image analysis

Left atrial appendage segmentation from 3D CCTA images for occluder placement procedure

Background: Percutaneous left atrial appendage (LAA) closure (placement of an occluder to close the appendage) is a novel procedure for stroke prevention in patients suffering from atrial fibrillation. The closure procedure planning requires accurate …

Spatiogram features to characterize pearls and beads and other small ball-shaped objects in paintings

Objective characterization of jewels in paintings, especially pearls, has been a long lasting challenge for art historians. The way an artist painted pearls reflects his ability to observe nature and his acquaintance with contemporary optical theory. …

Spatiogram features to characterize pearls in paintings

Objective characterization of jewels in paintings, especially pearls, has been a long lasting challenge for art historians. The way an artist painted pearls reflects his ability to observing nature and his knowledge of contemporary optical theory. …

Surface reconstruction of wear in carpets by using a wavelet edge detector

Carpet manufacturers have wear labels assigned to their products by human experts who evaluate carpet samples subjected to accelerated wear in a test device. There is considerable industrial and academic interest in going from human to automated …

Automatic individual detection and separation of multiple overlapped nematode worms using skeleton analysis

We present a new method for detection and separation of individual nematode worms in a still image. After pre-processing stage, which includes image binarization, filling the small holes, obtaining the skeleton of the new image and pruning the extra …

MACHINE VISION DETECTION OF ISOLATED AND OVERLAPPED NEMATODE WORMS USING SKELETON ANALYSIS

In this paper we present a novel method for detection of individual C:Elegans worms in population images in presence of overlapping. First, in a pre-processing phase the worms skeletons are obtained by morphological skeleton operation after image …