Image providing apparatus and method

1. An image providing method comprising:

generating a first layer on which a first image is displayed;

generating a second layer on which a second image is displayed, the second image being different from the first image;

generating a mask based on a position of a region of interest in the first image; and

generating a display image based on at least one of the first layer, the second layer, and the mask,

wherein the generating of the display image comprises generating the display image based on a first partial region and a second partial region, the first partial region being a remaining region excluding a region corresponding to the region of interest on the first layer, and the second partial region corresponding to the region of interest on the second layer.

2. The image providing method of claim 1 , wherein the generating of the display image comprises:

generating a masked second layer by applying the mask to the second layer; and

generating the display image by overlapping the first layer with the masked second layer,

wherein the generating of the masked second layer comprises processing the second layer such that a region corresponding to the remaining region excluding the region of interest is transparent on the second layer.

3. The image providing method of claim 1 , wherein the generating of the display image comprises:

generating a masked first layer by applying the mask to the first layer; and

generating the display image by overlapping the second layer with the masked first layer,

wherein the generating of the masked first layer comprises processing the first layer such that the region corresponding to the region of interest is transparent on the first layer.

4. The image providing method of claim 1 , wherein the generating of the mask comprises setting the region of interest based on a user input with respect to the first image.

5. The image providing method of claim 4 , wherein the setting of the region of interest comprises:

obtaining a first input for a first point on the first image;

obtaining a second input for a second point on the first image, the second input being consecutive to the first input; and

determining the region of interest based on the first input and the second input.

6. The image providing method of claim 5 , wherein the setting of the region of interest further comprises, after the determining of the region of interest, changing at least one of the position and a size of the region of interest based on the user input.

7. The image providing method of claim 5 , wherein the generating of the mask further comprises updating the region of interest based on a moved position of an object of interest in the first image.

8. The image providing method of claim 1 , wherein a plurality of regions of interest are provided, and the generating of the mask comprises generating the mask based on a position of each of the plurality of regions of interest.

9. The image providing method of claim 1 , further comprising displaying the display image.

10. The image providing method of claim 9 , wherein the first image is a live image, the second image is a recorded image, and the generating of the second layer comprises obtaining a user input regarding a display time point of the second image.

11. The image providing method of claim 10 , wherein the displaying of the display image comprises further displaying a time slider showing at least one display time point, and the obtaining of the user input regarding the display time point comprises obtaining the user input on the time slider.

12. An image providing apparatus comprising a controller configured to generate a first layer, a second layer, and a mask and to generate a display image based on at least one of the first layer, the second layer, and the mask,

wherein the controller generates the first layer on which a first image is displayed, generates the second layer on which a second image is displayed, the second image being different from the first image, generates the mask based on a position of a region of interest in the first image, and generates the display image based on the at least one of the first layer, the second layer, and the mask, and

wherein the controller generates the display image based on a first partial region and a second partial region, the first partial region being a remaining region excluding a region corresponding to the region of interest on the first layer, and the second partial region corresponding to the region of interest on the second layer.

13. The image providing apparatus of claim 12 , wherein the controller generates a masked second layer by applying the mask to the second layer and generates the display image by overlapping the first layer with the masked second layer, and

wherein masked second layer is obtained by processing the second layer such that a region corresponding to the remaining region excluding the region of interest is transparent on the second layer.

14. The image providing apparatus of claim 12 , wherein the controller generates a masked first layer by applying the mask to the first layer and generates the display image by overlapping the second layer with the masked first layer, and

wherein the masked first layer is obtained by processing the first layer such that the region corresponding to the region of interest is transparent on the first layer.

15. The image providing apparatus of claim 12 , wherein the controller sets the region of interest based on a user input with respect to the first image.

16. The image providing apparatus of claim 15 , wherein the controller is further configured to update the region of interest based on a moved position of an object of interest in the first image.

17. The image providing apparatus of claim 12 , wherein a plurality of regions of interest are provided, and the controller generates the mask based on a position of each of the plurality of regions of interest.

18. The image providing apparatus of claim 12 , wherein the controller displays the display image on a display.