Optimum Global Thresholding Pdf Download
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They..have..obtained..decoded..images..of..good..visual..quality..for..encoding..rates..of..0.3..and..0.7..bpp...The....DC....coefficient....of....the....1616....blocks....is....quantized....with....a....step....size....of....4....and....all....AC....coefficients....of....the....1616....blocks....is....quantized....with....a....step....size....of....16.....The..next..step..in..the..compression..process..is..to..quantize..the..transformed..coefficients...Comparison...has...been...made...with...baseline...fixed...block...size...DCT...coder...by...using...Mean...Square...Error...(MSE)...and...compression...ratio...(CR)...as...criterions....DCTs...of...smaller...blocks...may...be...quantized...rather...heavily...and...of...bigger...sub...blocks...lightly...to...achieve...higher...compression...without...sacrificing...the...quality....
Optimum....Global....Thresholding....Based....Variable....Block....Size....DCT....Coding....For....Efficient....Image....Compression.....IEEE,....vo1.68,....no.3.....Optimum...Global...Thresholding...Based...Variable...Block...Size...DCT...Coding...For...Efficient...Image...Compression....403....Forbidden.........Your..browser..doesn't..accept..cookies...Thakur........A....Highly....Efficient....Gray....Image....Compression....Codec....Using....Neuro....Fuzzy....Based....Soft....Hybrid....JPEG....Standard........Proceedings....of....Second....International....Conference....Emerging....Research....in....Computing,....Information,....Communication....and....Applications....ERCICA....2014,....vol.no.1,....pp.....Table..2:..Values..of..CR,..MSE..and..PSNR..for..all..five..test..images..Images..Parameters..FBS-..DCT..Proposed..OGTBVBS-..DCT..Threshold..Value..(T)..Obtained..Using..Optimum..Global..Thresholding..Lena..Image..CR1..3.3572..12.0515..0.4627..MSE1..89.386..31.1507..PSNR1..28.618..33.1961..Football..Image..CR2..5.1449..11.2085..0.3882..MSE2..77.937..29.192..PSNR2..29.213..33.4782..Barbara..Image..CR3..3.0181..11.274..0.4392..MSE3..99.356..43.2813..PSNR3..28.158..31.7678..Tiger..Image..CR4..2.9805..9.7495..0.4353..MSE4..112.19..48.0093..PSNR4..27.631..31.3176..Pears..Image..CR5..3.7758..13.9706..0.502..MSE5..57.947..20.5174..PSNR5..30.500..35.0096....Table..2..B..Click..here..to..Viewtable....It..is..clearly..observable..from..Table-II..and..Fig...The..proposed..method..calculates..the..required..threshold..value..for..blocks..decomposition..using..optimum..global..thresholding..technique,..which..exploits..the..edge..characteristics..of..the..image...141,Issue:...1,...pp...39......48,...1994....
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