Mobile terminal-based photograph deletion method and mobile terminal

• US 9,965,154 B2
• Filed: 07/29/2013
• Issued: 05/08/2018
• Est. Priority Date: 10/24/2012
• Status: Active Grant

• Current Assignee: Huizhou TCL Mobile Communication Company Limited (TCL Technology Group Corp.)
• Original Assignee: Huizhou TCL Mobile Communication Company Limited (TCL Technology Group Corp.)
• Inventors: Lei, Ming
• Primary Examiner(s): LEE, TING ZHOU
• Application Number:
  US14/395,963
• Publication Number:
  US 20150339035A1
• Time in Patent Office: 1,744 Days
• CPC Class Codes: G06F 16/162 Delete operations erasing in storage systems G06F3/0652
• CPC Class Codes: G06F 16/172 Caching, prefetching or hoarding of files
• CPC Class Codes: G06F 3/017 Gesture based interaction, e.g. based on a set of recognized hand gestures interaction based on gestures traced on a digitiser G06F3/04883
• CPC Class Codes: G06F 3/048 Interaction techniques based on graphical user interfaces [GUI]
• CPC Class Codes: G06F 3/04842 Selection of displayed objects or displayed text elements G06F3/0482 takes precedence
• CPC Class Codes: G06F 3/04845 for image manipulation, e.g. dragging, rotation, expansion or change of colour
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

A mobile terminal and a photograph deletion method thereof are disclosed. The method comprises: pre-storing in the mobile terminal a preset touch gesture used for deleting a picture from a photography interface during photography, and mapping the preset touch gesture to a deletion command; receiving a user'"'"'s touchscreen command to determine whether the user'"'"'s touch gesture matches the preset touch gesture when the photography interface of the mobile terminal requires deletion of a picture; if yes, determining a deletion target according to action points of the touch gesture; and moving deletion target into a recycling bin. The captured picture is rapidly deleted from the photography interface through a simple touchscreen gesture without exiting the camera application program and with no need to manually switch an operation interface.

Claims

1. A mobile terminal-based photograph deletion method, comprising steps of:

mapping a preset touch gesture on a touchscreen of a mobile terminal to a deletion command;

receiving a touch gesture on an area of thumbnail view of pictures on a photography interface of the touchscreen, in which the photography interface is used to take a picture, and determining whether the touch gesture indicates a click command when the mobile terminal is used to take a photograph;

determining whether the touch gesture matches the preset touch gesture when the touch gesture is determined not to indicate the click command;

determining a target picture according to action points of the touch gesture made on the thumbnail view area of the photography interface when the touch gesture matches the preset touch gesture; and

moving the target picture to a recycle bin,

wherein the preset touch gesture is an X-shaped gesture on the touchscreen of the mobile terminal;

wherein the step of determining whether the touch gesture matches the preset touch gesture comprises;

determining whether the touch gesture satisfies all of the following conditions;

(A) two lines drawn by the touch gesture are approximate to straight lines;

(B) the two lines drawn by the touch gesture have only one intersection point and the intersection point is at a middle part of three equal parts of the two lines; and

(C) an angle between the two lines ranges from 45 to 135 degrees;

determining that the touch gesture matches the X-shaped gesture when all three of the conditions (A), (B), and (C) are satisfied, and determining that the touch gesture does not match the X-shaped gesture when any one of the three conditions (A), (B), and (C) is not satisfied;

wherein in Condition (A), whether lines drawn by the user are two lines approximate to straight lines is determined by determining whether the straightness of the lines drawn by the user meets the requirement, the straightness is defined by the maximum of a ratio of the sum of the distance between a point of a line and a start point of the line and the distance between said point and an end point of the line to the distance between the start point and the end point;

wherein determining whether the straightness of the lines drawn by the user meets the requirement comprises steps of;

Step 0;

defining a criteria for the straightness;

Step 1;

calculating the distance between the start point and the end point respectively for the two lines;

Step 2;

calculating the sum of the distance between a point and the start point on a corresponding line and the distance between said point and the end point on the corresponding line respectively for the respective points on the two lines;

Step 3;

comparing the distance sum calculated in Step 2 and the distance calculated for the corresponding line in Step 1, and finding out the maximum of its ratio;

wherein if the maximum ratio in Step 3 is larger than the straightness criteria, it shows that the corresponding line is not approximate to a straight line, and the corresponding line is determined not to meet the requirement.

2. The mobile terminal-based photograph deletion method according to claim 1, wherein the target picture comprises a picture or a short film.

3. The mobile terminal-based photograph deletion method according to claim 1, further comprising a step of receiving a target retrieving command by the mobile terminal for recovering the target picture from the recycle bin to a location where the target picture was before the target picture was moved to the recycle bin or a specified location after the step of moving the target picture to the recycle bin.

4. The mobile terminal-based photograph deletion method according to claim 1, wherein the recycle bin caches a preset number of the target pictures in chronological order.

5. The mobile terminal-based photograph deletion method according to claim 4, wherein the step of moving the target picture to the recycle bin comprises:

when the number of the cached target pictures in the recycle bin has reached the preset number, deleting a foremost cached target picture from the recycle bin and then moving the target picture to the recycle bin.

6. A mobile terminal-based photograph deletion method, comprising steps of:

mapping a preset touch gesture on a touchscreen of a mobile terminal to a deletion command;

receiving a touch gesture on an area of thumbnail view of pictures on a photography interface of the touchscreen, in which the photography interface is used to take a picture, and determining whether the touch gesture matches the preset touch gesture when the mobile terminal is used to take a photograph;

determining a target picture according to action points of the touch gesture made on the thumbnail view area of the photography interface when the touch gesture matches the preset touch gesture; and

moving the target picture to a recycle bin,

wherein the preset touch gesture is an X-shaped gesture on the touchscreen of the mobile terminal;

wherein the step of determining whether the touch gesture matches the preset touch gesture comprises;

determining whether the touch gesture satisfies all of the following conditions;

(A) two lines drawn by the touch gesture are approximate to straight lines;

(B) the two lines drawn by the touch gesture have only one intersection point and the intersection point is at a middle part of three equal parts of the two lines; and

(C) an angle between the two lines ranges from 45 to 135 degrees;

determining that the touch gesture matches the X-shaped gesture when all three of the conditions (A), (B), and (C) are satisfied, and determining that the touch gesture does not match the X-shaped gesture when any one of the three conditions (A), (B), and (C) is not satisfied;

wherein in Condition (A), whether lines drawn by the user are two lines approximate to straight lines is determined by determining whether the straightness of the lines drawn by the user meets the requirement, the straightness is defined by the maximum of a ratio of the sum of the distance between a point of a line and a start point of the line and the distance between said point and an end point of the line to the distance between the start point and the end point;

wherein determining whether the straightness of the lines drawn by the user meets the requirement comprises steps of;

Step 0;

defining a criteria for the straightness;

Step 1;

calculating the distance between the start point and the end point respectively for the two lines;

Step 2;

calculating the sum of the distance between a point and the start point on a corresponding line and the distance between said point and the end point on the corresponding line respectively for the respective points on the two lines;

Step 3;

comparing the distance sum calculated in Step 2 and the distance calculated for the corresponding line in Step 1, and finding out the maximum of its ratio;

wherein if the maximum ratio in Step 3 is larger than the straightness criteria, it shows that the corresponding line is not approximate to a straight line, and the corresponding line is determined not to meet the requirement.

7. The mobile terminal-based photograph deletion method according to claim 6, wherein the target picture comprises a picture or a short film.

8. The mobile terminal-based photograph deletion method according to claim 6, further comprising a step of receiving a target retrieving command by the mobile terminal for recovering the target picture from the recycle bin to a location where the target picture was before the target picture was moved to the recycle bin or a specified location after the step of moving the target picture to the recycle bin.

9. The mobile terminal-based photograph deletion method according to claim 6, wherein the recycle bin caches a preset number of the target pictures in chronological order.

10. The mobile terminal-based photograph deletion method according to claim 9, wherein the step of moving the target picture to the recycle bin comprises:

when the number of the cached target pictures in the recycle bin has reached the preset number, deleting a foremost cached target picture from the recycle bin and then moving the target picture to the recycle bin.

11. A mobile terminal, comprising:

a processor; and

a memory connected with processor, the memory comprising a plurality of program instructions executable by the processor, the plurality of program instructions comprising;

establishing a correspondence between a preset touch gesture on a touch screen of a mobile terminal and a deletion command;

receiving a touch gesture on an area of thumbnail view of pictures on a photography interface of the touchscreen, in which the photography interface is used to take a picture, and determining whether the touch gesture matches the preset touch gesture when the mobile terminal is used to take a photograph;

if yes, outputting a target determination signal;

receiving the target determination signal, and in responsive to the target determination signal, determining a target picture according to action points of the touch gesture made on the thumbnail view area of the photography interface; and

moving the target picture to a recycle bin when the touch gesture matches the preset touch gesture,

wherein the preset touch gesture is an X-shaped gesture on the touchscreen of the mobile terminal;

wherein determining whether the touch gesture matches the reset touch gesture comprises;

determining whether the touch gesture satisfies all of the following conditions;

(A) two lines drawn by the touch gesture are approximate to straight lines;

(B) the two lines drawn by the touch gesture have only one intersection point and the intersection point is at a middle part of three equal parts of the two lines; and

(C) an angle between the two lines ranges from 45 to 135 degrees;

determining that the touch gesture matches the X-shaped gesture when all three of the conditions (A), (B), and (C) are satisfied, and determining that the touch gesture does not match the X-shaped gesture when any one of the three conditions (A), (B), and (C) is not satisfied;

wherein in Condition (A), whether lines drawn by the user are two lines approximate to straight lines is determined by determining whether the straightness of the lines drawn by the user meets the requirement, the straightness is defined by the maximum of a ratio of the sum of the distance between a point of a line and a start point of the line and the distance between said point and an end point of the line to the distance between the start point and the end point;

wherein determining whether the straightness of the lines drawn by the user meets the requirement comprises steps of;

Step 0;

defining a criteria for the straightness;

Step 1;

calculating the distance between the start point and the end point respectively for the two lines;

Step 2;

calculating the sum of the distance between a point and the start point on a corresponding line and the distance between said point and the end point on the corresponding line respectively for the respective points on the two lines;

Step 3;

comparing the distance sum calculated in Step 2 and the distance calculated for the corresponding line in Step 1, and finding out the maximum of its ratio;

wherein if the maximum ratio in Step 3 is larger than the straightness criteria, it shows that the corresponding line is not approximate to a straight line, and the corresponding line is determined not to meet the requirement.

12. The mobile terminal according to claim 11, wherein the target picture comprises a picture or a short film.

13. The mobile terminal according to claim 11, wherein the plurality of program instructions further comprises:

receiving a target retrieving command and recovering the target picture from the recycle bin to a location where the target picture was before the target picture was moved to the recycle bin or a specified location; and

presetting the recycle bin used to cache a preset number of target pictures in chronological order.

14. The mobile terminal according to claim 13, wherein the preset number is 10.