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Commit f9191b324a5a2df396fdeb878932f1106ceb1d40

Authored by tfmoraes
1 parent 99677689
Exists in master and in 68 other branches 3d_inter_style, MIPs, beta3, beta4, brush_pix, canvas_reeng, canvas_text, casmoothing_cython, clean, command-line, cython_threshold, debian_cython, editor_improvements, encoding, ff_mask, ff_mask_improv, ffill_gui, ffill_segmentation, fill_holes_auto, fixes_pre_beta5, floodfill, get_pixel, import_mesh, interactor_style, inv3.0.1, invesalius-libift, mactoolbar, mactoolbar_bkp, manual_v3.1, mask_boolean_op, mask_boolean_op_bkp, mask_copy, mask_greatest_component, measure, measure_canvas, measure_improvements, measure_placement_test, measure_spacing, orientation, phoenix, region_growing_confidence, remote, remove_local_wxpython, rmatsuda-fix_ref_MTC, rmatsuda-fix_remove_marker_bug, rmatsuda-trigger_bug_fix, rotvol, segmentation_menu, select_part, smoothing_bin, smoothing_bin_pll, surface_area, threshold_history, user_guide_en, usp-navegador, vti, vtk6, watershed, watershed_improvements, watershed_improvements_bkp, watershed_merge, workdir, wwwlgui, wx2.9_mac, wxgtk3, wxgtk3_b5, wxgtk3_bkp, xmartlabs-command-line

ENH: Improved the raycasting quality

Showing 1 changed file with 12 additions and 4 deletions   Show diff stats
invesalius/data/volume.py
  Diff comments   View file @f9191b3
... ... @@ -343,7 +343,7 @@ class Volume():
343 343 image2 = convolve
344 344  
345 345 composite_function = vtk.vtkVolumeRayCastCompositeFunction()
346   - composite_function.SetCompositeMethodToClassifyFirst()
  346 + composite_function.SetCompositeMethodToInterpolateFirst()
347 347  
348 348 gradientEstimator = vtk.vtkFiniteDifferenceGradientEstimator()
349 349 gradientEstimator.SetGradientMagnitudeScale(1)
... ... @@ -352,9 +352,9 @@ class Volume():
352 352 #volume_mapper.AutoAdjustSampleDistancesOff()
353 353 volume_mapper.SetInput(image2.GetOutput())
354 354 volume_mapper.SetVolumeRayCastFunction(composite_function)
355   - volume_mapper.SetGradientEstimator(gradientEstimator)
  355 + #volume_mapper.SetGradientEstimator(gradientEstimator)
356 356 volume_mapper.IntermixIntersectingGeometryOn()
357   -
  357 +
358 358 #Cut Plane
359 359 CutPlane(image2.GetOutput(), volume_mapper)
360 360  
... ... @@ -369,13 +369,21 @@ class Volume():
369 369  
370 370 volume_properties.SetInterpolationTypeToLinear()
371 371 volume_properties.SetColor(self.color_transfer)
372   - self.volume_properties = volume_properties
373 372  
374 373 try:
375 374 volume_properties.SetScalarOpacity(self.opacity_transfer_func)
376 375 except NameError:
377 376 pass
378 377  
  378 + # Using these lines to improve the raycasting quality. These values
  379 + # seems related to the distance from ray from raycasting.
  380 + # TODO: Need to see values that improve the quality and don't decrease
  381 + # the performance. 2.0 seems to be a good value to pix_diag
  382 + pix_diag = 2.0
  383 + volume_mapper.SetImageSampleDistance(0.25)
  384 + volume_mapper.SetSampleDistance(pix_diag / 5.0)
  385 + volume_properties.SetScalarOpacityUnitDistance(pix_diag)
  386 +
379 387 self.volume_properties = volume_properties
380 388  
381 389 volume = vtk.vtkVolume()
... ...