Dynamically adjusting sampling of a real-time depth map

1. A method comprising:

capturing real-time scan data by a first camera and a second camera of an image capturing device;

synchronizing, by a processor, a first plurality of frames of the real-time scan data captured by the first camera with a second plurality of frames captured by the second camera to create a plurality of synchronized frames at a first frame rate;

analyzing the plurality of synchronized frames to determine whether motion exists within the current scene;

in response to determining motion exists within the current scene:

determining, based on the plurality of synchronized frames, a rate of motion within the current scene;

dynamically calculating a target resolution and a target frame rate based on the rate of motion; and

generating, from the real-time scan data, a real-time depth map at the target resolution and target frame rate; and

in response to the analysis of the plurality of synchronized frames indicating that the current scene is a static scene, combining, by the processor, the real-time scan data captured by the first camera and the second camera at the first frame rate to generate a full-resolution real-time depth map of the current scene at the first frame rate and a full resolution of at least one of the first camera and the second camera.

2. The method of claim 1 , wherein calculating the target resolution and the target frame rate further comprises:

selecting, based on the determined rate of motion, a second resolution that is lower than a full resolution of at least one of the first camera and the second camera as the target resolution; and

selecting, based on the determined rate of motion, a second frame rate that is higher than the first frame rate as the target frame rate.

3. The method of claim 2 , wherein generating the real-time depth map further comprises:

down-sampling the real-time scan data to the second resolution based on the determined rate of motion; and

combining, by the processor, the down-sampled real-time scan data captured by the first camera and the second camera at the second frame rate to generate the real-time depth map at the second frame rate and the second resolution.

4. The method of claim 1 , further comprising:

in response to determining motion exists within the current scene:

determining whether the rate of motion corresponds to a high-speed motion range; and

in response to determining the rate of motion corresponds to a high-speed motion range:

selecting, from a database, a high-motion resolution that is lower than a full resolution of at least one of the first camera and the second camera as the target resolution;

selecting, from the database, a high-motion frame rate that is higher than the first frame rate as the target frame rate;

down-sampling the real-time scan data to the high-motion resolution; and

combining, by the processor, the down-sampled real-time scan data captured by the first camera and the second camera at the high-motion frame rate to generate the real-time depth map at the high-motion frame rate and the high-motion resolution.

5. The method of claim 4 , further comprising:

in response to determining motion exists within the current scene:

determining whether the rate of motion corresponds to a low-speed motion range; and

in response to determining the rate of motion corresponds to a low-speed motion range:

selecting, from the database, a low-motion resolution that is lower than the full resolution and higher than the high-motion resolution as the target resolution;

selecting, from the database, a low-motion frame rate that is higher than the first frame rate and lower than the high-motion frame rate as the target frame rate;

down-sampling the real-time scan data to the low-motion resolution; and

combining, by the processor, the down-sampled real-time scan data captured by the first camera and the second camera at the low-motion frame rate to generate the real-time depth map at the low-motion frame rate and the low-motion resolution.

6. The method of claim 1 , wherein dynamically calculating the target resolution and the target frame rate further comprises:

calculating, based on the rate of motion, a minimum frame rate to capture the motion within the current scene;

calculating a maximum resolution of the real-time depth map based on the minimum frame rate and a maximum calculation time of each frame of a real-time depth map;

establishing the minimum frame rate as the target frame rate; and

establishing the maximum resolution as the target resolution.

7. An image capturing device comprising:

a first camera that captures a first scan data of a current scene at a full resolution;

a second camera that captures a second scan data of the current scene at the full resolution; and

at least one processor that:

synchronizes the first scan data and the second scan data to create a plurality of synchronized frames at a first frame rate;

analyzes the plurality of synchronized frames to determine whether motion exists within the current scene;

in response to determining motion exists within the current scene:

determines, based on the plurality of synchronized frames, a rate of motion within the current scene;

dynamically calculates a target resolution and a target frame rate based on the rate of motion; and

generates, from the real-time scan data, a real-time depth map at the target resolution and target frame rate; and

in response to determining that the analysis of the plurality of synchronized frames indicates that the current scene is a static scene, combines the real-time scan data captured by the first camera and the second camera at the first frame rate to generate a full-resolution real-time depth map of the current scene at the first frame rate and the full resolution.

8. The image capturing device of claim 7 , wherein in calculating the target resolution and the target frame rate, the at least one processor:

selects, based on the rate of motion, a second resolution that is lower than the full resolution as the target resolution; and

selects, based on the rate of motion, a second frame rate that is higher than the first frame rate as the target frame rate.

9. The image capturing device of claim 8 , wherein in generating the real-time depth map, the at least one processor:

down-samples the real-time scan data to the second resolution based on the determined rate of motion; and

combines the down-sampled real-time scan data captured by the first camera and the second camera at the second frame rate to generate the real-time depth map at the second frame rate and the second resolution.

10. The image capturing device of claim 7 , wherein in response to determining motion exists within the current scene, the at least one processor:

determines whether the rate of motion corresponds to a high-speed motion range; and

in response to determining the rate of motion corresponds to a high-speed motion range:

selects, from a database, a high-motion resolution that is lower than the full resolution as the target resolution;

selects, from the database, a high-motion frame rate that is higher than the first frame rate as the target frame rate;

down-samples the real-time scan data to the high-motion resolution; and

combines the down-sampled real-time scan data captured by the first camera and the second camera at the high-motion frame rate to generate the real-time depth map at the high-motion frame rate and the high-motion resolution.

11. The image capturing device of claim 10 , wherein in response to determining motion exists within the current scene, the at least one processor:

determines whether the rate of motion corresponds to a low-speed motion range; and

in response to determining the rate of motion corresponds to a low-speed motion range:

selects, from the database, a low-motion resolution that is lower than the full resolution and higher than the high-motion resolution as the target resolution;

selects, from the database, a low-motion frame rate that is higher than the first frame rate and lower than the high-motion frame rate as the target frame rate;

down-samples the real-time scan data to the low-motion resolution; and

combines, by the processor, the down-sampled real-time scan data captured by the first camera and the second camera at the low-motion frame rate to generate the real-time depth map at the low-motion frame rate and the low-motion resolution.

12. The image capturing device of claim 7 , wherein in calculating the target resolution and the target frame rate, the processor:

calculates, based on the rate of motion, a minimum frame rate to capture the motion within the current scene;

calculates a maximum resolution of the real-time depth map based on the minimum frame rate and a maximum calculation time of each frame of a real-time depth map;

establishes the minimum frame rate as the target frame rate; and

establishes the maximum resolution as the target resolution.

13. A computer program product comprising:

a computer readable storage device; and

program code on the computer readable storage device that, when executed by a processor associated with an image capturing device, configures the image capturing device to provide the functionality of:

capturing real-time scan data at a full resolution by a first camera and a second camera of an image capturing device;

synchronizing, by a processor, a first plurality of frames of the real-time scan data captured by the first camera with a second plurality of frames captured by the second camera to create a plurality of synchronized frames at a first frame rate;

analyzing the plurality of synchronized frames to determine whether motion exists within the current scene;

in response to determining motion exists within the current scene:

determining, based on the plurality of synchronized frames, a rate of motion within the current scene;

dynamically calculating a target resolution and a target frame rate based on the rate of motion; and

generating, from the real-time scan data, a real-time depth map at the target resolution and target frame rate; and

in response to the analysis of the plurality of synchronized frames indicating that the current scene is a static scene, combining the real-time scan data captured by the first camera and the second camera at the first frame rate to generate a full-resolution real-time depth map of the current scene at the first frame rate and the full resolution.

14. The computer program product of claim 13 , the program code for calculating the target resolution and the target frame rate further comprising code for:

selecting, based on the determined rate of motion, a second resolution that is lower than the full resolution as the target resolution; and

selecting, based on the determined rate of motion, a second frame rate that is higher than the first frame rate as the target frame rate.

15. The computer program product of claim 14 , the program code for generating the real-time depth map further comprising code for:

down-sampling the real-time scan data to the second resolution based on the determined rate of motion; and

combining, by the processor, the down-sampled real-time scan data captured by the first camera and the second camera at the second frame rate to generate the real-time depth map at the second frame rate and the second resolution.

16. The computer program product of claim 13 , the program code further comprising code for:

in response to determining motion exists within the current scene:

determining whether the rate of motion corresponds to a high-speed motion range; and

in response to determining the rate of motion corresponds to a high-speed motion range:

selecting, from a database, a high-motion resolution that is lower than a full resolution of at least one of the first camera and the second camera as the target resolution;

selecting, from the database, a high-motion frame rate that is higher than the first frame rate as the target frame rate;

down-sampling the real-time scan data to the high-motion resolution; and

combining, by the processor, the down-sampled real-time scan data captured by the first camera and the second camera at the high-motion frame rate to generate the real-time depth map at the high-motion frame rate and the high-motion resolution.

17. The computer program product of claim 16 , the program code further comprising code for:

in response to determining motion exists within the current scene:

determining whether the rate of motion corresponds to a low-speed motion range; and

in response to determining the rate of motion corresponds to a low-speed motion range:

selecting, from the database, a low-motion resolution that is lower than the full resolution and higher than the high-motion resolution as the target resolution;

selecting, from the database, a low-motion frame rate that is higher than the first frame rate and lower than the high-motion frame rate as the target frame rate;

down-sampling the real-time scan data to the low-motion resolution; and

combining, by the processor, the down-sampled real-time scan data captured by the first camera and the second camera at the low-motion frame rate to generate the real-time depth map at the low-motion frame rate and the low-motion resolution.

18. The computer program product of claim 13 , the program code for dynamically calculating the target resolution and the target frame rate further comprising code for:

calculating, based on the rate of motion, a minimum frame rate to capture the motion within the current scene;

calculating a maximum resolution of the real-time depth map based on the minimum frame rate and a maximum calculation time of each frame of a real-time depth map;

establishing the minimum frame rate as the target frame rate; and

establishing the maximum resolution as the target resolution.