Appendix D. Image Enhancement Questionnaire

Appendix D
Image Enhancement Questionnaire

This appendix shows the image enhancement survey questionnaire which was circulated.

Survey of Image Enhancement Tools for Manuscript Collections

This survey is divided into three sections: General Information; Interactive Image Processing Tools; and Non-interactive (Automatic) Image Processing Tools. Due to the diversity of tools being surveyed, many of the questions may not be applicable to your product (answer N/A). If you don't have time to fill out the survey form, please call me instead, or send me your standard product literature.

GENERAL INFORMATION

Primary Contact ______________________________ Telephone _______________

Company Name ______________________________

Address ______________________________

______________________________

Does your company currently manufacture image processing tools (hardware or software) suitable for use in the enhancement (quality improvement and/or file size reduction) of scanned manuscripts?

___ Yes ___ No Comments ____________________________________________

If selected by the Library Committee, will it be possible to arrange a demonstration of your products at the Library of Congress?

___ Yes ___ No Comments ____________________________________________

Does your company offer a demo disk or evaluation copy?

___ Yes ( ___ PC, ___ Macintosh, ___ SUN, ___ Other Unix) ___ No

Could a video tape of a demonstration of your products be provided as an alternate form of demonstration?

___ Yes ___ No Comments ____________________________________________

What particular strengths do your company's products have that are suited to the Library's needs?

________________________________________________________________________

Any other information or suggestions?

________________________________________________________________________

INTERACTIVE IMAGE PROCESSING TOOLS

Which of your products would you recommend for the interactive enhancement of scanned manuscript images at the Library of Congress?

(For multiple recommendations, use duplicate copies of this form).

Product _________________ Description _____________________ Price ______

What computer environment is this product compatible with?

___ PC, DOS

___ PC, Windows

___ Macintosh

___ Unix, ______________________________________________________________

___ Other, _____________________________________________________________

Is this a hardware product or a software product?

___ Hardware, ________________ Bus

___ Software

Can the input image come directly from a scanner?

___ Yes, supported scanners are: _______________________________________

Can the input image come from a file?

___ Yes, supported file formats are: ___________________________________

Can the input image be a compressed file (e.g. JPEG)?

___ Yes, supported compression formats are: ____________________________

What input pixel depths are supported?

___ 24-bit color ___ 8-bit monochrome ___ Binary ___ Other _______

Time to read in a letter size (8.5" x 11 ") image

___ 24-bit color, 300 dpi, uncompressed ________________________________

___ 24-bit color, 300 dpi, JPEG compressed _____________________________

___ 8-bit monochrome, 300 dpi, uncompressed ____________________________

___ 8-bit monochrome, 300 dpi, JPEG compressed _________________________

___ Binary, 600 dpi, uncompressed ______________________________________

___ Binary, 600 dpi, Group 4 compressed ________________________________

Recommended hardware/software configuration to achieve these throughputs:

________________________________________________________________________

Are there any maximum limits to the image size? (e.g. 64K x 64K pixels)

________________________________________________________________________

What image enhancement operations are supported?

___ Grayscale Analysis

___ Histogram ___ Average ___ Min/Max ___ Standard deviation

___ Automatic brightness or contrast adjustment (please describe)

____________________________________________________________________

Time to process an 8.5" x 11", 300 dpi, 24-bit image _______________

___ Color space conversion _____________________________________________

___ Automatic deskew

___ Based on measured edges of page

___ Based on location of information in the image

___ Automatic cropping

___ Based on measured edges of page

___ Based on location of information in the image

___ Convolutions (linear filtering):

___ Edge enhance ___ Sharpen ___ Average ___ Other ___________

Time to process an 8.5" x 11", 300 dpi, 24-bit image _______________

___ Morphological operations (non-linear filtering):

___ Erosion ___ Dilation ___ Other _____________________________

Time to process an 8.5" x 11", 300 dpi, 8-bit image ________________

___ Page Segmentation (text/photo discrimination)

Time to process an 8.5" x 11", 300 dpi, 8-bit image ________________

___ Thresholding and/or halftoning

___ Fixed threshold ________________________________________________

___ Global adaptive threshold ______________________________________

___ Local adaptive threshold _______________________________________

___ Edge enhanced threshold ________________________________________

___ Halftoning _____________________________________________________

___ Error diffusion ________________________________________________

___ Other __________________________________________________________

Time to process an 8.5" x 11", 300 dpi, 8-bit image ________________

___ Speckle Deletion

Size range for black specks ________________________________________

Size range for white specks ________________________________________

___ 2-D Transforms _____________________________________________________

___ Resampling (resolution conversion)

___ Nearest neighbor ___ Interpolation ___ Other _______________

___ Other image processing operations (please describe) _______________

____________________________________________________________________

Can the output image go to a file?

___ Yes, supported file formats are: ___________________________________

Can the output image be compressed (e.g. JPEG)?

___ Yes, supported compression formats are: ____________________________

What output pixel depths are supported?

___ 24-bit color ___ 8-bit monochrome ___ Binary ___ Other _______

Time to write out a letter size (8.5" x 11 ") image