SYSTEMS AND METHODS FOR GENERATING TIME-LAPSE VIDEOS

1 . An image capture device for generating time-lapse videos using a dynamic time-lapse video frame rate, the image capture device comprising:

a housing;

an image sensor carried by the housing and configured to generate a visual output signal conveying visual information based on light that becomes incident thereon, the visual information defining visual content of images;

an optical element carried by the housing and configured to guide light within a field of view to the image sensor;

a position sensor carried by the housing and configured to generate a position output signal conveying position information of the image capture device, the position information characterizing positions of the image capture device; and

one or more physical processors carried by the housing and configured by machine-readable instructions to:

determine a position-based time-lapse video frame rate factor based on the positions of the image capture device;

determine a visual-based time-lapse video frame rate factor based on apparent motion between the visual content of pairs of the images;

dynamically determine values of the dynamic time-lapse video frame rate based on the position-based time-lapse video frame rate factor and the visual-based time-lapse video frame rate factor, the dynamic time-lapse video frame rate defining a rate for generating time-lapse video frames; and

generate the time-lapse video frames based on the values of the dynamic time-lapse video frame rate.

2 . The image capture device of claim 1 , further comprising a buffer, wherein:

the images are stored in the buffer; and

generation of the time-lapse video frames based on the values of the dynamic time-lapse video frame rate includes selection the images stored in the buffer based on the values of the dynamic time-lapse video frame rate.

3 . The image capture device of claim 2 , wherein determination of the visual-based time-lapse video frame rate factor includes:

determination of the apparent motion between the visual content of a given pair of the images; and

determination of the visual-based time-lapse video frame rate factor based on the apparent motion between the visual content of the given pair of the images.

4 . The image capture device of claim 3 , wherein the apparent motion between the visual content of the given pair of the images is determined based on optical flow between the given pair of the images.

5 . The image capture device of claim 4 , wherein the apparent motion between the visual content of the given pair of the images is determined as one or more values that indicate length, direction, and/or type of the optical flow between the given pair of the images.

6 . The image capture device of claim 1 , wherein determination of the position-based time-lapse video frame rate factor includes:

determination of periodic motion of the image capture device based on the positions of the image capture device; and

determination of the position-based time-lapse video frame rate factor based on the periodic motion of the image capture device.

7 . The image capture device of claim 6 , wherein the periodic motion of the image capture device includes the image capture device alternating between different rotational positions, with a field of view of the image capture device being pointed in same direction at periodic moments.

8 . The image capture device of claim 1 , wherein:

the position-based time-lapse video frame rate factor includes a first set of scores for different values of the dynamic time-lapse video frame rate;

the visual-based time-lapse video frame rate factor includes a second set of scores for different values of the dynamic time-lapse video frame rate; and

the values of the dynamic time-lapse video frame rate are determined based on combination of the first set of scores from the position-based time-lapse video frame rate factor and the second set of scores from the visual-based time-lapse video frame rate factor.

9 . The image capture device of claim 1 , wherein determination of the values of the dynamic time-lapse video frame rate based on the position-based time-lapse video frame rate factor and the visual-based time-lapse video frame rate factor includes:

determination of an initial value of the dynamic time-lapse video frame rate based on the position-based time-lapse video frame rate factor; and

adjustment of the initial value of the dynamic time-lapse video frame rate based on the visual-based time-lapse video frame rate factor.

10 . A method for generating time-lapse videos using a dynamic time-lapse video frame rate, the method performed by an image capture device including one or more processors, an image sensor, an optical element, and a position sensor, the image sensor configured to generate a visual output signal conveying visual information based on light that becomes incident thereon, the visual information defining visual content of images, the optical element configured to guide light within a field of view to the image sensor, the position sensor configured to generate a position output signal conveying position information of the image capture device, the position information characterizing positions of the image capture device, the method comprising:

determining a position-based time-lapse video frame rate factor based on the positions of the image capture device;

determining a visual-based time-lapse video frame rate factor based on apparent motion between the visual content of pairs of the images;

dynamically determining values of the dynamic time-lapse video frame rate based on the position-based time-lapse video frame rate factor and the visual-based time-lapse video frame rate factor, the dynamic time-lapse video frame rate defining a rate for generating time-lapse video frames; and

generating the time-lapse video frames based on the values of the dynamic time-lapse video frame rate.

11 . The method of claim 10 , wherein:

the images are stored in a buffer; and

generating the time-lapse video frames based on the values of the dynamic time-lapse video frame rate includes selecting the images stored in the buffer based on the values of the dynamic time-lapse video frame rate.

12 . The method of claim 11 , wherein determining the visual-based time-lapse video frame rate factor includes:

determining the apparent motion between the visual content of a given pair of the images; and

determining the visual-based time-lapse video frame rate factor based on the apparent motion between the visual content of the given pair of the images.

13 . The method of claim 12 , wherein the apparent motion between the visual content of the given pair of the images is determined based on optical flow between the given pair of the images.

14 . The method of claim 13 , wherein the apparent motion between the visual content of the given pair of the images is determined as one or more values that indicate length, direction, and/or type of the optical flow between the given pair of the images.

15 . The method of claim 10 , wherein determining the position-based time-lapse video frame rate factor includes:

determining periodic motion of the image capture device based on the positions of the image capture device; and

determining the position-based time-lapse video frame rate factor based on the periodic motion of the image capture device.

16 . The method of claim 15 , wherein the periodic motion of the image capture device includes the image capture device alternating between different rotational positions, with a field of view of the image capture device being pointed in same direction at periodic moments.

17 . The method of claim 10 , wherein:

the position-based time-lapse video frame rate factor includes a first set of scores for different values of the dynamic time-lapse video frame rate;

the visual-based time-lapse video frame rate factor includes a second set of scores for different values of the dynamic time-lapse video frame rate; and

the values of the dynamic time-lapse video frame rate are determined based on combination of the first set of scores from the position-based time-lapse video frame rate factor and the second set of scores from the visual-based time-lapse video frame rate factor.

18 . The method of claim 10 , wherein determining the values of the dynamic time-lapse video frame rate based on the position-based time-lapse video frame rate factor and the visual-based time-lapse video frame rate factor includes:

determining an initial value of the dynamic time-lapse video frame rate based on the position-based time-lapse video frame rate factor; and

adjusting the initial value of the dynamic time-lapse video frame rate based on the visual-based time-lapse video frame rate factor.

19 . An image capture device for generating time-lapse videos using a dynamic time-lapse video frame rate, the image capture device comprising:

a housing;

an image sensor carried by the housing and configured to generate a visual output signal conveying visual information based on light that becomes incident thereon, the visual information defining visual content of images;

an optical element carried by the housing and configured to guide light within a field of view to the image sensor;

a position sensor carried by the housing and configured to generate a position output signal conveying position information of the image capture device, the position information characterizing positions of the image capture device; and

one or more physical processors carried by the housing and configured by machine-readable instructions to:

determine a position-based time-lapse video frame rate factor based on the positions of the image capture device;

determine a visual-based time-lapse video frame rate factor based on apparent motion between the visual content of pairs of the images;

dynamically determine values of the dynamic time-lapse video frame rate based on the position-based time-lapse video frame rate factor and the visual-based time-lapse video frame rate factor, the dynamic time-lapse video frame rate defining a rate for generating time-lapse video frames; and

generate the time-lapse video frames based on the values of the dynamic time-lapse video frame rate, wherein at least some of the time-lapse video frames are stabilized based on a punchout of the visual content of the images.

20 . The image capture device of claim 19 , wherein:

the position-based time-lapse video frame rate factor includes a first set of scores for different values of the dynamic time-lapse video frame rate;

the visual-based time-lapse video frame rate factor includes a second set of scores for different values of the dynamic time-lapse video frame rate; and

the values of the dynamic time-lapse video frame rate are determined based on combination of the first set of scores from the position-based time-lapse video frame rate factor and the second set of scores from the visual-based time-lapse video frame rate factor.