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...lite. The image data of the ground surface are taken by linear array CCD sensor, and converted to electrical signal. The information data rate is given by following equation. b q N N m × × DataRate = =-=(1)-=- ô Where, m=number of pixels per line, N b =number of observation bands, N q =number of bits per pixel.sInternational Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, V...

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...DCT causes sometimes un-allowable degradation of the image quality. In this paper the compression ratio is defined to following relation. Compression Ratio = compressed data size / original data size =-=(3)-=- This means when the input image data are consists of 8 bits, compression ratio=0.125 corresponds to 1 bit per pixel. Figure 2 shows the sample of the compressed and expanded image using JPEG-DCT. Lef...

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... Vol. XXXIV-5/W10 is a integration time or imaging period per line, when W is a ground pixel size, and v is a relative E velocity of the satellite, is ordinarily set to following relations. W ô = E v =-=(2)-=- The typical value of the data rate is in the case of m=10,000, Nb =4, Nq =8, v=7km/sec., and W =1m, E data rate reaches approximately 2.24Gbps without any additive synchronous code or error correctin...

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... correlation analysis The mutual correlation value of the two images is acquired by the following equation. v= j+ nyu= i+ nx ∑∑ { V1( u v, ) −V 1}{ V2( u −kxv, −ky) −V 2} v= j u= i ρ( i, j, kx, ky) = =-=(4)-=- 1 2σ Where, V1V, 2, V 1σ, V2 σ are mean values and deviations of V1 and V2 . 4 SIMULATION RESULTS OF HEIGHT INFORMATION EXTRACTION 4.1 Simulation Results without Data Compression V σ⋅ V Figure 6 show...

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...action, the multi-directional stereo imaging is also important to avoid unseen region. In this system, the increase of the data rate can be reduced by using the techniques of motion image compression =-=(5)-=- . Then multidirectional and TDI imaging are both important for high resolution stereo imaging. Figure 13 shows the principle schematic diagram suitable for future high-resolution stereo system. Diff....