Computer Vision News - February 2021

11 One-click Segmentation Auto mation levels in segmentation A wide variety of image analysis and artificial intelligence methods can be implemented in order to segment a medical image . When choosing a segmentation method, several approaches can be taken: • A manual approach - in manual segmentation the user has full control over the segmentation process. Consequently, manual methods may offer the user control of the results, but they require meticulous, time consuming work by a specialist that may still be prone to user bias. • A fully automated approach - in a fully automated segmentation the process is completely computerized and involves no user control. Despite requiring no human input, fully automated methods remain limited by their inability to make corrections in the process and accordingly deliver suboptimal results at times. • A semi-automated approach - in semi-automated segmentation, the user is provided with a means of interaction and keeps some control of the process. The main challenge in semi-automated segmentation is to offer a good balance between • the precision level and the required user interaction. In other words, achieving accurate segmentation with minimal user input in the interactive settings. The benefits of one-click segmentation One-click segmentation is a semi- automated, AI-based segmentation and measurementtoolfor detectingselected regionsof interest and theirboundaries quickly and automatically . In medical imaging especially, this segmentation tool has many benefits: • High accuracy - one-click segmentation not only delivers accurate segmentation of an ROI, but it also enables easy and intuitive corrections of selections. The physician or researcher can select and correct his/her choice of an ROI. • Generalization - one-click segmentation can be generalized to “corner cases”, including previously unseen anatomical structures. When dealing with anatomical structures with an unlimited combination of sizes, shapes and locations, generalization is key. • User impact - one-click segmentation allows the user input to impact the segmentationprocess inamoredirect way. The physician or researcher has full control of the choice of region to segment.