IMPACT Storage Estimator "Version 4.0, February 2011" "Instructions for Use " "This tool will estimate the storage required by your project for the images and OCR output files made within the workflow. To use it, please click the start button on the left and enter the details of how many images and what compression is used in the appropriate boxes. " "For support use our HelpDesk at: www.impact-project.eu/helpdesk. If required, please consult our detailed IMPACT Storage Estimator Tutorial and background notes that can be downloaded from the IMPACT website under www.impact-project.eu. " "Although great care was taken in producing this storage estimator, you use it at your own risk. IMPACT can not guarantee the absence of errors or omissions in this tool. If you find any mistakes, please contact the authors at impact@bsb-muenchen.de. " IMPACT is supported by the European Community under the Information and Communication Technologies Theme of the Seventh Framework Programme. The project is coordinated by the National Library of the Netherlands. ##### Sheet/List 2 ##### IMPACT Storage Estimator "Version 4.0, February 2011" Dark green cells necessarily to be filled Results will be displayed in the blue cells Light green cells optionally to be filled / changed Red cells contain error messages Master Files Derivative Files for OCR Derivative Files for Web OCR Result Files 10000 10000 10000 10000 File Format File Format File Format File Format TIFF "JPEG (100%, colour)" "JPEG (50%, colour)" Character Level Information (*.xml) TIFF Compression Method TIFF Compression Method TIFF Compression Method Format Factor 198.47 Compression Rate Compression Rate Compression Rate Publication Size (Characters per Image / Page) 1 0.24 0.03 Large book (4000 Characters) TIFF Compression Rate TIFF Compression Rate TIFF Compression Rate Characters related to Publication Size 1 1 1 4000 Resolution (ppi) Resolution (ppi) Resolution (ppi) Characters per Image / Page (Manual Input) 400 300 150 Bit Depth / Colour Depth Bit Depth / Colour Depth Bit Depth / Colour Depth Characters per Image 24 24 24 4000 Image Height Image Height Image Height 10000.00 10000.00 10000.00 Image Width Image Width Image Width 1000.00 1000.00 1000.00 Unit Image Size Unit Image Size Unit Image Size Pixel Pixel Pixel Required Storage in Kilobyte (KB) Required Storage in Kilobyte (KB) Required Storage in Kilobyte (KB) Required Storage in Kilobyte (KB) "292,968,750" "39,550,781" "1,235,962" "9,960,853" Required Storage in Megabyte (MB) Required Storage in Megabyte (MB) Required Storage in Megabyte (MB) Required Storage in Megabyte (MB) "286,102" "38,624" "1,207" "9,727" Required Storage in Gigabyte (GB) Required Storage in Gigabyte (GB) Required Storage in Gigabyte (GB) Required Storage in Gigabyte (GB) 279 38 1 9 Required Storage in Terabyte (TB) Required Storage in Terabyte (TB) Required Storage in Terabyte (TB) Required Storage in Terabyte (TB) 0.27 0.04 0.00 0.01 Total Number of Storage Media Total Required Storage Project related information "Although care was taken in producing this storage estimator, you use it at your own risk. IMPACT can not guarantee the absence of errors or omissions in this tool. If you find any mistakes, please contact us at impact@bsb-muenchen.de." CD (700 MB) Kilobyte (KB) Institution / Company: 480 "343,716,346" IMPACT "DVD (4,7 GB)" Megabyte (MB) Project name: 70 "335,660" Storage Estimator Linear Tape-Open 1 Native (100 GB)* Gigabyte (GB) Digital stock description: 4 328 European Heritage Linear Tape-Open 2 Native (200 GB)* Terabyte (TB) Calculated by: 2 0.32 Munich DigitiZation Center Linear Tape-Open 3 Native (400 GB)* Calculation date: 1 * If compression is used - divide the output in half 9/30/2019 Linear Tape-Open 4 Native (800 GB)* 1 "Provided for the IMPACT Project by the Munich DigitiZation Center (MDZ) at the Bavarian State Library, www.muenchener-digitalisierungszentrum.de." IMPACT is supported by the European Community under the Information and Communication Technologies Theme of the Seventh Framework Programme. The project is coordinated by the National Library of the Netherlands. ##### Sheet/List 3 ##### FileFormat_Images Compression_Methods Units FileFormatsOCR PublicationTypes Master Files - Image Size TIFF cm Not-formatted Text (*.txt) Height Width GIF (black-and-white) TIFF Group4 (black-and-white) Inches Word Level Information (*.xml) Small book (2000 Characters) Inches Inches GIF (colour; lossless up to 256 colours) TIFF LZW (black-and-white) mm Character Level Information (*.xml) Average book (3000 Characters) 25.00 2.50 GIF (greyscale) TIFF LZW (colour and greyscale) Pixel Large book (4000 Characters) Pixel Pixel "JPEG (100%, colour)" TIFF ZIP (black-and-white) Small newspaper (8000 Characters) 10000 1000 "JPEG (100%, greyscale)" TIFF ZIP (colour) Average newspaper (10000 Characters) mm mm "JPEG (50%, colour)" TIFF ZIP (greyscale) Large newspaper (12000 Characters) 635 64 "JPEG (50%, greyscale)" cm cm "JPEG2000 (lossless, colour and greyscale)" 63.50 6.35 "PNG (black-and-white, best compression)" "PNG (colour, best compression)" "PNG (greyscale, best compression)" Derivative Files for OCR - Image Size BMP (uncompressed) Height Width Inches Inches 25.00 2.50 Pixel Pixel 10000 1000 mm mm 635 64 cm cm 63.50 6.35 Derivative Files for Web - Image Size Height Width Inches Inches 25.00 2.50 Pixel Pixel 10000 1000 mm mm 635 64 cm cm 63.50 6.35 ##### Sheet/List 4 ##### "Tools used for converting tasks: - XnView (http://www.xnview.com) - IrfanView (http://www.irfanview.net). In case there was a difference - different file size after converting from one into another file format - the average value was chosen. Test material can be provided. This Excel sheet is based on a small selection of ""representative"" test material." Source File File Name Resolution (ppi) Bit Depths Width x Height TIFF - File Size in KB TIFF - File Size in Percent TIFF LZW - File Size in KB TIFF LZW - File Size in Percent TIFF Group 4 - File Size in KB TIFF Group 4 - File Size in Percent TIFF ZIP - File Size in KB TIFF ZIP - File Size in Percent TIFF JPEG - File Size in KB TIFF JPEG - File Size in Percent JPEG (100%) - File Size in KB JPEG (100%) - File Size in Percent JPEG (50%) - File Size in KB JPEG (50%) - File Size in Percent JPEG2000 - File Size in KB JPEG2000 - File Size in Percent BMP - File Size in KB BMP - File Size in Percent GIF - File Size in KB GIF - File Size in Percent PNG - File Size in KB PNG - File Size in Percent book 18th century 00006483 300 24 "11,3 x 18,9 cm" 8865 100 6808 76.80 6635 74.84 2587 29.18 2052 23.15 232 2.62 3941 44.46 8737 98.56 1570 17.71 4114 46.41 book 19th century 00007648 400 24 "16,5 x 20,5 cm" 25009 100 20668 82.64 19384 77.51 8188 32.74 6234 24.93 727 2.91 11786 47.13 24713 98.82 5016 20.06 13130 52.50 book 18th century 00006483-Image from the first scans 400 8 "11,1 x 19,0 cm" 5099 100 3978 78.02 3608 70.76 1958 38.40 2715 53.25 231 4.53 2323 45.56 5106 100.14 3943 77.33 2982 58.48 newspaper 20th century 00007520 300 8 "31,9 x 47,2 cm" 20495 100 17380 84.80 14185 69.21 7688 37.51 7593 37.05 2216 10.81 10660 52.01 20505 100.05 17431 85.05 12122 59.15 newspaper 19th century 00000468 300 8 "20,9 x 26,2 cm" 7455 100 6619 88.79 5650 75.79 5412 72.60 3615 48.49 1134 15.21 4433 59.46 7446 99.88 6575 88.20 5501 73.79 newspaper 20th century 00007799 300 8 "32,2 x 46,7 cm" 20492 100 13803 67.36 11552 56.37 11263 54.96 14095 68.78 1387 6.77 11728 57.23 20493 100.00 13807 67.38 11032 53.84 newspaper 18th century 00008465 300 1 "31,1 x 41,8 cm" 2218 100 716 32.28 361 16.28 640 28.85 2221 100.14 729 32.87 588 26.51 newspaper 18th century 00009218 300 1 "31,7 x 46,1 cm" 2498 100 772 30.90 371 14.85 690 27.62 2511 100.52 791 31.67 638 25.54 book 19th century 00000187 600 1 "12,6 x 20,4 cm" 1758 100 350 19.91 158 8.99 317 18.03 1770 100.68 374 21.27 297 16.89 Average Compression Rate in Percent 1 62.39 13.37 55.44 44.23 42.61 7.14 50.97 99.86 49.06 45.90 Average Compression Rate (colour) in Percent 1 79.72 76.18 30.96 24.04 2.76 45.79 98.69 18.88 49.45 Average Compression Rate (greyscale) in Percent 1 79.74 68.03 50.87 51.89 9.33 53.57 100.02 79.49 61.31 Average Compression Rate (black-and-white) in Percent 1 27.70 13.37 24.84 100.45 28.60 22.98 Compression Rates used by the IMPACT Storage Estimator TIFF is the uncompressed reference format. The compression rate is 1. "Compression rate for colour and greyscale images is 0,80, for black-and-white images 0,28." "Compression rate for black-and white images is 0,13." "Compression rate for colour images is 0,76, for greyscale images 0,68, for black-and-white images 0,25." "Compression rate for colour images is 0,31, for greyscale images 0,51." "Compression rate for colour images is 0,24, for greyscale images 0,52." "Compression rate for colour images is 0,03, for greyscale images 0,09." "Average compression rate is 0,51." Average compression rate is 1. "Compression rate for colour images is 0,19, for greyscale images 0,79, for black-and-white images 0,29." "Compression rate for colour images is 0,49, for greyscale images 0,61, for black-and-white images 0,23." ##### Sheet/List 5 ##### "The tool used for creating the different OCR result files was ABBYY FineReader 7.0. Test material can be provided. This Excel sheet is based on a small selection of ""representative"" test material. " Source File Name Not-formatted text (*.txt) - Number of Characters without blanks Not-formatted Text (*.txt) - File Size in KB Character Level Information (*.xml) - File Size in KB Character Level Information (*.xml) - File Size in Percent compared to not-formatted text Word Level Information (*.xml) - File Size in KB Word Level Information (*.xml) - File Size in Percent newspaper 19th century bl00008181 12945 16 3384 21150 79 494 newspaper 19th century bl00008185 18184 22 4712 21418 75 341 book 20th century bsb00016289_00014 2241 3 510 17000 12 400 book 20th century bsb00016289_00123 3426 4 887 22175 16 400 book 20th century bsb00016318_00030 4156 5 1077 21540 27 540 book 20th century bsb00016318_00751 4312 5 1105 22100 20 400 book 20th century bsb00023058_00333 2679 4 690 17250 11 275 book 20th century bsb00023058_00621 2529 4 667 16675 23 575 book 20th century bsb00023292_00124 3119 4 801 20025 13 325 book 20th century bsb00023292_00632 3371 5 906 18120 32 640 book 20th century jhvd51_0009 2276 3 588 19600 13 433 book 20th century jhvd51_0021 2097 3 541 18033 10 333 newspaper 20th century onb00010308 7273 9 1870 20778 35 389 newspaper 20th century onb00010483 9452 11 2420 22000 41 373 Average Values 5576 7 1440 19847 29 423 Values used by the IMPACT Storage Estimator Average number of characters per KB for not-formatted text: 797 Format Factor compared to not-formatted Text: 198.47 Format Factor compared to not-formatted Text: 4.23