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Harvard
University Library Page Images Evaluation Project
home 003298279_0004, text + image page Longfellow, Henry Wadsworth, 1807-1882, The courtship of Miles Standish and other poems / by Henry Wadsworth Longfellow ; with an introduction by Austen T. Kempton ; illustrated with many text engravings… New York : Grosset & Dunlap c1910. 171 p. [HOLLIS 003298279] |
Image Quality Evaluations: 2006 study (librarian evaluators) - uncorrected camera TIFF (source for the processed RGB TIFF) (10,152 KB) - processed RGB TIFF (source image for JP2 processing) (9,878 KB) - 600 ppi 1-bit TIFF (from processed RGB TIFF) (267 KB) -- image production notes |
Quality
level |
Setting |
File
size (KB) |
Page
image |
evaluated in 2006 |
0 |
lossless |
6,104 6,045 6,018 |
no no no |
|
1 |
PSNR, 40 dB MSE, slope value 50980 Q = 70 |
1,995 1,457 1,167 |
yes no no |
|
2 |
PSNR, 38.3 dB MSE, slope value 51492 Q = 50 |
1,599 680 713 |
no yes no |
|
3 |
PSNR, 36.7 dB MSE, slope value 51748 Q = 40 |
1,251 479 563 |
no yes no |
|
4 |
PSNR, 35 dB MSE, slope value 51876 Q = 35 |
882 435 496 |
yes no no |
|
5 |
PSNR, 32.5 dB MSE, slope value 52004 Q = 30 |
581 391 432 |
no yes no |
|
6 |
PSNR, 30 dB MSE, slope value 52196 Q = 20 |
394 279 305 |
yes no no |