Application of planar shape comparison to object retrieval in image databases

Application of planar shape comparison to object retrieval in image databases

Shape-based Retrieval in Medical Image Databases Using Kd-trees. Shape-based Retrieval in Medical Image Databases Using Kd-trees

The capacity to retrieve images containing objects with shapes similar to a query shape is desirable in medical image databases. We propose a similarity measure and an indexing mechanism for non-rigid comparison of shape which adds this capability to image databases. The (dis-) similarity measure is based on the observations that, (1) the geometry of the same organ in diier-ent subjects is not ...

Mobile object retrieval in server-based image databases

The increasing number of mobile phones equipped with powerful cameras leads to huge collections of user-generated images. To utilize the information of the images on site, image retrieval systems are becoming more and more popular to search for similar objects in an own image database. As the computational performance and the memory capacity of mobile devices are constantly increasing, this sea...

Content-Based Medical Image Retrieval in Object Oriented Databases

This work describes the concepts used in an Object Manager aimed at storing medical images as one more data type associated to objects. Images can be retrieved through queries based on the graphic contents of the stored images. The usual approach uses icons and textual attributes stored with the images to specify the queries. This work uses a novel modeling technique to define the “image data t...

Shape-Based Retrieval: A Case Study With Trademark Image Databases

Retrieval eeciency and accuracy are two important issues in designing a content-based database retrieval system. We propose a method for trademark image database retrieval based on object shape information that would supplement traditional text-based retrieval systems. This system achieves both the desired eeciency and accuracy using a two-stage hierarchy: in the rst stage, simple and easily co...