There is a TIFFReadTile call in lib tiff. I some tiled images I will try with the updated itk reader. I'll be really syprised if it works since reading tiled images is tricky and took quite a bit of code.
I'll keep you posted. Bill On Fri, Nov 14, 2014 at 10:19 AM, Bradley Lowekamp <[email protected]> wrote: > Bill, > > There was a tile block of code before, but that was not covered, looked > unreachable and was removed. > > Currently there are two ways that a tiff page can be read with the > TIFFReadRGBAImageOriented, and with the TIFFReadScanline. The RGBA method > from libtiff is fairly robust but reads the image into an RGBA buffer so is > not memory efficient. Our custom method uses the scanline method [1], which > should work with both stripped and tiled pages. > > But please test, and add a test? I'm not 100% if there is a test image for > tiled images. > > Where the difference between stripped and tiled images would really matter is > streaming, but that is not there...yet. > > Brad > > [1] http://www.remotesensing.org/libtiff/libtiff.html#scanlines > > > On Nov 14, 2014, at 10:04 AM, Bill Lorensen <[email protected]> wrote: > >> Brad, >> >> I recently added tiled image reading to VTK's tiff reader. Do you >> think that would be useful in IUTK. I don't know how often tiled tiff >> images are encountered. >> >> BTW I do not mean tiled pyramid tiff images. >> >> Bill >> >> On Fri, Nov 14, 2014 at 9:53 AM, Bradley Lowekamp >> <[email protected]> wrote: >>> Greetings, >>> >>> I have recently refactored ITK's TIFFImageIO to remove a significant amount >>> of dead code, and improve performance up to 3-5X. A number of bug related to >>> reading BigTIFF files have been addressed. Additionally, Tiff tags are now >>> place into the Meta-DataDictionary to allow access to additional TIFF fields >>> such as OME-XML tags ( Originally contributed by Richard Beare >>> http://www.insight-journal.org/browse/publication/728 ). >>> >>> Significant performance improvements were made to both scalar images and >>> palette images. Handling of certain orientations are now "better" handled, >>> while not changing how the default TOPLEFT orientation is loaded or written. >>> There were a number of cases which appear unreachable and illogical such as >>> support from Zeiss two-componet types, and support for some type of SGI >>> tiled tiff as a 3D image. These were removed. >>> >>> If you are an active user of TIFF images with ITK, please checkout the >>> latest ITK master and test the refactored TIFFImageIO. >>> >>> Thanks, >>> Brad >>> >>> p.s. Here is the git log for the recent changes. >>> >>> $git log --no-merges 6791b4a3613aade07e3f11f765f1316faf03b113.. >>> >>> commit 46f4125df47aeff9c42c9f2b3699c06e67ffaca9 >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Fri Oct 31 14:25:13 2014 -0400 >>> >>> ENH: adding TIFFImageIO test for RGB palette images >>> >>> Change-Id: I320acc8beac8225616451d11b291b1d7e12a17d0 >>> >>> commit 9adc54c7f53b4da84a41f500d561ae494cb85158 >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Fri Oct 24 13:42:02 2014 -0400 >>> >>> BUG: Adding missing parentheses around boolean expression >>> >>> Change-Id: I669d160ff3ba830f3c33ac87de434db41472eb79 >>> >>> commit 40afd95161727be3274f8094ce19fe45e2c3aa50 >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Wed Oct 22 15:05:39 2014 -0400 >>> >>> PERF: Refactor color table lookup >>> >>> Change to use a index lookup for the color and gray scale >>> palettes. The remove excessive exception checking done on a per pixel >>> basis with the GetColor method. Additionally the InitializeColor >>> method was change do initialize the color palette variables. >>> >>> An exception no longer occurs when an index exceeds the number of >>> entries in a palette. Instead a module operator is used to prevent >>> out of bounds memory access. >>> >>> Change-Id: Ia62c65cd8b1be0d66c488540709a8fb961190cc9 >>> >>> commit d98cbeb7206f6007f7d0c25fd4a4becad8973053 >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Fri Oct 3 09:01:28 2014 -0400 >>> >>> ENH: Refactor per pixel conversion function to per scan-line method >>> >>> This patch changes the implementation of conversion from the TIFF >>> scanline buffer from a function call on each pixel to a function call >>> per scanline. The enable efficient copying of similar scanline and >>> better reuse of variables for palette look ups. >>> >>> This can increase the performance of reading grayscale images by up to >>> 3X for cached files. >>> >>> Change-Id: I24bb744fda35629f1c1ed7154e26e5708e912059 >>> >>> commit 8e488f40e8cb7defa046700798b77e3944ac33c9 >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Tue Sep 30 08:56:58 2014 -0400 >>> >>> ENH: RGBA read images should stay unchanged. >>> >>> The image that are read with the TIFFReadRGBAImage should not have >>> their pixel types converted. This libtiff method always read images >>> into an ABGR uint8 format. When the tiff file is read by this method >>> it should report that uint8 and RGBA is the component an pixel type >>> for the image. This allows the standard ITK buffer conversion to be >>> performed. >>> >>> This change remove extra cases and template instantiations. >>> >>> Additionally the RGBAImageToBuffer method was flipping the image along >>> the y-axis, this has been more explicitly done with the call to >>> TIFFReadRGBAImageOriented. >>> >>> Change-Id: I022b12921d406edb09730f905213b0db811f1bd4 >>> >>> commit e5834d5b00e4e3fab3255d88e7d8fd917ee722e9 >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Fri Sep 26 14:04:09 2014 -0400 >>> >>> ENH: Remove support for TIFF tile as 3D and dead code >>> >>> This TIFF file format is a file which contains a list of directories, >>> if there are no directories in the file it's not a valid tiff. Code >>> which supported 3D tiles was conditioned on a file with no directories >>> and no data. Additional code was removed related to a private SGI tag >>> TIFFTAG_TILEDEPTH, ImageJ specific tag also pre-conditioned on this >>> invalid case. >>> >>> Change-Id: Id4ef171c5dbe0c797be206e0059c7488719ef6e6 >>> >>> commit 3ac19a9ffd94e02254900dd0e5e2661c329e3183 >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Mon Oct 6 10:01:50 2014 -0400 >>> >>> BUG: Address Coverity warning about null pointer dereferences >>> >>> The patch addressed the following Coverity warnings: >>> >>> ** CID 1243373: Explicit null dereferenced (FORWARD_NULL) >>> itkTIFFImageIO.cxx: >>> 1192 in itk::TIFFImageIO::ReadTIFFTags()() >>> >>> ** CID 1243372: Dereference null return value (NULL_RETURNS) >>> itkTIFFImageIO.cxx: >>> 1096 in itk::TIFFImageIO::ReadTIFFTags()() >>> >>> ** CID 1243371: Dereference before null check (REVERSE_INULL) >>> itkTIFFImageIO.cxx: >>> 1100 in itk::TIFFImageIO::ReadTIFFTags()() >>> Last login: Fri Oct 3 19:47:29 on ttys004 >>> >>> Change-Id: I02c8435628c860ff03889b9b57e9dd1543bf82da >>> >>> commit 52ce992f3a57ef9f187f9c4b4ebd7ce20db365bd >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Fri Sep 26 11:04:38 2014 -0400 >>> >>> ENH: Reduce code duplicate in TIFFImageIO::ReadCurrentPage >>> >>> Refactoring of the pixelOffset to include the number of components >>> remove the need for a separate block for RGB multi-component files. >>> >>> commit 97b33787ec17b76a61fdb43b5f1e1ea708bbac2c >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Wed Sep 24 15:00:54 2014 -0400 >>> >>> ENH: add arbitrary TIFF TAGs to meta-data dictionary >>> >>> A more general approach to adding custom tiff tags to the meta-data >>> dictionary has been used based on the implementation of libtiff's >>> PrintDirectory method and the libtiff "Defining New TIFF Tags" >>> documentation. >>> >>> Additionally a new test image was added generated in Photoshop, which >>> has a novel pixel layout, and also contains additional tag types such >>> as byte, and size specified ascii. >>> >>> Change-Id: Idb2e669e540cfbe27a932444011f4b9896ca403d >>> >>> commit 795c71abb8b5c3a09d461ec7b34eefbfdcb460e9 >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Mon Sep 22 15:08:36 2014 -0400 >>> >>> BUG: Use array delete operator for array new allocations >>> >>> Change-Id: Ic9bc3c3792083a1a1b3fd842486a7436a4086150 >>> >>> commit 83e8b6e699b3d9e2da8533dd1ea36dc0692bc9eb >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Tue Sep 23 11:14:15 2014 -0400 >>> >>> STYLE: Fix minor kwstyle defects in test and test results >>> >>> Change-Id: I4b2641d31acb5c764de4041bb7d21c08b3c99846 >>> >>> commit 869f3275120646829b27d5cd75c23800d9df01cd >>> Author: Richard Beare <[email protected]> >>> Date: Tue Sep 23 11:11:34 2014 -0400 >>> >>> ENH: Include TIFF tags in the MetaDataDictionary >>> >>> Add contribution from the Insight Journal: >>> http://hdl.handle.net/10380/3170 >>> >>> Change-Id: I20b02394d92c421bad75c5d0af496a6e80089ac0 >>> >>> commit c7a76c9acb319862647a651a2060dd3fb16560d7 >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Mon Sep 22 14:46:44 2014 -0400 >>> >>> BUG: Remove dead separated plannar code, add test >>> >>> The PLANARCONFIG_SEPARATE block in TIFFImageIO::ReadGenericImage, was >>> preceded by a unreachable due to a conditional and exception >>> check. Support for this configuration remains in the TIFFReadRGBAImage >>> method. A test for the configuration has been added. >>> >>> A new input image is added from the from the libTiff test images: >>> >>> PlanarConfiguration = 2 (separated samples) >>> ------------------------------------------- >>> oxford.tif 601x81 8-bit RGB (lzw) screendump off oxford >>> >>> Change-Id: Ibb874f80809b70b1aee7a2c9ff1fc8544ed56c04 >>> >>> commit 1b57d75964496dd2cc9e050a4a4425f1163d4b22 >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Mon Sep 22 13:32:23 2014 -0400 >>> >>> BUG: Fix right oriented tiff images >>> >>> The TIFFImageIO::ReadGenericImage method correctly handled top-left >>> oriented images, and bottom-right image, however images oriented with >>> right were non-correctly handled. These cases are now handled >>> correctly by the TIFFRGBAImage generic path. >>> >>> New test images of the cthead1 image were added which have been >>> flipped the to the different orientation, and the matching orientation >>> tag specified so that they should all be read as equivalent >>> images. These have been added as a test case. >>> >>> Change-Id: I058382d6d2e18341ab87edd165490be2187c1d15 >>> >>> commit 6263f4389026f1bd770054e86c428b56629d705b >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Thu Sep 18 16:20:41 2014 -0400 >>> >>> ENH: Refactor duplicated code to read a page >>> >>> Created a method to read a single page or sub-image in a tiff >>> file. Simular code was both in the ReadVolume method for 3-d and the >>> Read method for 2-d. The code block from ReadVolume was used because >>> it contained more typed cases. There for this patch does improve the >>> 2d reading capabilities for tiffio, so that they are consistent with >>> the 3d. >>> >>> Change-Id: I0fbfb19f04435a703bb3fa09ea4e79179592e443 >>> >>> commit 233571f1e626917bce872e450907bc8e8521e371 >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Thu Sep 18 14:59:58 2014 -0400 >>> >>> ENH: Refactor method to convert RGBA image to output buffer >>> >>> BUG: Address overflow issue when computing page offset with >>> TIFFReadRGBAImage method. >>> >>> Extract repeated code to convert from ReadRGBAImage to output image >>> type. >>> >>> Change-Id: Ia90b5e104f22c77493b8a4cd5bf640fd793b8b4b >>> >>> commit 1cd59825fa65f1123726a32f67c1a443015b40ec >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Thu Sep 18 11:30:41 2014 -0400 >>> >>> BUG: Remove Zeiss 2-channel support code in TIFFImageIO ( and LSMImageIO >>> ) >>> >>> There are no tests for this branch of code. It only works in 3D under >>> certain cases. There are apparent bugs in the code such as not setting >>> all of the input image, and logically dead branches. Some downloaded >>> test images for similar described format do not load. This may effect >>> files with the extensions tif, tiff, or lsm. >>> >>> Removal of this code will enable expansion of the current code to more >>> generically support multi-sample per pixel images. >>> >>> For more robust reading of this type of image the SCIFIO remote >>> module should be used. >>> >>> Change-Id: Idb98d69538db3bc8520881ea4a5e22476238c41e >>> >>> commit 690cfdc89343fcc8c7d3cc266d652cfb14de9d41 >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Tue Sep 16 15:31:52 2014 -0400 >>> >>> ENH: Refactor GenericReadImage into template function >>> >>> Reduce code duplication by using template method. >>> >>> Change-Id: I79411ad6595258d54cbfa5a4152cc55994acd8e0 >>> >>> commit 5f73f24bfb668fa9f33804218c0db05cf5cadb3f >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Tue Sep 16 12:09:59 2014 -0400 >>> >>> ENH: Refactor ReadTwoSamplePerPixelImage into template function >>> >>> Reduce code duplication by using template method. >>> >>> Change-Id: I45f417486e60a4d3e67ff31fa967dac069b3ce3e >>> >>> commit 0b573136d636613217df9683ea846db8039f9312 >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Tue Sep 16 11:12:45 2014 -0400 >>> >>> ENH: Extract TiffReaderInternal to separate file >>> >>> Refactored private class to be in separate private header. >>> >>> Change-Id: Icb4008c1605a3a0b62c563350cf2e3bbe948ec6d >>> >>> commit 6791b4a3613aade07e3f11f765f1316faf03b113 >>> Author: Bradley Lowekamp <[email protected]> >>> Date: Mon Sep 15 16:46:26 2014 -0400 >>> >>> BUG: Fix overflows computing size of read tiff image >>> >>> When multiplying the height and width of an tiff image (32-bits), >>> at least one element should be converted to size_t to help prevent >>> numeric overflow. >>> >>> This change enables reading of larger RGB and large 2D image, that >>> were previously truncated when reading. This does not address >>> potential buffer overflow or resource limits which could occur. >>> >>> Change-Id: I192370606677c8dc1a903c67c2a0701026256d5a >>> >>> commit b6fabfeb2a5b8d339b2d459edd3e3c50232b55ff >>> Author: Matt McCormick <[email protected]> >>> Date: Mon Aug 25 00:35:48 2014 -0400 >>> >>> COMP: Do not use _stat64 with MinGW-32. >>> >>> Unlike MinGW-w64, MinGW-32 aka MinGW, does not define as much of the API >>> including _stat64. Do not use use _stat64 in TIFFImageIO when building >>> with >>> MinGW-32. >>> >>> Change-Id: I8f13a4500cdadf4f4adae7b5cf8893fe8b8cad55 >>> >>> >>> >>> >>> _______________________________________________ >>> Powered by www.kitware.com >>> >>> Visit other Kitware open-source projects at >>> http://www.kitware.com/opensource/opensource.html >>> >>> Kitware offers ITK Training Courses, for more information visit: >>> http://kitware.com/products/protraining.php >>> >>> Please keep messages on-topic and check the ITK FAQ at: >>> http://www.itk.org/Wiki/ITK_FAQ >>> >>> Follow this link to subscribe/unsubscribe: >>> http://public.kitware.com/mailman/listinfo/insight-developers >>> >> >> >> >> -- >> Unpaid intern in BillsBasement at noware dot com > -- Unpaid intern in BillsBasement at noware dot com _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Kitware offers ITK Training Courses, for more information visit: http://kitware.com/products/protraining.php Please keep messages on-topic and check the ITK FAQ at: http://www.itk.org/Wiki/ITK_FAQ Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/insight-developers
