Computer Vision News - October 2016

8 Computer Vision News Trick (4) imregdemons Supports 3-D Images on GPU: Trick The imregdemons function now comes with a built-in fast implementation on GPU. The capabilities of the function can be seen in the example on the left: two hand images in different positions are the input, while the demons algorithm registers them one on top of the other and aligns them together. (3) 3-D superpixels: Use simple linear iterative clustering (SLIC) with volumetric image: remember the SLIC superpixel algorithm we have reviewed in our July issue ? Now Matlab comes with built-in support for 3D superpixels, enabling you to preprocess 3D images (like CT or MRI scans) with the superpixel oversegmentation, as can be seen in the example on the right. Though we only include a 2D slice here, all the computation is done in 3D, making the superpixels more precise. Indeed, you can see the main organs in the CT are recognized. This result could be the used as input of a more advanced segmentation algorithm and improve the latter's precision due to the superpixel prep work. Axial slice from a CT scan, where the main organs are segmented with the superpixel