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<p><a href="http://www.timebrush.com/blackmagic" target="_blank"><img src="bm_logo1.jpg" alt="Click to visit BlackMagic Web-home" border="0" WIDTH="254" HEIGHT="19"></a> <em><font face="Arial" size="6" color="#C0C0C0"><strong>On-line Help</strong></font></em></p>
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<p align="center"><font face="Arial" size="3" color="#0059B3"><strong><a target="_self" href="bmdoc3.html">Previous Topic</a> <a target="_self" href="bmdoc32.html">Next Topic</a> <a target="_self" href="bmdoc0.html">TOC</a>
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<p align="left"><strong><font face="Arial" size="4"><font color="#000000"><< 3.1
Operations Bar</font><font color="#0059B3"> </font><font color="#000000">>></font></font></strong></p>
<p align="left"><font color="#000000" face="Arial" size="2"><strong>Operations Bar
provides options to carry out the high level image operations, such as load, save, etc.</strong></font></p>
<p align="left"><font face="Arial" size="2"><img src="bmdoc311.jpg" alt=""Operations" panel" width="717" height="18"></font></p>
<p align="left"> </p>
<p><font face="Arial" size="3" color="#800080"><strong>Load Image</strong></font></p>
<p><font face="Arial" size="2">Brings up the standard Windows "Open File"
dialog, for you to locate and open an image in BlackMagic. Supported image types can be
accessed through the "Supported File Types" filter list. After locating and
selecting the image file, click on "Open" to open the image, or
"Cancel" to return to BlackMagic without loading an image from disk.</font></p>
<p><font face="Arial" size="2">When you open an image, the BlackMagic progress meter shows
up tracking the initialization procedure; depending upon the size of the image, the
initialization process could take a while. Please wait until this progress meter
disappears, before starting work on the image.</font></p>
<p><font face="Arial" size="2">The Image loading process will fail if there is
insufficient memory, or if you select an unsupported image type.</font></p>
<p><font face="Arial" size="3" color="#800080"><strong>Scan Image</strong></font></p>
<p><font face="Arial" size="2">You must have a TWAIN compatible scanner connected, and the
necessary driver installed, to be able to scan a photo into BlackMagic. For more
information on the capabilities and setup of your scanner, please refer to the scanner
documentation.</font></p>
<p><font face="Arial" size="2">If the device is connected and setup properly, clicking on
this button should bring up the scanner dialog; the options may vary (refer to the scanner
documentation for more info. on these). The most common options refer to <em>type of image
to scan</em> (select Colour Image), <em>scan resolution</em> (see the comment on scan
resolution below). Follow the screen prompts to scan in your photo; once this is done, the
image should appear in BlackMagic as described under "Load Image".</font></p>
<p><font face="Arial" size="2"><em><u>Scan Resolution:</u> When you scan a photo through a
scanner, you usually have a choice as to the resolution you scan it at; this is generally
specified in a unit called "dpi" or dots per inch. This is because your computer
reads and displays an image as a series of 'dots' (pixels) in a matrix form across the
width and height of the image. The dots are so close together, that the appear as a
regular photo. In contrast to this, a 'regular' photo taken with a camera (except for ones
shot with a digital camera, and/ or printed on a 'non dye-sub' computer printer) is
normally "continueous tone". So, to get your photo in printed form into the
computer, the scanner performs a translation into the "dpi" format. The dpi
resolution measure specifies how many of such pixels/ dots represent one-square-inch of
the printed photo. If you think about it, the higher the value for "dpi", the
finer/ sharper your image will look (unless the printed photo itself exists in a
dot-matrix form, where the maximum resolution can not be any better than the one that
exists on paper). However, scanning at a higher resolution also has a disadvantage: the
higher the "dpi", the larger will be your 'imported' image, and more time it
will take to colourize it (since you have more area to paint). Because colourizing with
BlackMagic is so quick and easy, this is usually not a problem.</em></font></p>
<p><font face="Arial" size="2"><em>So the bottom-line to consider while deciding on the
"dpi" to scan at: what size do you want to print-out/ save your colourized photo
at. Generally, if you scan a photo (of the non digital type) which is, say, 6" by
4", then scanning it at 100-200 dpi is sufficient to get a decent quality print out
that fits to a "letter size" paper (8.5" X 11"). If you wish to print
out a larger size after colourizing, increase the scan resolution proportionately. Please
refer to your scanner manual for the maximum supported resolution. Be prepared to have
lots of memory "RAM" available, and a fast CPU/ graphics sub-system, if you
intend to process images in BlackMagic scanned at resolutions of 400 dpi or higher. As an
example, you should not have a problem scanning and processing a 4" X 6" photo
at 400 dpi on a computer equipped with 128MB RAM, and 1 GHz Pentium IV CPU. For 200dpi,
you should be fine with 64MB RAM and a Pentium III at 500MHz.</em></font></p>
<p><font face="Arial" size="2"><em><u>Colour or B&W </u>: Scanners also generally
provide the option to scan a photo as Black & White, or True Colour. Your choice on
this depends on whether you intend to use BlackMagic for 'Colour Correction', or for
colourizing from a black & white source. In case of the former, you would be better
off scanning the photo as 'Colour', while in the later case, you do not gain anything by
doing so, so you might as well scan it in as a Gray-scale (the scan may be faster).</em></font></p>
<p><font face="Arial" size="2"><em><u>Temporary Space & Multiple Scans</u>: BlackMagic
uses the temporary windows directory ("temp" folder under your Windows
directory) to make temporary copies of images. This is also true when you scan an image.
The Files are generally saved as "btf1.bmp", "btf2.bmp", etc., (older
ones are overwritten). You should ensure that there is sufficient free space in the host
drive at all times. If you run out of space on the drive, you may clean-up all the
"btf" files from this location. If you scan more than one image in one go, the
first one to be scanned is the one that is opened in BlackMagic. Once you are done with
this one, you may save it (see below), and then load the others one by one from the
Windows temporary folder ("btf2.bmp", "btf3.bmp", etc.) by using the
"Load Image" option (as described above). BlackMagic cleans these files out once
only, each time you close the BlackMagic application.</em></font></p>
<p><font face="Arial" size="3" color="#800080"><strong>SaveAs</strong></font></p>
<p><font face="Arial" size="2">This brings up the standard Windows "Save File"
dialog; move to the folder into which you want to save the file, then specify a file-name
in the Filename edit box. You should ensure that there is sufficient disk space free in
the drive, before doing a "Save". "Cancel" exits to BlackMagic without
saving. You should make a habit of saving your image periodically while colourizing it;
specify a file-name the first time, then save to the same file during subsequent saves
(responding "yes" to the 'Overwrite File?' prompt). The supported save file
types are listed, and may be selected, from the "Filetypes" filter list box.</font></p>
<p><font face="Arial" size="3" color="#800080"><strong>Print</strong></font></p>
<p><font face="Arial" size="2">Use this button to print-out a hard copy of your photo
images. You must have a good quality colour printer capable of photographic class output,
in order to get an optimal printout. It is important to bear a few facts in mind here:</font></p>
<p><font face="Arial" size="2">1. Due to the difference in the way the colours get
displayed on the screen (RGB) vs. how these are output on to paper (CMYK), its
unreasonable to expect a 'precise' match between the two. </font></p>
<p><font face="Arial" size="2">2. The colours on screen generally appear more vibrant
(compared with the printout) due to the fact that the screen is lit-up from behind. </font></p>
<p><font face="Arial" size="2">3. Before drawing any comparison between the screen vs.
printout versions, ensure that your screen is set to display correct colour temperatures,
the full gamut of colours, as well as optimal brightness & contrast settings. The best
way we know of doing this for the average home PC owner (though there are some colour
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