Fig 7 - uploaded by Surya Prasath
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Comparing bit rate (BR)/bits per voxel (BPV) between near lossless 3D-VOI-OMLSVD, JPEG, and JPEG2000 compression methods, across the 12 selected 3D images
Source publication
Storage and transmission of high-compression 3D radiological images that create high-quality reconstruction upon decompression are critical necessities for effective and efficient teleradiology. To cater to this need, we propose a near lossless 3D image volume compression method based on optimal multilinear singular value decomposition called “3D-V...
Contexts in source publication
Context 1
... observe an overall higher CR value (Fig. 6) and a lower BR value (Fig. 7) for 3D-VOI-OMLSVD compression method. On average our method requires only 0.43 bit rate or BPV, whereas the JPEG and JPEG2000 need an average of 0.68 and 0.54 BPV, ...
Citations
... For the CT scans, PSNR and SSIM values were found to be slightly greater than for the MRI scans (PSNR: 39 to 54 dB and SSIM between 0.79 and 0.98). In [23], a near-lossless compression method based on the factorization of the volume of interest using an optimized multilinear singular value decomposition framework was proposed. In the test dataset (N = 12 volumes, including MRI and PET scans), the authors report CR starting at 11:1 up to 37:1, minimum PSNR of 42 dB and minimum SSIM of 0.95, approximately. ...
The growing use of multimodal high-resolution volumetric data in pre-clinical studies leads to challenges related to the management and handling of the large amount of these datasets. Contrarily to the clinical context, currently there are no standard guidelines to regulate the use of image compression in pre-clinical contexts as a potential alleviation of this problem. In this work, the authors study the application of lossy image coding to compress high-resolution volumetric biomedical data. The impact of compression on the metrics and interpretation of volumetric data was quantified for a correlated multimodal imaging study to characterize murine tumor vasculature, using volumetric high-resolution episcopic microscopy (HREM), micro-computed tomography (µCT), and micro-magnetic resonance imaging (µMRI). The effects of compression were assessed by measuring task-specific performances of several biomedical experts who interpreted and labeled multiple data volumes compressed at different degrees. We defined trade-offs between data volume reduction and preservation of visual information, which ensured the preservation of relevant vasculature morphology at maximum compression efficiency across scales. Using the Jaccard Index (JI) and the average Hausdorff Distance (HD) after vasculature segmentation, we could demonstrate that, in this study, compression that yields to a 256-fold reduction of the data size allowed to keep the error induced by compression below the inter-observer variability, with minimal impact on the assessment of the tumor vasculature across scales.
