Invention Grant
- Patent Title: Local black points in aerial imagery
- Patent Title (中): 当地黑点在航空影像中
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Application No.: US13018986Application Date: 2011-02-01
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Publication No.: US08666190B1Publication Date: 2014-03-04
- Inventor: David Marwood , Hong Guo , Aaron Yonas
- Applicant: David Marwood , Hong Guo , Aaron Yonas
- Applicant Address: US CA Mountain View
- Assignee: Google Inc.
- Current Assignee: Google Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Dority & Manning, P.A.
- Main IPC: G06K9/00
- IPC: G06K9/00

Abstract:
The system and method of use are provided for correcting digital images based on the notions of local black points. The system and method are based on determining local black points in a digital image and correcting the intensities of nearby pixels so as to remove bias in the image introduced by atmospheric conditions. By sampling only localized land imagery the claimed method computes black points that are more robust against the localized effects of atmospheric and land reflection effects than black points computed from wider areas. The result of the method is that images corrected by this method are robust to atmospheric conditions that vary with time and viewing angle.
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