Toward fully automatic object detection and segmentation

Hauke Schramm; Olivier Ecabert; Jochen Peters; Vasanth Philomin; Juergen Weese

doi:10.1117/12.652060

10 March 2006 Toward fully automatic object detection and segmentation

Hauke Schramm, Olivier Ecabert, Jochen Peters, Vasanth Philomin, Juergen Weese

Proceedings Volume 6144, Medical Imaging 2006: Image Processing; 614402 (2006) https://doi.org/10.1117/12.652060
Event: Medical Imaging, 2006, San Diego, California, United States

Abstract

An automatic procedure for detecting and segmenting anatomical objects in 3-D images is necessary for achieving a high level of automation in many medical applications. Since today's segmentation techniques typically rely on user input for initialization, they do not allow for a fully automatic workflow. In this work, the generalized Hough transform is used for detecting anatomical objects with well defined shape in 3-D medical images. This well-known technique has frequently been used for object detection in 2-D images and is known to be robust and reliable. However, its computational and memory requirements are generally huge, especially in case of considering 3-D images and various free transformation parameters. Our approach limits the complexity of the generalized Hough transform to a reasonable amount by (1) using object prior knowledge during the preprocessing in order to suppress unlikely regions in the image, (2) restricting the flexibility of the applied transformation to only scaling and translation, and (3) using a simple shape model which does not cover any inter-individual shape variability. Despite these limitations, the approach is demonstrated to allow for a coarse 3-D delineation of the femur, vertebra and heart in a number of experiments. Additionally it is shown that the quality of the object localization is in nearly all cases sufficient to initialize a successful segmentation using shape constrained deformable models.

Citation Download Citation

Hauke Schramm, Olivier Ecabert, Jochen Peters, Vasanth Philomin, and Juergen Weese "Toward fully automatic object detection and segmentation", Proc. SPIE 6144, Medical Imaging 2006: Image Processing, 614402 (10 March 2006); https://doi.org/10.1117/12.652060

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