Sensor for capturing image and method for controlling the same
According to an embodiment of the present disclosure, an electronic device may comprise an image sensor and one or more processors configured to obtain a first plurality of image frames for an external object as per a first frame rate, detect a variation associated with the external object, when the variation meets a designated condition, obtain a second plurality of image frames for the external object as per the first frame rate or a second frame rate, generate a first portion of a video using at least some of the first plurality of image frames, generate a second portion of the video using at least some of the second plurality of image frames, and generate a third portion of the video using at least some of a third plurality of image frames for the external object obtained as per the first frame rate or a third frame rate.
1. An electronic device, comprising:
an image sensor; and
one or more processors, wherein the one or more processors are configured to:
receive a signal for high-speed photography;
obtain a first plurality of image frames as per a first frame rate through the image sensor in response to the signal for the high-speed photography;
detect a variation associated with an external object included in at least two image frames based on the first plurality of image frames;
in response to the variation associated with the external object meeting a designated condition, obtain a second plurality of image frames as per a second frame rate higher than the first frame rate;
when the variation associated with the external object does not meet the designated condition after obtaining the second plurality of image frames, obtain a third plurality of image frames as per the first frame rate through the image sensor; and
obtain a video including the first plurality of image frames obtained as per the first frame rate, the second plurality of image frames obtained as per the second frame rate, and the third plurality of image frames obtained as per the first frame rate.
2. The electronic device of claim 1 , wherein the one or more processors includes a first processor and a second processor, the first processor being included in the image sensor,
wherein the first processor is configured to:
receive the signal for the high-speed photography from the second processor;
obtain the first plurality of image frames as per the first frame rate in response to the signal for the high-speed photography;
detect the variation associated with the external object included in at least two image frames based on the first plurality of image frames;
when the variation associated with the external object meets the designated condition, obtain the second plurality of image frames as per the second frame rate higher than the first frame rate; and
when the variation associated with the external object does not meet the designated condition after obtaining the second plurality of image frames, obtain a third plurality of image frames as per the first frame rate through the image sensor, and
wherein the second processor is configured to
obtain a video including the first plurality of image frames obtained as per the first frame rate, the second plurality of image frames obtained as per the second frame rate, and the third plurality of image frames obtained as per the first frame rate.
3. The electronic device of claim 1 , wherein the image sensor further includes a memory, and wherein the one or more processors are further configured to:
store, in the memory, a designated number of first image frames among the first plurality of image frames.
4. The electronic device of claim 3 , wherein the one or more processors are further configured to:
select, as per a first ratio related to a frame rate of a first portion of the video and the first frame rate, the designated number of first image frames among the first plurality of image frames; and
store the selected first image frames in the memory.
5. The electronic device of claim 1 , wherein the one or more processors are further configured to:
display, on a display, preview image frames as per a third frame rate lower than the first frame rate while obtaining the first plurality of image frames, the second plurality of image frames, and the third plurality of image frames.
6. The electronic device of claim 1 , wherein the one or more processors are further configured to:
receive information about a region of interest (ROI) corresponding to at least part of the external object;
identify the ROI from at least one of the first plurality of image frames based on the information; and
detect the variation associated with the external object based on the identified ROI.
7. The electronic device of claim 1 , wherein the one or more processors are further configured to:
detect the variation associated with the external object based on image frames obtained after a preset time elapses from a time when the signal for the high-speed photography is received among the first plurality of image frames.
8. A method for operating an electronic device including an image sensor and one or more processors, the method comprising:
receiving a signal for high-speed photography;
obtaining a first plurality of image frames as per a first frame rate through the image sensor in response to the signal for the high-speed photography;
detecting a variation associated with an external object included in at least two image frames based on the first plurality of image frames;
when the variation associated with the external object meets a designated condition, obtaining a second plurality of image frames as per a second frame rate higher than the first frame rate;
when the variation associated with the external object does not meet the designated condition after obtaining the second plurality of image frames, obtaining a third plurality of image frames as per the first frame rate through the image sensor; and
obtaining a video including the first plurality of image frames obtained as per the first frame rate, the second plurality of image frames obtained as per the second frame rate, and the third plurality of image frames obtained as per the first frame rate.
9. A non-transitory computer readable medium embodying a computer program for operating an electronic device including an image sensor and one or more processors, the computer program comprising computer readable program code that, when executed by the one or more processors, cause the electronic device to:
receive a signal for high-speed photography;
obtain a first plurality of image frames as per a first frame rate through the image sensor in response to the signal for the high-speed photography;
detect a variation associated with an external object included in at least two image frames based on the first plurality of image frames;
when the variation associated with the external object meets a designated condition, obtain a second plurality of image frames as per a second frame rate higher than the first frame rate;
when the variation associated with the external object does not meet the designated condition after obtaining the second plurality of image frames, obtain a third plurality of image frames as per the first frame rate through the image sensor; and
obtain a video including the first plurality of image frames obtained as per the first frame rate, the second plurality of image frames obtained as per the second frame rate, and the third plurality of image frames obtained as per the first frame rate.