Invention Grant
- Patent Title: Method and apparatus for determining exposure setting
- Patent Title (中): 用于确定曝光设置的方法和装置
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Application No.: US14696023Application Date: 2015-04-24
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Publication No.: US09402035B2Publication Date: 2016-07-26
- Inventor: Björn Benderius
- Applicant: Axis AB
- Applicant Address: SE Lund
- Assignee: Axis AB
- Current Assignee: Axis AB
- Current Assignee Address: SE Lund
- Agency: Volpe and Koenig, P.C.
- Priority: EP14165865 20140424
- Main IPC: H04N5/235
- IPC: H04N5/235 ; G03B7/00

Abstract:
A device and method for determining exposure settings in a camera is disclosed. The method comprises capturing an image frame using an image sensor, the exposure of the capturing is based on an initial exposure value setting, determining a temporary exposure value by finding an exposure value that results in a substantially optimum value when applied to a total cost calculation, calculating a saturated pixels cost related to the saturated pixels for the captured image at the temporary exposure value, determining a next exposure value by finding a decrease in exposure value, in relation to the temporary exposure value, for which decrease a change in total cost for non-saturated pixels, in relation to the total cost for non-saturated pixels at the temporary exposure value, is substantially equal to the saturated pixel cost calculated at the temporary exposure value, using this determined next exposure value for capturing a new image frame.
Public/Granted literature
- US20150312460A1 METHOD AND APPARATUS FOR DETERMINING EXPOSURE SETTING Public/Granted day:2015-10-29
Information query