The starting point for focus stacking is a alternation of images captured at altered focal depths, in anniversary angel altered areas of the sample will be in focus. While none of these images accept the sample absolutely in focus they collectively accommodate all the abstracts appropriate to accomplish an angel which has all locations of the sample in focus. In-focus regions of anniversary angel may be detected automatically, for archetype via bend apprehension or fourier analysis, or alleged manually. The in-focus patches are again attenuated calm to accomplish the final image.
Focus stacking NEC USB dent imgp0017 wp.ogv
Example action performed with chargeless Software Combine ZP
edit In photography
Getting acceptable abyss of acreage can be decidedly arduous in macro photography, because abyss of acreage is abate (shallower) for altar nearer the camera, so if a baby article fills the frame, it is generally so abutting that its absolute abyss cannot be in focus at once. Abyss of acreage is commonly added by endlessly down breach (using a above f number), but above a assertive point, endlessly down causes abashing due to diffraction, which counteracts the account of getting in focus. Focus stacking allows the abyss of acreage of images taken at the sharpest breach to be finer increased. The images at appropriate allegorize the access in DOF that can be accomplished by accumulation assorted exposures.
The Mars Science Laboratory mission has a accessory alleged Mars Hand Lens Imager (MAHLI) which can takes some images in focus stacking.2
Focus stacking NEC USB dent imgp0017 wp.ogv
Example action performed with chargeless Software Combine ZP
edit In photography
Getting acceptable abyss of acreage can be decidedly arduous in macro photography, because abyss of acreage is abate (shallower) for altar nearer the camera, so if a baby article fills the frame, it is generally so abutting that its absolute abyss cannot be in focus at once. Abyss of acreage is commonly added by endlessly down breach (using a above f number), but above a assertive point, endlessly down causes abashing due to diffraction, which counteracts the account of getting in focus. Focus stacking allows the abyss of acreage of images taken at the sharpest breach to be finer increased. The images at appropriate allegorize the access in DOF that can be accomplished by accumulation assorted exposures.
The Mars Science Laboratory mission has a accessory alleged Mars Hand Lens Imager (MAHLI) which can takes some images in focus stacking.2
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