Mobile terminal for providing partial attribute changes of camera preview image and method for controlling the same

• US 10,021,294 B2
• Filed: 09/07/2016
• Issued: 07/10/2018
• Est. Priority Date: 09/08/2015
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kwon, Yunmi, Kang, Kyunghee, Lee, Kiseon
• Primary Examiner(s): VU, NGOC YEN T
• Application Number:
  US15/258,853
• Publication Number:
  US 20170070670A1
• Time in Patent Office: 671 Days
• Field of Search: 3482221, 34833301-33303, 34833305, 34833311-33312
• 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: G06T 7/246 using feature-based methods, e.g. the tracking of corners or segments
• CPC Class Codes: H04N 1/00411 the display also being used for user input, e.g. touch screen
• CPC Class Codes: H04N 23/62 Control of parameters via user interfaces
• CPC Class Codes: H04N 23/632 for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
• CPC Class Codes: H04N 23/64 Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image

Abstract

A mobile terminal and a method for controlling the mobile terminal are disclosed. A mobile terminal according to the present invention comprises a camera; touch screen; and a controller displaying a first preview image obtained from the camera on the touch screen, if receiving a touch input selecting one area of the first preview image, displaying at least one recommended image with respect to the selected area having image attributes different from those of the selected area on one area of the touch screen, and if receiving an input selecting one of the displayed recommended images, displaying on the touch screen a second preview image reflecting the selected recommended image on the selected area. According to the present invention, since a recommended image is provided for a selected area from among preview images displayed on a touch screen, image attributes of the selected area can be changed easily.

Claims

1. A mobile terminal, comprising:

a camera;

a touch screen;

a memory that stores a range of reference values for each of a plurality of image attributes; and

a controller configured to;

control the touch screen to display a first preview image obtained from the camera,

receive a first touch input selecting an area of the first preview image,

extract a value for each of the plurality of image attributes from the selected area,

determine at least one image attribute having an extracted value that is not within the range of reference values among the plurality of image attributes,

generate at least one recommended image that is compensated to have value of the image attribute within the corresponding range of reference values for the determined at least one image attribute, the at least one recommended image corresponding to the selected area,

control the touch screen to display on an area of the touch screen, the at least one recommended image, the at least one recommended image having image attributes, at least one of which has a value that differs from that of the selected area, and

control the touch screen to display a second preview image, in response to receiving a second touch input selecting one of the at least one displayed recommended images, the second preview image reflecting the selected recommended image on the selected area.

2. The mobile terminal of claim 1, wherein the controller determines the selected area so that it incorporates an object displayed in the first preview image to which the first touch input is applied.

3. The mobile terminal of claim 2, wherein the first touch input is a dragging input.

4. The mobile terminal of claim 2, wherein the controller maintains the selected area when the first preview image changes due to movement of the mobile terminal.

5. The mobile terminal of claim 2, wherein the controller maintains the selected area when movement of the object within the first preview image is detected.

6. The mobile terminal of claim 1, wherein the controller further controls the touch screen to display a boundary of the selected area.

7. The mobile terminal of claim 1, wherein the image attributes include one or more of brightness, saturation, color, hue, contrast and sharpness.

8. The mobile terminal of claim 1, wherein the memory stores a plurality of images captured through the camera, and wherein the controller determines the range of reference values for each of the plurality of image attributes based on a value extracted from the plurality of images for each of the plurality of image attributes.

9. The mobile terminal of claim 1, further comprising a wireless communication unit,

wherein the controller receives a plurality of images through the wireless communication unit and determines the range of reference values for each of the plurality of image attributes based on a value extracted from the plurality of images for each of the plurality of image attributes.

10. The mobile terminal of claim 1, wherein when the controller controls the touch screen to display more than one recommended image, each of the recommended images has a different value with respect to at least one image attribute compared to each of the other one or more recommended images.

11. The mobile terminal of claim 1, wherein when a plurality of areas are selected in the first preview image, the controller extracts an image attribute value of the selected recommended image and applies the extracted image attribute value to each of the plurality of selected areas.

12. The mobile terminal of claim 1, wherein when a second area is selected in the first preview image before a predetermined time period elapses after displaying the second preview image wherein the selected recommended image is reflected in the selected area, the controller extracts an image attribute value of the selected recommended image and applies the extracted image attribute value to the second selected area.

13. The mobile terminal of claim 1, wherein when a plurality of recommended images are displayed and more than one recommended image is selected, the controller extracts an image attribute value from each of the selected recommended images and applies the extracted image attribute values to the selected area.

14. The mobile terminal of claim 1, wherein the controller changes image attributes of the selected recommended image in response to a dragging input on an area of the touch screen displaying the selected recommended image.

15. The mobile terminal of claim 1, wherein the controller separates the selected area into an object and a background and reflects the selected recommended image for the object.

16. The mobile terminal of claim 15, wherein the controller changes image attribute values of the background incrementally from a central area of the selected area to the boundary thereof until the background of the selected area is not distinguishable from other areas of the second preview image.

17. The mobile terminal of claim 15, wherein the controller applies image attribute values of the background in the selected area to the background of the remaining portion of the second preview image until the background of the selected area is not distinguishable from other areas of the second preview image.

18. The mobile terminal of claim 1, wherein the controller restores the second preview image to the first preview image in response to a third touch input.

19. A method for controlling a mobile terminal, the method comprising:

storing a range of reference values for each of a plurality of image attributes in a memory;

displaying on a touch screen a first preview image obtained from a camera;

receiving a first touch input selecting an area of the first preview image;

extracting a value for each of the plurality of image attributes from the selected area;

determining at least one image attribute having an extracted value that is not within the range of reference values among the plurality of image attributes;

generating at least one recommended image that is compensated to have value of the image attribute within the corresponding range of reference values for the determined at least one image attribute, the at least one recommended image corresponding to the selected area;

displaying on an area of the touch screen, the at least one recommended image, the at least one recommended image having image attributes, at least one of which has a value that differs from that of the selected area;

receiving a second touch input selecting one of the at least one displayed recommended images; and

displaying on the touch screen a second preview image reflecting the selected recommended image on the selected area.