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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - pdftops – avoid excessive or unnecessary rasterization"
href="https://bugs.freedesktop.org/show_bug.cgi?id=66056">66056</a>
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<th>Assignee</th>
<td>poppler-bugs@lists.freedesktop.org
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<th>Summary</th>
<td>pdftops – avoid excessive or unnecessary rasterization
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Reporter</th>
<td>cloos@jhcloos.com
</td>
</tr>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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<th>Component</th>
<td>utils
</td>
</tr>
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<th>Product</th>
<td>poppler
</td>
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<pre>Currently PSoutputDev:: forces rasterization whenever the pdf (page?) has any
tranparency or uses pattern image masks.
Instead it, as cairo does, should limit rasterization to the size of the
non-opaque regions.
In particular, if the only non-opaque objects are images, then those images
should be pre-composed and treated as opaque images.
Non-opaque images directly on the background should be composed to white.
Non-opaque images atop a constant opaque vector or image object should be
composed to said underlying object’s constant colour and then opaquely painted
atop the object.
For everything else, the area with non-opaque objects can be rasterized as the
whole page currently is.
Looking at PSOutputDev::, this will take some work.</pre>
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</p>
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