The quality of ultrasound images is limited by granular speckle noise. This paper presents two nonlinear restoration methods based on multiscale signal decomposition. Initially, signal{dependent multiplicative speckle noise is transformed to additive noise by a logarithm point operation. Rectangular coordinates are obtained by a polar coordinate transform of the sector image. The lateral distor...

In order to utilize or to extract the shape information of objects in an image for recognition, classification or retrieval, a method for representing shape is needed. In this paper, work on representing plastic bottle shape using morphological based approach for automated classification is reported. Morphological operations are used to describe the structure or form of an image. There are thre...

In this paper we present a new concept of robot-dependent reachability map (RDReachMap) for mobile platforms. In heterogeneous multi-robot systems, the reachability limit of robots motion and actuation must be considered when assigning tasks to them. We created an algorithm that generates those reachability maps, separating regions that can be covered by a robot from the unreachable ones, using...

Historical documents play a vital role in understanding our past and hence need to be preserved. Over the period, these documents tend to possess many variations like stains, strain, ink seepage, dust etc. Image enhancement techniques can be utilized to improve the quality of these images by removing noise and increasing contrast range. The proposed method mainly deals with enhancing the histor...

It is believed that there are currently millions of vehicles on the roads worldwide. The over speed of vehicles ,theft of vehicles, disobeying traffic rules in public, an unauthorized person entering the restricted area are keep on increasing. In order restrict against these criminal activities, we need an automatic public security system. Each vehicle has their own Vehicle Identification Numbe...

The present paper reports on MORPHEMIA, a semi-supervised machine-learning algorithm designed to segment Modern Greek (MG) words into morphemes. The algorithm segments its input iteratively. During its first iteration, the algorithm uses its a priori linguistic knowledge. At the end of each successful iteration, the algorithm extracts new morphological knowledge which is utilised during its nex...

The paper presents a new method to detect forgery by copy-move, splicing or both in the same image. Multiscale, which limits the computational complexity, is used to check if there is any counterfeit in the image. By applying one-level Discrete Wavelet Transform, the sharped edges, which are traces of cut-paste manipulation, are high frequencies and detected from LH, HL and HH sub-bands. A thre...

We introduce a novel region-based video compression framework that uses a morphological operation to eeciently capture motion correspondences between consecutive frames in an image sequence. Our coder is built on the observation that the motion eld associated with typical image sequences can be segmented into component motion subbeld \clusters" associated with distinct objects or regions in the...

RATIONALE The typical intraoperative presentation of vertebral artery injury (VAI) usually involves profuse bleeding and requires immediate treatment. However, an occult VAI may occur intraoperatively and result in delayed life-threatening epidural pseudoaneurysm several days postoperatively. PATIENT CONCERNS A 21-year-old man with compressive cervical myelopathy resulting from canal stenosis...