Wolfgang Ortmann

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Abstract In this paper an approach is presented for robust shift detection of two given images. The new unifying idea is that we determine a shifted delta impulse using some well-known restoration techniques, e.g. the Wiener filtering, constraint restoration, entropy restoration, and Baysian restoration. The used restoration techniques imply the robustness(More)
BACKGROUND The purpose of this study was to develop an automated image analysis algorithm to discriminate between head and neck cancer and nonneoplastic epithelium in confocal laser endomicroscopy (CLE) images. METHODS CLE was applied to image head and neck cancer epithelium in vivo. Histopathologic diagnosis from biopsies was used to classify the CLE(More)
➢ Robust character recognition often relies on a good segmentation. ➢ Difficulties: dirt, non-uniform illumination, shadow, . . . ➢ Our method of character segmentation is simple, efficient and easy to implement. ➢ Algorithm overview: 1. Shadow suppression using multiple difference of boxes filters 2. Ternary segmentation using locally estimated thresholds(More)
The quantitative analysis of mitochondria morphology is of great interest on medical research of neurodegnerative diseases, and also for cancer disease, and Diabetis melitus. The state-of-the-art in mitochondrial analysis is based on length measurements of randomly selected individual mitochondria. As manual segmentation and evaluation for whole cell(More)
We present a fast and accurate method to compose images delivered by a quadocular document scanner into a global consistent image. The Shift Detection by Restoration (SDR) approach is used to overcome document deformations. Our method outperforms state of the art panoramic image approaches and is able to work within one second on standard hardware.
Die Uteruswand, welche dieses S e k r e t a b s o n d e r t , k a n n h i s tophys io log i sch v ie r v e r s c h i e d e n e Anb l i cke d a r b i e t e n : ~) Bei Torpedo u n d JRhinobatus weist die i nne re U t e r u s w a n d Z o t t e n u n d v o r s p r i n g e n d e K a m m e auf. Das E p i t h e l i s t e insch ich t ig u n d zeigt drfisige E ins t(More)