Invention Grant
- Patent Title: Depth map based perspective correction in digital photos
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Application No.: US15508390Application Date: 2015-09-04
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Publication No.: US10154241B2Publication Date: 2018-12-11
- Inventor: Tore Svortdal , Pierre Craen , Nicolas Tallaron , Jacques Dumarest
- Applicant: Polight AS
- Applicant Address: NO Horten
- Assignee: Polight AS
- Current Assignee: Polight AS
- Current Assignee Address: NO Horten
- Agency: Knobbe Martens Olson & Bear LLP
- Priority: EP14183766 20140905
- International Application: PCT/EP2015/070246 WO 20150904
- International Announcement: WO2016/034709 WO 20160310
- Main IPC: H04N13/128
- IPC: H04N13/128 ; G06T3/00 ; G06T5/00 ; H04N13/122

Abstract:
The invention relates to post-processing of a digital photo to correct perspective distortion in the photo. The correction applies a digital photo of a scene and a depth map associated with the photo and comprising, for each pixel in the photo, a depth being a distance between a part of the scene in that pixel and a position of the camera at the time of acquisition. The correction is performed locally, so that the correction of any pixel in the photo depends on the depth of that pixel. The correction can be implemented as a transformation of each pixel in the original photo into a new position in a corrected photo. Afterwards, pixel values has to be calculated for the pixels in the corrected photo using the original pixel values and their new positions. The invention is particularly relevant for photos where objects or scenes involves a large magnification variation, such as selfies, close up photos, and photos when the extension of a large, object is not orthogonal to the optical axis of the camera (low/high angle shots).
Public/Granted literature
- US20170289516A1 DEPTH MAP BASED PERSPECTIVE CORRECTION IN DIGITAL PHOTOS Public/Granted day:2017-10-05
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