<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>printtarg</title> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> <meta name="author" content="Graeme Gill"> </head> <body> <h2><b>target/printtarg</b></h2> <h3>Summary</h3> Create a PS or EPS file containing profile test patch values, ready for printing.<br> <h3>Usage Summary</h3> <small><span style="font-family: monospace;">printtarg [-v] [-i instr] [-r] [-s] [-p size] basename</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#v">-v</a><span style="font-family: monospace;"> Verbose mode</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#i">-i 20 | 22 | 41 | 51 | SS | i1</a><span style="font-family: monospace;"> Select target instrument (default DTP41)</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> 20 = DTP20, 22 = DTP22, 41 = DTP41, 51 = DTP51, SS = SpectroScan, i1 = i1Pro</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#a">-a scale</a><span style="font-family: monospace;"> Scale patch and spacer size by factor (e.g. 0.857 or 1.5 etc.)<br> </span></small><small><span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#A">-A scale</a><span style="font-family: monospace;"> Scale spacer size by additional factor (e.g. 0.857 or 1.5 etc.)</span></small><br style="font-family: monospace;"> <small><span style="font-family: monospace;"></span><span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="printtarg.html#h">-h</a><span style="font-family: monospace;"> Use hexagon patches for SS</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#r">-r</a><span style="font-family: monospace;"> Don't randomize patch location</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#s">-s</a><span style="font-family: monospace;"> Create a scan image recognition (.cht) file</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#S">-S</a><span style="font-family: monospace;"> Same as -s, but don't generate wide orientation strip.</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#c">-c</a><span style="font-family: monospace;"> Force colored spacers</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#b">-b</a><span style="font-family: monospace;"> Force B&W spacers</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#n">-n</a><span style="font-family: monospace;"> Force no spacers</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#f">-f</a><span style="font-family: monospace;"> Create DeviceN Color fallback</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#w">-w g|r</a><span style="font-family: monospace;"> White test encoding DeviceGray (def), DeviceRGB, Separation or DeviceN</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#k">-k g|c|s|n</a><span style="font-family: monospace;"> Black test encoding DeviceGray (def), DeviceCMYK, Separation or DeviceN</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#e">-e</a><span style="font-family: monospace;"> Output EPS compatible file</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#t">-t rsnum</a><span style="font-family: monospace;"> Use given random start number</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#x">-x pattern</a><span style="font-family: monospace;"> Use given strip indexing pattern (Default = "A-Z, A-Z")</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#y">-y pattern</a><span style="font-family: monospace;"> Use given patch indexing pattern (Default = "0-9,@-9,@-9;1-999")</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#m">-m margin</a><span style="font-family: monospace;"> Set a page margin in mm (default 6.0 mm)</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#p">-p size</a><span style="font-family: monospace;"> Select page size from:</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> A4 [210.0 x 297.0 mm]</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> A4R [297.0 x 210.0 mm]</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> A3 [297.0 x 420.0 mm] (default)</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> A2 [420.0 x 594.0 mm]</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> Letter [215.9 x 279.4 mm]</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> LetterR [279.4 x 215.9 mm]</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> Legal [215.9 x 355.6 mm]</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> 11x17 [279.4 x 431.8 mm]</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#pp">-p WWWxHHH</a><span style="font-family: monospace;"> Custom size, WWW mm wide by HHH mm high</span><br style="font-family: monospace;"> <span style="font-family: monospace;"> </span><a style="font-family: monospace;" href="#p1"><i>basename</i></a><span style="font-family: monospace;"> Base name for input(</span><a style="font-family: monospace;" href="File_Formats.html#.ti1">.ti1</a><span style="font-family: monospace;">)/output(</span><a style="font-family: monospace;" href="File_Formats.html#.ti2">.ti2</a><span style="font-family: monospace;">)</span></small><br> <h3>Usage Details and Discussion</h3> <b> printtarg</b> is used to generate a PostScript print file from device test values in a .ti1 file. It output both a PostScript/EPS file, and a .ti2 file containing the device test values together with the layout information needed to identify the patch location. This module can also generate the image recognition templates needed to read the print targets in using a scanner.<br> <br> <a name="v"></a> The <b>-v</b> flag turns on verbose mode. Prints information about how many patches there are in a row, how many patches in a set, and how many pages will be generated. Good for figuring out what the magic number of patches should be for a particular page size.<br> <br> <a name="i"></a> The <b>-i</b> parameter should be used to tel printtarg which instrument it should lay the patches out for. Each instrument has a slightly different requirement, and will lead to a different number of patches ending up on a particular page size.<br> <br> <a name="a"></a> Normally, <b>printtarg</b> prints test patches that are the minimum size that can be reliably and accurately read by the instrument. For some media, it might be desirable to use test patches that are larger than this minimum (e.g. if the media has poor registration, gets physically distorted in the print production process, or if it has a coarse screen, and there are few samples per patch), and the <span style="font-weight: bold;">-a</span> flag should be given an argument greater than 1.0 to increase the patch length, patch width, and spacer size between patches, if it is appropriate for the type of instrument. A value of 1.5 would make the patch 50% larger for instance. For the strip reading instruments the patch is made longer, the strip spacing remaining the same, while for XY scanning instruments, both the width and height will be increased. If a value less than 1.0 is given as an argument, then the patches will be made smaller. For instance, using the SpectroScan instrument it is possible to reduce the test patches to 6mm rather than the default 7mm by supplying an argument of 0.857. Note that this make lining up of the scan head very critical, and increases the amount of bleed through from adjacent squares. For an instrument that needs color spacers between patches, <span style="font-weight: bold;">-a scale</span> also scales the spacer length. For some situations, this may be insufficient, and the <a name="A"></a><span style="font-weight: bold;"> -A scale</span> option can be used to additionally scale the spacer length.<br> <br> <a name="h"></a> Normally, <b>printtarg</b> creates a regular grid of test patches, but for instruments that support arbitrary X, Y addressing (such as the SpectroScan), it can create a chart using regular hexagonal patches, allowing more patches to be fitted into a single sheet. The <span style="font-weight: bold;">-h</span> flag enables this feature.<br> <br> <a name="r"></a> Normally, <b>printtarg</b> randomizes the patch locations, which helps in being able to detect incorrect strips being fed into strip reading instruments, but also assists in randomizing any systematic printing errors introduced into the test chart, due to print engine unevenness, inkjet banding, or printing press ink key settings etc. The <b>-r</b> flag turns this off, and lays the test squares out in the order the values appear in, in the .ti1 file.<br> <br> <a name="s"></a> The <b>-s</b> flag does two things. One is that it causes printtarg to output a chart recognition file (<a href="File_Formats.html#.cht">.cht</a>) so that <a href="scanin.html"> scanin</a> can recognize the chart, and convert rasterized patches into patch values, and the second is that is expands the size of the leading row of patches by 50%, to make sure that each sheet can be oriented correctly by <a href="scanin.html"> scanin</a>. <a name="S"></a>If <b>-S</b> is used rather than <b>-s</b>, then the recognition chart will be created, but the leading row will be the same size as all the other rows.<br> <br> <a name="c"></a> For strip reading instruments, the contrast with the spacers is important in ensuring that a reading will be successful. Normally <span style="font-weight: bold;">printtarg</span> ensures this by printing optimally contrasting colored spacers between each measurement patch. The <b>-c</b> flag is therefore the default behavior. <a name="b"></a>If the <b>-b</b> flag is used, then contrasting neutral colored spacers will be used, but these generally work less reliably than colored spacers. <a name="n"></a>The <b>-n</b> flag will cause spacers to be omitted, which may still work with smaller numbers of test values, when the patch selection is randomized, but won't work successfully when a large number of test points is being used (>200), or when the patches are not randomized in location.<br> <br> When creating a test chart for more than CMYK inks, the PostScript file normally contains color settings that use the PostScript level 3 "Device N" color specifications. Such color specifications have a "fallback" color, for PostScript interpreters that don't handle Device N specifications. Such fallback colors are normally set to a grayscale estimate of the patch color, so that it is possible to tell if the PostScript interpreter is not rendering the Device N values correctly. <a name="f"></a>The <b>-f</b> flag, causes the fallback color to be a color estimate of the Device N test patch color, which is useful for diagnostic purposes.<br> <br> <a name="e"></a> The <b>-e</b> flag gives EPS output, rather than PostScript, allowing the charts to be included in other applications. Because EPS disallows the showpage command, multiple EPS files will result for a multi-page test chart.<br> <br> <a name="t"></a> The <b>-t</b> parameter allows setting the random layout seed. Normally the seed is chosen at random, but sometimes it is useful to be able to generate a chart with the same layout, so a specific seed can be specified this way. The seed used to generate a chart is recorded in the .ti2 file.<br> <br> <a name="x"></a> The <b>-x</b> parameter allows specifying the labelling sequence used for strips (e.g. the X axis of the chart). By default this will be a character sequence A, B, C .. Z. AA, AB, AC .. ZZ, but this can be changed by specifying an alternate labelling sequence pattern. The pattern specifies the labelling sequence as follows: First comes the definition of the symbols for each digit location, least significant to most significant. Note that space is a valid character. The number of definitions declares the maximum number of digits. For example, for a 2 digit numerical sequence: "0123456789, 123456789" would define 0..99 with the most significant digit suppressed (because it uses a space rather than 0) when it is 0. Ranges can be used for brevity: "0-9, 1-9". As a special case, the '@' character can be used to instead of '0' to indicate suppression of the leading zero: "0-9,@-9". Leading ' ' characters in the resulting generated sequence are omitted. Optionally following this, and delimited by a ';' character, are the definitions of valid segments of the index sequence. For instance, to define the index range to be 1..19, 30..39 one could use the pattern "0-9, 1-9;1-19,30-39". Of course most of the time an alphabetic sequence will be wanted, to distinguish it from the numerical sequence used to number the patches in a strip. For a sequence A, B, C .. AA, AB, AC etc. (the default used in Argyll), the following patter would be used: "A-Z, A-Z". For a some ECI2002R charts that skip columns Y and Z, and use a leading numeric digits for addressing strips over 26, the following might be used: "A-Z, 2-9;A-X,2A-9Z".<br> <br> <a name="y"></a> The <b>-y</b> parameter allows specifying the labelling sequence used for patches (e.g. the Y axis of the chart). By default this will be a number sequence 1, 2, ..10, 11, ... 999, but this can be changed by specifying an alternate labelling sequence pattern. See the above description for the labelling sequence encoding.<br> <br> <span style="font-weight: bold;">NOTE</span> that the pattern chosen for the X and Y axes of the chart must be distinguishable, e.g. if they are both numbers or both letters then reading the chart will fail.<br> <br> <a name="w"></a> The <b>-w</b> parameter changes how a white channel test chart (ie. Additive Grey) will be represented in the Postscript. The default is to use the DeviceGray representation (<span style="font-weight: bold;">-wg</span>), but Device RGB can also be used, where the R, G &B values are all set to the same value (<span style="font-weight: bold;">-wr</span>), a <span style="font-weight: bold;">White</span> separation color can be specified (<span style="font-weight: bold;">-ws</span>), or a DeviceN <span style="font-weight: bold;">White</span> color can be used (<span style="font-weight: bold;">-wn</span>).<br> <br> <a name="k"></a> The <b>-k</b> parameter changes how a black channel test chart (ie. Subtractive Grey) will be represented in the Postscript. The default is to use the DeviceGray representation (<span style="font-weight: bold;">-kg</span>), but Device CMYK can also be used, where the CMY values are zero, and just the K channel is used (<span style="font-weight: bold;">-kc</span>), a <span style="font-weight: bold;">Black</span> separation color can be specified (<span style="font-weight: bold;">-ks</span>), or a DeviceN <span style="font-weight: bold;">Black</span> color can be used (<span style="font-weight: bold;">-kn</span>).<br> <br> <a name="m"></a> The <b>-m</b> parameter sets the page margin for all sides. If parts of the test chart are not printed at the edge of a sheet, the devices printable area may be smaller than the default assumed by <span style="font-weight: bold;">printtarg</span>. Increasing this to 10 or 15 mm, may alleviate this problem. (Note that the number of patches per page may be reduced as a consequence.)<br> <br> <a name="p"></a> The <b>-p</b> parameter specifies the paper size. The size can either be one of the default sizes, <a name="pp"></a>or can be specified in millimeters. limitations of the instrument may limit the maximum number of patches in a strip. For SpectroScan, a size of A4 or Letter (or smaller) should be used. Useful combinations of number of patches and paper size are listed <a href="targen.html#Table">here</a>.<br> <br> <a name="p1"></a><i>basename</i> is the base file name of the <a href="File_Formats.html#.ti1">.ti1</a> file that contains the device values to be put on the test chart. <b>printtarg</b> will output a <i>basename.ps</i> or one or more <i>basenameNN.eps</i> files files that should be printed on the devices, as well as a <i>basename.ti2</i> file that contains both the device test point values, and the location of the corresponding patch on the test chart. If the <b>-s</b> or <b>-S</b> flag was specified, then one or more <i>basenameNN.cht</i> files will also be generated.<br> <br> <a href="http://www.ghostgum.com.au/">GSview</a> or <a href="http://www.cs.wisc.edu/%7Eghost/gv/index.htm">GhostView</a> are good programs to use to check what the PostScript or EPS file will look like, without actually printing it out, and may assist in allowing printing to non PostScript printers.<br> <br> <br> <br> <br> <br> <br> </body> </html>
