UltraCortex is a Python-based toolkit for calculating and visualizing various metrics for MRI images following the BIDS (Brain Imaging Data Structure) format. The toolkit includes metrics such as Entropy Focus Criterion (EFC), Anatomical Signal-to-Noise Ratio (SNR), Contrast-to-Noise Ratio (CNR)...
The algorithm can produce good quality images from a small set of k-space frequencies with only a few iterations of simple matrix operations, using the image entropy as the focus criterion. It does not require any special patient preparation, extra pulse sequences, complex gradient programming or...
between the out-of-focus plane and the focal plane is determined automatically via an image-definition-evaluation criterion based on information entropy ... G Liu,Z Zhi,RK Wang - 《Biomedical Optics Express》 被引量: 11发表: 2012年 A correction algorithm for undersampled images using dynamic ...
we give the definition of the enterprise management entropy,of which process and mechanism are studied at the same time.Then we prove the management entropy's criterion of the enterprise evolving law in order to well control the enterprises 'management entropy and achieve the focus strategy ...
Due to the highly imbalanced problem of the iEEG data, we used AUC here instead of using classification accuracy as system evaluation criterion. The proposed method detects epileptic focus for different epilepsy mechanisms patients (age and pathological type) with an average AUC of 0.86. We also ...
Van Dyck, D., Op de Beeck, M., Tang, D., Jansen, J., Zandbergen, H.W., 1996. A global entropy criterion for focus tuning in exit wavefunction reconstruction in high resolution electron microscopy. Proc. Int. Conf. Image Processing (ICIP'96) pp. 737-740....
From the results, which markedly depend on the parameter values chosen, it is evident that the spectral form of the informational entropy loss utilized can be generally classified as a suitable objective numerical criterion of performance of the incoherent images and the corresponding optical imaging ...