Biomedical image is often complex. An applied image analysis system should deal with the images which are of quite low quality and are challenging to segment. This paper presents a framework for color cell image segmentation by learning and classification online. It is a robust two-stage scheme using kernel method and watershed transform. In first stage, a twoclass SVM is employed to discrimina...

Colour information is usually not enough to segment natural complex scenes. Texture contains relevant information that segmentation approaches should consider. Martin et al. (2004) proposed a particularly interesting colour-texture gradient. This gradient is not suitable for Watershed based approaches because it contains gaps. In this paper we propose a method based on the distance function to ...

In this paper, a method to extract moving objects on a pixel base for MPEG-4 “sprite coding” is proposed. Sprite coding is a form of object coding: it uses a unified panoramic background image derived from a sequence having a camera motion, and a foreground object as video object planes (VOP’s). The proposed algorithm utilizes background difference, which is the difference between the original ...

An automatic lips detection and tracking system based on watershed segmentation and H approach is presented. For some of the lips detection systems, skin/non-skin detection is a prerequisite step to localise the face region and the lips region is then detected from the face region. In this paper, a direct lips detection technique using watershed segmentation without needing preliminary face loc...

Usually, bone fragility risk is related to deteriorations of osseous architecture. However, medical imaging is one of the means to appreciate in vivo bone screen, such as microscopic or micro-tomography images, which is important in the follow up of the osteoporosis. In this paper, a new image segmentation technique of trabecular bone images is introduced. It combines both hierarchical watershe...

In this paper, a method to extract moving objects on a pixel base for MPEG-4 “sprite coding” is proposed. Sprite coding is a form of object coding: it uses a unified panoramic background image derived from a sequence having a camera motion, and a foreground object as video object planes (VOP’s). The proposed algorithm utilizes background difference and watershed transformation to extract the fo...

Oral cancer is a significant health problem throughout the world. It is very important to detect such types of cancer at an earlier stage than the later stage where the treatment becomes unsuccessful. Early detection helps surgeons to provide necessary therapeutic measures which also benefit the patients. In this paper, a technique is proposed to detect cancers present in mouth provided by an O...

This paper describes a new approach for watershed segmentation on triangular mesh. Common watershed approaches use descending or flooding processes on a connected vertex structure. Watershed transformation is not related to a structure in particular: it only requires connected elements and a height function. This method is widely used on 2D, 3D images as well as on 3D meshes. Here, a connected ...

Agricultural pollutant runoff is a major source of water contamination in California’s Sacramento River watershed where 8500 km of agricultural land influences water quality. The Soil and Water Assessment Tool (SWAT) hydrology, sediment, nitrate and pesticide transport components were assessed for the Sacramento River watershed. To represent flood conveyance in the area, the model was improved ...

Non-point source pollution is well recognized as one of the most critical environmental hazards of modern times. In Illinois, non-point source pollution is the major cause of water quality problems, and soil erosion from agricultural lands is the major source of such pollution. Accelerated by anthropogenic activities, soil erosion reduces crop productivity and leads to subsequent problems from ...