Systems, devices, and methods for managing camera focus
Certain exemplary embodiments can provide a system, machine, device, manufacture, circuit, composition of matter, and/or user interface adapted for and/or resulting from, and/or a method and/or machine-readable medium comprising machine-implementable instructions for, activities that can comprise and/or relate to, via a device comprising an electro-active lens, automatically acquiring at least two images of a scene.
1. A method comprising:
via a photographic device comprising a liquid crystal electro-active lens and an image sensor that is optically aligned with the electro-active lens and a scene, upon receiving an acquisition initiation command, automatically acquiring at least two images of the scene without changing a field of view, orientation, or location of the electro-active lens or the image sensor, each image of the at least two images having a different focal depth, the scene comprising a plurality of predetermined regions, each image from the at least two images uniquely having a predetermined best focus for a corresponding predetermined region from the plurality of predetermined regions in comparison to the same predetermined region in the remaining images of the at least two images, each image of the at least two images acquired via a sequential plurality of changes in a voltage applied to the electro-active lens, each change from the sequential plurality of the changes involving, changing from a corresponding switching voltage to a holding voltage, the switching voltage higher than the holding voltage, each change from the sequential plurality of changes having a higher holding voltage than the previous holding voltage; and
rendering a selected image from the at least two images, the selected image having a best focus, with respect to any other of the at least two images, for a predetermined region of the at least two images.
2. The method of claim 1 , further comprising:
automatically changing a depth of focus of the electro-active lens between acquisition of a first image from the at least two images and a second image from the at least two images.
3. The method of claim 1 , further comprising:
automatically storing the at least two images.
4. The method of claim 1 , further comprising:
automatically determining the predetermined region.
5. The method of claim 1 , further comprising:
automatically determining which of the at least two images has the best focus.
6. The method of claim 1 , further comprising:
automatically storing the selected image.
7. The method of claim 1 , further comprising:
automatically storing the selected image outside the photographic device.
8. The method of claim 1 , further comprising:
automatically rendering a composite image that comprises a plurality of automatically selected regions from the at least two images, each selected region having a best focus with respect to a corresponding region of each of the at least two images.
9. The method of claim 1 , wherein:
the selected image is rendered via a display of the photographic device.
10. The method of claim 1 , wherein:
the selected image is rendered via a display of an information device.
11. The method of claim 1 , wherein:
the selected image is automatically selected by an image selection circuit of the photographic device.
12. The method of claim 1 , wherein:
the selected image is automatically selected by an image selection circuit of an information device.
13. The method of claim 1 , wherein:
a focus of each image from the at least two images is automatically determined by an image focus quality circuit of the photographic device.
14. The method of claim 1 , wherein:
a focus of each image from the at least two images is automatically determined by an image focus quality circuit of an information device.
15. The method of claim 1 , wherein:
the focal point of at least one image from the at least two images is greater than 3 meters.
16. The method of claim 1 , wherein:
the focal point of at least one image from the at least two images is between approximately 1 meter and approximately 3 meters.
17. The method of claim 1 , wherein:
the focal point of at least one image from the at least two images is between approximately 0.2 meters and approximately 1 meter.
18. The method of claim 1 , wherein:
the selected image is manually determined.
19. The method of claim 1 , wherein:
a selected object in the predetermined region has one or more edges that are sharpest in the selected image compared to any other of the at least two images.
20. The method of claim 1 , wherein:
a selected object in the predetermined region has one or more edges that are sharpest in the selected image compared to any other of the at least two images, the one or more edges automatically determined by a Sobel Edge Detection method.
21. The method of claim 1 , wherein:
a selected object in the predetermined region has a contrast that is highest in the selected image compared to any other of the at least two images.
22. The method of claim 1 , wherein:
an elapsed time between completing an acquisition of a first image from the at least two images and changing focus prior to beginning an acquisition of a second image from the at least two images is between approximately 2 milliseconds and 20 milliseconds.
23. A device comprising:
a liquid crystal electro-active lens; and
an image sensor that is optically aligned with the electro-active lens and a scene, the image sensor adapted to:
upon receiving an acquisition initiation command, automatically acquire at least two images of the scene without changing a field of view, orientation, or location of the electro-active lens or the image sensor, each image of the at least two images having a different focal depth, the scene comprising a plurality of predetermined regions, each image from the at least two images uniquely having a predetermined best focus for a corresponding predetermined region from the plurality of predetermined regions in comparison to the same predetermined region in the remaining images of the at least two images, each image of the at least two images acquired via a sequential plurality of changes in a voltage applied to the electro-active lens, each change from the sequential plurality of the changes involving changing from a corresponding switching voltage to a holding voltage, the switching voltage higher than the holding voltage, each change from the sequential plurality of changes having a higher holding voltage than the previous holding voltage; and
render a selected image from the at least two images, the selected image having a best focus, with respect to any other of the at least two images, for a predetermined region of the at least two images.
24. A non-transitory machine-readable medium storing machine-implementable instructions for activities comprising:
via a photographic device comprising a liquid crystal electro-active lens and an image sensor that is optically aligned with the electro-active lens and a scene:
upon receiving an acquisition initiation command, automatically acquiring at least two images of the scene without changing a field of view, orientation, or location of the electro-active lens or the image sensor, each image of the at least two images having a different focal depth, the scene comprising a plurality of predetermined regions, each image from the at least two images uniquely having a predetermined best focus for a corresponding predetermined region from the plurality of predetermined regions in comparison to the same predetermined region in the remaining images of the at least two images, each image of the at least two images acquired via a sequential plurality of changes in a voltage applied to the electro-active lens, each change from the sequential plurality of the changes involving changing from a corresponding switching voltage to a holding voltage, the switching voltage higher than the holding voltage, each change from the sequential plurality of changes having a higher holding voltage than the previous holding voltage; and
automatically rendering a selected image from the at least two images, the selected image having a best focus, with respect to any other of the at least two images, for a predetermined region of the at least two images.
25. A circuit comprising:
operative in a photographic device comprising a liquid crystal electro-active lens and an image sensor that is optically aligned with the electro-active lens and a scene:
a first sub-circuit adapted to, upon receiving an acquisition initiation command, automatically acquire at least two images of the scene without changing a field of view, orientation, or location of the electro-active lens or the image sensor, each image of the at least two images having a different focal depth, the scene comprising a plurality of predetermined regions, each image from the at least two images uniquely having a predetermined best focus for a corresponding predetermined region from the plurality of predetermined regions in comparison to the same predetermined region in the remaining images of the at least two images, each image of the at least two images acquired via a sequential plurality of changes in a voltage applied to the electro-active lens, each change from the sequential plurality of the changes involving changing from a corresponding switching voltage to a holding voltage, the switching voltage higher than the holding voltage, each change from the sequential plurality of changes having a higher holding voltage than the previous holding voltage; and
a second sub-circuit adapted to render a selected image from the at least two images, the selected image having a best focus, with respect to any other of the at least two images, for a predetermined region of the at least two images.
26. The method of claim 1 , wherein:
the plurality of concentric ring electrodes are each made from a clear, electrically conductive material.