Using a secondary camera for generating true optical blur in real time video

One or more non-transitory computer readable storage media encoded with instructions that, when executed by a computer processor of a video device, cause the computer processor to perform operations including:

• acquiring a first video stream from a first camera of the video device;
• detecting a foreground object in the first video stream;
• generating a foreground mask video stream based on the foreground object detected in the first video stream;
• acquiring a second video stream from a second camera of the video device, the second camera being adjusted to be intentionally out of focus, wherein the second video stream is optically blurred;
• determining a plurality of optically blurred background image frames and one or more optically blurred foreground image frames from the second video stream over time;
• combining the plurality of optically blurred background image frames to form an artificial background image;
• and
• combining the foreground mask video stream and the artificial background image to generate an output video stream that includes the foreground object against an optically blurred background that comprises the artificial background image.

An apparatus comprising,

• a first camera configured to provide a first video stream;
• a second camera configured to be intentionally out of focus to provide a second video stream, wherein the second video stream is optically blurred;
• and
• a processor configured to execute software instructions to:
• detect a foreground object in the first video stream;
• generate a foreground mask video stream based on the foreground object detected in the first video stream;
• determine a plurality of optically blurred background image frames and one or more optically blurred foreground image frames from the second video stream over time;
• combine the plurality of optically blurred background image frames to form an artificial background image;
• and
• combine the foreground mask video stream and the artificial background image to generate an output video stream that includes the foreground object against an optically blurred background that comprises the artificial background image.