Posted by Jeff on Dec 7, 2009 in
Biomedical Engineering This post is continuing from Biomedical Image Processing – III. Enjoy
Basic Image Modification
While image processing operations can be performed in hardware (e.g., in cases where speed is paramount), many image processing operations are performed in software. This section discusses some of the basic processing operations performed on different types of images, including image [...]
Tags: boolean operations, component labeling, digital filters, grayscale imaging, image modification, image processing, pixels, point operations
Posted by Jeff on Dec 4, 2009 in
Biomedical Engineering This post is continuing from Biomedical Image Processing – II.
DICOM Image Standard
Medical specialists have been slow to adopt widely accepted standards for image/film storage, display, and transmission. However, one standard has been adopted with reasonable success in the radiology community: DICOM (Digital Imaging and Communication in Medicine) has been progressively developed since 1983 by ACR/NEMA [...]
Tags: biomedical image processing, component labeling, dicom, dicom image standard, image analysis, image classification, intensity histogram, m-mode
Posted by Jeff on Dec 2, 2009 in
Biomedical Engineering Continuing from Biomedical Image Processing – I
Image Properties
Once an image is stored in digital format, it can be described by a number of different parameters. Some of the relevant parameters are briefly discussed here. The traditional convention for an image coordinate system is depicted in Figure 4.
Figure 4. General convention for image coordinate systems.
While biomedical [...]
Tags: aspect ratio, image coordinate system, image processing, image properties, monochrome, pixel, voxel
Posted by Jeff on Dec 1, 2009 in
Biomedical Engineering Images play a large role in the presentation of physiological information. Not all image
data, however, are ideal. Images can be corrupted by noise, exhibit blur or spatial
warping, contain non-optimal intensity/color representations, or simply be too large (or
too small) to be of practical or diagnostic value. The following pages contain an
overview of the following topics relevant [...]
Tags: analog images, biomedical image processing, biomedical imaging, digital image processing, image processing, processing images, sampling, scan line sensor
Posted by Jeff on Oct 26, 2009 in
Biomedical Engineering When you are calibrating equipment, you will probably want to account for temperatures associated with the system. Here is some information about temperature measurement that might help you better understand.
The majority of physical processes are affected, to one degree or another, by temperature. Whether these changes are exploited as a technique for temperature transduction or [...]
Tags: steinhart-hart equation, temperature, temperature measurement, temperature transduction, thermisor, thermistor
