发明名称 High accuracy imaging colorimeter by special designed pattern closed-loop calibration assisted by spectrograph
摘要 This specification describes various embodiments that relate to methods for providing a wideband colorimeter that can include more accurate outputs. In one embodiment, a narrowband instrument, such as a spectrometer or spectrograph, can be used for calibration of a wideband colorimeter, so that more accurate outputs can be provided. In one embodiment, an optical test equipment, which consists of both a wideband colorimeter and a narrowband spectrograph, can be used for providing a more accurately calibrated wideband colorimeter. As an example, a spectra-camera, which is a hybrid system consisting of both a wideband colorimeter and a narrowband spectrograph, can be used for simultaneous testing by both the wideband colorimeter and the narrowband spectrograph. By doing simultaneous testing, accurate calibration of the wideband colorimeter can be achieved. This specification further describes a mathematical model to characterize a wideband three channel colorimeter with a narrowband multiple channel spectrometer.
申请公布号 US8937719(B2) 申请公布日期 2015.01.20
申请号 US201314058055 申请日期 2013.10.18
申请人 发明人 Yin Ye;Marcu Gabriel G.;Wu Jiaying
分类号 G01J3/46;G01J3/28 主分类号 G01J3/46
代理机构 Womble Carlyle Sandridge & Rice, LLP 代理人 Womble Carlyle Sandridge & Rice, LLP
主权项 1. A system configured to use a narrowband color measurement device to calibrate an output of a wideband color measurement device, the system comprising: a splitter configured to split an image of a test pattern into a first image and a second image; a first image pipeline to direct the first image to a narrowband device configured to capture a first data from the first image; a second image pipeline to direct the second image to a wideband device configured to capture a second data from the second image, wherein the captured first data and the captured second data are used to determine a best fit correction matrix relating color data of the captured first data and the captured second data, and the best fit correction matrix is evaluated for being acceptable as a calibration parameter for a color measurement of the wideband device.
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