Method for capturing a panoramic image by means of an image sensor rectangular in shape
Assignee6115187 Canada Inc.
InventorsChristophe Moustier, Benjamin Blanc
Life of this patent
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Abstract
The present invention relates to a method for capturing a digital panoramic image, by projecting a panorama onto an image sensor by means of a fish-eye objective lens having a constant field angle relative to its optical axis, the image sensor being rectangular in shape. According to the present invention, the fish-eye objective lens is provided to project onto the image sensor, without reducing the field of view, a distorted panoramic image (ID1) that covers a number of pixels on the image sensor higher than the number of pixels that would be covered by an image disk. Advantages: improvement in the definition in a useful zone of the image, particularly to improve the quality of digital zooms.
Claims21
Method for capturing a digital panoramic image, comprising a step of projecting a panorama (PM) onto an image sensor (16) by means of a fish-eye objective lens having a constant field angle relative to its optical axis, the image sensor being rectangular in shape,
- characterised in that the fish-eye objective lens (15, 30) is provided to project onto the image sensor (16), without reducing the field of view, a distorted panoramic image (ID1, ID3) which is not in the shape of a disk and which covers a number of pixels on the image sensor higher than the number of pixels that would be covered by a conventional image disk (4).
Fish-eye objective lens having a constant field angle relative to its optical axis and comprising optical means (L1-L8) for projecting the image of a panorama (PM) onto an image sensor (16), characterised in that it comprises optical means (L6-L7) for projecting, without reducing the field of view, a distorted image (ID1, ID3) that is not in the shape of a disk and which covers a number of pixels on an image sensor higher than the number of pixels that would be covered by a conventional image disk (4).
Dependencies are inferred from the claim text.