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Harvard
University Library Page Images Evaluation Project
home 003176581_0007, text page Irving, Washington, 1783-1859, A history of New York, from
the beginning of the world to the end of the Dutch dynasty ... In
two volumes. Fifth American edition. By Diedrich Knickerbocker [pseud.]
... New York, C.S. Van Winkle, 1826. 2 v. 20 cm. |
Image Quality Evaluations: 2006 study (librarian evaluators) - uncorrected camera TIFF (source for the processed RGB TIFF) (7,181 KB) - processed RGB TIFF (source image for JP2 processing) (6,907 KB) - 600 ppi 1-bit TIFF (from processed RGB TIFF) (173 KB) -- image production notes |
Quality
level |
Setting |
File
size (KB) |
Page
image |
evaluated in 2006 |
0 |
lossless |
4,089 4,054 4,027 |
no no no |
|
1 |
PSNR, 40 dB MSE, slope value 50980 Q = 70 |
1,261 949 621 |
yes no no |
|
2 |
PSNR, 38.3 dB MSE, slope value 51492 Q = 50 |
968 249 299 |
no yes no |
|
3 |
PSNR, 36.7 dB MSE, slope value 51748 Q = 40 |
749 151 206 |
no yes no |
|
4 |
PSNR, 35 dB MSE, slope value 51876 Q = 35 |
478 131 172 |
yes no no |
|
5 |
PSNR, 32.5 dB MSE, slope value 52004 Q = 30 |
214 108 146 |
no yes no |
|
6 |
PSNR, 30 dB MSE, slope value 52196 Q = 20 |
91 76 104 |
yes no no |