In our experiments, we empirically estimated its value by taking a rectangular region of the image with uniform values and computing the variance in this region.
Photon flux was calculated for each mouse by using a rectangular region of interest encompassing the head of the mouse in a prone position.
Using the WinLight 32 software (Berthold), fluorescent signals (expressed in counts/s) from the images were calculated by selecting a rectangular region of interest around the tumor and integrating the signal of each pixel over the chosen area.
A total of 55 queries are specified by an image and a rectangular region of interest, and the accuracy is measured by mAP.
In[26] and[27], many subregions are obtained by shifting and scaling a rectangular region over the face image and boosting is used for selecting the most discriminative regions of different sizes at different positions.
We thus implemented a feature to allow the user to specify a rectangular region by dragging the mouse across the image.
In contrast, Horn and Schunck (1981) introduced a global method, where the flow is calculated at each voxel instead of a rectangular region by introducing smoothness constraints between adjacent voxels as a regularization strategy.
The centroids of each rectangular aperture are automatically localized by a detection algorithm, and a rectangular region of interest (ROI, 400 × 300 pixels) around each of these four centroids is then used to calculate the averaged transmission signal for each ROI, yielding RC, RS, GC, and GS signals.
A rectangular region (indicated by thick lines) with a dimension of 1400 km (in the ESE direction)×1200 km (in the NNE direction) is modeled.
The scan region can be a rectangular region given by R(i 1,i 2) = [i 1 h 1,(i 1 + m)h 1] × [i 2 h 2,(i 2 + m)h 2].
