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Thumbnailer generates ghost layers with random simple-paged TIFF files
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Description

Simple page TIFF pictures generate multi-page thumbnails. See for example:

I guess the problem is that some metadata are not well parsed by libtiff and this is a kind of side effect.

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Kelson created this task.Feb 27 2015, 1:13 PM
Kelson raised the priority of this task from to Medium.
Kelson updated the task description. (Show Details)
Kelson added projects: MediaWiki-File-management, Multimedia.
Kelson subscribed.
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptFeb 27 2015, 1:13 PM
Kelson added a parent task: T64466: TIFF handling (tracking).Feb 27 2015, 1:13 PM
Micha subscribed.Mar 1 2015, 12:27 AM
BeatEstermann subscribed.Mar 5 2015, 9:20 AM

Further examples of this issue can be found here:
https://commons.wikimedia.org/w/index.php?title=Special%3AListFiles&user=Kunstmuseum_Appenzell&ilshowall=1

Cheers, Beat

Nemo_bis subscribed.Mar 5 2015, 9:57 AM

A thumbnail extracted from that "Photoshop Data: <present>, 9076 bytes"?

$ tiffinfo
LIBTIFF, Version 4.0.3
Copyright (c) 1988-1996 Sam Leffler
Copyright (c) 1991-1996 Silicon Graphics, Inc.
$ tiffinfo -cjs Norway_-_The_land_of_the_midnight_sun.tif 
TIFF Directory at offset 0x8 (8)
  Subfile Type: (0 = 0x0)
  Image Width: 2228 Image Length: 3324
  Resolution: 600, 600 pixels/inch
  Bits/Sample: 8
  Compression Scheme: None
  Photometric Interpretation: RGB color
  Orientation: row 0 top, col 0 lhs
  Samples/Pixel: 3
  Rows/Strip: 3324
  Planar Configuration: single image plane
  Software: Adobe Photoshop CC (Windows)
  DateTime: 2015:02:20 14:35:17
  XMLPacket (XMP Metadata):
<?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?>
<x:xmpmeta xmlns:x="adobe:ns:meta/" x:xmptk="Adobe XMP Core 5.5-c014 79.151481, 2013/03/13-12:09:15        ">
   <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
      <rdf:Description rdf:about=""
            xmlns:xmp="http://ns.adobe.com/xap/1.0/"
            xmlns:dc="http://purl.org/dc/elements/1.1/"
            xmlns:photoshop="http://ns.adobe.com/photoshop/1.0/"
            xmlns:xmpMM="http://ns.adobe.com/xap/1.0/mm/"
            xmlns:stEvt="http://ns.adobe.com/xap/1.0/sType/ResourceEvent#">
         <xmp:CreateDate>2015-02-20T14:33:50+01:00</xmp:CreateDate>
         <xmp:ModifyDate>2015-02-20T14:35:17+01:00</xmp:ModifyDate>
         <xmp:MetadataDate>2015-02-20T14:35:17+01:00</xmp:MetadataDate>
         <dc:format>image/tiff</dc:format>
         <photoshop:ColorMode>3</photoshop:ColorMode>
         <xmpMM:InstanceID>xmp.iid:7e3cc348-b883-284d-9fa0-b5796c8bf393</xmpMM:InstanceID>
         <xmpMM:DocumentID>xmp.did:03786a20-6106-ef4a-a9da-a637b29b80d1</xmpMM:DocumentID>
         <xmpMM:OriginalDocumentID>xmp.did:03786a20-6106-ef4a-a9da-a637b29b80d1</xmpMM:OriginalDocumentID>
         <xmpMM:History>
            <rdf:Seq>
               <rdf:li rdf:parseType="Resource">
                  <stEvt:action>created</stEvt:action>
                  <stEvt:instanceID>xmp.iid:03786a20-6106-ef4a-a9da-a637b29b80d1</stEvt:instanceID>
                  <stEvt:when>2015-02-20T14:33:50+01:00</stEvt:when>
                  <stEvt:softwareAgent>Adobe Photoshop CC (Windows)</stEvt:softwareAgent>
               </rdf:li>
               <rdf:li rdf:parseType="Resource">
                  <stEvt:action>saved</stEvt:action>
                  <stEvt:instanceID>xmp.iid:7e3cc348-b883-284d-9fa0-b5796c8bf393</stEvt:instanceID>
                  <stEvt:when>2015-02-20T14:35:17+01:00</stEvt:when>
                  <stEvt:softwareAgent>Adobe Photoshop CC (Windows)</stEvt:softwareAgent>
                  <stEvt:changed>/</stEvt:changed>
               </rdf:li>
            </rdf:Seq>
         </xmpMM:History>
      </rdf:Description>
   </rdf:RDF>
</x:xmpmeta>
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    
                                                                                                    









































<?xpacket end="w"?>
  Photoshop Data: <present>, 9076 bytes
  EXIFIFDOffset: 0x1535fd0
  1 Strips:
      0: [   23614, 22217616]
TIFF Directory at offset 0x1535fd0 (22241232)
  ColorSpace: 65535
  PixelXDimension: 2228
  PixelYDimension: 3324
Daniel_Mietchen subscribed.Mar 5 2015, 10:51 AM
Kelson closed this task as a duplicate of T87318: TIFF images acquiring an extra page.Mar 10 2015, 9:30 AM
Kelson mentioned this in T87318: TIFF images acquiring an extra page.
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