- Vuescan Scan Negatives
- Vuescan Scan Multiple Photos At Once
- Vuescan Scan+
- Vuescan Scan Multiple Photos Mac
(Draft page, further information will be added)
The following SW packages were used in the evaluation:
- Little cms profiler (Freeware): Homepage
- AIM XLProfiler 0.99 (Freeware): Homepage
- Profile Prism V4.12: Homepage
- Silverfast Ai 6.0: Homepage
- Praxisoft WiziWYG: Homepage
- Monaco EZColor V2.1: Homepage
- Vuescan 4.6.42: Homepage
- BasICColor scan+ (Demo version): Homepage
- GretagMacBeth Profilemaker Pro 4.1 (I got the profile evaluation from a friend): Homepage
Vuescan Scan Negatives
- Scanner: Epson 2450
- OS: Windows 2000 Prof
I made an uncorrected scan with Silverfast and used it as reference for all profiling packages (beside Vuescan). The scan was done with 300 dpi, gamma set to 2.2 for the reflection target and 2.4 for the transmission target. All packages used the same target from Wolf Faust (http://www.targets.coloraid.de/) beside EZColor and WiziWYG which have proprietary reflection targets.
I generated (tried to generate) a profile with all packages. I assigned the profile to the original scan of the Faust target and converted the RGB File to Lab. For this I used ColorLab from GretagMacBeth (Download of ColorLab). After this the scan (Lab format) was compared to the target data and deltaE was computed. I used two different tools for this and both generated similar results. One was the MeasureTool from the ProfileMaker 4.1 from GretagMacBeth. The other two was the profile checker from the Little cms profiler package and IPhoto (Homepage) .
I know deltaE is just one parameter to judge a profile, but I started with this and others may follow.
During the evaluation I had several problems with the different packages. It's currious that just commercial packages showed problems.
- EZColor generated profiles which contained tags which are not compliant to the ICC specification. This lead to the situation that the Little cms profiler package could not work with these profiles. ColorLab and IPhoto seemed to have no problem.
EZColor could also not be used with absolute rendering intend in ColorLab. The result was a all blue picture.
- I was not able to generate a transmission profile with WiziWYG because I found no way to enter the data for the target. Somehow the program expected always propriatary files (extension wyg). The documentation claims that you should be able to profile transmission targets with targets from other vendors.
- Also with Vuescan I was not able to generate a transmission target, because it always said that the scan is not aligned or so and after 30 min trying hard to get rid of the error message I stoped.
- ColorLab also rejected the Vuescan profile
The two following diagrams show the results for the Average deltaE and the Max. deltaE. The results are from IPhoto (which used perceptual rendering intend). The other evaluation tools showed similar results but did not work with every profile. Please not that I added perceptual just because EZColor profile did not work with absolute colorimetric.
Results for reflection target (perceptual rendering intend)
Results for transmission target (perceptual rendering intend)
Results for reflection target (absolute colorimetric)
Results for transmission target (absolute colorimetric)
Contents and attributes of the generated Profiles
The following attributes are not necessarily a measure of quality (largetables do not mean good precision) but may give some insight in the quality ofthe SW (flaws in the profile) and limitations (8bit tables can not meet the precisionof a 16bit table).
|Evaluation of reflection profile|
|AIM||0,60/0,25/0,02||0,22/0,73/-0,18||0,12/0,02/0,95||4096 Points||4096 Points||4096 Points|
|WiziWYG||0,60/0,24/0,01||0,29/0,76/0,00||0,07/0,00/0,81||256 Points||256 Points||256 Points|
|ProfileMaker 4.1||0,62/0,23/0,00||0,21/0,76/0,00||0,12/0,00/0,82||515 Points||515 Points||515 Points|
|ProfilePrism||16bit/21 Entries||-||-||16bit/21 Entries||-||-|
|SilverFast Ai||16bit/33 Entries||16bit/33 Entries||-||-||-||-|
|ProfileMaker 4.1||16bit/25 Entries||16bit/25 Entries||copy of A2B0||-.||-||-|
|Epson Org||16bit/32 Entries||16bit/32 Entries||16bit/32 Entries||-||-||-|
Vuescan Scan Multiple Photos At Once
|1)||ICC Profile Inspector gives error message for this tag|
|3)||ICC Profile Inspector gives error message|
Features of Profiling packages
|Monitor||Scanner||Printer||16bit Raw data||Parameters can be influenced||Profile Editor|
|EZColor||yes||yes||yes||yes||no||for Printer Profile|
|ProfileMaker 4.1||yes||yes||yes||yes||yes 5)||yes|
|1)||may work, but I did not get it to work easily|
|2)||Mainly generation algorythm|
|3)||Gamma, Contrast, Saturation, Color Bias, others|
|4)||Must be bought seperate|
|5)||Size and grey algorythm|
Discussion of the Results
EZColor and WiziWYG had a little drawback with the reflection target becausetheir profile was generated with a different target as they were evaluatedafterwards. But the transmission target shows similar results at least forEZColor.
The first finding was that I was surprised that there seem to be still flawswith the compliance with the ICC standard and that the support of the profileheader was quite weak. Special EZColor showed a number of problems.
I was also surprised by the wide range of results and that the freeware toolsomehow showed by far the best result (at least in the deltaE) evaluation.
But in the end at least all packages gave better results than the profilesupplied by Epson with the scanner.
Side remark: It is interesting that nearly all packages (beside the freewarelcms) put their company name into the copyright tag of the profile. This wouldmean also that the company which build the printing machine has the copyright ona book?
For questions and comments please send an email to: [email protected]
If you would like to scan double-sided pages – handwritten lecture notes, for example – use the Fujitsu-Fi-5530C scanner and VueScan software.
Here are the steps to scan one or many pages:
Vuescan Scan Multiple Photos Mac
- Check to see that the Fujitzu scanner is on
- Open VueScan
- Insert document into the scanner feeder upside down and facing the back wall.
- Configure the following options in Vuescan’s Input tab (default folder should be wherever you want to save your files).
- Click Scan
- To combine multiple separate scans into one document, choose SCAN+