Biomedical Image Analysis - download pdf or read online

By Rangaraj M. Rangayyan

ISBN-10: 0849396956

ISBN-13: 9780849396953

Pcs became an essential component of clinical imaging platforms and are used for every thing from information acquisition and photograph new release to snapshot exhibit and research. because the scope and complexity of imaging know-how progressively raise, extra complex strategies are required to resolve the rising demanding situations. Biomedical photograph research demonstrates the advantages reaped from the appliance of electronic snapshot processing, machine imaginative and prescient, and trend research ideas to biomedical photos, reminiscent of including target power and bettering diagnostic self belief via quantitative research. The e-book makes a speciality of post-acquisition demanding situations similar to photograph enhancement, detection of edges and items, research of form, quantification of texture and sharpness, and trend research, instead of at the imaging apparatus and imaging options. each one bankruptcy addresses numerous difficulties linked to imaging or snapshot research, outlining the common methods, then detailing extra subtle equipment directed to the explicit difficulties of curiosity. Biomedical photo research comes in handy for senior undergraduate and graduate biomedical engineering scholars, practising engineers, and desktop scientists operating in varied parts corresponding to telecommunications, biomedical purposes, and sanatorium info platforms.

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Extra resources for Biomedical Image Analysis

Example text

In the simplest form of X-ray imaging or radiography, a 2D projection (shadow or silhouette) of a 3D body is produced on lm by irradiating the body with X-ray photons 4, 3, 5, 6]. This mode of imaging is referred to as projection or planar imaging. Each ray of X-ray photons is attenuated by a factor depending upon the integral of the linear attenuation coe cient along the path of the ray, and produces a corresponding gray level (or signal) at the point hit on the lm or the detecting device used.

More sophisticated techniques that provide functional images related to circulation and various physiological processes are described in the following sections. 2 Transillumination Transillumination, diaphanography, and diaphanoscopy involve the shining of visible light or near-infrared radiation through a part of the body, and viewing or imaging the transmitted radiation. The technique has been investigated for the detection of breast cancer, the attractive feature being the use of nonionizing radiation 27].

A discrete-time signal that can take amplitude values only from a limited list of quantized levels is called a digital signal this distinction between discrete-time and digital signals is often ignored. If one were to use a thermal camera and take a picture of a body, a twodimensional (2D) representation of the heat radiated from the body would be obtained. Although the temperature distribution within the body (and even on the surface of the body) is a 3D entity, the picture produced by the camera is a 2D snapshot of the heat radiation eld.

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Biomedical Image Analysis by Rangaraj M. Rangayyan

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