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- W2261877929 abstract "[Objective] To study the digital image compression technology in rice monitoring system.[Method] A digital image compression technology program based on the discrete Fourier transform was proposed,and simulation experiments were carried out to compress the image at different compression ratios.[Result] When compression ratios were less than 30,the compression ratio,image entropy,average codeword length,coding efficiency and redundancy which reflected the quality of the coding,and the parameter PSNR which estimated the fidelity of the compressed image were all achieved good results that human eye could barely percept the difference between the original image and decompressed image;and when the compression ratios were more than 30,there was a certain distortion in the decompressed image.And when the compression ratio was 91.516 3,although the image had some distortion,the PSNR was still achieved to 21.528 2,and human eye could accept the decompressed image intuitively within the acceptable error range.[Conclusion] The results showed that the proposed image compression program was a viable,effective,and better image compression technology which could satisfy the requirements of the crop monitoring system on image storage,transforming and transporting." @default.
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- W2261877929 date "2012-01-01" @default.
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- W2261877929 title "Rice crop digital image compression technology based on discrete Fourier transform." @default.
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