaces of an electronic tablet, a PDA device, a tablet PC and a touch screen.

28. A computer system for inputting a desired graphical object from a large plurality of predetermined graphical objects, wherein

each of said graphical objects is assigned into one of a plurality of groups in accordance with a predetermined similarity criterion, wherein the number of said groups is much less than the number of said graphical objects;

respective base shapes are associated to each of said groups, wherein said base shapes have a certain degree of similarity to the objects assigned to the associated group according to said similarity criterion;

in each of said groups at least one gesture is associated to each of said graphical objects, so that within any group the associated gestures are distinguishable from each other;

said assignments of said graphical objects to said groups and for each group said association of said objects to said gestures is being electronically stored;

the computer system comprising;

a processing unit;

a memory coupled to the processing unit;

an I/O interface;

a digitizing tablet for receiving a selection of a base shape from the plurality of base shapes and defining thereby the group to which said desired graphical object is assigned and receiving a gesture drawn thereon;

a gesture-keyboard-engine coupled to the digitizing tablet for receiving digital data associated with said defined group and with the gesture from the digitizing tablet, electronically recognizing which of said stored gestures belonging to the defined group is most similar to said drawn gesture, identifying the desired graphical object associated with said recognized gesture and generating the identified graphical object in electronic form; and

a display device coupled to the gesture-keyboard-engine for displaying the generated graphical object.

29. The computer system as claimed in claim 28, wherein respective regions of an active region of the digitizing tablet are assigned to said base shapes and said base shape selection is carried out by activating said assigned region of the active surface of the digitizing tablet.

30. The computer system as claimed in claim 29, wherein the assigned base shapes are displayed within the respective region of the active surface of the digitizing tablet.

31. The computer system as claimed in claim 29, wherein said activation is carried out by tapping within the respective region of the active surface of the digitizing tablet.

32. The computer system as claimed in claim 29, wherein said activation step is carried out by starting the drawing of the gesture within the respective region of the active surface of the digitizing tablet.

33. The computer system as claimed in claim 28, wherein the display device is selected from the group comprising a computer monitor, a screen of a television set, a liquid crystal display, a plasma display, a touch screen and the displays of a PDA device, a tablet PC, and other mobile computing and telecommunication devices.

34. The computer system as claimed in claim 33, wherein the digitizing tablet comprises a touch sensitive surface and a stylus.

35. The computer system as claimed in claim 34, wherein the touch sensitive surface is selected from the group comprising the active surfaces of an electronic tablet, a PDA device, a tablet PC and a touch screen.