Electronic device, operating method and computer readable storage medium for providing post masking within image when shooting video

A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions to, when executed by an electronic device with a camera, cause the electronic device to:

• based on an input for generating a video, obtain, via the camera, image frames including a first image frame, a second image frame, and a third image frame, wherein the second image frame is obtained prior to the first image frame, and wherein the third image frame is obtained prior to the second image frame;
• identify a visual object to which an image masking is to be applied in the first image frame;
• based on identifying the visual object in a portion of the first image frame:
• apply the image masking to the first image frame, and
• identify the visual object in the second image frame;
• based on identifying the visual object in a portion of the second image frame:
• apply the image masking to the second image frame, and
• identify a positional difference, for determining a search area to be used for identifying the visual object included in the third image frame, between the portion of the first image frame and the portion of the second image frame;
• determine a movement direction of the visual object based on the positional difference;
• in accordance with the movement direction of the visual object, determine a center point for the search area, wherein the center point for the search area is spaced apart from a center point of the portion of the second image frame by the positional difference in a direction opposite to the movement direction;
• determine the search area using the center point for the search area determined based on the movement direction of the visual object;
• identify whether the visual object is included in the search area of the third image frame;
• based on identifying that the visual object is included in the search area of the third image frame, apply the image masking to the third image frame;
• based on identifying that the visual object is not included in the search area of the third image frame, search for the visual object in a remaining area different from the search area in the third image frame;
• and
• generate the video including the image frames.