Cinematic image blur in digital cameras based on exposure timing manipulation
View Patent ↗Cinematic motion blur and other cinematic effects are enabled during image capture through exposure timing manipulation. The resulting captured images and videos include one or more cinematic effects without the need for a user to impose the cinematic effects post-capture.
1. A method for capturing an image by a digital camera, the method comprising:
accessing, by a camera interface, an image capture setting comprising a pulse pattern including a plurality of pulse durations each separated by a non-zero spacing duration such that a total exposure time comprising a sum of the pulse durations is less than an effective exposure time comprising a sum of the pulse durations and the non-zero spacing durations;
capturing, by an image sensor of the camera, image information by applying the pulse pattern to an exposure input of the image sensor, the image information representative of light incident upon the image sensor during the pulse durations and not representative of light incident upon the image sensor during the spacing durations; and
outputting, by the image sensor, the captured image information for storage by the camera by applying a signal to a read input of the input sensor after an interval of time equal to or greater than the effective exposure time.
2. The method of claim 1 , wherein the effective exposure time is selected to correspond to an exposure time for a film camera.
3. The method of claim 1 , wherein two or more of the pulse durations comprise the same duration.
4. The method of claim 1 , wherein two or more of the pulse durations comprise different durations.
5. The method of claim 1 , wherein two or more of the spacing durations comprises the same duration.
6. The method of claim 1 , wherein two or more of the spacing durations comprise different durations.
7. The method of claim 1 , wherein the image capture setting is selected by a user of the camera.
8. A camera system comprising a digital image sensor, a processor, and a non-transitory computer-readable storage medium storing instructions configured to, when executed by the processor, cause the camera system to:
access an image capture setting comprising a pulse pattern including a plurality of pulse durations each separated by a non-zero spacing duration such that a total exposure time comprising a sum of the pulse durations is less than an effective exposure time comprising a sum of the pulse durations and the non-zero spacing durations;
capture image information by applying the pulse pattern to an exposure input of the image sensor, the image information representative of light incident upon the image sensor during the pulse durations and not representative of light incident upon the image sensor during the spacing durations; and
output the captured image information for storage by applying a signal to a read input of the input sensor after an interval of time equal to or greater than the effective exposure time.
9. The camera system of claim 8 , wherein the effective exposure time is selected to correspond to an exposure time for a film camera.
10. The camera system of claim 8 , wherein two or more of the pulse durations comprise the same duration.
11. The camera system of claim 8 , wherein two or more of the pulse durations comprise different durations.
12. The camera system of claim 8 , wherein two or more of the spacing durations comprises the same duration.
13. The camera system of claim 8 , wherein two or more of the spacing durations comprise different durations.
14. The camera system of claim 8 , wherein the image capture setting is selected by a user of the camera system.
15. A non-transitory computer readable storage medium having executable computer program instructions embodied therein for execution by a camera processor, the instructions comprising steps for:
accessing, by a camera interface, an image capture setting comprising a pulse pattern including a plurality of pulse durations each separated by a non-zero spacing duration such that a total exposure time comprising a sum of the pulse durations is less than an effective exposure time comprising a sum of the pulse durations and the non-zero spacing durations;
capturing, by an image sensor, image information by applying the pulse pattern to an exposure input of the image sensor, the image information representative of light incident upon the image sensor during the pulse durations and not representative of light incident upon the image sensor during the spacing durations; and
outputting, by the image sensor, the captured image information for storage by the camera by applying a signal to a read input of the input sensor after an interval of time equal to or greater than the effective exposure time.
16. The computer-readable storage medium of claim 15 , wherein the effective exposure time is selected to correspond to an exposure time for a film camera.
17. The computer-readable storage medium of claim 15 , wherein two or more of the pulse durations comprise the same duration.
18. The computer-readable storage medium of claim 15 , wherein two or more of the pulse durations comprise different durations.
19. The computer-readable storage medium of claim 15 , wherein two or more of the spacing durations comprises the same duration.
20. The computer-readable storage medium of claim 15 , wherein two or more of the spacing durations comprise different durations.