Proc. SPIE. 8897, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VII; and Military Applications in Hyperspectral Imaging and High Spatial Resolution Sensing
KEYWORDS: Optical filters, Digital image processing, Image processing, Digital filtering, Remote sensing, Digital imaging, Signal processing, Image filtering, Modulation transfer functions, Electronic filtering
As the development of semiconductor technology, the manufacture process of CCD sensors has been improved continuously. In recent years some new technologies appear on CCD sensors. Analog pixel Binning technology is one of them. In this paper, a new signal-processing system of digital pixel binning based on bi-cubic filtering algorithm is designed .The system overcomes the shortcomings of losing some image details, caused by analog pixel binning which does simply summation of pixel signals. The signal-processing system of digital pixel binning can keep high frequency information through bi-cubic filtering algorithm, which can improve the contrast and MTF of the remote sensing images. This system can achieve pixel binning with lower computational complexity and also it has the good real-time capability for large-scale remote sensing images.
The gray distribution and contrast of the optical satellite remote sensing imagery in the same kind of
ground surface acquired by sensor is quite different, it depends not only on the satellite's observation and the sun
incidence orientation but also the structural and optical properties of the surface. Therefore, the objectives of this
research are to analyze the different BRDF characters of soil, vegetation, water and urban surface and also their
BRDF effects on the quality of satellite image through 6S radiative transfer model. Furthermore, the causation of
CCD blooming and spilling by ground reflectance is discussed by using QUICKBIRD image data and the
corresponding ground image data. The general conclusion of BRDF effects on remote sensing imagery is proposed.
For FY-1C meteorological satellite radiation calibration at Chinese Satellite Calibration Test Site and establishment of the quantitative relation between the output of sensor and the known standard radiation., calibration of absolute spectral responsivity for ASD Field Spec Pro FR spectrometer made by ASD(Analytical Spectral Device) company has been done in the radiation calibration lab of Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, with the radiation calibration system of standard lamp, at the same time, the result of the calibration has been compared with the calibration of ASD company in American. In this paper method of procedure and results have been introduced, simultaneous source of uncertainty has been analyzed in detail. The uncertainty of the result is about 1.9%~6%, which has reached the request of the National Satellite Meteorological Center.