Sumatra Changelog

2.2.1 Released (November 29, 2021)

• Lots of more or less documented changes.
• Compiled versus VTK 9.1, Visual Studio 2022.

2.2.0.1

• Compiled with VTK 8.2.0 and GEL from GIT (Dec 2019)
• Now writes vertex RGB colors in PLY files
• Can save to VTK XMl file format (*.vtp)
• Can now read BND point files (BU-3DFE landmarks)
• Can now read WRL files with texture - but only take the first actor

2.1.0 Released ()

• Added a remesh dialog. It is now possible to directly remesh a well-formed mesh. The target edge lengths can either be specified as a uniform value or be specified as the scalar values on the input surface.
• Added a possibility to visualise normals where two adjacent faces have opposing normals (in visualise normals menu point)
• Target edge lengths can now be specified as scalars on source surface when using Markov Random Field Surface Reconstruction
• Scalar filtering dialog added. Currently, only a simple average filter is implemented
• Scalar threshold moved to be a submenu under the scalars menu

2.0.0 Released (January 27, 2014)

• x64 release only
• Markov Random Field surface reconstruction: Multi-core in distance computations and regularisation steps
• Markov Random Field surface reconstruction: Internal changes in optimisation steps means that results might be slightly different from results produced with previous versions
• Both in ICP and in compare the tolerance in the check for if a point is on an edge on the target was set to 0.1. The tolerance is now computed as half the median of the interpoint distance of the target.
• Textured surfaces are now drawn using bilinear interpolation instead of nearest neighbour.
• Point picker () now resizes to fit the picked actor size. It can also handle multi-component scalars. For example RGB scalars.

1.4.0 Released (December 5, 2012)

• A merge all points function is now implemented. It takes all inputs and merges them. They need to contain the same information (normals, scalars etc)
• Can now read raw txt files with 9 components (x y z nx ny nz R G B). R,G, B needs to be between 0 and 1
• *.txt files are now the same as *.pts files. If you want to read RAW 3dMD files rename them to *.3dmtxt
• MRFSurface is now based on a new version of GEL. Some slight updates are done. In particular the remeshing of edge triangles is improved.
• Meshlab XML landmark files (*.pp) can now be read as points.
• The marker sphere can now be resize using CTRL+ and CTRL-
• Can now read multi-texture OBJ files. They are split into several surfaces with each their texture
• Fixed major memory leak when computing neighbourhood statistics. Used in MRFSurface reconstruction and PCA normals.

1.3.3 Released (November 18, 2010)

• Bug fix: Merging points no longer crashes if no normals are present.
• Bug fix: No longer crashes if MRF surface reconstruction is used with no normals and set in a mode that uses normals.

1.3.2 Released (September 3, 2010)

• MRFSurface reconstruction: An aggresively cut surface is now computed in addition. Closed holes will be cut away.
• Several parameters added to PCA normals.

1.3.1 Released (August 23, 2010)

• Now load *.pts files (ascii X Y Z )
• The q and the e key does not longer cause Sumatra to exit
• The cut plane can now be used to create a mirror image of a shape
• Slight update of instructions.
• Point Cloud Subsampling added
• MRF Surface reconstruction: Max number of points to use, points per normal, points per distance, triangle size factor.

1.3 Released (March 17, 2010)

• Possible to change the colorbar colors (options | scalarbar)
• Simple Sumatra.ini file supplied with a few values that can be set as defaults (background color, scalarbar color, point size)
• The iterative closest point (ICP) algorithm can now exclude points falling on the edge of the target surface. This is necessary when aligning surface patches that are not 100% overlapping.
• Fixed minor bug in ICP (source surface with pre-transform transformed)
• The help menu now brings up a message box pointing to the very short intro in the html file.

1.2.4 Released (March 7, 2010)

• Compare can now exclude points from the source falling on the edge of the target.
• Fixed a minor bug with MRF surface reconstruction. For some input types an empty error message would appear.
• Can now write PLY files
• Updated PCA normals and moved it to the normals sub-menu
• Fixed a minor bug with visualise normals
• Window name is now changed to the name of the latest surface read
• Migrated to the vector based GEL

1.2.3 Released (November 16, 2009)

• Consistency on in all vtkNormals computations. Has some impact on the MRF surfacer with type 3 (mesh).
• Visualise normals now create normals that have a length that is 1% of the bounding box diagonal (of the mesh)

1.2.1 Released (October 26, 2009)

• Possible to create normals using the camera as the reference.
• More flexible .dat and .csv readers (can now read normals and scalars together f.ex.)
• Much more options for the MRF surface reconstructor.

1.2 Released (October, 2009)

• Point picking
• Reads and displays textures
• Reads 3DmD raw txt files
• Markov Random Field Surface Reconstruction
• Reads (X,Y,Z) .dat files

1.1 Released (June 13, 2008)

• Scalars can be removed using options dialog.
• Predefined camera positions.
• Load and save of camera.
• Animation of modes of displacement. Can be shown on screen or dumped to AVI or BMP files.

Rasmus R. Paulsen 2008-2016
rapa[at]dtu.dk