发明名称 |
IMAGE-BASED DETERMINATION OF CO AND CO2 CONCENTRATIONS IN VEHICLE EXHAUST GAS EMISSIONS |
摘要 |
What is disclosed is a system and method for image-based determination of concentration of CO and CO2 in a vehicle's exhaust gas in an emissions testing environment. In one embodiment, the present method involves receiving an IR image of the exhaust plume of a motor vehicle intended to be tested for CO and CO2 concentrations. The IR image has been captured using a mid-wave infrared camera with at least one optical filter tuned to the infrared absorption band of CO and CO2. The images are pre-processed to isolate pixels which contain the exhaust plume. The intensity values of pixels in those isolated regions are normalized and concentrations of CO and CO2 are determined via a calibration curve which relates pixel intensities to concentrations. The concentrations are compared to an emissions standard set for the vehicle to determine whether the vehicle is a gross polluter.
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申请公布号 |
US2013181836(A1) |
申请公布日期 |
2013.07.18 |
申请号 |
US201213419856 |
申请日期 |
2012.03.14 |
申请人 |
CARDOSO GEORGE CUNHA;MESTHA LALIT KESHAV;XEROX CORPORATION |
发明人 |
CARDOSO GEORGE CUNHA;MESTHA LALIT KESHAV |
分类号 |
G06K9/62;G08B21/00;H04N7/18 |
主分类号 |
G06K9/62 |
代理机构 |
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地址 |
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