<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>verify</title> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> <meta name="author" content="Graeme Gill"> </head> <body> <h2><b>profile/verify</b></h2> <h3>Summary</h3> Verify a color transform by comparing CIE measurement values from two test charts. The charts will usually be in <a href="File_Formats.html#.ti3">.ti3</a> format, but only XYZ, Lab or spectral values will be used. The overall average and worst case delta E will be reported, as well as the worst 10% and best 90% of values.<br> <h3>Usage Summary</h3> <small><span style="font-family: monospace;">verify [-options] target.ti3 measured.ti3</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> -v Verbose - print each patch value<br> -n Normalise each files reading to white Y<br> -N Normalise each files reading to white XYZ<br style="font-family: monospace;"> </span><span style="font-family: monospace;"> -c Show CIE94 delta E values</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> -k Show CIEDE2000 delta E values</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> -s Sort patch value by error</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> -w create VRML vector visualisation (measured.wrl)<br> </span></small><small><span style="font-family: monospace;"> -w create VRML marker & vector visualisation (measured.wrl)</span></small><br style="font-family: monospace;"> <small><span style="font-family: monospace;"></span><span style="font-family: monospace;"> -x Use VRML axes</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> -i illum Choose illuminant for print/transparency spectral data:</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> A, D50 (def.), D65, F5, F8, F10 or file.sp</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> -o observ Choose CIE Observer for spectral data:</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span></small><small><span style="font-family: monospace;">1931_2 </span></small><small><span style="font-family: monospace;"> (def.)</span></small><small><span style="font-family: monospace;">, 1964_10, S&B 1955_2, shaw, J&V 1978_2</span></small><small><span style="font-family: monospace;"></span><br style="font-family: monospace;"> <span style="font-family: monospace;"> -f Use Fluorescent Whitening Agent compensation</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><i style="font-family: monospace;">target.ti3</i><span style="font-family: monospace;"> Target or reference patch data file</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><i style="font-family: monospace;">measured.ti3</i><span style="font-family: monospace;"> Measured or actual patch data file</span></small><br> <h3>Usage Details and Discussion</h3> <b> verify</b> provides a way of verifying how well a color transformation (such a proofing) performs.<br> <br> The <b>-v</b> flag prints out extra information during the checking, and prints each patch value, rather than just a summary.<br> <br> The <b>-n</b> flag causes the two sets of values to be normalized to the Y value of white for each set before comparison. White is assumed to be the patch with the largest Y value.<br> <br> The <b>-N</b> flag causes the two sets of values to be normalized to the XYZ of white for each set before comparison. White is assumed to be the patch with the largest Y value.<br> <br> The <b>-c</b> option causes the differences between the test values and the profile prediction of the color for each device value to be displayed in CIE94 delta E, rather than plain L*a*b* delta E. CIE94 delta E has a closer correspondence with perceived color differences than the default CIE76 delta E values.<br> <br> The <b>-k</b> option causes the differences between the test values and the profile prediction of the color for each device value to be displayed in CIEDE2000 delta E, rather than plain L*a*b* delta E. CIEDE2000 delta E has a closer correspondence with perceived color differences than either CIE76 or CIE94 delta E values.<br> <br> If the <b>-s </b>flag is used in combination with the <b>-v</b> flag, then the test point by test point output will be sorted from worst to best.<br> <br> The <b>-w</b> creates a <a href="File_Formats.html#VRML">VRML</a> 3D visualization of the differences between the test points in D50 L*a*b* space, each difference being shown as a line vector. If the <span style="font-weight: bold;">-W</span> flag is used, then the target and measured values will also be marked by a small sphere. This can be used to visualize the placement of values in a .ti3 (or other CGATS file) by using the same file for both "target" and "measured" values.<br> <br> The <b>-x</b> flag adds Lab axes to the VRML output.<br> <br> The <b>-i</b> flag allows specifying a standard or custom illumination spectrum, applied to the spectral test point values, to compute CIE tristimulus values. <b>A</b>, <b>D50</b>, <b>D65</b>, <b>F5</b>, <b>F8</b>, <b>F10</b> are a selection of standard illuminant spectrums, with <b>D50</b> being the default. If a filename is specified instead, it will be assumed to be an Argyll specific <a href="File_Formats.html#.sp">.sp</a> spectrum file.<br> <br> The <b>-o</b> flag allows specifying a tristimulus observer, and is used to compute PCS (Profile Connection Space) tristimulus values. The following choices are available:<br> <b> 1931_2</b> selects the standard CIE 1931 2 degree observer. The default.<br> <b>1964_10</b> selects the standard CIE 1964 10 degree observer.<br> <b>1955_2</b> selects the Stiles and Birch 1955 2 degree observer<br> <b>1978_2 </b>selects the Judd and Voss 1978 2 degree observer<br> <b>shaw</b> selects the Shaw and Fairchild 1997 2 degree observer<br> <br> The same parameter value should be used as was used during the creation of the profile.<br> <br> The <b>-f</b> flag enables Fluorescent Whitening Agent compensation, which compensates for the effect a different illuminant will have, on any Fluorescent Whitening Agent present in the reflective media. Spectral patch information is needed for this to function.<br> <br> If both CIE and spectral values are present in the input files, the CIE values will be used by default. Using the <span style="font-weight: bold;">-i</span>, <span style="font-weight: bold;">-o</span> or <span style="font-weight: bold;">-f</span> flag will force spectral values to be used. The the <span style="font-weight: bold;">-i</span>, <span style="font-weight: bold;">-o</span> or <span style="font-weight: bold;">-f</span> flags will apply to both the target and measured input files.<br> <br> <br> <br> <br> <br> <br> </body> </html>
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Mandriva
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2010.0
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i586
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media
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contrib-release
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by-pkgid
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56e231b080a119bc733fcd74872c9f3d
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files
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