Color crosstalk is a special defect of Plasma Display Panel(PDP).The causes of the color crosstalk are introduced firstly.Then,a novel method based on the spectroradiometry for color crosstalk characterization is pres...Color crosstalk is a special defect of Plasma Display Panel(PDP).The causes of the color crosstalk are introduced firstly.Then,a novel method based on the spectroradiometry for color crosstalk characterization is presented.It measures the spectral radiance distribution of red,green and blue homochromous cells.Next,the spectral radiance distributions of the area which includes enough pixels are measured in the red,green,blue full screen.Several equations for the characterization coefficients can be built.The data in the wavelength ranges which include enough spectrum radiance power for homochromous cells are selected to calculate.These coefficients of crosstalk could be easily got in this way.Then,the experimental results of color crosstalk are analyzed.It is indicated that the spectroradiometric method is an effective method for characterizing color crosstalk.展开更多
This work presents the preliminary results of the first field calibration campaign performed in the Atacama Desert,Chile,between the 18 and 22 August 2014,called the Atacama Field Campaign(ATAFIC 2014).In situ measure...This work presents the preliminary results of the first field calibration campaign performed in the Atacama Desert,Chile,between the 18 and 22 August 2014,called the Atacama Field Campaign(ATAFIC 2014).In situ measurements were performed in order to spectrally characterize the surface reflectance spectra between 0.3 and 2.5μm,radiometric temperature(8.0–14.0μm)and atmospheric measurements.A soil sample was collected and analyzed using Fourier Transform Infrared Spectroscopy and X-Ray Diffraction techniques to characterize the surface reflectance spectra and mineralogical composition,respectively.ASTER land surface emissivity in addition to GOES,MODIS and Landsat-8 land surface temperature(LST)were also used.Results showed that the spectral features of the Atacama soil and the characteristics of this geographical zone,which is featured as the most hyper-arid and cloudless place in the world,make this area a potential target for surface reflectance characterization.Day and night LST comparison between field and remote sensing data are lower than 2 K and the Root Mean Square Error for land surface emissivity is close to 2%.This work opens the possibilities to consider the Atacama Desert as a reference target for calibration and validation activities for earth observation missions’purposes.展开更多
文摘Color crosstalk is a special defect of Plasma Display Panel(PDP).The causes of the color crosstalk are introduced firstly.Then,a novel method based on the spectroradiometry for color crosstalk characterization is presented.It measures the spectral radiance distribution of red,green and blue homochromous cells.Next,the spectral radiance distributions of the area which includes enough pixels are measured in the red,green,blue full screen.Several equations for the characterization coefficients can be built.The data in the wavelength ranges which include enough spectrum radiance power for homochromous cells are selected to calculate.These coefficients of crosstalk could be easily got in this way.Then,the experimental results of color crosstalk are analyzed.It is indicated that the spectroradiometric method is an effective method for characterizing color crosstalk.
基金partially funded by Fondecyt Initial[CONICYT/ref-11130359]The authors would also like to thank CNPq and CAPES for the scholarship given to Ms.Cibele T.Pinto and its research financial support.
文摘This work presents the preliminary results of the first field calibration campaign performed in the Atacama Desert,Chile,between the 18 and 22 August 2014,called the Atacama Field Campaign(ATAFIC 2014).In situ measurements were performed in order to spectrally characterize the surface reflectance spectra between 0.3 and 2.5μm,radiometric temperature(8.0–14.0μm)and atmospheric measurements.A soil sample was collected and analyzed using Fourier Transform Infrared Spectroscopy and X-Ray Diffraction techniques to characterize the surface reflectance spectra and mineralogical composition,respectively.ASTER land surface emissivity in addition to GOES,MODIS and Landsat-8 land surface temperature(LST)were also used.Results showed that the spectral features of the Atacama soil and the characteristics of this geographical zone,which is featured as the most hyper-arid and cloudless place in the world,make this area a potential target for surface reflectance characterization.Day and night LST comparison between field and remote sensing data are lower than 2 K and the Root Mean Square Error for land surface emissivity is close to 2%.This work opens the possibilities to consider the Atacama Desert as a reference target for calibration and validation activities for earth observation missions’purposes.
