Substantially sped up huffman decompression, by replacing the bit-testing loop for all codes under 12-bit long. Instead a direct table is used which covers bulk of the codes, but is still small in size.
This allowed to speed up decompression by x3 times. This is extremely important, because when user draws an ROI over signal intensity volume, a lag will appear in the ROI drawing if the decompression is not fast enough.
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Sunday, September 22, 2013
Saturday, September 21, 2013
Friday, September 20, 2013
Thursday, September 19, 2013
Fixing the defect of "delayed-draw" while drawing an ROI. For some reasons this started to show since last Build 124, and happens only on one specific image dimensions obtained from K-trans testing.
This was a combination of several issues. Disabled accessing the entity layers with Alpha=0.
Added a test comparing possible Huffman compression savings vs. simple Minbits.
[FvxBuild125]
This was a combination of several issues. Disabled accessing the entity layers with Alpha=0.
Added a test comparing possible Huffman compression savings vs. simple Minbits.
[FvxBuild125]
Wednesday, September 18, 2013
Working on the T2/T2* parametric modelling issue reported by Andrew Rozenkrantz.
Dealing with the DICOM dataset issue in dynamic series, when first timepoint has a different TAG_SLICE_LOCATION from the rest of the timepoints

Modelling problem was corrected by setting up possible range for T2 values to [10,1000] ms
(from the old interval of [1,250] ms)
[FvxBuild125]
Dealing with the DICOM dataset issue in dynamic series, when first timepoint has a different TAG_SLICE_LOCATION from the rest of the timepoints
Modelling problem was corrected by setting up possible range for T2 values to [10,1000] ms
(from the old interval of [1,250] ms)
[FvxBuild125]
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