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This work proposes a context-aware middleware for medical workflow organization and efficiency improvement. In hospitals, laboratories and teleradiology companies, each physician or technician is specialized in a specific kind of diagnosis or analysis. Therefore, certain types of medical images are often forwarded to a certain physician or a certain group. This forwarding is time consuming. That is,...
With the advance in the medical image from photographic ï¬lm (analogy) to digital ï¬le, how to avoid medical image modiï¬ed by malice and hide the patient's information into their medical image has become the promising research issue. It is difï¬cult to embed the information of patient to medical images because most pixels of this kind of images are close to black or white. In this paper, an effective...
This article presents an architecture for storing ontologically annotated medical images in a GRID. We will be able to extract information from the annotations, which are represented ontologically using RDF. We implement GRID services associated with the development of methodologies for ontological annotations of data contained in a Data Grid (specifically on the Storage Elements). We also provide...
Marching cube algorithm is a classical 3D reconstruction method, while topological ambiguity exists. Marching tetrahedra algorithms can solve the problem of topological ambiguity, but there are too many triangle patches. This paper proposes a new decomposing method that combines with MC method. We used several sets of medical images in the experiments, which proved this method could avoid topological...
In this paper, the GVF snake model with the initial contour obtained by interactive method based on the adaptive threshold segmentation is proposed for the medical image segmentation. Firstly, input a line segment intersecting the desired object edge by user interaction. Find the max gradient magnitude where the cross-point is along the line segment. Then calculate the adaptive gray threshold and...
Tonsillitis disease is the cause of heart attack and pneumonia. It is also a sign of suspected symptom of heart disease. To improve data transfer rates, this paper proposes VLSI architecture by using color model for early-state tonsillitis detection. In this method, input image is divided into 9 blocks. Each block has 3times3 window which send color data and pixel address to computation box. The system...
The paper firstly elaborated the current situation of the visualization technology and the advantages of the three-dimension data mining. On this base, it introduced the visualization technology into the three-dimension data mining, and analyzed a framework of three-dimension data mining based on the visualization technology and a mathematic algorithm. Further, the function and key technology of each...
A novel approach is presented to extract the contour of an ROI (region of interest) in medical images and medical bar-code. It combines threshold segmentation method and SEL (sequential edge linking) algorithm. Threshold is obtained and used to binarilize the whole image. The binary image is processed by the SEL algorithm to extract the contour of an ROI. Experiments show that the proposed method...
A new approach for lossless compression of medical images has been proposed. After preprocessing, the image is split into bit planes to which the compressed technique is applied. These bit planes can be expressed as ordered binary decision diagrams (OBDD) and coding. This approach compared well with WINZIP in terms of compression ratio.
We have encountered two challenges when using the PACS system. First, PACS users are limited to certain bandwidths and locations. Second, Web PACS machine replacement is too costly, management is difficult, and better image stability is needed. There are also speed variations for different users at different locations. For instance, radiologists use medical image workstations with direct access to...
In this paper, a new fragile watermarking algorithm for medical images is proposed. This algorithm makes it possible to resolve the security and forgery problem of the medical images. Instead of the discrete wavelet transform, an integer wavelet transform is used to utilize hash function. The watermark associated with the hash values is inserted into the LSBs of the integer wavelet transform coefficients...
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