1. College of Urban and Environmental Sciences,Northeast Normal University,Changchun 130024,China 2. The Faculty of Tourism and Geographical Science,Jilin Normal University,Siping 136000,China 3. College of Life Sciences,Northeast Normal University,Changchun 130024,China
Abstract：The present article uses the basic operation of the digital remote image radiometric calibration of the Quickbird with high distinguishing rate,including the physical attribute and the mathematical basement of digital images,the annotation as well as the format of image data. The study makes use of information of spectral radiance from the ground-atmosphere system,which is recorded by the digital remote image of Quick Bird in Honghe area. This dissertation offered the calculation means of radiometric calibration,and changed the pixel digital number into band-integrated radiance. Then,the spectral radiance was calculated. After the radiometric calibration,the Quick Bird image showed the quantitative information of spectral feature from various ground items. Only through the calibration can the Quick Bird image be quantitatively compared and analyzed with other remote sensor images. Thus,the inversion image has the value of application. The significance consists in offering important basic condition for the image amalgamation and better disposal of the special inforation pick-up. This effort also offered spectral information of the ground items for the inversion of the remote image. Therefore,the authors can combine the research of the spectral character of ground items with the establishment of the remote application model in order to quantitatively analyze the ground items.
Key words：Quick Bird digital image;Pixel digital number;Spectral radiometric calibration;absCalFactor(Absolute calculation factor);Image fusion
