Method and system for long exposure photography in a multi-camera device

A multi-camera device for performing long exposure photography, the multi-camera device comprising:

• a first camera;
• a second camera;
• at least one memory storing one or more instructions;
• and
• at least one processor configured to execute the one or more instructions, wherein the one or more instructions, when executed by the at least one processor, cause the multi-camera device to:
• receive first image frames at a first frame rate from the first camera;
• detect a presence of at least one moving object in each of the first image frames;
• based on the detection of the at least one moving object in each of the first image frames, receive second image frames at a second frame rate through the second camera;
• perform a motion analysis on each of the first image frames;
• select one or more frames among the second image frames based on the motion analysis;
• based on the one or more frames being selected, identify motion gaps in each of subsequent frames among the selected one or more frames;
• based on the motion gaps being identified, generate one or more in-place frames;
• and
• generate a motion dramatizer image based on the one or more in-place frames.

A non-transitory computer readable medium having instructions stored therein, which when executed by at least one processor cause the at least one processor to execute a method of controlling an electronic apparatus for performing long exposure photography in a multi-camera device, the method comprising:

• receiving first image frames at a first frame rate from a first camera of the multi-camera device;
• detecting a presence of at least one moving object in each of the first image frames;
• based on the detection of the at least one moving object in each of the first image frames, utilizing a second camera for receiving second image frames at a second frame rate;
• performing a motion analysis on each of the first image frames;
• selecting one or more frames among the second image frames based on the motion analysis;
• based on the one or more frames among the second image frames being selected, identifying motion gaps in each of subsequent frames among the selected one or more frames;
• based on the motion gaps being identified, generating one or more in-place frames;
• and
• generating a motion dramatizer image based on the one or more in-place frames.